Passive over-the-horizon radar data and electronic reconnaissance satellite data asynchronous fusion method

Abstract

The invention relates to a passive over-the-horizon radar data and electronic reconnaissance satellite data asynchronous fusion method. The method comprises the following steps of: continuously detecting a radiation source target by a passive over-the-horizon radar and an electronic reconnaissance satellite; calculating the azimuth angle of the radiation source target relative to the passive over-the-horizon radar through radiation source parameters detected by the passive over-the-horizon radar and the electronic reconnaissance satellite; taking the least common multiple of the sampling period of the passive over-the-horizon radar and the sampling period of the electronic reconnaissance satellite as a fusion period T of the system; sorting the direction finding results of the passive over-the-horizon radar and the electronic reconnaissance satellite in an Mth fusion period according to the sequence of the sampling time by taking the sampling time of the fusion center as a reference; and fusing the A azimuth measurement values sequentially obtained in the fusion period, and taking a fusion result as a direction finding result at the Mth fusion moment. The method can effectively solve the problem of asynchronous fusion of data of a passive over-the-horizon radar and data of an electronic reconnaissance satellite.

Description

technical field [0001] The invention relates to the field of detection data fusion. Background technique [0002] With the accelerated evolution of warfare, relying only on a single detection system to detect radiation source targets to obtain their parameter information can no longer meet operational needs. For this reason, the concept of multi-source information fusion is proposed. Multi-source information fusion, also known as multi-sensor data fusion, was first proposed in the 1970s. Multi-source information fusion is an information processing technology that integrates useful information given by multiple information sources under certain criteria to complete the desired task. In the actual military and civilian fields, the most common problem is asynchronous information fusion. Asynchronous information fusion is caused by the different sampling rates of the sensors used and the different delays in transmission. [0003] Passive over-the-horizon radar mainly uses th...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, the data continuity of passive over-the-horizon radar data is good, but the direction finding accuracy is low, which cannot meet the requirements of high-precision target tracking; the direction finding accuracy of electronic reconnaissance satellites is high, but the data loss is serious. poor continuity

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