Multi-base radar target positioning method based on grid division

Abstract

The invention discloses a multi-base radar target positioning method based on grid division. The method comprises the following steps: 1, defining a geodetic coordinate system, a geocentric rectangular coordinate system and a radar station rectangular coordinate system; 2, determining the positions of a radar transmitting station and a radar receiving station; 3, setting the central position of aregion of interest; 4, transferring the position of the receiving station and the central position of the region of interest to a radar rectangular coordinate system; 5, setting the size of divided grids and calculating the central position of each grid; 6, calculating the corresponding distance sum of each grid center relative to each receiving station; 7, obtaining the sum of distances measuredby the plurality of receiving stations at the same moment; 8, associating the sum of the distances obtained in the step 7 and the step 6; and 9, obtaining a target positioning result at a certain moment according to the association result. The method can be applied to cooperative / non-cooperative multi-base radar target detection; the real-time positioning efficiency in multi-base radar target detection can be improved; and false positioning results in multi-base radar target detection are reduced.

Description

technical field [0001] The invention relates to a multi-base radar target positioning method based on grid division, especially a method for quickly obtaining the spatial position of a multi-base radar observation target based on specified space grid division and spatial coordinate conversion theory, belonging to the technical field of radar detection . Background technique [0002] Dual / multistatic radar has outstanding advantages such as anti-stealth, anti-jamming, and survivability. In recent years, the multi-static external radiation source radar target detection technology based on signals such as FM radio, digital TV, and communication has made great progress, and many units have successively The actual system has been developed, and different types of target detection experiments have been carried out. While good experimental results have been achieved, some actual problems have also been exposed. One of the most important problems is that there are multiple receiving...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a multistatic radar target positioning method based on grid division, which has solved the problems of large amount of calculation and false points in the observation existing in the prior art. The present invention utilizes the distance measured by multiple receivers Target location by comparing with the distance sum corresponding to each grid in the area of ​​interest

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