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Study on Feasibility of Laser Reflective Tomography with Satellite-Accompany

机译：卫星伴行激光反射层析成像的可行性研究

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Laser reflective tomography is a long-range, high-resolution active detection technology, whose advantage is that the spatial resolution is unrelated with the imaging distance. Accompany satellite is a specific satellite around the target spacecraft with encircling movement. When using the accompany satellite to detect the target aircraft, multi-angle echo data can be obtained with the application of reflective tomography imaging. The feasibility of such detection working mode was studied in this article. Accompany orbit model was established with horizontal circular fleet and the parameters of accompany flight was defined. The simulation of satellite-to-satellite reflective tomography imaging with satellite-accompany was carried out. The operating mode of reflective tomographic data acquisition from monostatic laser radar was discussed and designed. The flight period, which equals to the all direction received data consuming time, is one of the important accompany flight parameters. The azimuth angle determines the plane of image formation while the elevation angle determines the projection direction. Both of the azimuth and elevation angles guide the satellite attitude stability controller in order to point the laser radar spot on the target. The influences of distance between accompany satellite and target satellite on tomographic imaging consuming time was analyzed. The influences of flight period, azimuth angle and elevation angle on tomographic imaging were analyzed as well. Simulation results showed that the satellite-accompany laser reflective tomography is a feasible and effective method to the satellite-to-satellite detection.
机译：激光反射层析成像是一种远程，高分辨率的主动检测技术，其优势在于空间分辨率与成像距离无关。伴随卫星是围绕目标航天器进行环绕运动的特定卫星。当使用陪伴卫星检测目标飞机时，可以使用反射层析成像技术获得多角度回波数据。本文研究了这种检测工作方式的可行性。建立了水平圆形舰队的伴随轨道模型，并定义了伴随飞行参数。进行了卫星陪伴的卫星到卫星反射层析成像的仿真。对单基地激光雷达反射层析成像数据采集的工作模式进行了讨论和设计。飞行时间等于所有方向接收数据的消耗时间，是重要的伴随飞行参数之一。方位角确定图像形成的平面，而仰角确定投影方向。方位角和仰角均引导卫星姿态稳定性控制器，以将激光雷达点对准目标。分析了伴随卫星与目标卫星之间的距离对层析成像消耗时间的影响。分析了飞行周期，方位角和仰角对断层成像的影响。仿真结果表明，卫星激光反射层析成像技术是一种可行的行之有效的方法。

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