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Space time adaptive processing method of constant-acceleration platform based on array element-pulse domain compensation

A technology of space-time self-adaptation and processing method, which is applied in the direction of reflection/re-radiation of radio waves, utilization of re-radiation, measurement devices, etc., to achieve the effect of wide application range, strong practicability and easy operation

Active Publication Date: 2015-05-20
湖南鼎方电子科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

STAP technology is mainly aimed at receiving signals from radar mounted on a moving platform. In the past 30 years, it has been assumed that the platform is in a state of uniform motion. However, the actual motion of the platform is not an ideal uniform motion.

Method used

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  • Space time adaptive processing method of constant-acceleration platform based on array element-pulse domain compensation
  • Space time adaptive processing method of constant-acceleration platform based on array element-pulse domain compensation
  • Space time adaptive processing method of constant-acceleration platform based on array element-pulse domain compensation

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing:

[0021] refer to figure 1 , is a flow chart of the space-time adaptive processing method of the uniform acceleration platform based on element-pulse domain compensation of the present invention. The space-time adaptive processing method of the uniform acceleration platform based on array element-pulse domain compensation includes the following steps:

[0022] Step 1, use the radar set up on the uniformly accelerated motion platform to transmit signals, and use the radar signal receiving array to receive echo data; obtain the echo data matrix r c .

[0023] The specific steps are:

[0024] Utilize the radar that is erected on the uniformly accelerated motion platform to transmit signals, and utilize the radar signal receiving array to receive the echo data. refer to figure 2 , is a schematic diagram of the geometric model when the radar of the present invention works. ...

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Abstract

The invention belongs to the technical field of motion compensation related to STAP (Space Time Adaptive Processing), and particularly relates to a space time adaptive processing method of a constant-acceleration platform based on array element-pulse domain compensation. The space time adaptive processing method comprises the specific steps: obtaining an echo data matrix rc; obtaining a compensating factor Bw; constructing a compensation matrix T by utilizing the compensating factor Bw and a pitching angle corresponding to each distance unit, and obtaining the echo data matrix after compensation, wherein = T; determining an estimate of a covariance matrix by utilizing the echo data matrix after compensation; determining a space time adaptive processing optimal weight vector Wopt by utilizing the estimate of the covariance matrix; performing space time adaptive processing on the echo data matrix rc by utilizing the optimal weight vector Wopt.

Description

technical field [0001] The invention belongs to the technical field of motion compensation related to space-time adaptive processing (STAP), in particular to a space-time adaptive processing method for a uniform acceleration platform based on array element-pulse domain compensation. The widening of the Doppler spectrum can be narrowed, making it significantly narrower, which improves the improvement factor of the STAP processing, thereby improving the detection performance of the airborne radar for slow targets. Background technique [0002] Since the 1980s, space-time adaptive processing (STAP) technology has been widely concerned. As a key technology to suppress ground clutter received under the condition of moving platforms and an effective method to improve the performance of moving target detection, STAP technology combines airspace Degree of Freedom (DoF) and time-domain DOF can effectively suppress ground clutter that changes with Doppler's azimuth angle. STAP techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S7/36G01S13/02
CPCG01S7/36G01S7/41G01S13/02
Inventor 廖桂生徐雪菲廖瑞乾许京伟
Owner 湖南鼎方电子科技有限公司
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