Satellite dynamic strip region resolution method described by static mesh

Abstract

The invention discloses a satellite dynamic strip region resolution method described by static mesh. The satellite dynamic strip region resolution method comprises the following steps: firstly, dynamically generating an observation strip through satellite parameter characteristics according to a satellite track; secondly, dividing the observation strip by utilizing a static mesh, so as to calculate observation earnings of the mesh and an observation region. A region observation task is dynamically divided into mask tasks according to characteristics of a satellite, and the capability characteristics and observation earnings of the satellite can be sufficiently considered, so that the satellite dynamic strip region resolution method is especially suitable for optimizing the satellite task in a joint observation process of the plurality of satellites. The observation region is divided into a plurality of sub-regions by utilizing the static mesh; the meta tasks are uniformly described and processed; difference between an imaging target and imaging region coverage in the aspect of layout processing is avoided; under the condition that the resolution calculation amount of the strip is remarkably increased, the satellite observation strip is resolved dynamically and rapidly, and uniform processing of the tasks is convenient to realize when the satellite accesses a calculation plan.

Description

technical field [0001] The invention relates to the technical field of satellite observation, in particular to a satellite dynamic strip region splitting method described by a static grid. Background technique [0002] When remote sensing satellites perform regional observation tasks, they usually cannot be completed only by a single scouting, so the observation area must be split into appropriate strips in order to achieve efficient observation. [0003] Region splitting mainly includes: 1) The region is decomposed into a set coverage problem after single scene decomposition; 2) The pre-defined reference system is used to decompose, and the reference system divides the whole world into grids with different numbers according to a certain coordinate system. The regional decomposition is equivalent to "Counting grids"; 3) Decompose the area into parallel strips of fixed width according to the satellite flight radial direction and load width; 4) Decompose the area into dynamic ...

AI Technical Summary

Problems solved by technology

The division method based on the actual geographical distance needs to be calculated to clarify the latitude and longitude values ​​of the four corner points of each grid cell, and the calculated latitude and longitude values ​​are not integer values, which is not convenient to use, and the accuracy is also lost during the calculation process

At the same time, the curvature of the earth's ellipsoid causes the n×n km grid cells to be trapezoidal instead of square, and there are triangular gaps between adjacent grids. The management of these gaps of different sizes makes this grid division method changeable. complicated

In addition, due to the curvature of the earth's ellipsoid, on the earth's ellipsoid, the distance corresponding to 1°longitude in low-latitude areas is longer than the distance corresponding to 1°longitude in high-latitude areas, resulting in inconsistent grid cell sizes, which is inconvenient for management and use

Images