Recherche Images Maps Play YouTube Actualités Gmail Drive Plus »
Connexion
Les utilisateurs de lecteurs d'écran peuvent cliquer sur ce lien pour activer le mode d'accessibilité. Celui-ci propose les mêmes fonctionnalités principales, mais il est optimisé pour votre lecteur d'écran.

Brevets

  1. Recherche avancée dans les brevets
Numéro de publicationCN104183921 A
Type de publicationDemande
Numéro de demandeCN 201310193834
Date de publication3 déc. 2014
Date de dépôt21 mai 2013
Date de priorité21 mai 2013
Autre référence de publicationCN104183921B
Numéro de publication201310193834.4, CN 104183921 A, CN 104183921A, CN 201310193834, CN-A-104183921, CN104183921 A, CN104183921A, CN201310193834, CN201310193834.4
Inventeurs郝志强
Déposant郝志强
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes:  SIPO, Espacenet
Mobile satellite communication antenna polarization tracking method and tracking system
CN 104183921 A
Résumé
The invention provides a polarization tracking method and tracking system for a mobile satellite communication antenna. The system comprises the satellite communication antenna comprising a receiving antenna and a transmitting antenna which are used for receiving and transmitting orthogonal polarization satellite signals respectively; a polarization isolation degree measurement portion which is used for obtaining and measuring signal levels of the pair of orthogonal polarization signals, calculating the ratio of the obtained signal levels and making a comparison between the ratio and the predetermined threshold value; and a tracking control portion which is used for controlling the antenna to emit and receive polarization angle adjustment synchronously according to the comparison result output from polarization isolation degree measurement portion. The polarization isolation degree measurement portion comprises an orthogonal polarization signal decomposition portion which is used for carrying out decomposing processing to generate a pair of mutually-orthogonal polarization signals according to satellite signals received from the receiving antenna.
Revendications(10)  Langue du texte original : Chinois
1.一种用于移动卫星通信天线的极化跟踪系统,包括: 卫星通信天线,包括接收天线和发射天线,用于接收和发射正交极化的卫星信号; 极化隔离度测量部分,用于获取并测量一对正交极化信号的信号电平,计算所得信号电平的比值并将所述比值与预定阈值进行比较;和跟踪控制部分,用于基于所述极化隔离度测量部分输出的比较结果同步控制天线发射和接收极化角度的调节。 1. A method for mobile satellite communication antenna polarization tracking system, comprising: a satellite communications antenna, includes a receiving antenna and a transmitting antenna for receiving and transmitting satellite signals orthogonal polarization; polarization isolation measurement section, with to obtain and measure a signal level orthogonally polarized signal ratio and the ratio is calculated signal level with a predetermined threshold value; and tracking control section for measuring the polarization isolation in part based on Comparison result output synchronization control antenna transmission and reception polarization angle adjustment.
2.根据权利要求1的极化跟踪系统,其中所述极化隔离度测量部分还包括正交极化信号分解部分,用于根据从接收天线接收的卫星信号分解产生一对互为正交的极化信号。 2. The polarization tracking system according to claim 1, wherein said polarization isolation measurement section further comprises a partially exploded orthogonal polarization signals, for generating a pair of mutually orthogonal decomposition based on the satellite signal received from the receiving antenna polarized signal.
3.根据权利要求1的极化跟踪系统,其中所述卫星通信天线还包括极化角度调节部分,所述跟踪控制部分控制极化角度调节部分来调节天线的极化角度。 3. The polarization tracking system according to claim 1, wherein said satellite communication antenna portion further comprises a polarization angle adjustment, the tracking control section controls the angle of the polarization adjustment section adjusts the antenna polarization angle.
4.根据权利要求1至3中任一项的极化跟踪系统,其中所述卫星通信天线是阵列天线;并且所述极化角度调节部分由数字移相器或功分器构成,用于对阵列天线的极化角度进行调节。 4. The polarization tracking system to any one of claim 3, wherein the satellite communication antenna is an array antenna; and the polarization angle adjusting part by the digital phase shifter or power splitter, and is used for array antenna polarization angle can be adjusted.
5.根据权利要求1至3中任一项的极化跟踪系统,其中所述卫星通信天线是反射面天线;并且所述极化角度调节部分由极化调节电机和旋转部件构成,用于对阵列天线的极化角度进行调节。 Polarization tracking system 1 according to any one of claim 3, wherein said antenna is a satellite communication antenna reflector surface; and adjusting the angle of polarization by the polarization adjustment motor portion and the rotary member, for array antenna polarization angle can be adjusted.
6.根据权利要求1至3中任一项的极化跟踪系统,其中所述一对正交极化信号分别对应于垂直极化信号和水平极化信号。 1 according to one of the polarization tracking system according to any of claim 3, wherein said pair of orthogonally polarized signals respectively corresponding to vertically polarized signals and horizontally polarized signals.
7.根据权利要求1至3中任一项的极化跟踪系统,其中所述一对正交极化信号分别对应于±45°正交极化信号。 1 according to one of the polarization tracking system according to any of claim 3, wherein said pair of orthogonally polarized signals correspond to the ± 45 ° orthogonal polarization signals.
8.根据权利要求1至3中任一项的极化跟踪系统,其中所述阈值设置范围为20-40dB。 According to claim one of the polarization tracking system according to any 1-3, wherein the threshold value is set in the range 20-40dB.
9.一种用于移动卫星通信天线的极化跟踪方法,包括: (1)通过卫星接收天线接收卫星信号; (2)调节天线的极化角,并通过分解接收信号获得一对正交极化信号; (3)测量分解得到的一对正交极化信号的信号电平,并计算所得到的一对正交极化信号的电平比值,将所述比值与预定阈值进行比较;和(4)基于所述比较的结果控制发射和接收天线极化角度的调节。 A polarization tracking method for mobile satellite communication antenna, comprising: (1) The receiving antenna receives satellite signals via satellite; (2) adjusting the antenna polarization angle, and get a pair of orthogonal decomposition of the received signal by pole signal; a signal level orthogonal polarization signals (3) measuring decomposed, a pair of orthogonally polarized signal level ratio and calculates the resultant, the ratio with a predetermined threshold value; and (4) based on a result of the comparison to control the transmitting and receiving antenna polarization angle adjustment.
10.根据权利要求9的极化跟踪方法,其中所述控制步骤(4)包括: 当所述比值大于或等于所述预定阈值时,判定卫星通信天线实现极化角度匹配,并在预定周期内保持卫星通信天线当前的极化角度;以及当所述比值小于所述预定阈值时,改变卫星通信天线的极化角度,并重复步骤(I)至(4)的处理。 10. The polarization tracking method according to claim 9, wherein said controlling step (4) comprises: when the ratio is greater than or equal to the predetermined threshold value, determines the angle of polarization of the satellite communication antennas to achieve matching, and within a predetermined period and when the ratio is less than the predetermined threshold value, change the angle of polarization of the satellite communications antennas, and repeating steps (I) to (4) of the process; to maintain the satellite communication antenna current polarization angle.
Description  Langue du texte original : Chinois
移动卫星通信天线极化跟踪方法和跟踪系统 Mobile satellite communications antenna polarization tracking method and Tracking System

技术领域 Technical Field

[0001] 本发明涉及一种移动卫星/微波通信天线的极化跟踪方法及跟踪系统,具体来说涉及基于卫星天线的极化隔离度执行控制来跟踪和对准卫星的方法及系统。 [0001] The present invention relates to a satellite / microwave communication antenna polarization tracking method and mobile tracking systems, and specifically relates to a method and system for satellite antenna polarization isolation execution control based on satellite tracking and alignment.

背景技术 Background

[0002] 动中通是“移动中的卫星地面站通信系统”的简称。 [0002] The move-in is "moving in the satellite ground station communications system" for short. 通过动中通系统,车辆、轮船、飞机等移动的载体在运动过程中可实时跟踪卫星等平台,不间断地传递语音、数据、图像等多媒体信息,可满足各种军民用应急通信和移动条件下的多媒体通信的需要。 Via mobile communications systems, vehicles, ships, aircraft and other mobile carriers in the course of the campaign in real-time to track satellites and other platforms, uninterrupted transmission of voice, data, images and other multimedia information, can meet a variety of military and civilian emergency communication and movement conditions need multimedia communications under.

[0003] 相对于固定卫星通信系统而言,移动卫星通信系统的关键环节在于全自动卫星跟踪通信天线(全自动卫星跟踪通信天线俗称“动中通”天线)。 [0003] relative to the fixed satellite communication systems, a key part of mobile satellite communications systems is fully automatic satellite tracking communications antenna (automatic satellite tracking communication antennas commonly known as "Moving" antenna). 此种天线需要具有在运动中自动卫星跟踪对准的能力,因此,在安装此种天线之后,卫星天线可以在运动中保持卫星的对准,从而使得卫星通信系统在运动中保持不间断的通信能力。 Such antenna needs to have the ability to communicate in motion automatic satellite tracking alignment, therefore, after the installation of such antennas, satellite dishes can maintain alignment of satellites in motion, so that the satellite communication system in motion to maintain uninterrupted capacity.

[0004] 全自动卫星跟踪通信天线的跟踪能力通常体现在对以下四个物理量的跟踪/保持上,这四个跟踪/保持的物理量分别是:方位角、俯仰角、横滚角、极化角。 [0004] The automatic tracking satellite tracking communication antennas are usually reflected in the following four physical track / hold, this four track / hold physical quantities are: azimuth, pitch angle, roll angle, polarization angle . 也就是说,全自动卫星跟踪天线系统应该具有在载体运动中保持相对于卫星的方位角、俯仰角、横滚角、极化角不变的能力。 That is, the automatic satellite tracking antenna system should have maintained with respect to the satellite carrier movement in azimuth, pitch angle, roll angle, the ability to change the polarization angle.

[0005] 就目前的全自动卫星跟踪通信天线而言,由于在天线方位角、俯仰角、横滚角动态测量方面拥有成熟的传感器和跟踪控制方法,因此,大多天线系统均可以对方位角、俯仰角、横滚角等物理参数进行精确动态闭环跟踪和控制。 [0005] As far as automatic satellite tracking communication antennas, since the antenna azimuth, pitch angle, roll angle dynamic measurements have proven sensors and tracking control method, therefore, most of the antenna system can be on the azimuth, Physical parameters of the pitch angle, roll angle for accurate dynamic closed-loop tracking and control. 但是,对于天线的极化角度而言,由于至今没有理想的天线极化参量动态测量方法,因此天线极化角的动态跟踪和保持,一直是一件工程上的难题。 However, the angle of polarization of the antenna, since so far there is no ideal antenna polarization parameters dynamic measurement methods, so dynamic tracking antenna polarization angle and retention, it has been a problem of engineering. 这也是至今为止,动中通天线一直难以满足卫星公司入网要求的一个主要原因。 This is so far, mobile communications antenna has been difficult to meet the requirements of a major satellite company's network.

[0006] 近年来很多研究和实践在此领域进行,但是研究和实践大多建立在以下两种方法之上: [0006] In recent years a lot of research and practice in this field, but research and practice mostly built on the following two ways:

[0007] 1、卫星定位辅助惯性测量方法 [0007] 1, satellite positioning-aided inertial measurement method

[0008] 利用惯性测量和卫星定位装置,对载体的运动/角位移及位置进行动态的精确测量,系统将测量到的方位、俯仰、横滚等角度和位移,通过建立的运动学数学模型以及天线、载体间的坐标转换模型计算,计算出对应的极化角偏差量,再经由伺服系统对极化角偏差量进行调节,最终实现极化角的动态跟踪和控制。 [0008] The inertial and satellite positioning device, the movement of the carrier / angular displacement and position dynamically accurate measurement system will measure the azimuth, pitch and roll angles and displacements, kinematics mathematical model and coordinate transformation model antenna, the carrier between the result of the calculation of the amount of deviation corresponding polarization angle, and then through the servo system to adjust the polarization angle deviation, and ultimately dynamic tracking and control of the polarization angle. 此种跟踪方法目前广泛地应用在全自动卫星跟踪通信天线系统的设备之中(见专利文献I)。 Such tracking method is now widely used in communications among devices automatic satellite tracking antenna system (see Patent Document I).

[0009] 由于此种跟踪控制方法并没有对天线的极化角或者极化角误差进行直接测量,因此这种方法实际上是一种间接的极化角跟踪方法,即利用测量到的方位、俯仰、横滚等角度及位移推算极化角调节量的一种方法。 [0009] The result of such a tracking control method and no antenna polarization angle or polarization angle error is directly measured, so this method is actually an indirect polarization angle tracking method, namely the use of the measured position, pitch and roll angles and displacements calculated a way to adjust the amount of polarization angle. 由于无法对极化角和误差进行直接测量和反馈控制,从控制理论上来讲,此种方法仍然属于一种极化角开环控制方法。 Unable to direct the polarization angle and error measurement and feedback control from the control theory, this method still belongs to the open-loop control method for the polarization angle. 此种方法实施的基础依赖于对载体姿态的惯性测量和对载体的定位,并且惯性系统随时间产生的“漂移”难以避免,这使得系统的测量误差随使用时间的增加而增加,最终发生跟踪“失效”。 Basis of this method relies on the implementation of the inertial measurement of carrier attitude and position of the carrier, and the inertia of the system over time resulting "drift" is difficult to avoid, which makes the measurement error of the system is increased with the use of time increases, eventually tracking occurs "Failure." 这种跟踪“失效”虽然可以采用更加精确的惯性测量系统来推迟“失效”的发生,或者将误差在一定程度上进行控制/校准。 This tracking "failure" Although you can use a more accurate inertial measurement system to delay the "failure" occurred, or error in a certain extent, control / calibration. 但由于惯性测量装置异常昂贵,付出的成本代价往往使人望而生畏。 However, due to the IMU very expensive, the cost of the price paid is often daunting. 因此,采用这种跟踪方法的天线系统,在极化跟踪性能和成本费用上总是不够理想。 Therefore, using this method of tracking antenna systems, on the polarization tracking performance and cost is always less than ideal.

[0010] 2、卫星信号强度测量方法 [0010] 2, the satellite signal strength measurement method

[0011] 利用卫星信号的强度来调节卫星天线极化角的对准是另外一种常用的极化对准/匹配方法。 [0011] The use of the strength of the satellite signal to adjust the alignment of the satellite antenna polarization angle is another common polarization alignment / matching method. 从理论上讲,卫星天线在极化对准/匹配的情况下,信号将得到最好的接收效果,此时,卫星信号的强度也最强。 In theory, a satellite antenna in the polarization alignment / matching, the signal will get the best reception, this time, the strength of the satellite signal is also the strongest. 但是,由于外部干扰信号的存在和卫星信号在传输过程中的去极化效应,常常使得测量出的信号最强角度不一定就是正确的极化角度。 However, due to the presence of polarization effects and the satellite signal from an external interference signals during transmission, and often the strongest signal so that the measured angle is not necessarily the correct angle of polarization. 而且,由于天线原理、天线设计、天线制造、信号测量上的种种原因,使得卫星信号强度并不能十分敏感地反映出天线极化角度的变化。 Further, since the antenna theory, antenna design, antenna manufacture, signal measurements on a variety of reasons, so that the satellite signal strength, and not sensitive to reflect changes in antenna polarization angle. 因此,使用此种方法进行极化跟踪往往带来较大的极化角匹配误差。 Therefore, the use of such methods often bring greater tracking polarization polarization angle matching error.

[0012] 以上所述方法的主要问题是在天线无法对极化角或者极化角误差进行自我测量的情况下,不得不进行间接地推算,因为推算采用的物理量与极化角之间的关系过于间接,或不够敏感,加上推算出的极化角或者极化角偏差量最终无法测量和验证,故测量的误差、计算误差、执行误差难以度量,无法进行闭环的误差控制,因而产生较大误差,系统难以实现较闻的跟踪精度。 [0012] The above described method is that the main problem in the case of the antenna polarization angle or polarization can not be self-measurement of the angle error and had to be estimated indirectly, as calculated using the relationship between the physical and the polarization angle too indirect, or not sensitive enough, plus calculate the polarization angle or polarization angle deviation ultimately can not be measured and verified, so the measurement error, calculation error, execution error is difficult to measure and can not be closed loop error control, and thus produce more large errors, the system is difficult to achieve than the smell of tracking accuracy.

[0013] 专利文献1:CN101916908A,“动中通平板天线电子变极化系统及电子变极化方法” [0013] Patent Document 1: CN101916908A, "mobile communications become polarized panel antenna electronic system and electronic variable polarization method"

发明内容 DISCLOSURE

[0014] 鉴于现有技术中的上述问题,发明人提出通过对天线接收的极化信号进行分解和对分解后信号的极化隔离度进行测量和跟踪来实现对极化角的跟踪和对准。 [0014] In view of the aforementioned problems of the prior art, the inventors proposed by polarized signals received by the antennas decomposition and decomposition of polarization isolation signal measurement and tracking to achieve the polarization angle of tracking and alignment . 根据本发明的天线极化跟踪方法和跟踪系统,能够在获得更高的跟踪精度的同时降低系统成本。 Antenna polarization tracking method and a tracking system of the present invention, it is possible to reduce system cost in higher tracking accuracy while.

[0015] 发明人认识到移动卫星通信中电磁极化波的如下特征:当天线与卫星极化电磁波的极化角匹配正确之后,将同时伴随而来两个特征:1、极化角匹配后天线接收到的极化电磁波信号最强;2、极化角匹配后在与正确极化垂直/正交的极化方向上天线接收的信号最弱。 [0015] The inventors have recognized the following characteristics of mobile satellite communications polarized electromagnetic waves: the satellite antenna polarization angle and polarization of electromagnetic waves right after the match, will also be accompanied by two characteristics: 1, the matched polarization angle polarized wave antenna to receive the strongest signal; 2, after the match the polarization angle on the right vertical polarization / polarization direction orthogonal antenna signals received weakest. 而且这两种特性同时相伴产生,相互对应。 And these two properties simultaneously accompanied produce, correspond to each other. 一个特性成立时必然伴随另一个特性的存在。 There is another must be accompanied by a characteristic feature of the establishment. 一个特性不存在另一个伴随的特性也必然丧失。 A feature not present another concomitant feature inevitably lost. 具体来说,设极化失配角为△,极化损耗为Lp,交叉极化隔离度为Sp,则根据电磁波理论可以得到它们之间的关系为: Specifically, it provided a supporting role to the polarization loss △, polarization loss Lp, cross polarization isolation is Sp, the relationship between them can be obtained according to the electromagnetic theory:

[0016] Lp=-201g (cos Δ ) dB [0016] Lp = -201g (cos Δ) dB

[0017] Sp=_201g (sin Δ ) dB (I) [0017] Sp = _201g (sin Δ) dB (I)

[0018] 由此可见,极化角的失配/误差将直接导致交叉极化隔离度下降。 [0018] Thus, the polarization angle mismatch / error will directly lead to decreased cross-polarization isolation. 反之,交叉极化隔离度的提高必然对应极化角误差的减小。 On the contrary, increase cross-polarization isolation must correspond to the polarization angle error is reduced.

[0019] 由电磁波理论可知,任意极化电磁波信号均可以分解为两个正交的极化电磁波信号,反之,两个正交极化电磁波信号也可以合成为单一的极化电磁波信号。 [0019] From electromagnetic theory, electromagnetic signals of any polarization can be decomposed into two orthogonal polarization electromagnetic wave signal, whereas two orthogonally polarized electromagnetic signals can also synthesize a single polarized wave signal.

[0020] 例如:一个线极化电磁波就可以分解为两个振幅相等、旋向相反的正交圆极化波。 [0020] For example: a linearly polarized electromagnetic wave can be divided into two equal amplitude, rotation in the opposite orthogonal circularly polarized waves.

[0021] 设沿Z轴传播的直线极化波E与Y轴的夹角为ω t,则 Angle [0021] disposed along the Z-axis linearly polarized wave propagating E and Y axis is ω t, then

[0022] E=E0e_J 0 z= [exE0cos ω t+eyE0s in ω t] e_J0z (2) [0022] E = E0e_J 0 z = [exE0cos ω t + eyE0s in ω t] e_J0z (2)

[0023]根据欧拉公式 coscotKePt+eft)/〗和sin ω t= (e.^-e_jUt)/2j,得到如下表达式: . [0023] According to Euler's formula coscotKePt + eft) /〗 and sin ω t = (e ^ - e_jUt) / 2j, obtain the following expression:

[0024] E=1/2E0 (exeJω'+jeye_Jω') e_Jωt+l/2E0 (exeJω'-jeye_Jω') e_Jω' (3) [0024] E = 1 / 2E0 (exeJω '+ jeye_Jω') e_Jωt + l / 2E0 (exeJω'-jeye_Jω ') e_Jω' (3)

[0025] 在该表达式中,右边第一项为左旋圆极化波,第二项为右旋圆极化波,而且两者振幅均为1/2&。 [0025] In this expression, the first term is left-hand circularly polarized wave, the second right-hand circularly polarized wave, and both the amplitude is 1/2 &. 通过对接收天线的极化角度进行调节,测量并比较上述获得的一对正交信号的幅值,能够在二者比值取得最大值时确定天线极化角的正确匹配。 Through the polarization angle of the reception antenna is adjusted, a pair of orthogonal amplitude signal and comparing said obtained measurements, it is possible to determine the correct matching of the antenna polarization angle obtained when the ratio of the maximum value of the two.

[0026] 本发明的核心是采用天线极化隔离动态测量方法替代难以工程实现的极化角动态测量或者如前所述的间接极化角测量方法,从而实现天线极化的动态对准。 Core [0026] The present invention is the use of dynamic measurement antenna polarization isolation method instead of difficult works to achieve dynamic measuring polarization angle or polarization angle indirect measurement method described above, in order to achieve the dynamic alignment of antenna polarization. 在工程上反映天线极化隔离情况的物理参数称为:极化隔离度。 Reflecting antenna polarization segregation in the engineering physics parameters as: polarization isolation. 本方法还可以描述为用极化隔离度的测量替代极化角测量,通过保持足够的极化隔离度(比如:极化隔离度> 30dB,通常可以在20-40dB之间设定一个判定阀值),来实现足够精度的天线极化角对准(比如:极化角误差彡0.2度)。 The method may also be described as an alternative measure polarization angle measuring polarization isolation by maintaining a sufficient degree of polarization isolation (for example: polarization isolation> 30dB, typically a decision can be set between 20-40dB valve value), to achieve sufficient accuracy angular alignment of antenna polarization (for example: San polarization angle error 0.2 degrees).

[0027] 虽然现有技术中对于卫星天线接收信号的极化隔离度的测量已经提出了多种有效的方法。 [0027] While the prior art for measuring polarization isolation satellite antenna to receive signals have been proposed many effective methods. 然而,这些技术方案是将极化隔离度作为正交极化卫星信号本身的一个静态质量指标进行考量,而不存在利用卫星天线接收信号的极化隔离度来动态控制极化角匹配的技术启示。 However, these solutions is the polarization isolation as a static orthogonally polarized satellite signal quality indicator in itself be considered without the presence of satellite antenna to receive polarization isolation signal to dynamically control the polarization angle revelation match . 而且,这些极化隔离度的测量方法也无法适应于动中通天线的应用。 Furthermore, measurements of the polarization isolation can not be adapted to the mobile communications antenna applications. 换言之,在本发明之前,现有技术中没有提出卫星天线接收信号的极化隔离度与天线极化角匹配(而不是信号强度最大或信号质量最好)之间具有直接紧密相关性的这一特征可以用来实现天线极化角动态跟踪的技术方案。 In other words, prior to the present invention, the prior art does not propose polarization isolation and polarization angle matching antenna satellite antenna to receive signals (instead of the maximum signal strength or signal quality is best) has a direct close correlation between this feature can be used to implement antenna polarization angle dynamic tracking technology solutions.

[0028] 天线极化隔离度变化敏感,相对较易测量,所以,此种方法可以获得比传统方法更高的极化角跟踪精度,同时又体现了利用极化隔离度抑制反极化信号干扰的本意,也更能反映出利用电磁波的极化特性抑制反极化干扰,实现极化复用的工程目的。 [0028] sensitive to changes in antenna polarization isolation, relatively easy to measure, so this method can get higher than conventional methods polarization angle tracking accuracy, but also reflects the use of polarization isolation anti-polarization interference suppression The intention is also to better reflect the use of electromagnetic waves of anti-polarization interference suppression polarization characteristics, the purpose of realization of the project polarization multiplexing.

[0029] 本发明提出了一种用于移动卫星通信天线的极化跟踪系统,其包括:卫星通信天线,包括接收天线和发射天线,用于接收和发射正交极化的卫星信号;极化隔离度测量部分,用于获取并测量一对正交极化信号的信号电平,计算所得信号电平的比值并将所述比值与预定阈值进行比较;和跟踪控制部分,用于基于所述极化隔离度测量部分输出的比较结果同步控制天线发射和接收极化角度的调节。 [0029] The present invention provides a system for polarization tracking antenna for mobile satellite communications, which include: satellite communications antennas, including the receiving antenna and the transmitting antenna for receiving and transmitting satellite signals orthogonal polarization; polarization isolation of the measuring part for obtaining and measuring a signal level orthogonally polarized signal ratio and the ratio calculated signal level with a predetermined threshold value; and tracking control section for, based on the Comparison of the results of the measurement part of the output polarization isolation synchronization control antenna transmission and reception polarization angle adjustment.

[0030] 所述极化隔离度测量部分还包括正交极化信号分解部分,用于根据从接收天线接收的卫星信号分解产生一对互为正交的极化信号。 [0030] The polarization isolation measurement section further comprises orthogonally polarized signal decomposing portion for decomposing generating a pair of mutually orthogonal polarized signals based on the satellite signal received from the receiving antenna.

[0031] 正交极化信号分解部分用于将从接收天线接收的卫星信号分解为一对正交极化信号,并且将所述一对正交极化信号同时输出至所述极化隔离度测量部分。 [0031] satellite signal into orthogonally polarized signals from the receiving antenna portion for receiving decomposed into a pair of orthogonal polarized signals, and said pair of orthogonally polarized signals simultaneously output to the polarization isolation measuring portion.

[0032] 在所述正交极化信号分解部分分解产生的一对正交极化信号中,通常其中一个分解后的信号与接收到的电磁波信号极化匹配,也就是真正的有用卫星信号或称为主极化信号,另一个分解后的信号与匹配的极化电磁波/主极化信号正交,是一种存在于交叉极化上的干扰信号。 [0032] In the pair of orthogonal polarization signals orthogonally polarized signal into said decomposition section, usually one of the decomposed signal and the received electromagnetic wave signal to match the polarization, which is really useful or satellite signals It called the main polarization signal, another decomposed signal and matching polarized wave / main orthogonal polarization signal, is present in a cross-polarization interference signal on. 在卫星通信上,这一对互为正交的极化信号通常对应于垂直极化信号和水平极化信号,或者对应于±45°正交极化信号。 On satellite communications, the pair of mutually orthogonal polarization signal generally corresponds to the vertically polarized signals and horizontally polarized signals to, or corresponding to ± 45 ° orthogonally polarized signal.

[0033] 当所述信号电平的比值小于预定阈值时,所述跟踪控制部分改变天线的极化角度,并控制所述极化隔离度测量部分再次执行测量和比较,直到比值大于或等于所述预定阈值,此时所述跟踪控制部分判定卫星通信天线实现极化角度匹配。 [0033] When the ratio of the signal level is less than a predetermined threshold value, the tracking control section changing the antenna polarization angle, and controls the polarization isolation measurement section performs measurement and comparison again until the ratio is greater than or equal to the predetermined threshold value, then the tracking control section determines the angle of polarization of satellite communications antenna to achieve matching.

[0034] 本发明的极化匹配/调节和极化波分解部分,可以采用多种方式实现,其中包括采用数字移相器方法、数字或模拟功分器方法、电机拖动圆波导内的旋转介质方法等多种方法进行天线的极化调节和对接收的信号进行极化分解。 [0034] The present invention polarization matching / adjustment and polarized wave decomposition section, you can use a variety of ways, including the use of digital phase shifter method, digital or analog power splitter method, rotary motor drive inside the circular waveguide The media carried a variety of methods, adjust the antenna polarization and polarization of the received signal decomposition. 而且,此种方法适用于任何类型的天线,包括:微带类阵列天线、波导类阵列天线、各种反射面类天线(包括抛物面天线、柱面反射器天线)等等。 Moreover, this method is suitable for any type of antenna, comprising: microstrip antenna array type waveguide array antenna type, the antenna of various classes reflecting surface (including a parabolic antenna, a cylindrical reflector antenna) and the like.

[0035] 根据本发明的实施例,按照预定周期执行极化隔离度的测量和比较,并且在判定卫星通信天线实现了正确的极化角度匹配之后,在预定周期内保持当前的极化角度。 [0035] According to an embodiment of the present invention, and a comparison measurement is performed in accordance with a predetermined polarization isolation period, and in the satellite communication antenna is determined to achieve the correct polarization to match the angle after a predetermined period to maintain the current in the polarization angle. 所述周期可以根据移动卫星通信应用的具体环境以及天线载体的运动/转动情况按需设置。 The period can be set according to the movement of the specific environment demand mobile satellite communications applications, and an antenna carrier / rotation situation.

[0036] 本发明还提出了一种用于移动卫星通信天线的极化跟踪方法,包括:1)通过卫星接收天线接收卫星信号;2)控制极化调节部件使得其中的一个极化信号与卫星信号极化匹配,从而使接收到的卫星信号达到最大;3)分解接收信号获得一对互为正交的极化信号并测量所述一对正交极化信号的信号电平;4)计算所获得的此对正交极化信号的电平比值,并将所述比值与预定阈值进行比较;和5)基于所述比较的结果控制接收天线极化角度的调节,使得正交的两个极化信号比值保持大于预定的阀值;6)同步等角度地调节发射和接收天线的极化调节器,使得发射和接收天线的极化同时实现同步跟踪。 [0036] The present invention also provides a polarization tracking method for mobile satellite communication antenna, comprising: 1) via satellite antenna to receive the satellite signal reception; 2) control the polarization adjusting member so that one polarization signal satellite polarization matching signal, so that the received satellite signal reaches the maximum; 3) decomposition of the received signal to obtain a pair of mutually orthogonal polarizations of a signal and measuring the signal level of the orthogonally polarized signal; 4) Calculation obtained on this level ratio orthogonally polarized signal, and the ratio is compared with a predetermined threshold value; and 5) based on the comparison result receiving antenna polarization angle adjustment control, so that two orthogonal polarized signal ratio remains greater than a predetermined threshold value; 6) angularly adjusting the synchronization transmitting and receiving antenna polarization controller such that polarization of the transmitting and receiving antenna while achieving synchronization tracking.

[0037] 当所述比值大于或等于所述预定阈值时,判定卫星通信天线实现极化角度匹配,并保持卫星通信天线当前的极化角度;以及当所述比值小于所述预定阈值时,改变卫星通信天线的极化角度,并再次执行步骤(I)至(5)。 [0037] When the ratio is greater than or equal to the predetermined threshold value, it is determined to achieve the polarization angle of the satellite communication antenna matching, and keep the current satellite communications antenna polarization angle; and when the ratio is less than the predetermined threshold value, change satellite communications antenna polarization angle, and repeat Step (I) to (5).

[0038] 对于发射天线的极化对准/匹配/跟踪,只要将发射天线与接收天线的极化角调节器在实验室预先标校一致(或在设计和制造上给予保证,或者用计算方法给与动态校正。并注意发射信号极化角与接收信号极化角两者之间互为正交),就可以用与接收天线极化调节角同步的、等值的调整方法调整发射天线的极化角(即:使发射天线的极化角在同一方向上调节相同角度),在实现接收天线极化对准/匹配/跟踪的同时,实现发射电磁波极化角和接收电磁波极化角的同步跟踪/实现发射天线和接收天线极化的同时对准。 [0038] / matches / track, as long as the transmit and receive antennas polarization angle regulator calibration laboratory previously agreed (or guarantee is given in the design and manufacture, or calculation method for transmitting antenna polarization aligned give dynamic correction. and note emission polarization angle between the two mutually orthogonal polarization angle signal with the received signal), you can use the receiving antenna polarization adjusting the angular synchronous, equivalent adjustment method for adjusting transmitting antenna polarization angle (ie: make the transmitting antenna polarization angle adjusting same angle in the same direction), in the realization of the receiving antenna polarization alignment / matching simultaneously / track to achieve emission and reception of electromagnetic wave electromagnetic wave polarization angle of polarization angle synchronous tracking / implementation transmit and you receive antennas simultaneously polarization alignment 虽然发射信号和接收信号在极化角度上通常相差90度,而且,使用频率也有所不同,但这只是一个恒定的极化角度差值,并不影响本原理的使用。 While transmit and receive signals in polarization angle of the usual 90 degrees, and the frequency of use are different, but this is just a constant polarization angle difference does not affect the use of this principle. 因此,本发明是一种可以同时动态调整/跟踪/匹配发射天线极化角和接收天线极化角的方法。 Thus, the present invention is a can dynamically adjust / tracking / method for transmitting and receiving antenna polarization angle antenna polarization angle match.

附图说明 Brief Description

[0039] 通过结合附图的以下描述,将会更容易地理解本发明并且更容易地理解其伴随的优点和特征,其中: [0039] the following description in conjunction with the accompanying drawings, will be more readily understood and the present invention is more readily understood attendant advantages and features thereof, wherein:

[0040] 图1是根据本发明的用于移动卫星通信天线的极化跟踪系统的总体结构框图; [0040] FIG. 1 is a general block diagram of the present invention is used in mobile satellite communications antenna polarization tracking system based on;

[0041] 图2是根据本发明第一实施例的使用阵列天线的极化跟踪系统的结构框图; [0041] FIG. 2 is a block diagram using an array antenna polarization tracking system of the first embodiment of the present invention;

[0042] 图3是根据本发明第二实施例的使用抛物面天线的极化跟踪系统的结构框图; [0042] FIG. 3 is a block diagram according to a second embodiment of the present invention a parabolic antenna polarization tracking system;

[0043] 图4是根据本发明的移动卫星通信天线极化跟踪方法的流程图;和 [0043] FIG. 4 is a flowchart of mobile satellite communications antenna polarization tracking method of the present invention; and

[0044] 图5是正交极化信号分解部分的一种不例实施方式。 [0044] FIG. 5 is a partially exploded orthogonal polarization signals without the embodiment.

具体实施方式 DETAILED DESCRIPTION

[0045] 为了使本发明的内容更加清楚和易于理解,下面结合附图对本发明的具体实施例进行详细描述。 [0045] In order to make the content of the present invention will become clear and easy to understand, with reference to the following specific embodiments of the present invention will be described in detail. 在本发明中,以示例方式,对本发明提出的天线极化跟踪系统及方法的原理和示例实施方式进行了说明,但是本发明不限于所公开的优选实施例的具体形式。 In the present invention, by way of example, the antenna polarization tracking system and method of the present invention provides the principles and example embodiments have been described, but the present invention is not limited to the specific forms disclosed preferred embodiment. 所属领域的技术人员可以根据本发明公开的内容对本发明进行修改和变型,这些修改和变型也应当属于由权利要求限定的本发明保护的范围。 Those skilled in the art of the present invention can be modified and variations according to the present disclosure, such modifications and variations should be within the scope defined by the claims of the present invention to protect.

[0046] 如图1所示,本发明的移动卫星通信天线极化跟踪系统包括卫星通信天线1、极化隔离度测量部分3和跟踪控制部分4。 [0046] 1, the mobile satellite communications antenna polarization tracking system of the present invention comprises a satellite communication antenna, polarization isolation measurement and tracking control section 3 section 4. 在极化隔离度测量部分3中进一步提供了正交极化信号分解部分2,用于对接收到的卫星信号进行分解处理,并输出一对垂直极化和水平极化的正交极化信号,或者其它具有正交极化特征的一组信号,例如±45°正交极化信号。 In the polarization isolation measurement portion 3 is further provided a separating portion 2 orthogonal polarization signals, the received satellite signals for decomposition treatment, and outputs a pair of vertical polarization and horizontal polarization orthogonal polarization signals , or other signal having a set of orthogonal polarization characteristics, e.g., ± 45 ° orthogonal polarization signals.

[0047] 极化隔离度测量部分3对从正交极化信号分解部分2输出的一组正交极化信号的功率进行测量并计算二者的比值,以计算极化隔离度Sp。 [0047] polarization isolation three pairs of power measuring portion 2 an exploded section orthogonal polarization signals outputted from a set of orthogonal polarization signals is measured and the calculated ratio of the two, to calculate the polarization isolation Sp. 极化隔离度Sp的计算如公式(4)所示: Polarization isolation Sp calculated as Equation (4) below:

[0048] Sp (dB) =201og10 (E1/E2) (4) [0048] Sp (dB) = 201og10 (E1 / E2) (4)

[0049] 如果极化隔离度Sp小于某个预先设定的阈值(比如30dB),则跟踪控制部分4向卫星通信天线中包括的极化角度调节部分7发出控制信号,同步、等角度地改变两个正交的极化角度,然后重复执行极化隔离度的测量和比较操作,直到天线的极化隔离度回到预定的匹配水平(如不小于30dB),从而实现接收和发射天线的自动极化跟踪。 Change [0049] If the polarization isolation Sp is less than a predetermined threshold value (eg 30dB), the tracking control section 4 adjust to the angle of polarization included satellite communication antenna section 7 sends a control signal, synchronization, and other angularly two orthogonal polarization angle, then repeat the isolation of polarization measurements and comparisons of operations until polarization antenna isolation back to a predetermined level of matching (if not less than 30dB), enabling automatic receiving and transmitting antennas polarization tracking.

[0050] 图2示出了根据本发明第一实施例的使用阵列天线的极化跟踪系统的结构框图(所使用的天线可以是相控阵天线、微带阵列天线、波导类阵列天线等)。 [0050] FIG. 2 shows (antennas used can be phased array antennas, microstrip antenna array waveguide array antenna type, etc.) block diagram of the polarization tracking system using an array antenna according to the first embodiment of the present invention . 阵列天线具有波束控制灵活、指向改变迅速等优点,有利于在本发明的框架下实现快速有效的极化角度调节,特别适合于高速移动条件下的动中通应用。 Array antenna having a flexible beam control, point to the advantages of rapid change, help within the framework of the present invention to achieve rapid and effective polarization angle adjustment, especially suitable for mobile communications applications under the high-speed mobile conditions. 此外,数字移相器的体积小、成本低,能够降低整个系统的制造和使用成本。 In addition, the digital phase shifter small size, low cost, and can reduce the manufacturing cost of the entire system.

[0051] 如图2所示,卫星通信天线I由阵列天线Ia构成,极化隔离度测量部分3中的正交极化信号分解部分2根据接收到的卫星信号分解出一组正交的数字极化信号,跟踪控制部分4基于极化隔离度测量部分3针对极化隔离度的计算结果控制数字移相器5来调节阵列天线Ia的极化角度。 [0051] 2, the satellite communication antenna I consists of an array antenna Ia, polarization isolation measurement portion 3 orthogonally polarized signal into part 2 according to the received satellite signal into a set of orthogonal digital polarized signal, the tracking control section 4 based on polarization isolation portion 3 for measuring results polarization isolation digital phase shifter control 5 to adjust the angle of polarization of the array antenna Ia.

[0052] 图3示出了根据本发明第二实施例的使用反射面天线的极化跟踪系统的结构框图。 [0052] FIG. 3 shows a block diagram using reflector antenna polarization tracking system according to a second embodiment of the present invention.

[0053] 反射面天线的姿态调整需要利用电机进行机械调节,调节速度和灵活度受到限制,同时反射面天线的外形体积和重量较大,对于空间较小的车载应用等构成了额外的成本。 [0053] attitude adjustment reflector antennas need to use motor mechanical adjustment, adjust the speed and flexibility is limited, while the shape of a large reflector antenna size and weight of a small car for space applications constitute the extra cost. 不过,反射面天线(例如抛物面天线)具有增益高、带宽高等优点,因此适合于需要保证足够的带宽和增益裕量以满足大数据量通信需求的应急通信等场合。 However, the reflector antenna (such as parabolic antennas) has a high gain bandwidth advantages, and therefore suitable for the need to ensure adequate bandwidth and gain margin to meet the large volume of data communications needs of emergency communications and other occasions.

[0054] 如图3所示,卫星通信天线I由反射面天线Ib构成,极化隔离度测量部分3中的正交极化信号分解部分2根据接收到的卫星信号分解出一组正交的数字极化信号,跟踪控制部分4基于极化隔离度测量部分3针对极化隔离度的计算结果向接收/发射极化调节电机6输出模拟控制信号,以驱动接收/发射极化调节电机6改变天线的极化角度。 [0054] 3, I composed a satellite communication antenna reflector antenna Ib, polarization isolation measurement section 3 section 2 orthogonally polarized signal into the satellite based on the received signal into a set of orthogonal digital polarization signal, the tracking control section 4 section 3 for measuring results polarization isolation to receive / transmit polarization adjustment motor 6 output analogue control signal based on the polarization isolation, to drive the receive / transmit polarization adjustment motor 6 change the angle of polarization of the antenna. 通常可以将天线的极化调节和接收电磁波信号的正交分解同时实现。 Usually orthogonal decomposition antenna polarization adjustment and receiving electromagnetic signals while achieving.

[0055] 图4示出了根据本发明的移动卫星通信天线极化跟踪方法的流程图。 [0055] FIG. 4 shows a flowchart of a mobile satellite communications antenna polarization tracking method of the present invention. 根据本发明的移动卫星通信天线极化跟踪方法包括: The mobile satellite communication antenna polarization tracking method of the present invention comprises:

[0056] 步骤SI)通过卫星接收天线接收卫星信号; [0056] Step SI) receive the satellite signal through a satellite dish;

[0057] 步骤S2)调节天线的极化角和通过分解接收信号获得一对正交极化的信号; [0057] Step S2) adjust the antenna polarization angle and get a pair of orthogonally polarized signal by decomposing the received signal;

[0058] 步骤S3)测量所述一对正交极化信号的信号电平,计算所获得的一对正交极化信号的电平比值,并将所述比值与预定阈值进行比较,以确定该比值是否大于预设阈值; [0058] Step S3) a measurement of the signal level of the orthogonally polarized signal, a pair of orthogonally polarized signal level ratio obtained by calculation, and the ratio is compared with a predetermined threshold value to determine This ratio is greater than a predetermined threshold;

[0059] 步骤S4)如果判定结果为是,则进入步骤S6),判定天线达到极化匹配状态,进而在预定周期内锁定极化角度以保持此状态; [0059] Step S4) If the decision result is YES, the process proceeds to step S6), to achieve polarization antenna matching state is determined, and then locked in a predetermined period of polarization angle in order to maintain this state;

[0060] 如果判定结果为否,则进入步骤S5),进一步调节卫星天线的极化角度,然后返回步骤SI并重复SI至S4的处理。 [0060] If the determination result is NO, the process proceeds to step S5), and further adjusting the angle of polarization of the satellite antenna, and then repeats the processing returns to step SI SI to S4.

[0061] 图5示出了应用于根据本发明的极化跟踪系统中的正交极化信号提供部分2的一种示例装置,用于将线极化电磁波分解成为正交的两个圆极化电磁波。 [0061] Figure 5 illustrates an exemplary apparatus provided apply to section 2 of the polarization tracking system according to the present invention, the orthogonal polarization signals, for linearly polarized electromagnetic wave breaks down into two circles orthogonal pole of electromagnetic waves. 图5所示的正交极化信号提供部分2由矩形波导21、矩-圆过渡波导22和与其连接的内部装有介质片的圆波导23构成。 Orthogonal polarization signals shown in FIG. 5 provided by the rectangular waveguide 21 section 2, rectangular - circular intermediate waveguide 22 connected thereto and the internal circular waveguide containing media sheet 23 constituted. 工作时,TElO波经由矩形波导21输入,通过矩-圆过渡波导22转换成圆波导23中的TEll模。 Work, TElO wave input via the rectangular waveguide 21, through moments - circular waveguide transition 22 is converted into a circular waveguide 23 TEll mold. 当圆波导23中的吸收片32相对于水平面旋转Θ角度时,即可将电场E1分解成与吸收片32垂直的E丄分量和与吸收片32平行的E Il分量,其中El = E1Cos Θ ,E Il =E1S in Θ。 When the circular waveguide 23, the absorbent sheet 32 relative to the horizontal rotation angle Θ, can be broken down into field E1 and the absorbent sheet 32 E Shang vertical component and a component of the absorbent sheet 32 E Il parallel, where El = E1Cos Θ, E Il = E1S in Θ.

[0062] 旋转此介质片32可以实现与不同极化角的输入电磁波进行极化角度的匹配,并在此基础之上将输入电磁波分解为两个相互正交的极化电磁波分量。 [0062] The media rotation piece 32 can be achieved with input electromagnetic waves of different polarization angle to match the angle of polarization, and on this basis will enter the electromagnetic wave into two orthogonal polarized wave components.

[0063] 最后应说明的是:以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的精神和范围。 [0063] Finally, it should be noted that: the above embodiments are merely provided for describing the technical solutions of the present invention, not limitation, although with reference to the preferred embodiment of the present invention has been described in detail, one of ordinary skill in the art will appreciate that the present invention can The technical program modifications or equivalent substitutions without departing from the spirit and scope of the present invention the technical solution.

Citations de brevets
Brevet cité Date de dépôt Date de publication Déposant Titre
CN101916918A *1 juil. 201015 déc. 2010中国电子科技集团公司第五十四研究所Automatically polarized adjustment antenna system and polarization calibration method thereof
US20050260954 *5 août 200224 nov. 2005Hamalainen Jyri KTransmission diversity with two cross-polarised antennas arrays
US20100164801 *8 mai 20081 juil. 2010Bon-Jun KuDevice for tracking polarization
Citations hors brevets
Référence
1 *"动中通"接收天线极化匹配及跟踪技术研究;王道平等;《现代电子技术》;20091231(第12期);第103-105页
2 *王道平等: ""动中通"接收天线极化匹配及跟踪技术研究", 《现代电子技术》
Référencé par
Brevet citant Date de dépôt Date de publication Déposant Titre
CN105162489A *24 août 201516 déc. 2015联想(北京)有限公司通信设备
Classifications
Classification internationaleH01Q3/38
Événements juridiques
DateCodeÉvénementDescription
3 déc. 2014C06Publication
31 déc. 2014C10Entry into substantive examination
3 oct. 2017GR01