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Radar multi-target identification method based on high-resolution one-dimensional (1D) range profile

A recognition method and distance imaging technology, which are applied in the direction of reflection/re-radiation of radio waves, use of re-radiation, measurement devices, etc., can solve the problems of inability to identify the type or attribute of the target, separation, etc., and achieve high promotion and application value and extraction probability. High and adaptive effect

Pending Publication Date: 2019-11-05
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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Problems solved by technology

When there are multiple target echoes in the same space and time resolution unit of the radar, it is difficult for some existing identification methods to separate them, so the target type or attribute cannot be identified

Method used

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  • Radar multi-target identification method based on high-resolution one-dimensional (1D) range profile
  • Radar multi-target identification method based on high-resolution one-dimensional (1D) range profile
  • Radar multi-target identification method based on high-resolution one-dimensional (1D) range profile

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Embodiment Construction

[0015] S1 one-dimensional range image data preprocessing:

[0016] Calculate the kurtosis matrix K of the one-dimensional range image, find the maximum element max(K) of the kurtosis matrix and its corresponding one-dimensional range image, and count the remaining one-dimensional range image set {x i} and outlier kurtosis set {k i}:

[0017]

[0018] where N is the number of one-dimensional range images, X i is the remaining ith one-dimensional range image sample data, μ i is the sample mean, σ i is the sample standard deviation, E(X i -μ i ) 4 is the fourth-order center-to-center distance of the i-th one-dimensional distance image sample data. if k i If it is not positive, the i-th one-dimensional range image is considered to be an abnormal one-dimensional range image and discarded. The one-dimensional range image corresponding to the largest element of the kurtosis matrix is ​​used as the base image, and the minimum entropy spectrum estimation criterion is used f...

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Abstract

The invention relates to a radar multi-target identification method based on a high-resolution 1D range profile, and the method is mainly suitable for radar multi-target identification of a early-warning detection system. The method mainly comprises that data of the 1D image profile is preprocessed; an energy aggregation area is extracted from the 1D image profile; strong scattering points are extracted from the energy aggregation area of the 1D image profile; distribution characteristic of the strong scattering points is estimated; the radial length and attitude of the energy aggregation areaof the 1D image profile are estimated; and multi-target attribute of the radar is discriminated. The method is characterized by easy engineering realization, good multi-target identification effect and sufficient theoretical bases, and the problem in radar multi-target attribute identification of an air fleet target or a group target can be solved rapidly and effectively.

Description

technical field [0001] The invention relates to a radar multi-target recognition method used in an early warning detection system. Background technique [0002] Radar multi-target recognition is an urgent problem to be solved in the modern complex environment. When there are multiple target echoes in the same space and time resolution unit of the radar, it is difficult for some existing identification methods to separate them, so the target type or attribute cannot be identified. However, in practical applications, formation targets or group targets are common flight patterns, so it is of great practical significance to identify multiple targets. [0003] At present, many radar multi-target recognition methods based on high-resolution one-dimensional range images are based on template matching. Library and global search algorithm, through the establishment of a multi-target aliasing high-resolution one-dimensional range image template library, a global search algorithm bas...

Claims

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Application Information

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IPC IPC(8): G01S13/04G01S13/72G01S7/41
CPCG01S13/04G01S13/726G01S7/411Y02A90/10
Inventor 杨学岭孟凡君管志强
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND
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