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Object identification method based on high-resolution one-dimensional image information fusion

A target recognition and high-resolution technology, applied in radio wave measurement systems, instruments, etc., can solve the problem of inability to provide recognition rate, and achieve the effect of improving target recognition rate, high recognition rate, and reducing accidental errors

Active Publication Date: 2017-02-22
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, when the attitude angle changes more than 10°, the one-dimensional range image of the target changes greatly. Therefore, in this case, the method of directly using the high-resolution one-dimensional image for recognition cannot provide a qualified recognition rate

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  • Object identification method based on high-resolution one-dimensional image information fusion
  • Object identification method based on high-resolution one-dimensional image information fusion
  • Object identification method based on high-resolution one-dimensional image information fusion

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Embodiment Construction

[0027] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0028] Specific embodiments of the present invention will be further described below.

[0029] Experimental instruments: BSS radar simulation software is used to generate target echoes; Mathworks' MATLAB R2014b is used for data fusion, target length calculation and target recognition.

[0030] Step 1. Set the radar simulation parameters:

[0031] Waveform: Gaussian, square waveform;

[0032] Pulse width: 50us;

[0033] Bandwidth: 200MHz;

[0034] Polarization: horizontal polarization;

[0035] Wavelength: 5cm;

[0036] Pulse repetition frequency: 20Hz;

[0037] Aircraft length: F-15(19.43m), AH-64(15.3m);

[0038] Working distance: 100km;

[0039] Pitch angle: 3°;

[0040] Roll angle: 0°;

[0041] False alarm probability: 0.000001;

[0042] Attitude angle: 0~3°.

[0043] Step 2: Ut...

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Abstract

Provided is an object identification method based on high-resolution one-dimensional image information fusion. The purpose of the invention is to solve how to perform information fusion on the observations of different radars in a network in order to increase resolution. The method comprises a step 1: detecting two aircrafts by using two kinds of radars with different waveforms generated by BSS so as to obtain echo data of the two different radars; a step 2 of performing pulse compression on the echo data to obtain two groups of high-resolution one-dimensional images of an object; a step 3 of performing data fusion on the two groups of high-resolution one-dimensional images by using a weighted average method to obtain a new group of one-dimensional images, wherein a fusion weight is randomly selected between 0 to 1; a step 4 of subjecting the two groups of high-resolution one-dimensional images to a set threshold to acquire the number of sampling points; a step 5 of multiplying the number of sampling points of the new high-resolution one-dimensional images by a preset distance resolution (actual distance between the two sampling points) to obtain the length of the object; and a step 6 of performing object identification by using Bayesian classification.

Description

technical field [0001] The invention relates to a target recognition method based on fusion of high-resolution one-dimensional image information, which is used for radar target recognition, aims at improving the radar target recognition rate, and belongs to the field of radar target recognition. Background technique [0002] With the rapid development of radar technology and the urgent needs of military applications, the problem of target recognition has been paid more and more attention. Target recognition using high-resolution one-dimensional images has become a research hotspot in the field of radar and signal processing. [0003] When the radar bandwidth is wide enough, the radial distance of the target occupies multiple radar range resolution units, so that the high-resolution radar echo presents a continuous fluctuation characteristic, which is usually called a one-dimensional range profile. H.J.Li and S.H.Yang proposed a method to directly use the high-resolution tar...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 梁菁张洋刘晓旭余萧峰段珍珍张健
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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