Method and device for remote sensing satellite searching for moving targets at sea

Abstract

The invention provides a method and device for a remote sensing satellite to search a moving target at sea and relates to the remote sensing satellite field. In the embodiment of the invention, beforeeach searching, a last remote sensing satellite observation result is used to update the first probability of the moving target at sea, and each first probability acquired through current updating isused to carry out correlation operation so as to acquire and discover the prediction area with a largest target probability, which means that one prediction area in a searching plan is acquired. In the technical scheme of the embodiment, the problem of a large error caused by only relying on historical experience to carry out target searching is overcome, before each searching, according to the result of the last searching, a probability parameter needed in the current searching is updated so that the prediction area with the largest target probability can be selected and searched. Searchingefficiency is increased, simultaneously, the usage efficiency of the remote sensing satellite is improved, and valuable remote sensing satellite resources are saved.

Description

technical field [0001] The invention relates to the field of satellite search, in particular to a method and device for remote sensing satellites to search for moving targets on the sea. Background technique [0002] Remote sensing satellites use various remote sensors onboard to observe or search for targets on the ground or in the sea. Because remote sensing satellites have the advantages of wide coverage, long duration, and no restrictions on airspace and national boundaries, they play an important role in ocean search and military investigation. [0003] At present, the search of moving targets (ships, ships, etc.) at sea is widely implemented by remote sensing satellites. Maritime mobile targets refer to ships that sail in a certain sea area and complete certain operational tasks. When remote sensing satellites are searching for moving targets on the sea, they first determine the operating sea area to be searched for on the basis of information such as the target’s re...

AI Technical Summary

Problems solved by technology

Before the start of the search, the area of ​​each search has been determined according to the set parameters. This processing scheme cannot use the information obtained from the previous search to guide the next search plan, so that remote sensing satellites can search for moving targets on the sea. Inefficient flaws, wasting precious remote sensing satellite resources

[0005] In addition, each remote sensing satellite has its own observation area. In the actual observation process, the observable range of a remote sensing satellite may not completely cover all the predicted areas when passing through the operating sea area, so select one of them when passing through the operating sea area. If the observation search is carried out in a predicted area, the prepared search plan will exceed the execution capability of the corresponding remote sensing satellite, resulting in a blind spot in the search, which is not conducive to finding the moving target

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