Satellite optical load reconnaissance probability calculation method based on ground target surface element equivalence

Abstract

The invention relates to a satellite optical load reconnaissance probability calculation method and device based on ground target surface element equivalence, and the method comprises the steps: simplifying a ground target activity region into a rectangular region based on the latitude and longitude coordinates of the ground target activity region, and obtaining a ground target surface element equivalent region; judging a first relative position relation between the equivalent area of the ground target surface element and the maximum load view field range of the optical imaging satellite; on the basis of the first relative position relation, judging a second relative position relation between the equivalent area of the ground target surface element and the actual detection breadth of the optical load of the optical imaging satellite; and based on the first relative position relation or the second relative position relation, calculating the reconnaissance probability of the satellite optical load to the target area in combination with the first equivalent width of the equivalent area of the ground target surface element vertical to the flight path direction of the satellite, the maximum load view field range and the actual detection breadth of the optical load. The method solves the problem that a non-cooperative optical reconnaissance satellite is lack of ground target reconnaissance probability calculation.

Description

technical field [0001] The invention belongs to the field of aerospace reconnaissance, in particular to a method for calculating the reconnaissance probability of a satellite optical load based on the equivalent surface element of a ground target. Background technique [0002] Optical imaging reconnaissance is to carry out photographic reconnaissance on the ground from the spacecraft by installing cameras or cameras. Commonly used remote sensing devices include visible light cameras, television cameras, infrared cameras and multispectral cameras. The most important feature of optical imaging reconnaissance is the high ground resolution, at least better than 5m, and the current highest resolution can reach 0.1m. [0003] Responding to foreign spacecraft reconnaissance is mainly to judge the payload transit time of non-cooperative space reconnaissance satellites to the ground target area and the detection probability of the target within the payload transit period. The traditi...

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Problems solved by technology

[0003] To deal with foreign spacecraft reconnaissance, it is mainly to judge the payload transit time of non-cooperative space reconnaissance satellites to the ground target area and the detection probability of the target during the payload transit period. The traditional detection probability calculation is directly based on the premise that the satellite reconnaissance beam detects the target. The most basic reconnaissance probability calculation is missing, that is, the probability that the actual beam of the reconnaissance satellite is reconnaissance to the target area is missing

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