Bistatic/multistatic radar image PS (permanent scatterer) point associating method based on sliding scattering center

A technology of sliding scattering center and bistatic radar, which is applied in the direction of radio wave reflection/re-radiation, utilization of re-radiation, measurement devices, etc., and can solve the problem of severe decorrelation between radar images
CN104833971AActive Publication Date: 2015-08-12BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2015-08-12

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Abstract

The invention discloses a bistatic / multistatic radar image PS (permanent scatterer) point associating method based on a sliding scattering center, which accurately registers multiple SAR images viewed from different angles, and belongs to the field of bistatic / multistatic synthetic aperture radars. The method comprises: obtaining an approximate target outline scattering function by performing parabolic fitting on a PS point target outline function in a bistatic image; obtaining a homonymy point in a monostatic radar image by performing moving window search on the monostatic radar image; and finally, registering the monostatic radar image according to the homonymy point obtained through the search. The method fully utilizes the characteristics of the sliding scattering PS point target, solves a puzzle that a conventional PS point registering method is just capable of accurately registering images observed from a single angle, and has significant meaning to multi-angle radar image fusion and interference processing.
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Description

technical field

[0001] The invention relates to a bistatic / multistatic radar image PS point correlation method based on a sliding scattering center, and belongs to the bistatic / multistatic synthetic aperture radar technical field. Background technique

[0002] Synthetic Aperture Radar (SAR) is an all-weather, all-weather high-resolution microwave remote sensing imaging radar that can be installed on aircraft, satellites, missiles and other flying platforms. Since its invention in the 1950s, it has been widely used in many fields, such as disaster control, vegetation analysis, microwave remote sensing and other fields.

[0003] Bistatic / Multistatic SAR (Bistatic / Multistatic SAR) is an emerging radar system, which is characterized by the separation of the transmitting platform and the receiving platform in space. The radar system has unique advantages in many aspects: some radars are used as transmitters, and the rest are used as receivers to form a radar network that can obt...

Claims

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