CN1330974C - Method for improving satellite searching ability of global positioning system receiver - Google Patents
Method for improving satellite searching ability of global positioning system receiver Download PDFInfo
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- CN1330974C CN1330974C CNB02135183XA CN02135183A CN1330974C CN 1330974 C CN1330974 C CN 1330974C CN B02135183X A CNB02135183X A CN B02135183XA CN 02135183 A CN02135183 A CN 02135183A CN 1330974 C CN1330974 C CN 1330974C
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Abstract
The present invention relates to a method for using global positioning systems (GPS) to carry out positioning, which is used for environment interference resistance of GPS receivers at vehicle mobile terminals in vehicle monitoring and management for ensuring timely positioning. The method is characterized in that a program is run on a GPS receiver supporting input positioning accuracy parameter setting and a mobile terminal supporting GPS data processing and GPS receiver parameter setting; the program controls that when the positioning data reading of the GPS receiver is invalid in a high accuracy mode, the setting parameters of the positioning accuracy of the GPS receiver are modified for causing the GPS receiver to work in a low accuracy mode; when the positioning data reading of the GPS receiver is effective in the low accuracy mode, the setting parameters of the positioning accuracy of the GPS receiver are modified for causing the GPS receiver to work in the high accuracy mode.
Description
Technical field
The invention belongs to the employing wireless electric wave by the method that the cooperation of determining two or more distances positions, especially use the method for GPS (GPS) location.
Background technology
In the supervision and management of moving vehicle, using the vehicle mobile terminals with GPS (GPS) is a kind of brand-new selection.It can provide the locating information such as longitude and latitude, speed and direction of vehicle at any time to the dispatching center.The locating information modes such as (location) that locating information (warning) that the dispatching center provides when employing is extracted controlled vehicle location information (monitoring), the controlled car alarming of acceptance by fixing monitoring period usually and whole process are accepted controlled vehicle and provided is managed moving vehicle.The locating information precision of setting accuracy (PDOP) the value regulation GPS receiver of the GPS receiver of vehicle mobile terminals, the more little GPS receiver of PDOP value bearing accuracy is high more.When PDOP＜5, the GPS operation of receiver is at high precision mode; When 10 〉=PDOP＞5, the GPS operation of receiver is in low accuracy modes.The GPS receiver is made error judgment to the locator data that receives by PDOP value regulation, abandons the locator data above permissible error.That is to say, in the invalid locator data of high precision mode, might be effective locator data in low accuracy modes.The GPS receiver of vehicle mobile terminals at work can be because of It is gloomy, the interference of environment such as high-lager building is arranged on every side, can't receive effective locator data for a long time at high precision mode.At this moment claim GPS receiver satellite searching ability to reduce.For solving this class problem, the designer takes to allow manually to adjust GPS receiver PDOP usually parameter is set, and forces the GPS receiver to change low accuracy modes work over to by high precision mode; Or the design of modification GPS receiver, strengthen anti-environmental interference performance from hardware aspect; Satellite searching ability is improved.Preceding a kind of method can not satisfy the changeable demand of actual conditions, and a kind of method in back has increased the complicacy of GPS receiver, has increased the cost of system.
Summary of the invention
The present invention aims to provide and a kind ofly can satisfy the changeable demand of actual conditions, does not increase the complicacy of GPS receiver, improves the method for GPS receiver satellite searching ability.
The objective of the invention is to realize by following scheme: a kind of method that improves satellite searching ability of global positioning system receiver, running into the occasion of environmental interference, strive for guaranteeing that with automatic reduction bearing accuracy receiver in time locatees; And do not having the occasion of environmental interference, recover bearing accuracy automatically and remain on the high precision mode location.It is characterized in that: support the GPS receiver that input setting accuracy parameter is provided with and support gps data to handle operation one program on the portable terminal that is provided with the GPS receiver parameters having, this programmed control: the GPS receiver be in read under the high precision mode locator data invalid after, revise GPS receiver setting accuracy parameter is set, make it change low accuracy modes work over to; The GPS receiver be in read under the low accuracy modes locator data effectively after, revise GPS receiver setting accuracy parameter be set, make it change high precision mode work over to.
The duty of described GPS receiver will keep certain stability: described programmed control: be under the high precision mode at the GPS receiver that locator data is invalid to be surpassed the very first time and still can not obtain effective locator data at interval from reading for the first time, revise GPS receiver setting accuracy parameter is set, make it change low accuracy modes work over to; Be in the time that reads effective locator data under the low accuracy modes continuously at the GPS receiver and surpassed for second time interval, revise GPS receiver setting accuracy parameter is set, make it change high precision mode work over to.
And then described programmed control also comprises: attempted repeatedly the very first time at interval and the operation of second time interval still can't stable position after, with the very first time at interval and second time interval press certain coefficient amplification, reorientate.
For monitor state, if the numerical value of monitoring period greater than the very first time at interval numerical value and less than the very first time at interval numerical value and during the numerical value sum in second time interval, described programmed control: in a monitoring period, reduce precision, if after obtaining valid data, then when next monitoring period begins, just adjust to the high precision state, reorientate.
For positioning states, if the numerical value of locating periodically greater than the very first time at interval numerical value and less than the very first time at interval numerical value and during the numerical value sum in second time interval, described programmed control: under positioning states, when in a locating periodically, reducing precision, if after obtaining valid data, then when next locating periodically begins, just adjust to the high precision state, reorientate.
A kind of method that improves satellite searching ability of global positioning system receiver of the present invention, support the GPS receiver that input setting accuracy parameter is provided with and support gps data to handle operation one program on the portable terminal that is provided with the GPS receiver parameters having, this programmed control is running into the occasion of environmental interference, strives for guaranteeing that with automatic reduction bearing accuracy receiver in time locatees; And do not having the occasion of environmental interference, recover bearing accuracy automatically and keep the high precision mode location.It can be provided with parameter adjustment to GPS receiver PDOP at any time, to satisfy the requirement of monitoring management to timely location, has real-time.It only is provided with parameter adjustment to GPS receiver PDOP, need not to change the design of existing GPS receiver, does not need the support of other external unit, and the cost of realization is low.GPS receiver PDOP is provided with the process of parameter adjustment and is finished automatically by the microprocessor of portable terminal, only takies the microprocessor resources of portable terminal, and is convenient and simple.It makes the adjustment of GPS receiver parameters more reasonable by the very first time interval and second time interval are set in program, particularly introduces the correction of very first time interval with second time interval, makes the GPS operation of receiver more stable.It makes portable terminal can both keep optimal positioning states under different mode of operations by the treatment of special situation to monitor state and positioning states is set in program.
Embodiment
The present invention improves the method for satellite searching ability of global positioning system receiver, and purport is: running into the occasion of environmental interference, striving for guaranteeing that with automatic reduction bearing accuracy receiver in time locatees; And do not having the occasion of environmental interference, recover bearing accuracy automatically and keep the high precision mode location.
One embodiment of the present invention are: handle operation one program on the portable terminal that is provided with the GPS receiver parameters at GPS receiver with input and support gps data, this programmed control: the GPS receiver be in read under the high precision mode locator data invalid after, revise GPS receiver setting accuracy parameter is set, make it change low accuracy modes work over to; The GPS receiver be in read under the low accuracy modes locator data effectively after, revise GPS receiver setting accuracy parameter be set, make it change high precision mode work over to.
For example, whether regulation is effective from the locator data that the GPS receiver reads, and whether surpasses the permissible error decision by the inferior numerical value that receives of GPS receiver N continuous, and the inferior numerical value that receives of N continuous is within the permissible error scope, the result of piloting data is effective, otherwise locator data is invalid.Regulation again: it is 2 that GPS receiver setting accuracy is provided with parameter value, makes it change low accuracy modes work over to, promptly GPS receiver setting accuracy between 10 〉=PDOP＞5 by the receiver-autonomous adjustment of GPS; It is 1 that GPS receiver setting accuracy is provided with parameter value, makes it change high precision mode work over to, promptly GPS receiver setting accuracy between PDOP＜5 by the receiver-autonomous adjustment of GPS.
According to this regulation, present embodiment is under the high precision mode at the GPS receiver and the numerical value that N continuous time receives takes place surpasses permissible error, and it is invalid to cause said procedure to read by the locator data of the numerical value reckoning that receives for this N time.At this time, this programmed control is provided with port input GPS receiver setting accuracy to the setting accuracy parameter of GPS receiver parameter value 2 is set, and makes it change low accuracy modes work over to, and the GPS receiver is the autonomous setting accuracy of adjusting between 10 〉=PDOP＞5.And if be under the height pattern at the GPS receiver and numerical value that N continuous time receives take place within permissible error the time, this program reads by the locator data of the numerical value reckoning that receives for this N time effective.This programmed control is provided with port input GPS receiver setting accuracy to the setting accuracy parameter of GPS receiver parameter value 1 is set, and makes it change high precision mode work over to, and the GPS receiver is the autonomous setting accuracy of adjusting between 5 〉=PDOP.This embodiment of present embodiment has the sudden environmental interference of high-lager building on every side when handling vehicle ', relatively effectively, and weather becomes cloudy slow property environmental interference when handling vehicle ', and the duty adjustment of the GPS receiver that then seems is frequent, and effect is desirable not to the utmost.
For the duty that makes the GPS receiver will keep certain stability, another embodiment of the present invention is: but on the portable terminal of the GPS receiver with input parameter setting and processing of support gps data and the setting of GPS receiver parameters, move a program, this programmed control: be under the high precision mode at the GPS receiver that locator data is invalid to be surpassed the very first time and still can not obtain effective locator data at interval from reading for the first time, revise GPS receiver setting accuracy parameter is set, make it change low accuracy modes work over to; Be in the time that reads effective locator data under the low accuracy modes continuously at the GPS receiver and surpassed for second time interval, revise GPS receiver setting accuracy parameter is set, make it change high precision mode work over to.
Portable terminal regularly reads gps data from the GPS receiver, and judges whether resulting data are effective.This cycle regularly is for reading the gps data cycle.Described very first time at interval and second time interval should read the gps data cycle greater than 3 to 4, their concrete numerical value can be rule of thumb or test definite.In comparing rugged environment, the method that also can adopt classification to adjust, that is: attempted repeatedly the very first time at interval and the operation of second time interval still can't stable position after, with the very first time at interval and second time interval press certain coefficient amplification, reorientate.Avoiding number of attempt too much, and the acquisition process gps data is less, thereby influences getting in touch of portable terminal and dispatching center.For example portable terminal is usually operated in the more special rugged environments such as densely covered metropolis of high buildings and large mansions or outlying mountain area, and above-mentioned coefficient settings is between 1.5 to 2.0; Portable terminal is usually operated at the less mountain area in the more big city of high buildings and large mansions or base station etc. relatively in the rugged environment, and above-mentioned coefficient settings is between 1.0 to 1.5.
Be in monitoring mode at portable terminal, the dispatching center extracts controlled vehicle location information by fixing monitoring period.The numerical value of monitoring period may not be the integral multiple of reading the gps data cycle.Under the situation of numerical value greater than very first time numerical value at interval of monitoring period, just might allow the GPS receiver is provided with parameter adjustment, otherwise can not use method of the present invention at monitoring mode.When the numerical value of monitoring period when numerical value at interval is with the numerical value sum in second time interval greater than the very first time, still operate as stated above.And when the numerical value of monitoring period greater than very first time numerical value at interval less than the very first time at interval numerical value and during the numerical value sum in second time interval, can do part correction to said method, that is: in a monitoring period, reduce precision, if after obtaining valid data, then when next monitoring period begins, just adjust to the high precision state, reorientate.
Be in station-keeping mode at portable terminal, portable terminal is is initiatively reported and submitted vehicle location information to the dispatching center.If to the time interval of reporting and submitting vehicle location information is that timing cycle does not require, still be suitable for the aforementioned method of handling by the very first time interval and second time interval.If the timing cycle of reporting and submitting vehicle location information is had requirement, handle with reference to monitoring mode.
Claims (5)
1. method that improves satellite searching ability of global positioning system receiver, it is characterized in that: support the GPS receiver that input setting accuracy parameter is provided with and support gps data to handle operation one program on the portable terminal that is provided with the GPS receiver parameters having, this programmed control: the GPS receiver be in read under the high precision mode locator data invalid after, revise GPS receiver setting accuracy parameter is set, make it change low accuracy modes work over to; The GPS receiver be in read under the low accuracy modes locator data effectively after, revise GPS receiver setting accuracy parameter be set, make it change high precision mode work over to.
2. the method for raising satellite searching ability of global positioning system receiver according to claim 1, it is characterized in that: described programmed control: be under the high precision mode at the GPS receiver that locator data is invalid to be surpassed the very first time and still can not obtain effective locator data at interval from reading for the first time, revise GPS receiver setting accuracy parameter is set, make it change low accuracy modes work over to; Be in the time that reads effective locator data under the low accuracy modes continuously at the GPS receiver and surpassed for second time interval, revise GPS receiver setting accuracy parameter is set, make it change high precision mode work over to.
3. the method for raising satellite searching ability of global positioning system receiver according to claim 2, it is characterized in that: described programmed control also comprises: attempted repeatedly the very first time at interval and second time interval operate still can't stable position after, the very first time interval and second time interval are amplified by certain coefficient, reorientate.
4. according to the method for claim 1 or 2 or 3 described raising satellite searching ability of global positioning system receiver, it is characterized in that: described programmed control: under monitor state, when the numerical value of monitoring period greater than the very first time at interval numerical value and less than the very first time at interval numerical value and during the numerical value sum in second time interval, in a monitoring period, reduce precision, if after obtaining valid data, then when next monitoring period begins, just adjust to the high precision state, reorientate.
5. according to the method for claim 1 or 2 or 3 described raising satellite searching ability of global positioning system receiver, it is characterized in that: described programmed control: under positioning states, when the numerical value of locating periodically greater than the very first time at interval numerical value and less than the very first time at interval numerical value and during the numerical value sum in second time interval, in a locating periodically, reduce precision, if after obtaining valid data, then when next locating periodically begins, just adjust to the high precision state, reorientate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02135183XA CN1330974C (en) | 2002-07-12 | 2002-07-12 | Method for improving satellite searching ability of global positioning system receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02135183XA CN1330974C (en) | 2002-07-12 | 2002-07-12 | Method for improving satellite searching ability of global positioning system receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1467508A CN1467508A (en) | 2004-01-14 |
| CN1330974C true CN1330974C (en) | 2007-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB02135183XA Expired - Lifetime CN1330974C (en) | 2002-07-12 | 2002-07-12 | Method for improving satellite searching ability of global positioning system receiver |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4575818B2 (en) * | 2005-03-24 | 2010-11-04 | Ｏｋｉセミコンダクタ株式会社 | Bias circuit for amplifier circuit |
| US7642958B2 (en) * | 2005-06-21 | 2010-01-05 | Motorola, Inc. | Satellite positioning system receivers and methods |
| CN110099395B (en) * | 2018-01-30 | 2022-04-15 | 中国移动通信有限公司研究院 | Information processing method, equipment, terminal and computer storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5293318A (en) * | 1991-07-10 | 1994-03-08 | Pioneer Electronic Corporation | Navigation system |
| US5590043A (en) * | 1993-06-17 | 1996-12-31 | Trimble Navigation Limited | Satellite positioning system filter |
| CN1311568A (en) * | 2000-03-02 | 2001-09-05 | 索尼公司 | Global positioning system receiver and its receiving method |
-
2002
- 2002-07-12 CN CNB02135183XA patent/CN1330974C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5293318A (en) * | 1991-07-10 | 1994-03-08 | Pioneer Electronic Corporation | Navigation system |
| US5590043A (en) * | 1993-06-17 | 1996-12-31 | Trimble Navigation Limited | Satellite positioning system filter |
| CN1311568A (en) * | 2000-03-02 | 2001-09-05 | 索尼公司 | Global positioning system receiver and its receiving method |
Non-Patent Citations (1)
| Title |
|---|
| GPS信号捕获与跟踪策略确定及实现 孙礼、王银锋、何川、张其善，北京航空航天大学学报，第25卷第2期 1999 * |
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| Publication number | Publication date |
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| CN1467508A (en) | 2004-01-14 |
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Granted publication date: 20070808 |