Radar HRRP Target Recognition Method Based on Selective Principal Component Analysis

A technology of principal component analysis and target recognition, which is applied in the field of radar HRRP target recognition based on selective principal component analysis, can solve the problems of algorithm complexity and algorithm real-time mutual constraints, reduce reconstruction time and computer computing resources, and maintain recognition Effect, the effect of improving the real-time performance of the algorithm

Active Publication Date: 2019-02-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] Purpose of the invention: the present invention aims at the mutual restriction of algorithm complexity and algorithm real-time performance in the above radar HRRP target recognition algorithm. As long as the maximum separability between the reconstructed signals of different targets is ensured for radar automatic target recognition Inspired by the idea that there is no need to ensure that the reconstructed signal has extremely high reconstruction accuracy, on the basis of the radar HRRP target recognition algorithm based on principal component analysis, a radar HRRP target recognition algorithm based on selective principal component analysis is proposed

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  • Radar HRRP Target Recognition Method Based on Selective Principal Component Analysis
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  • Radar HRRP Target Recognition Method Based on Selective Principal Component Analysis

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[0019] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0020] The radar HRRP target recognition method based on selective principal component analysis proposed by the present invention, the general flow chart is as follows figure 1 shown. The existing high-resolution range image signals of three different types of ship targets V1, V2 and V3 are as follows: figure 2 (a), figure 2 (b) and figure 2 (c) shown. Here, taking the measured HRRP signals of three types of ship targets as an example, the radar HRRP target recognition method based on selec...

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Abstract

The invention discloses a radar HRRP target recognition method based on selective principal component analysis. The Fisher criterion is used to realize the selection of principal components with maximum separability among different targets; then the principal components with maximum separability among selected targets are used to realize the fast reconstruction of the original HRRP signal; and finally, radar HRRP target recognition is realized through the reconstruction error between the original HRRP signal and the reconstructed HRRP signal. The invention reduces the reconstruction time and computer operation resources, achieving the effect of further improving the target recognition rate; avoids the complex kernel function algorithm; uses simple Fisher selection criteria to effectively reduce the complexity of the algorithm and improve the real-time performance of the algorithm; and maintains the recognition effect equivalent to the former.

Description

technical field [0001] The invention relates to a radar HRRP target recognition method based on selective principal component analysis, which is used for radar automatic target recognition of high-resolution range images. Background technique [0002] Radar automatic target recognition technology is a hot research field of radar signal processing. Compared with SAR images and inverse SAR images, the high-resolution range image is a one-dimensional high-resolution radar signal that contains rich target structure information and a relatively small amount of data. It has the advantages of easy acquisition and simple processing. . In the actual radar automatic target recognition system, the algorithm complexity and real-time performance of the system are two mutually restrictive factors. The higher the complexity of the algorithm, the worse the real-time performance of the system. Therefore, in order to ensure the real-time performance of the radar automatic target recognitio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/00G01S13/06G01S7/02
CPCG01S7/021G01S13/006G01S13/06
Inventor 陈旺才刘文波杭成张艳艳
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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