不同类型遥感传感器对地覆盖区域仿真与计算

Coverage Area in Different Types of Remote Sensors:Simulation and Calculation

分析了遥感传感器对地覆盖的几何特性,将常见的遥感传感器按照成像覆盖模式分为球冠面圆形覆盖和球面四边形覆盖,推导了两类覆盖模式的投影几何,建立了星下点和侧摆两种成像方式下的对地覆盖区域仿真计算模型.基于覆盖区域仿真模型和星地空间基准的转换关系,设计了通用于常见遥感传感器的对地覆盖区域仿真算法流程,以实际的卫星平台、传感器和轨道参数实验验证了该仿真算法的有效性.

The paper analyzes geometric coverage of common remote sensors for earth observation. These are classified into two modes： spherical circular coverage and spherical quadrilateral coverage. Projective geometries of the two coverage modes are induced and simulation models of coverage in nadir and side imaging modalities built. Based on the simulation models, a universal calculation process is established for geometric coverage of common remote sensors, including transformations among six ground and spatial coordinate systems. Simulations are carried out with real satellite and sensor parameters,showing effectiveness of the proposed calculation process.