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Method for association of ESM passive information with radar active information

A source information and radar technology, applied in the field of information fusion, can solve problems such as different data rates and track correlation uncertainty

Active Publication Date: 2019-04-05
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

Therefore, the available information between the radar and the ESM is only the angle, and the data rates of the two are generally different, so there are many uncertainties in the track correlation

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  • Method for association of ESM passive information with radar active information
  • Method for association of ESM passive information with radar active information
  • Method for association of ESM passive information with radar active information

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Embodiment Construction

[0063] The technical scheme of the present invention is described in detail below in conjunction with specific scenes, and the simulation scene is set as follows:

[0064] Suppose our ESM and radar are arranged in the same place, and the coordinates are (0,0). The enemy has four planes flying towards us, and each plane carries two radiation sources. The azimuth interval between adjacent enemy planes is λ=1.5σ 2 . The radar only tracks the first three targets, and the mean square error of angle measurement is σ r 2 =0.1°, the data rate is 1 second / time. ESM measures the angle of all targets, and the mean square error of angle measurement is σ e 2 =3°, the data rate is 4 seconds / time. The angle measurements of the target by radar and ESM are as follows: figure 2 shown.

[0065] Step 1: Radar and ESM Time Alignment

[0066] When the radar and ESM data rates are different, first time align the observation data. For the jth track, there is n between two ESM data j = 4 ...

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Abstract

The invention belongs to the technical field of information fusion, and relates to a method for association of ESM passive information with radar active information. A linear interpolation method is used firstly, ESM data are aligned to the radar measurement moment; then an association discrimination function is established through 1NN nearest neighbor in a classification mode, and a discrimination threshold is established through a similar Newman-Pearson criterion; then information at different moments is fused through a Dempster-Shafer evidence theory; and finally, an association matrix is determined through hard judgment. It is shown that good performance is achieved after a certain time of accumulation through computer simulation.

Description

technical field [0001] The invention belongs to the technical field of information fusion and relates to a method for associating ESM passive information with radar active information. Background technique [0002] In a multi-sensor information fusion system, the fusion of heterogeneous sensor information between multiple platforms has always been an urgent problem to be solved. In the multi-platform system of radar-Electronic Support Measures (ESM) working together, ESM obtains the characteristic information of the radiation source (emission frequency, pulse width, etc.) by analyzing the signal of the target radiation source, and has strong anti-interference ability . Radar has strong target positioning ability and high accuracy, but its anti-jamming ability and recognition ability are poor. Through radar and ESM data fusion, on the one hand, data from different sensors can be integrated to achieve more reliable decision-making; on the other hand, the high-precision azimu...

Claims

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Application Information

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IPC IPC(8): G01S13/86
CPCG01S13/86
Inventor 许宸章张花国魏平郭昱宁王敏
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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