遥感卫星覆盖拼接仿真算法研究

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英文篇名：Ground Coverage Stitching Simulation Algorithm for Remote Sensing Satellite 作者：刘书豪 ; 王通 ; 张玥 英文作者：Liu Shuhao;Wang Tong;Zhang Yue;Beijing Institute of Spacecraft System Engineering; 关键词：遥感卫星 ; 对地覆盖 ; 区域拼接 ; 载荷 ; 任务仿真 ; 凸包 英文关键词：remote sensing satellite;;ground coverage;;region stitching;;payload;;mission simulation;;convex hull 中文刊名：XTFZ 英文刊名：Journal of System Simulation 机构：北京空间飞行器总体设计部; 出版日期：2019-04-08 出版单位：系统仿真学报 年：2019 期：v.31 基金：国家自然科学基金(61401022) 语种：中文; 页：XTFZ201904008 页数：7 CN：04 ISSN：11-3092/V 分类号：52-58

摘要

覆盖拼接计算是遥感卫星任务仿真的基础。针对卫星任务仿真中的大角度机动、大步长仿真等情况,提出了一种卫星覆盖区域拼接仿真算法。利用视线相交方法与切线搜索算法,计算卫星瞬时覆盖区域;利用二维凸包算法实现不同仿真时刻覆盖区域的融合;将融合后的区域边界进行细化。该算法处理了临边覆盖等特殊情况,能够解决大步长仿真时覆盖区域融合问题。仿真分析表明,该算法具有较好的计算精度,能够为遥感卫星长时段大步长任务仿真提供算法支撑。
        Ground coverage stitching is the base of remote sensing satellite mission simulation. A coverage stitching simulation algorithm is proposed, considering big time step and attitude maneuver simulation. Transient coverage region is computed by light of view intersection and tangent searching methods. Transient coverage boundaries of different simulation times are stitched by two-dimension convex hull algorithm. Between points of the stitched region polygon edges, new vertexes are interpolated. With the method proposed, limb coverage problem and coverage fusion when time step is large can be solved. Computer simulation results show that the algorithm achieves a fine accuracy and has the ability of supporting remote sensing satellite simulation with long time and large time step.

引文

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