WO2001096901A3 - Low probability of intercept coherent radar altimeter - Google Patents

Low probability of intercept coherent radar altimeter Download PDF

Info

Publication number
WO2001096901A3
WO2001096901A3 PCT/US2001/018833 US0118833W WO0196901A3 WO 2001096901 A3 WO2001096901 A3 WO 2001096901A3 US 0118833 W US0118833 W US 0118833W WO 0196901 A3 WO0196901 A3 WO 0196901A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
modulated
digital
digital samples
digitizer
Prior art date
Application number
PCT/US2001/018833
Other languages
French (fr)
Other versions
WO2001096901A2 (en
Inventor
James R Hager
John H Keuper
Curtis J Petrich
Original Assignee
Honeywell Int Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honeywell Int Inc filed Critical Honeywell Int Inc
Priority to JP2002510972A priority Critical patent/JP2004503788A/en
Priority to DE60133547T priority patent/DE60133547D1/en
Priority to CA002412907A priority patent/CA2412907A1/en
Priority to EP01952148A priority patent/EP1290470B1/en
Publication of WO2001096901A2 publication Critical patent/WO2001096901A2/en
Publication of WO2001096901A3 publication Critical patent/WO2001096901A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • G01S7/4004—Means for monitoring or calibrating of parts of a radar system
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/26—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G01S7/032—Constructional details for solid-state radar subsystems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/882—Radar or analogous systems specially adapted for specific applications for altimeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S2013/0236—Special technical features
    • G01S2013/0281—LPI, Low Probability of Intercept radar
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • G01S7/4004—Means for monitoring or calibrating of parts of a radar system
    • G01S7/4008—Means for monitoring or calibrating of parts of a radar system of transmitters

Abstract

A radar altimeter for determining altitude of an air vehicle with respect to ground comprises a digital sequencer for digitally modulating a first signal. A transmitter coupled to the digital sequencer transmits a radar signal including the modulated first signal toward the ground. A receiver receives a reflected radar signal from the ground. The received radar signal includes the modulated first signal. A digitizer coupled to the receiver generates digital samples of the modulated first signal. A digital signal processor coupled to the digitizer receives digital samples of the modulated first signal from the digitizer, demodulates the received digital samples, processes the demodulated digital samples and outputs altitude data based on the demodulated digital samples.
PCT/US2001/018833 2000-06-15 2001-06-11 Low probability of intercept coherent radar altimeter WO2001096901A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2002510972A JP2004503788A (en) 2000-06-15 2001-06-11 Low intercept possibility coherent radar altimeter
DE60133547T DE60133547D1 (en) 2000-06-15 2001-06-11 Low probability of intercept kohärenter radarhöhenmesser
CA002412907A CA2412907A1 (en) 2000-06-15 2001-06-11 Low probability of intercept coherent radar altimeter
EP01952148A EP1290470B1 (en) 2000-06-15 2001-06-11 Low probability of intercept coherent radar altimeter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/594,653 2000-06-15
US09/594,653 US6407697B1 (en) 2000-06-15 2000-06-15 Low probability of intercept coherent radar altimeter

Publications (2)

Publication Number Publication Date
WO2001096901A2 WO2001096901A2 (en) 2001-12-20
WO2001096901A3 true WO2001096901A3 (en) 2002-05-30

Family

ID=24379805

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/018833 WO2001096901A2 (en) 2000-06-15 2001-06-11 Low probability of intercept coherent radar altimeter

Country Status (7)

Country Link
US (1) US6407697B1 (en)
EP (1) EP1290470B1 (en)
JP (1) JP2004503788A (en)
AT (1) ATE391931T1 (en)
CA (1) CA2412907A1 (en)
DE (1) DE60133547D1 (en)
WO (1) WO2001096901A2 (en)

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US6950056B2 (en) * 2002-05-13 2005-09-27 Honeywell International Inc. Methods and apparatus for determination of a filter center frequency
US20030210176A1 (en) * 2002-05-13 2003-11-13 Hager James R. Methods and apparatus for resolution of radar range ambiguities
JPWO2004095058A1 (en) * 2003-04-22 2006-07-13 株式会社島精機製作所 Distance measuring method and apparatus
US6731234B1 (en) * 2003-06-11 2004-05-04 Honeywell International Inc. Radar anti-fade systems and methods
US7064703B2 (en) * 2004-02-17 2006-06-20 Honeywell International Inc. Methods and apparatus for randomly modulating radar altimeters
US7409293B2 (en) * 2004-06-03 2008-08-05 Honeywell International Inc. Methods and systems for enhancing accuracy of terrain aided navigation systems
US7075478B2 (en) * 2004-06-07 2006-07-11 Honeywell International Inc. Radar altimeter having an automatically calibrated sensitivity range control function
US7138940B2 (en) * 2004-07-22 2006-11-21 Honeywell International Inc. Method and systems for automatic zero calibration of radar altimeters
US7239266B2 (en) * 2004-08-26 2007-07-03 Honeywell International Inc. Radar altimeter
US20070086133A1 (en) * 2005-10-18 2007-04-19 Eaton Corporation Network system for safe connection of generation into a network power system
US20070085727A1 (en) * 2005-10-19 2007-04-19 Honeywell International Inc. Methods and systems for leakage cancellation in radar equipped munitions
US7486221B2 (en) * 2005-11-18 2009-02-03 Honeywell International Inc. Methods and systems for using pulsed radar for communications transparent to radar function
US7705773B2 (en) * 2005-12-19 2010-04-27 Honeywell International Inc. Self-calibrating a radar altimeter based on a simulated return signal
US7463187B2 (en) * 2006-09-27 2008-12-09 Honeywell International Inc. Method and system of improving altimeter accuracy by use of a separate peak return signal tracking
JP4500299B2 (en) * 2006-11-14 2010-07-14 日本航空電子工業株式会社 Radio altimeter
GB0701812D0 (en) * 2007-01-31 2007-03-14 Qinetiq Ltd Antenna system and radar system incorporating the same
US7728758B2 (en) * 2007-03-07 2010-06-01 Honeywell International Inc. Method and system for maintaining spatio-temporal data
US7714774B2 (en) * 2007-09-06 2010-05-11 Honeywell International Inc. False lock filter for pulsed radar altimeters
US8532207B2 (en) 2011-05-27 2013-09-10 Honeywell International Inc. Methods and systems for distinguishing a signal of interest from interference signals
US8866667B2 (en) 2012-02-22 2014-10-21 Honeywell International Inc. High sensitivity single antenna FMCW radar
US8974117B2 (en) * 2012-04-04 2015-03-10 Honeywell International Inc. Pulse width modulation output digital temperature sensor device
US9660605B2 (en) 2014-06-12 2017-05-23 Honeywell International Inc. Variable delay line using variable capacitors in a maximally flat time delay filter
US10018716B2 (en) 2014-06-26 2018-07-10 Honeywell International Inc. Systems and methods for calibration and optimization of frequency modulated continuous wave radar altimeters using adjustable self-interference cancellation
CN105445710B (en) * 2015-11-26 2017-07-28 西北工业大学 Stealthy radar low probability of intercept performance estimating method
US10698079B2 (en) 2016-04-01 2020-06-30 Intel IP Corporation Method and apparatus for proximity radar in phased array communications
EP3428679B1 (en) * 2017-07-11 2021-11-17 Nxp B.V. Radar system
GB2570279A (en) * 2017-10-31 2019-07-24 Caterpillar Sarl A radar system for detecting profiles of objects, particularly in a vicinity of a machine work tool
US10782706B2 (en) * 2018-01-29 2020-09-22 Bae Systems Information And Electronic Systems Integration Inc. Aircraft derived spread spectrum landing system
CN112379355B (en) * 2020-11-27 2023-07-04 深圳奥锐达科技有限公司 Calibration method, calibration device, terminal equipment and readable storage medium

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Non-Patent Citations (1)

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Also Published As

Publication number Publication date
EP1290470B1 (en) 2008-04-09
ATE391931T1 (en) 2008-04-15
US6407697B1 (en) 2002-06-18
WO2001096901A2 (en) 2001-12-20
DE60133547D1 (en) 2008-05-21
JP2004503788A (en) 2004-02-05
CA2412907A1 (en) 2001-12-20
EP1290470A2 (en) 2003-03-12

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