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Interval-type radar radiation source signal feature type recognition capability analyzing method

A signal feature and type recognition technology, applied in character and pattern recognition, instruments, computer components, etc., can solve the problems of waste of radar radiation source information resources, inability to describe and analyze interval signal feature type recognition capabilities, etc.

Active Publication Date: 2016-05-11
THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing radar emitter signal feature analysis methods and radar emitter type identification methods are almost all aimed at fixed-value signal features, and cannot perform intuitive and detailed description and analysis specifically for the type identification capabilities of interval-type signal features
With the advancement of science and technology, the interval-type radar emitter data resources will continue to increase. If the interval-type radar emitter information cannot be fully and effectively utilized, a large amount of radar emitter information resources will be wasted.

Method used

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  • Interval-type radar radiation source signal feature type recognition capability analyzing method
  • Interval-type radar radiation source signal feature type recognition capability analyzing method
  • Interval-type radar radiation source signal feature type recognition capability analyzing method

Examples

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Embodiment 1

[0065] Embodiment 1: This embodiment is an example of constructing a distribution histogram of interval-type signal features. Assuming that 17 samples of a type of radar radiation source are detected, the carrier frequency signal of each sample is an interval signal feature, and its value is shown in Table 1, and the unit is MHz. Construct a signal feature distribution histogram for the carrier frequency signal, assuming that the number of histogram intervals is 5, that is, NumBlk=5, the steps are as follows.

[0066] Table 1 Interval-type carrier frequency signals of a certain type of radar radiation source samples

[0067]

[0068]

[0069] Step 1, initialize the interval signal feature index to 1, that is, fid=1, and the current interval type carrier frequency signal feature is represented by s;

[0070] Step 2, calculate the distribution range of the current signal feature, the distribution range R of the current signal feature s uses the minimum value R of the samp...

Embodiment 2

[0077] Embodiment 2: as image 3 and Figure 4 As shown, this embodiment is an example of calculating the coincidence degree of intervals of type histograms. Assume that after steps 1-6, three types of radar radiation sources (c 1 、c 2 and c 3 ) histogram interval distribution probability on two interval signal features (carrier frequency and repetition frequency), as shown in Table 3. Among them, the number of histogram intervals of the two interval-type signal features is 12, that is, NumBlk=12. According to steps 7-11, the optimal features for identifying each radar radiation source type are judged from the two interval-type signal features.

[0078] Table 3 Histogram interval distribution probability of interval type carrier frequency and repetition frequency signal characteristics

[0079]

[0080] Step 7, initialize the type index to 1, that is, p=1;

[0081] Step 8, calculate the coincidence degree of the type histogram interval of various radiation sources, an...

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Abstract

The invention discloses an interval-type radar radiation source signal feature type recognition capability analyzing method. The method comprises the following steps: describing distribution ranges and probabilities of interval-type signal features of different types of radar radiation sources through a histogram; comparing distribution differences of the interval-type signal features of the different types of radar radiation sources on the basis; further analyzing interval-type signal feature type recognition capabilities; comparing the interval-type signal feature type recognition capabilities; and outputting optimal interval-type signal features of the different types of radar radiation sources. The method has the advantages that: (1) a method for describing the interval-type radar radiation source signal features through the histogram is proposed, so that the limitation in description of a single fixed data value through a conventional illustrative diagram is broken; (2) based on histogram description, the optimal interval-type features of the radar radiation sources can be further analyzed and recognized; and (3) the calculation cost is low, and method engineering is realized.

Description

technical field [0001] The invention relates to the field of data analysis and processing of multi-type radar radiation sources, in particular to a method for analyzing signal characteristics of interval type radar radiation sources for type identification. Background technique [0002] As we all know, there are more and more signal features of today's radar radiation sources. In addition to the classic pulse descriptor features, more and more intra-pulse features appear. In addition, the types of signal features are becoming more and more complex. Most of the traditional signal feature types are continuous and discrete (see: "Statistics", Jia Junping, Tsinghua University Press, Applied Statistics Series Textbook, 2006.). Nowadays, interval-type signal features have also become an important type of radar emitter data. This is because, as the complexity of radar emitters increases, the types and forms of signal signatures become increasingly diverse. In addition, due to th...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/46
CPCG06V10/507G06F2218/08
Inventor 徐欣朱冰徐琳张广庆饶佳人李霄崔桐王晓璇
Owner THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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