Target detection method based on two-dimensional reconstruction algorithm

A technology of target detection and reconstruction algorithm, applied in missile, countermeasure, radar signal processing, radar real-time signal processing system design and electronic reconnaissance field, it can solve the nonlinear change of target echo phase, the reduction of signal-to-noise ratio, and reliability. Strong and other problems, to achieve the effect of preserving the signal-to-noise ratio, increasing reliability, and clear physical concepts

Active Publication Date: 2019-01-08
XIDIAN UNIV
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Problems solved by technology

[0003] Due to the agility of the radar carrier frequency within a certain range, the target echo phase changes nonlinearly, which affects the target high-resolution range image synthesis and Doppler information extraction, the signal-to-noise ratio is reduced, and the reliability is not strong

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  • Target detection method based on two-dimensional reconstruction algorithm
  • Target detection method based on two-dimensional reconstruction algorithm
  • Target detection method based on two-dimensional reconstruction algorithm

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Embodiment Construction

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0017] The embodiment of the present invention provides a target detection method based on a two-dimensional reconstruction algorithm, such as figure 1 As shown, the method includes the following steps:

[0018] Step 1. Establish the transmit signal model of the frequency agile radar and the echo signal model of the frequency agile radar;

[0019] In step 1, the specific transmission signal model of the frequency agile radar is established a...

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Abstract

The invention discloses a target detection method based on a two-dimensional reconstruction algorithm, belonging to the technical field of radar signal processing. The target detection method based onthe two-dimensional reconstruction algorithm comprises the following steps of: step 1, establishing a transmitting signal model of a frequency agile radar and an echo signal model of the frequency agile radar; step 2, calculating a two-dimensional joint dictionary matrix corresponding to the echo signal model of the frequency agile radar; and step 3, obtaining a compressed sensing model, and calculating to obtain a distance and a speed of a target according to the two-dimensional joint dictionary matrix corresponding to the echo signal model of the frequency agile radar as target detection results. Through exploring sparse characteristics of a target scene, the speed and distance of the target can be directly reconstructed by means of the two-dimensional reconstruction method.

Description

Technical field [0001] The invention belongs to the technical field of radar signal processing, and particularly relates to a target detection method based on a two-dimensional reconstruction algorithm, which can be used for the design of frequency agile radar, as well as the design of radar real-time signal processing system and the fields of electronic reconnaissance, countermeasures, missiles and the like. Background technique [0002] The pulse carrier frequency transmitted by the pulse-to-pulse frequency agile radar changes rapidly within a certain range, and each carrier frequency can change according to a certain rule or randomly hop; frequency agile radar has a series of advantages: 1) can improve anti-jamming performance , 2) Increase the radar detection range, 3) Effectively suppress the interference of sea clutter and other distributed clutter, 4) Improve tracking accuracy, etc.; In the increasingly complex electromagnetic environment of modern battlefields, frequency a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/292
CPCG01S7/292Y02A90/10
Inventor 全英汇姚洪彬吴耀君马宝洋杜潇剑陈侠达
Owner XIDIAN UNIV
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