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Radar signal sorting method under minimum L1 bound norm

A radar signal sorting and radar signal technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as poor radar signal sorting results

Inactive Publication Date: 2014-07-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem of poor radar signal sorting results in highly dense and complex signal environments in existing methods, and proposes a radar signal sorting method under the minimum L1 norm

Method used

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  • Radar signal sorting method under minimum L1 bound norm
  • Radar signal sorting method under minimum L1 bound norm
  • Radar signal sorting method under minimum L1 bound norm

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specific Embodiment approach 1

[0037] Specific implementation mode 1: The process of a radar signal sorting method under a minimum L1 norm in this implementation mode is as follows:

[0038] The process of a radar signal sorting method under the minimum L1 norm is:

[0039] Step 1, preprocessing: perform normalized preprocessing on the pulse description word PDW of the radar signal:

[0040] formula one p = p - p min p max - p min

[0041] Among them, p is the pulse descriptor of the radar signal, and p max Indicates the maximum value of the pulse description word PDW vector p, p min Represents the minimum value of the pulse description word PDW vector p;

[0042] Step 2, establish a sample set: In the radar signal sorting system, the PDW vectors of t...

specific Embodiment approach 2

[0063] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the pulse descriptor PDW of the radar signal described in step 1 is composed of parameters representing the characteristics of the radar signal; wherein, the parameters representing the characteristics of the radar signal Including the direction of arrival DOA of the signal, the signal carrier frequency RF, the pulse width PW and the pulse amplitude PA, together constitute the pulse description word PDW of the radar, that is, PDW={DOA,RF,PW,PA,…}. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0064] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that: the standard sample described in step two is obtained by taking the mean value of each type of radar within the fluctuation range of its PDW parameter, and the PDW parameter of the radar is specific Including direction of arrival DOA, signal carrier frequency RF, pulse width PW and pulse amplitude PA. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to the field of radar signal processing, in particular to a radar signal sorting method under the minimum L1 bound norm. The radar signal sorting method under the minimum L1 bound norm solves the radar signal sorting problem under the high concentration and complex signal environment and comprises the first step of performing preprocessing: performing normalization preprocessing on PDWs of a radar signal, the second step of building a sample set, the third step of building an overcomplete dictionary, the fourth step of performing sparse representation on the overcomplete dictionary, the fifth step of solving the sparse solutions, and the sixth step of performing sorting according to correlation between the sparse solutions. The method is applied to the field of communication.

Description

technical field [0001] The invention relates to the field of radar signal processing, in particular to a radar signal sorting method under the minimum L1 norm. Background technique [0002] Radar signal sorting technology in highly dense and complex signal environment is a key technology in the field of radar signal processing, and it is an urgent problem to be solved in modern electronic countermeasures. Radar signal sorting is the premise and basis for radar feature extraction, recognition and threat assessment, and it has become a key link and technology in modern high-tech warfare and future information warfare. In recent years, with the rapid development of electronic technology, more and more missile-guided weapons are widely used in modern warfare, resulting in complex and dense radar emitter signals appearing in the electronic reconnaissance environment, which brings many challenges to radar signal sorting. Difficulties and challenges. [0003] Radar signal sorting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02
CPCG01S7/2927
Inventor 付宁黄国兴乔立岩
Owner HARBIN INST OF TECH
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