Target clustering method of imaging satellite observation scheduling

Abstract

The invention discloses a target clustering method of imaging satellite observation scheduling. In the method, an optimal target clustering scheme is obtained by obtaining target clustering conditions and qualities of satellite observation, a maximum gain value of the target clustering scheme of a satellite in the orbit circle and an optimal target clustering scheme and finishing a target clustering step, and a set of targets covered by various observation activities of the satellite is further obtained. The target clustering method of the imaging satellite observation scheduling can satisfy using rules and performance characteristics of various operations of the satellite with small computation cost, ensure that the satellite can finish more observation tasks within the given time and improve the using efficiency and the benefits of satellite resources, and has small imaging distortion.

Description

technical field [0001] The present invention mainly relates to the field of aerospace application technology, in particular to a method for scheduling, combining and optimizing imaging satellite observation tasks. Background technique [0002] Imaging satellites have unique advantages such as wide coverage, long operation time, no national boundaries and airspace restrictions, and no need to consider personnel safety. Therefore, since the appearance of imaging satellites, they have been highly valued by countries all over the world. Environmental protection, urban planning, and many fields such as agriculture and meteorology have played an important role. [0003] Usually, imaging satellites implement observations according to a predetermined observation plan, which specifies at what time, what observation angle, and which ground areas the satellite will image within a given time range. The observation plan is formulated by the satellite management department according to t...

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Problems solved by technology

[0004] 1. The satellite can only image from one observation angle at the same time;

[0005] 2. Satellite observation tasks must be performed within the visible time window with the observation target;

[0007] 4. Satellite observation must meet the operational constraints of the satellite itself

[0017] In summary, it can be found that in the current research on imaging satellite scheduling problems, these literatures only give some simple clustering rules, which are not very operable, or the effect is not obvious

In fact, for imaging satellites with a strictly limited number of side swings, since one side swing means that the camera is turned on and off once, and usually the best side swing angles for observation of different ground targets are different, so if The satellite uses the best roll angle to observe each target, which often means that the satellite can only complete the number of tasks corresponding to the number of rolls, resulting in very low observation efficiency

At present, there are no related reports on imaging satellite scheduling by considering optimized task cluster observations

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