JPS57179769A - Correcting system for picture distortion of synthetic aperture-face radar - Google Patents

Correcting system for picture distortion of synthetic aperture-face radar

Info

Publication number
JPS57179769A
JPS57179769A JP56065942A JP6594281A JPS57179769A JP S57179769 A JPS57179769 A JP S57179769A JP 56065942 A JP56065942 A JP 56065942A JP 6594281 A JP6594281 A JP 6594281A JP S57179769 A JPS57179769 A JP S57179769A
Authority
JP
Japan
Prior art keywords
picture
data
function
region
sar
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.)
Pending
Application number
JP56065942A
Other languages
Japanese (ja)
Inventor
Yorio Sawada
Masatsugu Kidode
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56065942A priority Critical patent/JPS57179769A/en
Publication of JPS57179769A publication Critical patent/JPS57179769A/en
Pending 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

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)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To realize a simple and quick correction without lowering the picture distortion, by obtaining a picture data for each local region to regard the system as a linear form and then obtaining a complex conjugation of the secondary Fourier convertion as a correction function for the answer function of a key point to carry out the correction. CONSTITUTION:The radar hologram data, i.e., an SAR (Synthetic Aperture-face Radar) picture is caught for each local region D which is fractionated in terms of the distance and direction. The SAR picture is regarded to be in a linear system in the region D, and the answer function is obtained from an annotation data using the time as a parameter for the key point of the SAR picture. The complex conjugation obtained by giving the secondary Fourier conversion to the answer function is used as a compensation function, and at the same time the secondary Fourier conversion is given to the hologram data in the region D. Then this hologram data is multiplied by the compensation function in a frequency region. The adverse secondary Fourier conversion is given to the result of multiplication and this result is delivered in the form of a data that has been corrected for picture distortion.
JP56065942A 1981-04-30 1981-04-30 Correcting system for picture distortion of synthetic aperture-face radar Pending JPS57179769A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56065942A JPS57179769A (en) 1981-04-30 1981-04-30 Correcting system for picture distortion of synthetic aperture-face radar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56065942A JPS57179769A (en) 1981-04-30 1981-04-30 Correcting system for picture distortion of synthetic aperture-face radar

Publications (1)

Publication Number Publication Date
JPS57179769A true JPS57179769A (en) 1982-11-05

Family

ID=13301521

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56065942A Pending JPS57179769A (en) 1981-04-30 1981-04-30 Correcting system for picture distortion of synthetic aperture-face radar

Country Status (1)

Country Link
JP (1) JPS57179769A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6020162A (en) * 1983-07-15 1985-02-01 Hitachi Ltd Reproducing processing system of synthetic-aperture radar picture
JPS61138189A (en) * 1984-12-10 1986-06-25 Nec Corp Synthetic aperture radar image processing device
JPS61194379A (en) * 1985-02-25 1986-08-28 Nec Corp Synthetic aperture radar image processing apparatus
JPS61241682A (en) * 1985-04-19 1986-10-27 Mitsubishi Electric Corp Synthetic aperture radar equipment
JPS6280767A (en) * 1985-10-04 1987-04-14 Hitachi Ltd Reproducing processing system for synthetic aperture radar image
JP2011169869A (en) * 2010-02-22 2011-09-01 Mitsubishi Electric Corp Apparatus for processing radar signal

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6020162A (en) * 1983-07-15 1985-02-01 Hitachi Ltd Reproducing processing system of synthetic-aperture radar picture
JPH0456268B2 (en) * 1983-07-15 1992-09-07 Hitachi Ltd
JPS61138189A (en) * 1984-12-10 1986-06-25 Nec Corp Synthetic aperture radar image processing device
JPS61194379A (en) * 1985-02-25 1986-08-28 Nec Corp Synthetic aperture radar image processing apparatus
JPH0543071B2 (en) * 1985-02-25 1993-06-30 Nippon Electric Co
JPS61241682A (en) * 1985-04-19 1986-10-27 Mitsubishi Electric Corp Synthetic aperture radar equipment
JPH054037B2 (en) * 1985-04-19 1993-01-19 Mitsubishi Electric Corp
JPS6280767A (en) * 1985-10-04 1987-04-14 Hitachi Ltd Reproducing processing system for synthetic aperture radar image
JP2011169869A (en) * 2010-02-22 2011-09-01 Mitsubishi Electric Corp Apparatus for processing radar signal

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