基于分布式SAR系统的侦察卫星目标定位技术

Target positioning technology of reconnaissance satellite based on distributed SAR system

摘要:

为解决侦察卫星被动目标定位跟踪精准性不达标的问题，提出基于分布式SAR系统的侦察卫星目标定位应用算法。借助侦查调节模块，估量卫星目标相位累加器实际处置权限，调度SAR型存储模块与D/A分布模块间的定位应用关系，搭建基于分布式SAR系统的卫星定位执行结构。在此基础上，选择理想型号的定位传感器，通过定位坐标转换的方式，连接定位所需的通讯传输协议，实现侦察卫星的目标自定位处理。联合分布式定位原理，在测算卫星目标侦查角度的同时，完成目标定位信息的接收与转存，实现侦察卫星目标定位算法的应用。对比实验结果表明，与DDS算法行为相比，应用新型定位技术后，LCT指标、LOC指标数值均超过60%，抑制侦察卫星被动目标失精准定位跟踪行为的出现。

Abstract:

In order to solve the problem that the accuracy of passive target positioning and tracking of reconnaissance satellite is not up to standard, an application algorithm of target positioning of reconnaissance satellite based on distributed SAR system is proposed. With the help of the reconnaissance adjustment module, the actual disposal authority of the satellite target phase accumulator is estimated, the positioning application relationship between the SAR storage module and D/A distribution module is scheduled, and the satellite positioning execution structure based on the distributed SAR system is built. On this basis, the ideal type of positioning sensor is selected, and the communication and transmission protocol required for positioning is connected through the transformation of positioning coordinates to realize the target self-positioning processing of the reconnaissance satellite. Based on the principle of joint distributed positioning, while measuring the reconnaissance Angle of the satellite target, the target positioning information is received and transferred, and the application of the target positioning algorithm of the reconnaissance satellite is realized. The experimental results show that compared with the behavior of DDS algorithm, the LCT index and LOC index value both exceed 60% after the application of the new positioning technology, which can inhibit the occurrence of the passive target loss precise positioning and tracking behavior of reconnaissance satellites.