Fast Calculation Method of Time Window of Satellite-ground Link for HY Satellite
In response to the problems of low computational efficiency or low accuracy of the ex-isting methods for calculating the time windows of satellite-ground link for HY Satellite,A fast calculation method for time window of satellite-ground link based on track filtering is proposed in this paper.The method calculates the time window of satellite-ground link for the remaining arcs by rapidly filtering out the track arcs which can't enter the visible range during the mission peri-od.While ensuring high precision calculation results,the redundant calculation is avoided and cal-culation efficiency is improved.Verified by professional simulation software,the results show that the calculation accuracy is in the millisecond range,and the calculation efficiency has been improved by 99.4%.It can effectively solve the problem that the traditional method can't balance calculation efficiency and result accuracy,and can be applied to the space missions such as data transmission resource scheduling and mission planning.
HY satellitesatellite-ground linktime windowboundary conditiontrack filtration
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