Space pursing synchronization method of airborne bistatic synthetic aperture radar (SAR) beam

A bistatic, beam technology, applied in radio wave measurement systems, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve the problems of inaccurate beam alignment of transceiver antennas, insufficient alignment accuracy, etc.

Active Publication Date: 2014-09-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] In order to solve the problem that the beam alignment of the receiving and transmitting antennas of the airborne bistatic SAR is not accurate enough, the present invention proposes a beam catching up space synchronization method for the receiving station of the airborne bistatic SAR on the basis of the existing method. The premise is that the beams of the receiving and transmitting antennas have already pointed to the target area, that is, the antenna beams of the transmitting and receiving stations have completed preliminary alignment. the alignment

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  • Space pursing synchronization method of airborne bistatic synthetic aperture radar (SAR) beam
  • Space pursing synchronization method of airborne bistatic synthetic aperture radar (SAR) beam
  • Space pursing synchronization method of airborne bistatic synthetic aperture radar (SAR) beam

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Embodiment Construction

[0057] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0058] The present invention mainly adopts the mode of simulation experiment to verify, and the simulation verification platform is Matlab2010. The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0059] From the content description of the invention, the method of the present invention mainly calculates the antenna beam azimuth angle or the antenna beam elevation angle when the antenna beam of the receiving station is aligned with the area covered by the antenna beam of the transmitting station by catching up with the radar transmitting antenna beam. , or calculate the antenna beam azimuth and antenna beam elevation angle at the same time, so that the antenna beam of the receiving station can be accurately aligned with the antenna beam center of the transmittin...

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Abstract

The invention discloses a space synchronization method for beam catching up of airborne bistatic SAR. Specifically, by catching up with the radar transmitting antenna beam, the antenna beam azimuth when the antenna beam of the receiving station is aligned with the area covered by the antenna beam of the transmitting station is accurately calculated. Angle or antenna beam elevation angle, or calculate the antenna beam azimuth angle and antenna beam elevation angle at the same time, so that the antenna beam of the receiving station can be accurately aligned with the antenna beam center of the transmitting station, realizing the airborne bistatic SAR transceiver antenna The precise alignment of the beams completes the spatial synchronization of the bistatic SAR. The method of the invention solves the problem of relatively large errors in the antenna pointing control parameters in the existing method, ensures sufficient overlapping area of ​​the transmitting and receiving antenna beams in the test process, and plays a role in guaranteeing the imaging of the bistatic SAR.

Description

technical field [0001] The invention belongs to the technical field of space synchronization in radar systems, and in particular relates to an airborne bistatic synthetic aperture radar (Synthetic Aperture Radar, SAR) beam chasing space synchronization method. Background technique [0002] Bistatic SAR is a synthetic aperture radar with a new system of receiving and transmitting separately. It has different spatial geometric coordinate relations, anti-jamming performance, concealment, and strong anti-intercept ability. Bistatic SAR includes space-borne bistatic SAR for satellite launch and satellite reception, satellite bistatic SAR for satellite launch and aircraft reception, and airborne bistatic SAR for aircraft launch and aircraft reception. [0003] Due to the separation of transceivers, the airborne bistatic SAR has a new spatial geometry, which brings about the space synchronization problem of the airborne bistatic SAR. Space synchronization requires that the antenna...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01S13/90G01S7/28
Inventor黄钰林罗华李中余杜雨洺樊彦杨建宇
OwnerUNIV OF ELECTRONICS SCI & TECH OF CHINA