ES2049800T3 - Enfoque automatico discreto para formacion de imagenes de radar de apertura sintetica con resolucion ultra alta. - Google Patents

Enfoque automatico discreto para formacion de imagenes de radar de apertura sintetica con resolucion ultra alta.

Info

Publication number
ES2049800T3
ES2049800T3 ES89123506T ES89123506T ES2049800T3 ES 2049800 T3 ES2049800 T3 ES 2049800T3 ES 89123506 T ES89123506 T ES 89123506T ES 89123506 T ES89123506 T ES 89123506T ES 2049800 T3 ES2049800 T3 ES 2049800T3
Authority
ES
Spain
Prior art keywords
phase
formation
high resolution
ultra high
synthetic opening
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 - Lifetime
Application number
ES89123506T
Other languages
English (en)
Inventor
Yoji G Niho
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.)
Raytheon Co
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
Application granted granted Critical
Publication of ES2049800T3 publication Critical patent/ES2049800T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G01S13/9019—Auto-focussing of the SAR signals

Landscapes

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

Abstract

EL INVENTO PROPORCIONA UN FOCO MEJORADO PARA LA FASE DE CORRECCIONES DE LAS IMAGENES DE UN RADAR DE APERTURA SINTETICA, MEDIANTE LA OPERACION SOBRE EL RANGO BIN DE UN DETERMINADO OBJETIVO AISLADO. SE GENERA UNA SEÑAL DE FASE DE CORREACCION OBTENIENDO, EN PRIMER LUGAR, UNA SEÑAL DE RADAR, SIN INTERFERENCIAS, A PARTIR DEL OBJETIVO SELECCIONADO A TRAVES DE LA OPERACION DE FILTRADO DE LA BANDA DE PASO 922) Y ENTONCES SE EXTRAE UNA FASE RESIDUAL NO LINEAL (24) A PARTIR DE LOS DATOS FILTRADOS DE LA BANDA DE PASO CON UN GENERADOR ARCO TANGENTE. LA FASE RESIDUAL DERIVADA DEL GENERADOR ARCO TANGENTE ES ENTONCES APLICADA AL RANGO DE DATOS SAR COMPRIMIDO (14) COMO UNA FASE DE CORRECCION DE SEÑAL.
ES89123506T 1988-12-22 1989-12-20 Enfoque automatico discreto para formacion de imagenes de radar de apertura sintetica con resolucion ultra alta. Expired - Lifetime ES2049800T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/288,741 US5043734A (en) 1988-12-22 1988-12-22 Discrete autofocus for ultra-high resolution synthetic aperture radar

Publications (1)

Publication Number Publication Date
ES2049800T3 true ES2049800T3 (es) 1994-05-01

Family

ID=23108448

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89123506T Expired - Lifetime ES2049800T3 (es) 1988-12-22 1989-12-20 Enfoque automatico discreto para formacion de imagenes de radar de apertura sintetica con resolucion ultra alta.

Country Status (8)

Country Link
US (1) US5043734A (es)
EP (1) EP0378832B1 (es)
JP (1) JPH02245687A (es)
AU (1) AU620952B2 (es)
CA (1) CA2003469C (es)
DE (1) DE68913499T2 (es)
ES (1) ES2049800T3 (es)
IL (1) IL92768A0 (es)

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US5184134A (en) * 1991-11-27 1993-02-02 Hughes Aircraft Company Fast phase difference autofocus
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US5248976A (en) * 1991-11-27 1993-09-28 Hughes Aircraft Company Multiple discrete autofocus
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US7173981B1 (en) 2001-04-27 2007-02-06 The Directv Group, Inc. Dual layer signal processing in a layered modulation digital signal system
US7512189B2 (en) * 2001-04-27 2009-03-31 The Directv Group, Inc. Lower complexity layered modulation signal processor
US7423987B2 (en) 2001-04-27 2008-09-09 The Directv Group, Inc. Feeder link configurations to support layered modulation for digital signals
US7583728B2 (en) 2002-10-25 2009-09-01 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7822154B2 (en) 2001-04-27 2010-10-26 The Directv Group, Inc. Signal, interference and noise power measurement
US7502430B2 (en) 2001-04-27 2009-03-10 The Directv Group, Inc. Coherent averaging for measuring traveling wave tube amplifier nonlinearity
US8005035B2 (en) 2001-04-27 2011-08-23 The Directv Group, Inc. Online output multiplexer filter measurement
US7639759B2 (en) 2001-04-27 2009-12-29 The Directv Group, Inc. Carrier to noise ratio estimations from a received signal
US7245671B1 (en) 2001-04-27 2007-07-17 The Directv Group, Inc. Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers
US7209524B2 (en) * 2001-04-27 2007-04-24 The Directv Group, Inc. Layered modulation for digital signals
US7471735B2 (en) 2001-04-27 2008-12-30 The Directv Group, Inc. Maximizing power and spectral efficiencies for layered and conventional modulations
US7778365B2 (en) * 2001-04-27 2010-08-17 The Directv Group, Inc. Satellite TWTA on-line non-linearity measurement
US7483505B2 (en) 2001-04-27 2009-01-27 The Directv Group, Inc. Unblind equalizer architecture for digital communication systems
GB0116310D0 (en) * 2001-07-04 2001-08-29 New Transducers Ltd Contact sensitive device
JP4597444B2 (ja) * 2001-09-19 2010-12-15 三菱電機株式会社 合成開口レーダ装置および合成開口レーダ装置における像再生方法
JP3852569B2 (ja) * 2001-10-25 2006-11-29 三菱電機株式会社 レーダ信号処理装置および方法
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ES2604453T3 (es) 2002-07-03 2017-03-07 The Directv Group, Inc. Método y aparato para modulación en capas
US7474710B2 (en) 2002-10-25 2009-01-06 The Directv Group, Inc. Amplitude and phase matching for layered modulation reception
US7529312B2 (en) 2002-10-25 2009-05-05 The Directv Group, Inc. Layered modulation for terrestrial ATSC applications
US7463676B2 (en) * 2002-10-25 2008-12-09 The Directv Group, Inc. On-line phase noise measurement for layered modulation
US7502429B2 (en) 2003-10-10 2009-03-10 The Directv Group, Inc. Equalization for traveling wave tube amplifier nonlinearity measurements
US7126524B2 (en) * 2004-08-04 2006-10-24 Raytheon Company Motion compensation for convolutional SAR algorithms
EP1820045B1 (en) * 2004-11-26 2008-09-17 Saab AB Antenna back-lobe rejection
US7064702B1 (en) * 2005-03-01 2006-06-20 The Boeing Company System, method and computer program product for reducing quadratic phase errors in synthetic aperture radar signals
US7391357B1 (en) * 2005-03-25 2008-06-24 Sandia Corporation Correction of motion measurement errors beyond the range resolution of a synthetic aperture radar
US7522097B2 (en) * 2005-12-08 2009-04-21 The Boeing Company Radar platform angular motion compensation
US7307580B2 (en) * 2006-01-17 2007-12-11 Raytheon Company Non-statistical method for compressing and decompressing complex SAR data
WO2008021374A2 (en) * 2006-08-15 2008-02-21 General Dynamics Advanced Information Systems, Inc Methods for two-dimensional autofocus in high resolution radar systems
US20080297405A1 (en) * 2007-04-06 2008-12-04 Morrison Jr Robert L Synthetic Aperture focusing techniques
US12250007B2 (en) 2015-08-19 2025-03-11 Texas Instruments Incorporated Method and system for compression of radar signals
WO2017031149A1 (en) * 2015-08-19 2017-02-23 Texas Instruments Incorporated Method and system for compression of radar signals
US10209356B2 (en) 2015-11-24 2019-02-19 Mitsubishi Electric Research Laboratories, Inc. Method and system for autofocus radar imaging
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US11209524B2 (en) * 2019-09-30 2021-12-28 Veoneer Us, Inc. Detection system and method for characterizing targets
CN111880180B (zh) * 2020-07-03 2023-05-26 西安电子科技大学 一种高分辨运动舰船sar成像的自聚焦方法
JP2022085374A (ja) * 2020-11-27 2022-06-08 京セラ株式会社 電子機器、電子機器の制御方法、及びプログラム
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Also Published As

Publication number Publication date
EP0378832B1 (en) 1994-03-02
IL92768A0 (en) 1990-09-17
EP0378832A2 (en) 1990-07-25
EP0378832A3 (en) 1990-08-01
US5043734A (en) 1991-08-27
CA2003469A1 (en) 1990-06-22
DE68913499T2 (de) 1994-06-09
DE68913499D1 (de) 1994-04-07
JPH02245687A (ja) 1990-10-01
AU620952B2 (en) 1992-02-27
AU4691089A (en) 1990-06-28
CA2003469C (en) 1994-11-08

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