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Radar radiating source signal sorting method for adaptively setting and automatically adjusting parameters

An adaptive, radiation source technology, applied in the direction of instruments, character and pattern recognition, radio wave measurement systems, etc.

Active Publication Date: 2017-10-10
NAVAL AVIATION UNIV
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Problems solved by technology

[0006] In order to solve the problem of accurate sorting of radar radiation source signals, the invention discloses a radar radiation source signal sorting method with parameter adaptive setting and automatic adjustment

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  • Radar radiating source signal sorting method for adaptively setting and automatically adjusting parameters
  • Radar radiating source signal sorting method for adaptively setting and automatically adjusting parameters

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Embodiment Construction

[0084] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0085] use figure 1 In the method shown, 5 radar emitter signals with different modulation types and relatively close parameters are selected for simulation experiments. The change types and value ranges of the working parameters are shown in Table 1.

[0086] Table 1 Radar Radiator Signal Characteristic Parameters

[0087]

[0088] (1) Selection of eigenvectors

[0089] The feature vector extraction is performed on the radar emitter signal, and 500 sample data are generated for each type of radar.

[0090] (2) Search the method of histogram peak statistics to estimate the approximate number of clusters

[0091] Determine the number of divisions based on the number of sample data

[0092] The sample data are distributed on a plane such as figure 2 As shown, and then by searching the histogram peak statistics, the histogram peak map ...

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Abstract

The invention discloses a radar radiating source signal sorting method for adaptively setting and automatically adjusting parameters. The method comprises the following steps: introducing intra-pulse features, namely symmetry Holder indexes for sorting while combining with a pulse arrival angle during selection of a feature vector; setting an expected class number by utilizing a statistic method for searching a histogram peak value according to features of the feature vector based on an iterative self-organizing data analysis technique algorithm (ISODATA for short); preliminarily setting the upper limit of standard deviation of each data distribution in the ISODATA class and the lower limit of each class of inter-central minimum distances; and finally, controlling and setting an adaptive criterion for the upper limit of the standard deviation of each data distribution in the class and the lower limit of each class of inter-central minimum distances during operation of the ISODATA, thereby achieving the accurate final sorting aim. According to the manner, the signal sorting problem is solved.

Description

technical field [0001] The invention relates to a radar radiation source signal sorting method. Background technique [0002] With the rapid development of modern radar technology, especially the wide application of various new system radars, the electromagnetic environment of the battlefield is becoming more and more complex and changeable. The boundary of the feature space described by the basic parameters overlaps seriously, and the radiation source signal sorting based on the traditional five basic parameters basically cannot meet the actual needs. [0003] The intrapulse feature analysis method opens up a new research idea for reducing the overlap of feature spaces, and it makes the idea of ​​extracting new signal parameters to further fully characterize the signal characteristics of radar emitters a reality. [0004] The advantage of the ISODATA algorithm is that through the process of gradual differentiation, it can recognize the essential attributes that most of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02G06K9/62
CPCG01S7/02G06F18/23211
Inventor 关欣朱杭平衣晓
Owner NAVAL AVIATION UNIV
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