WO2005031386A3 - Radar anti-fade systems and methods - Google Patents

Radar anti-fade systems and methods Download PDF

Info

Publication number
WO2005031386A3
WO2005031386A3 PCT/US2004/018098 US2004018098W WO2005031386A3 WO 2005031386 A3 WO2005031386 A3 WO 2005031386A3 US 2004018098 W US2004018098 W US 2004018098W WO 2005031386 A3 WO2005031386 A3 WO 2005031386A3
Authority
WO
WIPO (PCT)
Prior art keywords
radar
fade
systems
methods
altimeter
Prior art date
Application number
PCT/US2004/018098
Other languages
French (fr)
Other versions
WO2005031386A2 (en
Inventor
James R Hager
Jordan Lavell
Original Assignee
Honeywell Int Inc
James R Hager
Jordan Lavell
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, James R Hager, Jordan Lavell filed Critical Honeywell Int Inc
Priority to DE602004005453T priority Critical patent/DE602004005453T2/en
Priority to JP2006533598A priority patent/JP2007500854A/en
Priority to CA002527725A priority patent/CA2527725A1/en
Priority to EP04809434A priority patent/EP1631834B1/en
Publication of WO2005031386A2 publication Critical patent/WO2005031386A2/en
Publication of WO2005031386A3 publication Critical patent/WO2005031386A3/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
    • 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
    • G01S13/18—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein range gates are used
    • 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
    • G01S13/22—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using irregular pulse repetition frequency
    • 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
    • G01S13/28—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses
    • G01S13/284—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses using coded pulses
    • G01S13/288—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses using coded pulses phase modulated
    • 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

Abstract

A method for suppressing ground return radar fading in a radar altimeter (10) is described. The method includes providing a radar gate width which corresponds to an area (140) that is smaller than an antenna illumination area being impinged by transmissions of the radar altimeter, dithering the radar gate viewing area (102) within the antenna illumination area being impinged by transmissions of the radar altimeter, and taking radar return samples with the radar altimeter.
PCT/US2004/018098 2003-06-11 2004-06-08 Radar anti-fade systems and methods WO2005031386A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE602004005453T DE602004005453T2 (en) 2003-06-11 2004-06-08 RADAR ANTIQUE SYSTEMS AND METHODS
JP2006533598A JP2007500854A (en) 2003-06-11 2004-06-08 Radar / fading prevention system and method
CA002527725A CA2527725A1 (en) 2003-06-11 2004-06-08 Radar anti-fade systems and methods
EP04809434A EP1631834B1 (en) 2003-06-11 2004-06-08 Radar anti-fade systems and methods

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/458,943 US6731234B1 (en) 2003-06-11 2003-06-11 Radar anti-fade systems and methods
US10/458,943 2003-06-11

Publications (2)

Publication Number Publication Date
WO2005031386A2 WO2005031386A2 (en) 2005-04-07
WO2005031386A3 true WO2005031386A3 (en) 2005-06-02

Family

ID=32176813

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/018098 WO2005031386A2 (en) 2003-06-11 2004-06-08 Radar anti-fade systems and methods

Country Status (6)

Country Link
US (1) US6731234B1 (en)
EP (1) EP1631834B1 (en)
JP (1) JP2007500854A (en)
CA (1) CA2527725A1 (en)
DE (1) DE602004005453T2 (en)
WO (1) WO2005031386A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7274323B2 (en) * 2003-12-10 2007-09-25 Honeywell International Inc. Remote phase synchronization using a low-bandwidth timing referencer
US7248208B2 (en) * 2004-06-10 2007-07-24 Honeywell International Inc. Methods and systems for maintaining a position during hovering operations
US7629918B2 (en) * 2005-12-15 2009-12-08 Raytheon Company Multifunctional radio frequency directed energy system
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
US9053630B2 (en) * 2010-02-17 2015-06-09 The Boeing Company Methods and systems for depicting a data driven minimum safe altitude
KR101336015B1 (en) * 2012-06-18 2013-12-03 (주)뮤트로닉스 Radio altimeter
IL231163A (en) * 2014-02-26 2016-05-31 Elta Systems Ltd System and method for enhancing dynamic range of a beamforming multi-channel digital receiver
US10224627B2 (en) * 2015-12-11 2019-03-05 Anokiwave, Inc. Electronically scanned antenna arrays with reconfigurable performance

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654682A2 (en) * 1993-11-18 1995-05-24 Kabushiki Kaisha TOPCON Light-wave distance meter based on light pulses
US5719582A (en) * 1994-10-21 1998-02-17 Honeywell Inc. Software/hardware digital signal processing (DSP) altimeter
US6407697B1 (en) * 2000-06-15 2002-06-18 Honeywell International Inc. Low probability of intercept coherent radar altimeter

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US4029271A (en) 1976-04-07 1977-06-14 United Technologies Corporation Automatic approach to hover system
US4241346A (en) * 1979-07-11 1980-12-23 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Pulse radar altimeters
US4429310A (en) * 1981-04-22 1984-01-31 Sperry Corporation Random binary waveform encoded ranging apparatus
US4568938A (en) * 1981-12-14 1986-02-04 Rockwell International Corporation Radar altimeter nearest return tracking
US4584646A (en) 1983-06-29 1986-04-22 Harris Corporation System for correlation and recognition of terrain elevation
US4959654A (en) * 1987-04-20 1990-09-25 Honeywell Inc. Digitally generated two carrier phase coded signal source
GB2307809B (en) * 1987-06-10 1998-01-07 Gec Avionics Continous wave radar altimeter
US4801110A (en) 1987-12-21 1989-01-31 Honeywell Inc. Approach to hover control system for helicopters
US5014063A (en) * 1990-01-03 1991-05-07 Canadian Marconi Company Integrated altimeter and doppler velocity sensor arrangement
US5195039A (en) 1990-05-03 1993-03-16 United Technologies Corporation Hover position hold system for rotary winged aircraft
US5150125A (en) * 1990-12-24 1992-09-22 Honeywell Inc. High Doppler rate, high altitude capability coherent pulse Doppler radar altimeter
US5774091A (en) * 1993-04-12 1998-06-30 The Regents Of The University Of California Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities
CA2120077A1 (en) * 1993-06-17 1994-12-18 Louis Labreche System and method for modulating a carrier frequency
US6494093B2 (en) * 2000-05-24 2002-12-17 American Gnc Corporation Method of measuring motion
US6522992B1 (en) * 2000-05-24 2003-02-18 American Gnc Corporation Core inertial measurement unit
US6906641B2 (en) 2000-05-26 2005-06-14 Honeywell International Inc. Apparatus, method and computer program product for helicopter enhanced ground proximity warning system
US6583733B2 (en) 2000-05-26 2003-06-24 Honeywell International Inc. Apparatus, method and computer program product for helicopter ground proximity warning system
JP2003137192A (en) 2001-10-31 2003-05-14 Mitsubishi Heavy Ind Ltd Vertical taking-off/landing craft

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654682A2 (en) * 1993-11-18 1995-05-24 Kabushiki Kaisha TOPCON Light-wave distance meter based on light pulses
US5719582A (en) * 1994-10-21 1998-02-17 Honeywell Inc. Software/hardware digital signal processing (DSP) altimeter
US6407697B1 (en) * 2000-06-15 2002-06-18 Honeywell International Inc. Low probability of intercept coherent radar altimeter

Also Published As

Publication number Publication date
CA2527725A1 (en) 2005-04-07
DE602004005453T2 (en) 2007-12-06
EP1631834A2 (en) 2006-03-08
EP1631834B1 (en) 2007-03-21
DE602004005453D1 (en) 2007-05-03
US6731234B1 (en) 2004-05-04
JP2007500854A (en) 2007-01-18
WO2005031386A2 (en) 2005-04-07

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