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Method and device for extracting pole characteristic of complicated target

A feature extraction and complex target technology, applied in the field of radar recognition, can solve the problem that the poles of complex targets cannot be extracted, and achieve the effect of saving test funds

Active Publication Date: 2010-07-14
哈尔滨工大雷信科技有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to at least solve one of the above-mentioned technical defects, especially solve the defect that the prior art cannot extract the extremities of complex objects

Method used

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  • Method and device for extracting pole characteristic of complicated target
  • Method and device for extracting pole characteristic of complicated target
  • Method and device for extracting pole characteristic of complicated target

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Embodiment Construction

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0033] The present invention is different from the existing technology that directly uses the late transient response data of the experimental test time domain to extract the poles, but uses the frequency domain data obtained by simulation to extract the poles, so it is easier to obtain by calculation means, thereby replacing the darkroom scaling experiment, It not only saves a lot of test funds, but also has the advantages of accurate calculation, convenient experiment, and saving a lot of manpower and material resources.

[0034] Such ...

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Abstract

The invention provides a method for extracting pole characteristics of a complicated target, which comprises the following steps of: obtaining accurate target later period response according to frequency domain data; confirming the pole number according to the obtained target later period response and an improved integral least square matrix binding method and carrying out pole characteristic extraction. The invention adopts the frequency domain data which is can be acquired more easily by a calculation approach, thereby replacing a darkroom shrinking ratio test and saving a great amount of test cost. The invention can realize the pole characteristic extraction on the complicated target, such as various airplane and warship targets. The invention also provides a device for extracting the pole characteristic of the complicated target.

Description

technical field [0001] The invention relates to the technical field of radar identification, in particular to a method and device for extracting complex target pole features. Background technique [0002] The pole is the most reliable and important feature of the radar target in the resonance area. Whether it is the waveform synthesis method or other target recognition methods based on the pole, it depends on the accurate extraction of the pole feature. However, it is very difficult to extract the poles of radar targets. There are a series of difficult problems such as aliasing of early and late responses, unpredictable target pole moduli, and measurement responses susceptible to noise. Existing pole extraction methods include: Prony method, E-pulse method, matrix beam method, and various iterative methods. [0003] Most of the existing pole extraction methods mentioned above extract target poles through time-domain signals. The theoretical model of the time-domain transie...

Claims

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Application Information

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IPC IPC(8): G01S7/41
Inventor 邓维波伍光新权太范杨松岩许斌毛滔
Owner 哈尔滨工大雷信科技有限公司
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