卫星在对地侦察时,通常采用垂直或平行于卫星轨道的方向调整载荷指向。针对载荷的指向调整后,其观测区域发生变化,存在视场超过地球边界等复杂情况,文中通过建立数学模型,给出载荷视场与地球的位置关系,计算了真实的载荷覆盖区域,并给出仿真验证,计算结果与STK吻合。

When conducting surveillance of the earth, the satellite usually adopts the method of adjusting the pointing of satellite′s payloads to achieve more effective surveillance. After the pointing of the payloads is adjusted, the satellite′s field of view would also be changed, giving rise to complicated situations such as the field of view exceeding the boundary of the earth. This paper established a mathematical model to provide the positional relationship between the payloads′ field of view and the earth, worked out the actual coverage area of the payloads on the earth surface, and conducted a simulation verification. The calculation results are consistent with the STK.

TN959. 7