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WO1987007389A3 - Radar adaptatif pour la reduction d'echos parasites du son - Google Patents

Radar adaptatif pour la reduction d'echos parasites du son Download PDF

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Publication number
WO1987007389A3
WO1987007389A3 PCT/US1987/001156 US8701156W WO8707389A3 WO 1987007389 A3 WO1987007389 A3 WO 1987007389A3 US 8701156 W US8701156 W US 8701156W WO 8707389 A3 WO8707389 A3 WO 8707389A3
Authority
WO
WIPO (PCT)
Prior art keywords
radar
clutter
signals
reducing background
polarization
Prior art date
Application number
PCT/US1987/001156
Other languages
English (en)
Other versions
WO1987007389A2 (fr
Inventor
Donald R Wells
Original Assignee
Hughes Aircraft Co
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 Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of WO1987007389A2 publication Critical patent/WO1987007389A2/fr
Publication of WO1987007389A3 publication Critical patent/WO1987007389A3/fr

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
    • G01S7/024—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using polarisation effects
    • G01S7/026—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using polarisation effects involving the transmission of elliptically or circularly polarised waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

Le radar adaptatif (10) permet de réduire sensiblement les échos parasites de fond, en particulier les échos parasites relativement constants dans le temps, tels que le retour de mer, et spécialement à de faibles angles d'effleurement du radar. L'appareil de radar (10) comprend une antenne de transmission (12) ayant des éléments de transmission (26, 28) orientés horizontalement et verticalement et une commande de phase relative entre les deux, et une antenne de réception (14) ayant également des éléments de réception (30, 32) orientés horizontalement et verticalement avec aussi une détection de phase relative et déphasage entre les deux. Un générateur de signaux radar (16) pouvant être commandé envoie des signaux à l'antenne de transmission (12) et un processeur de signaux (18) pouvant être commandé traite les signaux de retour provenant de l'antenne de réception (14). Des moyens (20) sont prévus pour déterminer, à partir des signaux test de retour, une polarisation nulle moyenne de fond pour plusieurs cellules azimuthales et de portée du radar ainsi que pour fournir des signaux de commande de polarisation nulle Ho, Vo et oo, au générateur de signaux (16) et au processeur de signaux de retour (18) pour faire fonctionner le radar à un état de polarisation qui est le même que la polarisation nulle moyenne des échos parasites. Un procédé correspondant réduit les échos parasites de fond, spécialement le retour de mer relativement constant dans le temps, dans un radar à faible angle d'effleurement.
PCT/US1987/001156 1986-05-27 1987-05-13 Radar adaptatif pour la reduction d'echos parasites du son WO1987007389A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US867,866 1986-05-27
US06/867,866 US4766435A (en) 1986-05-27 1986-05-27 Adaptive radar for reducing background clutter

Publications (2)

Publication Number Publication Date
WO1987007389A2 WO1987007389A2 (fr) 1987-12-03
WO1987007389A3 true WO1987007389A3 (fr) 1988-01-28

Family

ID=25350624

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1987/001156 WO1987007389A2 (fr) 1986-05-27 1987-05-13 Radar adaptatif pour la reduction d'echos parasites du son

Country Status (4)

Country Link
US (1) US4766435A (fr)
EP (1) EP0344147A1 (fr)
JP (1) JPS63503405A (fr)
WO (1) WO1987007389A2 (fr)

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FR2609224B1 (fr) * 1986-12-30 1989-04-07 Thomson Csf Dispositif et procede de transmission et/ou d'acquisition des donnees utilisant deux polarisations croisees d'une onde electromagnetique et dispositif d'enregistrement magnetique
JPH065273B2 (ja) * 1987-09-17 1994-01-19 沖電気工業株式会社 海面反射信号抑圧レーダ
DE3907788C2 (de) * 1989-03-10 1998-05-20 Daimler Benz Aerospace Ag Radarsignalverarbeitungsverfahren
CA1310709C (fr) * 1989-06-26 1992-11-24 Simon Haykin Eliminateur de brouillage adaptatif
US4937582A (en) * 1989-07-19 1990-06-26 Itt Corporation Polarization adaptive active aperture system
US5036331A (en) * 1989-09-18 1991-07-30 The Boeing Company Adaptive polarization combiner
US5057843A (en) * 1990-06-25 1991-10-15 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method for providing a polarization filter for processing synthetic aperture radar image data
GB2265515B (en) * 1991-04-26 1995-02-01 Thorn Emi Electronics Ltd Method of enhancing the target:clutter ratio in a radar return
DE4123298C1 (en) * 1991-07-13 1992-12-03 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De Direction finder with installation factors computer for locality compensation - has interface with associated DA converter for test program giving range to aircraft or missile
DE4221234C2 (de) * 1992-06-27 2003-04-03 Daimler Chrysler Ag Radarsignalverarbeitungsverfahren
US5546084A (en) * 1992-07-17 1996-08-13 Trw Inc. Synthetic aperture radar clutter reduction system
JPH075247A (ja) * 1993-06-14 1995-01-10 Nec Corp アダプティブ偏波制御レーダ
US5686919A (en) * 1995-06-06 1997-11-11 Jordan; James R. Process for generating wind profiler data free of fixed ground clutter contamination
US5805106A (en) * 1997-01-03 1998-09-08 Trw Inc. Dual polarization wave clutter reduction
IL144431A0 (en) * 1999-02-17 2002-05-23 Raytheon Co Mprf interpulse phase modulation for maximizing doppler clear space
US6049302A (en) * 1999-05-04 2000-04-11 Boeing North American Pulsed doppler radar system with small intermediate frequency filters
JP3659577B2 (ja) * 2000-12-12 2005-06-15 三菱電機株式会社 クラッタ抑圧装置およびクラッタ抑圧方法
US6910381B2 (en) * 2002-05-31 2005-06-28 Mykrolis Corporation System and method of operation of an embedded system for a digital capacitance diaphragm gauge
US20060044183A1 (en) * 2004-08-30 2006-03-02 Wells Donald R Low frequency radar antenna
US7183969B2 (en) * 2004-12-22 2007-02-27 Raytheon Company System and technique for calibrating radar arrays
JP5009282B2 (ja) * 2005-04-04 2012-08-22 レイセオン カンパニー 複数のレーダをコヒーレントに組み合わせるシステム及び方法
US7236124B2 (en) * 2005-06-02 2007-06-26 Raytheon Company Radar system and method for reducing clutter in a high-clutter environment
US7683828B2 (en) * 2006-07-12 2010-03-23 Enterprise Electronics Corporation System and method for measuring phase and power variance
US7570202B2 (en) * 2007-05-16 2009-08-04 The Johns Hopkins University Polarimetric selectivity method for suppressing cross-track clutter in sounding radars
EP2284950A1 (fr) 2008-02-07 2011-02-16 Saab Ab Réseau d'antennes à large bande
EP2088449B1 (fr) 2008-02-07 2012-06-06 Saab Ab Suppression de lobes latéraux
US8174435B2 (en) * 2010-06-01 2012-05-08 Raytheon Company Methods and apparatus for non-isotropic sea clutter modeling
EP2641104A4 (fr) * 2010-11-19 2015-01-07 Saab Ab Procédé et système radar pour suppression de brouilleur répéteur et de fouillis
US8456350B2 (en) 2010-12-17 2013-06-04 Raytheon Company Methods and apparatus for sea state measurement via radar sea clutter eccentricity
US8456352B2 (en) 2010-12-17 2013-06-04 Raytheon Company Methods and apparatus for automatic STC from sea state measurement via radar sea clutter eccentricity
US9213088B2 (en) * 2011-05-17 2015-12-15 Navico Holding As Radar clutter suppression system
WO2014098660A1 (fr) * 2012-12-17 2014-06-26 Saab Ab Géoradar d'imagerie
US9348022B1 (en) * 2013-12-16 2016-05-24 Lockheed Martin Corporation Identifying obstacles in a landing zone
DE102016203160A1 (de) * 2016-02-29 2017-08-31 Robert Bosch Gmbh Radarsystem, umfassend eine Antennenanordnung zum Senden und Empfangen elektromagnetischer Strahlung
US10955524B2 (en) 2016-11-22 2021-03-23 Massachusetts Institute Of Technology System and technique for mitigation of clutter in radar
CN109100713B (zh) * 2018-07-06 2022-05-03 电子科技大学 具有杂波抑制功能的协作式微波测量装置、系统及方法
US11002848B2 (en) * 2019-05-15 2021-05-11 The United States Of America As Represented By The Secretary Of The Army Interferometric synthetic aperture radar imaging of subsurface structures
CN110927692A (zh) * 2019-12-11 2020-03-27 南京航空航天大学 海杂波场景下搜索雷达射频隐身工作方式的求解方法
EP4001953A1 (fr) * 2020-11-11 2022-05-25 Aptiv Technologies Limited Système de radar pour véhicule automobile
CN119322326B (zh) * 2024-12-19 2025-03-18 中国人民解放军国防科技大学 基于极化相参滤波的海杂波抑制方法、装置及设备

Citations (7)

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GB1081971A (en) * 1956-05-09 1967-09-06 Ass Elect Ind Improvements in and relating to radar apparatus
US3540045A (en) * 1969-01-10 1970-11-10 Nasa Electromagnetic polarization systems and methods
US3566403A (en) * 1949-03-08 1971-02-23 Raytheon Co Polarized radar detection system
US4053882A (en) * 1976-02-23 1977-10-11 The United States Of America As Represented By The Secretary Of The Air Force Polarization radar method and system
US4323899A (en) * 1980-06-23 1982-04-06 Sperry Corporation Polarization detector
US4329687A (en) * 1979-06-29 1982-05-11 International Standard Electric Corporation Radar radiating polarized signals

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US4041489A (en) * 1974-06-25 1977-08-09 The United States Of America As Represented By The Secretary Of The Navy Sea clutter reduction technique
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Patent Citations (7)

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US3566403A (en) * 1949-03-08 1971-02-23 Raytheon Co Polarized radar detection system
US3025513A (en) * 1955-11-04 1962-03-13 Decca Record Co Ltd Radar apparatus
GB1081971A (en) * 1956-05-09 1967-09-06 Ass Elect Ind Improvements in and relating to radar apparatus
US3540045A (en) * 1969-01-10 1970-11-10 Nasa Electromagnetic polarization systems and methods
US4053882A (en) * 1976-02-23 1977-10-11 The United States Of America As Represented By The Secretary Of The Air Force Polarization radar method and system
US4329687A (en) * 1979-06-29 1982-05-11 International Standard Electric Corporation Radar radiating polarized signals
US4323899A (en) * 1980-06-23 1982-04-06 Sperry Corporation Polarization detector

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IEE Proceedings, Volume 128, part F, No. 5, October 1981, (Old Woking, Surrey, GB), A.J. POELMAN et al.: "Virtual Polarisation Adaption. A Method of Increasing the Detection Capability of a Radar System Through Polarisationvector Processing", pages 261-270 see pages 264-266 cited in the application *
Proceeding of the IEEE, Volume 74, No. 2, February 1986, IEEE, (New York, US), D. GIUILI: "Polarization Diversity in Radars", pages 245-269 see pages 255-257 *

Also Published As

Publication number Publication date
JPS63503405A (ja) 1988-12-08
US4766435A (en) 1988-08-23
EP0344147A1 (fr) 1989-12-06
WO1987007389A2 (fr) 1987-12-03

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