基于DEM和GMTI的收发同置分布式InSAR编队构型设计

针对多星收发同置分布式干涉合成孔径雷达(InSAR),建立了基线的空间几何模型,基于高程测量(DEM)和动目标检测(GMTI)任务设计卫星编队构型。给出了多星收发同置分布式InSAR的基线参数与构型参数的转换关系,在任务对基线的约束下,以小于某指标的测高和测速误差的轨道运行时间为优化目标,设计构型参数并仿真分析,获得了三种不同编队构型的基线稳定性和测量误差。

Formation Design of Distributed Satellites InSAR Based on DEM and GMTI

The baseline of distributed small satellite interferometric synthetic aperture radar （SAR） was set up in this paper. The relationship of formation parameters and baselines was given out based on parasitic SAR system geometry and the baseline requirement of ground moving target indicator （GMTI） and digital elevation model （DEM）. Under the requirement of minimize the error of GMTI and DEM, the formation parameters of the three typical formations were designed, and the relationships between formation parameters and the stability of baseline and the measure error were acquired through the simulation.