低轨道运动目标傅里叶望远镜发射器设计

Design proposal of a Fourier telescopy transmitter for moving objects in low earth orbit

为高分辨率探测与识别空间低轨道运动目标,提出一套傅里叶望远镜发射器阵列配置方案及单个发射器设计方案.该发射器系统整合了大气畸变测量系统、反馈控制校正系统及目标跟踪系统;利用大气湍流波前矫正跟踪技术实现对快速运动目标的准确跟踪;通过同时发射多束干涉激光扫描目标的方法提高成像速度;对激光束干涉及其在湍流大气中斜程传播等情况进行计算机仿真.理论分析和仿真结果表明,该方案可满足低轨道运动目标快速成像对傅里叶望远镜发射器的设计要求.

For the purpose of using high-resolution to detect and identify low earth orbit（LEO） moving space objects,a proposal of the Fourier telescopy transmitter array disposition was presented,and a single transmitter was designed.The proposed transmitter system integrated the atmospheric aberration measurement system,the feedback control system,and the target tracking system.It used atmospheric turbulence wave-front correction and correlative tracking techniques to achieve accurate tracking of fast moving objects,simultaneously emitted multiple interference laser beams sweeping across the target to improve imaging speed,and carried out computer simulation on interference between laser beam pairs and laser propagation along slant paths through turbulence atmosphere.Theoretical analysis and simulation results show that the design from the proposal is reasonably feasible and meets the goal of the rapid LEO objects imaging on Fourier telescopy transmitter design.