遥感卫星对区域目标可见性的快速计算方法

鄂智博, 李俊峰

清华大学学报(自然科学版) ›› 2019, Vol. 59 ›› Issue (9) : 699-704.

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清华大学学报(自然科学版) ›› 2019, Vol. 59 ›› Issue (9) : 699-704. DOI: 10.16511/j.cnki.qhdxxb.2019.26.020
航空航天与工程力学

遥感卫星对区域目标可见性的快速计算方法

  • 鄂智博, 李俊峰
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Fast simulation algorithm for area target visibility using remote sensing satellites

  • E Zhibo, LI Junfeng
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文章历史 +

摘要

遥感卫星对区域目标可见时间窗口的快速计算,对卫星观测规划任务具有重要意义。该文提出了一种快速算法,首先根据卫星视场类型以及与地面点的几何关系,给出判断卫星对地面点可见性的方法;然后通过离散时间步长结合二分搜索的方法,精确计算卫星对单个离散点的可见时间窗口;最后根据所有离散边界点的可见窗口最终得到对区域目标的可见时间窗口。仿真结果表明:该算法具有很高的效率和精度,与STK(satellite tool kit)计算得到的结果偏差在0.01 s量级。

Abstract

Fast calculations of area target visibility are important for satellite mission scheduling. This paper presents a fast simulation algorithm to compute the visibility of area targets by remote sensing satellites. A method was developed to judge the visibility of a ground point from a satellite based on the satellite's view field and the geometric relation between the satellite and the ground point. Then, the in-view period of a single point was obtained using large time step discretization and a binary search. The in-view period of all the discrete boundary points was then used to determine the visible time window for an area target. Numerical results show that the algorithm is efficient and accurate with the error between the algorithm and satellite tool kit (STK) predictions of aboutt 0.01 s.

关键词

遥感卫星 / 区域目标 / 可见性 / 快速计算方法

Key words

remote sensing satellites / area target / visibility / fast simulation algorithm

引用本文

导出引用
鄂智博, 李俊峰. 遥感卫星对区域目标可见性的快速计算方法[J]. 清华大学学报(自然科学版). 2019, 59(9): 699-704 https://doi.org/10.16511/j.cnki.qhdxxb.2019.26.020
E Zhibo, LI Junfeng. Fast simulation algorithm for area target visibility using remote sensing satellites[J]. Journal of Tsinghua University(Science and Technology). 2019, 59(9): 699-704 https://doi.org/10.16511/j.cnki.qhdxxb.2019.26.020

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自然科学基金面上项目(11672146)

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