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Method for Simplifying Echo Spectrum of Bistatic Synthetic Aperture Radar with Arbitrary Configuration

A synthetic aperture radar, arbitrary configuration technology, applied in the field of radar, can solve the problems of unsuitable high-performance imaging practical application requirements, small space variability, etc.

Inactive Publication Date: 2016-10-26
中国人民解放军91635部队
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Problems solved by technology

However, due to the locality of the Taylor approximation, these methods can only be used in some special configurations of bistatic SAR systems with small target scene ranges or small spatial variability
Therefore, the existing bistatic synthetic aperture radar spectrum simplification method is not suitable for the actual application requirements of high-performance imaging of large-scene GBSAR with multiple platforms and arbitrary configurations

Method used

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  • Method for Simplifying Echo Spectrum of Bistatic Synthetic Aperture Radar with Arbitrary Configuration
  • Method for Simplifying Echo Spectrum of Bistatic Synthetic Aperture Radar with Arbitrary Configuration

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[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0057] Such as figure 1 As shown, it is a schematic flow chart of the method for simplifying the echo spectrum of bistatic SAR with any configuration according to the present invention. A method for simplifying the echo spectrum of bistatic synthetic aperture radar with any configuration, comprising the following steps:

[0058] A. Initialize the parameters of the forward-looking bistatic synthetic aperture radar imaging system,

[0059] Among them, the parameters of the forward-looking bistatic synthetic aperture radar imaging system specifically include: the center frequency ξ of the signal emi...

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Abstract

The invention discloses a method applied to simplification of a random-configuration bistatic synthetic aperture radar echo frequency spectrum. The method comprises the following steps: initializing parameters, discretizing a GBSAR frequency spectrum phase, carrying out approximation of frequency spectrum phase space function, weighing and summating sum of frequency function of the frequency spectrum to obtain a simplification expression. The method applied to simplification of the random-configuration bistatic synthetic aperture radar echo frequency spectrum has the advantages that the linear fitting of the space composite function and frequency composite function in the GBSAR frequency spectrum phase is carried out by a discrete linear least squares method, the GBSAR frequency spectrum is simplified from the polynomial sum to the binomial sum, efficient focusing and imaging are implemented according to the simplification equation by an efficient frequency domain image processing technology, and the GBSAR frequency spectrum is simplified with high efficiency and high accuracy.

Description

technical field [0001] The invention belongs to the technical field of radar, in particular to a method for simplifying the echo spectrum of a bistatic synthetic aperture radar with any configuration. Background technique [0002] Arbitrary configuration bistatic synthetic aperture radar (General bistatic synthetic aperture radar, referred to as GBSAR) is that the transmitter and receiver are placed on various types of platforms such as satellites, aircrafts, and stationary stations, and the platforms are arranged in any geometric configuration. 2D imaging system. Due to the diversity of system platforms and the arbitrariness of geometric configuration, the GBSAR system can conduct multi-angle flexible reconnaissance of the target area of ​​interest, thereby obtaining rich target scattering information. Therefore, the GBSAR system can be applied to all-weather and all-weather aircraft autonomous navigation, target reconnaissance and identification and other fields, and play...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41
CPCG01S13/9011G01S13/9058
Inventor 孙明珠蔡德荣卫强董爱先刘喆
Owner 中国人民解放军91635部队
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