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Efficient ISAR translation compensation method for complex moving target

A technology of complex motion and compensation methods, applied in the field of signal processing, can solve the problems of low signal-to-noise ratio, complex target motion, and high computational complexity, achieve good translation compensation performance, avoid multi-dimensional search, and low computational complexity.

Pending Publication Date: 2020-10-30
CHONGQING AEROSPACE ROCKET ELECTRONIC TECH CO LTD +1
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Problems solved by technology

[0004] In view of this, the present invention aims at the problems of low precision and high computational complexity in existing translation compensation methods due to complex target motion and low signal-to-noise ratio in complex detection environments, and proposes a robust and efficient complex moving target ISAR translation compensation method

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  • Efficient ISAR translation compensation method for complex moving target
  • Efficient ISAR translation compensation method for complex moving target
  • Efficient ISAR translation compensation method for complex moving target

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Embodiment Construction

[0050] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0051] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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Abstract

The invention relates to an efficient ISAR translation compensation method for a complex moving target, and belongs to the technical field of signal processing. The method comprises the steps of firstly, modeling a target echo signal into a multi-component polynomial phase signal; gathering energy of all scatterers on the target to the same distance unit by utilizing phase difference and Keystonetransformation; focusing the energy of all scatterers in the distance unit into a high-resolution strong point through Lussell distribution transformation, and accurately obtaining a target motion parameter; and finally, achieving ISAR translation compensation. According to the method, good translation compensation performance can be kept in a low SNR environment, multi-dimensional search is avoided, the calculation complexity is low, and the method has certain feasibility in practical application.

Description

technical field [0001] The invention belongs to the technical field of signal processing and relates to an efficient ISAR translation compensation method for complex moving targets. Background technique [0002] As a high-resolution imaging radar, inverse synthetic aperture radar (ISAR) can accurately acquire high-resolution images of non-cooperative targets all-weather, all-weather, and long-distance, and has a wide range of application values ​​in military and civilian fields. and application potential. In the ISAR imaging system, the complex motion of the target can usually be decomposed into translation and rotation. Rotation is beneficial to imaging and can produce high resolution in azimuth; while translation will cause envelope shift and phase error of target scattering points, which is harmful to imaging, seriously affecting imaging quality, and sometimes even unable to obtain target ISAR images , need to be compensated. At the same time, in the complex detection ...

Claims

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Application Information

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IPC IPC(8): G01S13/90
CPCG01S13/9011G01S13/9017G01S13/9064
Inventor 赵静张成祥邹辰龙陈兵陆遥
Owner CHONGQING AEROSPACE ROCKET ELECTRONIC TECH CO LTD
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