CA2056061C - Digital generation of synthetic aperture radar images - Google Patents

Digital generation of synthetic aperture radar images

Info

Publication number
CA2056061C
CA2056061C CA002056061A CA2056061A CA2056061C CA 2056061 C CA2056061 C CA 2056061C CA 002056061 A CA002056061 A CA 002056061A CA 2056061 A CA2056061 A CA 2056061A CA 2056061 C CA2056061 C CA 2056061C
Authority
CA
Canada
Prior art keywords
unit
subapertures
azimuth
frequency
signal
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CA002056061A
Other languages
English (en)
French (fr)
Other versions
CA2056061A1 (en
Inventor
Albert Moreira
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsches Zentrum fuer Luft und Raumfahrt eV
Original Assignee
Deutsches Zentrum fuer Luft und Raumfahrt eV
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 Deutsches Zentrum fuer Luft und Raumfahrt eV filed Critical Deutsches Zentrum fuer Luft und Raumfahrt eV
Publication of CA2056061A1 publication Critical patent/CA2056061A1/en
Application granted granted Critical
Publication of CA2056061C publication Critical patent/CA2056061C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
    • G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
    • G01S13/9004—SAR image acquisition techniques
    • G01S13/9011—SAR image acquisition techniques with frequency domain processing of the SAR signals in azimuth

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
CA002056061A 1990-11-27 1991-11-22 Digital generation of synthetic aperture radar images Expired - Fee Related CA2056061C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4037725.3 1990-11-27
DE4037725A DE4037725A1 (de) 1990-11-27 1990-11-27 Verfahren zur digitalen generierung von sar-bildern und einrichtung zu dessen durchfuehrung

Publications (2)

Publication Number Publication Date
CA2056061A1 CA2056061A1 (en) 1992-05-28
CA2056061C true CA2056061C (en) 1995-02-07

Family

ID=6419020

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002056061A Expired - Fee Related CA2056061C (en) 1990-11-27 1991-11-22 Digital generation of synthetic aperture radar images

Country Status (4)

Country Link
US (1) US5191344A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0492132B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA2056061C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE4037725A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4323511C1 (de) * 1993-07-14 1995-01-26 Deutsche Aerospace Radargerät zur Hinderniswarnung
JP2757845B2 (ja) * 1995-12-26 1998-05-25 日本電気株式会社 合成開口レーダ装置
US5614907A (en) * 1996-03-14 1997-03-25 Daimler-Benz Aerospace Ag All weather visual system for helicopters
US5898399A (en) * 1996-05-10 1999-04-27 Erim International, Inc. Subchirp processing method
US5734347A (en) * 1996-06-10 1998-03-31 Mceligot; E. Lee Digital holographic radar
FR2763398B1 (fr) * 1997-05-13 1999-08-06 Thomson Csf Procede de traitement du signal de reception d'un radar sar de type deramp
DE102006022814A1 (de) * 2006-05-13 2007-11-15 Deutsches Zentrum für Luft- und Raumfahrt e.V. Hochauflösendes Synthetik-Apertur-Seitenansicht-Radarsystem mittels Digital Beamforming
US7777666B2 (en) * 2008-06-04 2010-08-17 Honeywell International Inc. Celestial body mapping systems and methods
FR2962811B1 (fr) * 2010-07-19 2013-09-27 Thales Sa Dispositif d'antenne a ouverture synthetique d'emission de signaux d'un systeme de navigation par satellites comprenant une porteuse et des moyens de determination de sa trajectoire
WO2012120137A1 (en) * 2011-03-10 2012-09-13 Astrium Limited Sar data processing
CN103323820B (zh) * 2013-06-19 2015-07-15 北京理工大学 一种抑制频率步进sar一维距离图像栅瓣的方法
DE102014104273B4 (de) * 2014-03-26 2024-08-14 Symeo Gmbh Verfahren in einem Radarsystem, Radarsystem bzw. Vorrichtung eines Radarsystems
EP3021135B1 (de) * 2014-11-14 2018-08-15 Airbus Defence and Space GmbH Reduktion von Empfangsdaten eines Radars, insbesondere eines synthetischen Aperturradars
WO2017118621A1 (de) 2016-01-04 2017-07-13 Symeo Gmbh Verfahren und system zur verringerung von störungen durch phasenrauschen in einem radarsystem
DE102017110063A1 (de) * 2017-03-02 2018-09-06 Friedrich-Alexander-Universität Erlangen-Nürnberg Verfahren und Vorrichtung zur Umfelderfassung
FR3071067B1 (fr) * 2017-09-14 2020-04-03 Thales Procede de compensation de l'effet du depointage d'antenne dans une image sar et radar mettant en oeuvre un tel procede
US11436705B2 (en) * 2017-10-02 2022-09-06 Nec Corporation Radar image processing device, radar image processing method, and radar image processing program
US20210011151A1 (en) * 2019-07-10 2021-01-14 GM Global Technology Operations LLC Radar range ambiguity resolution using multi-rate sampling
RU2767317C1 (ru) * 2021-04-29 2022-03-17 Федеральное государственное казенное военное образовательное учреждение высшего образования "Военный учебно-научный центр Военно-воздушных сил "Военно-воздушная академия имени профессора Н.Е. Жуковского и Ю.А. Гагарина" (г. Воронеж) Министерства обороны Российской Федерации Фильтр сигнала с v-образной частотной модуляцией
CN113640801B (zh) * 2021-09-17 2023-07-28 内蒙古工业大学 用于地基sar低旁瓣成像模式的方法、装置及存储介质

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
US4227194A (en) * 1971-01-04 1980-10-07 Hughes Aircraft Company Synthetic array processor
US4034370A (en) * 1972-08-23 1977-07-05 Westinghouse Electric Corporation Second order motion compensator for high resolution radar
US4292634A (en) * 1978-12-15 1981-09-29 Nasa Real-time multiple-look synthetic aperture radar processor for spacecraft applications
US4471357A (en) * 1981-10-26 1984-09-11 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Pipelined digital SAR azimuth correlator using hybrid FFT/transversal filter
DE3279581D1 (en) * 1981-12-28 1989-05-03 Nec Corp Synthetic aperture radar image processing system
US4564839A (en) * 1982-09-14 1986-01-14 The United States Of America As Represented By The Secretary Of The Air Force Feature referenced error correction apparatus
US4771287A (en) * 1983-06-23 1988-09-13 Westinghouse Electric Corp. Method of correcting for errors in radar imaging
USH741H (en) * 1984-07-12 1990-02-06 The United States Of America As Represented By The Secretary Of The Air Force Discrete complex correlation device for obtaining subpixel accuracy
US4768156A (en) * 1986-05-06 1988-08-30 The United States Of America As Represented By The Secretary Of The Navy Imaging system
US5043734A (en) * 1988-12-22 1991-08-27 Hughes Aircraft Company Discrete autofocus for ultra-high resolution synthetic aperture radar
US4924229A (en) * 1989-09-14 1990-05-08 The United States Of America As Represented By The United States Department Of Energy Phase correction system for automatic focusing of synthetic aperture radar
US4999635A (en) * 1990-03-29 1991-03-12 Hughes Aircraft Company Phase difference auto focusing for synthetic aperture radar imaging
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
US5021789A (en) * 1990-07-02 1991-06-04 The United States Of America As Represented By The Secretary Of The Air Force Real-time high resolution autofocus system in digital radar signal processors
US5113194A (en) * 1990-08-29 1992-05-12 Hughes Aircraft Company Acceleration compensation by matched filtering

Also Published As

Publication number Publication date
CA2056061A1 (en) 1992-05-28
DE4037725A1 (de) 1992-06-11
DE4037725C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-04-08
EP0492132A1 (de) 1992-07-01
EP0492132B1 (de) 1996-03-06
US5191344A (en) 1993-03-02

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