J_2项摄动对分布式天基雷达波束形成的影响

The Influence of J_2 Perturbation on Beamforming of Distributed Space-Based Radar

分布式天基雷达小卫星不可避免地要受到摄动的影响,摄动不仅对卫星编队有影响,对雷达稀疏阵列的波束形成也会产生很大的影响。从卫星相对运动方程出发,利用轨道摄动方程,并引入编队构型参数,根据分布式天基雷达对各成员卫星间距小而稳定的要求,对采用空间圆编队的分布式天基雷达卫星编队进行了仿真。利用在J2项摄动影响下的分布式天基雷达卫星编队的仿真结果,进行了分布式天基雷达波束形成的仿真,分析了J2项摄动影响下波束指向的偏移量,为研究分布式天基雷达波束形成技术提供了重要的参考依据。

Small satellites of distributed Space-Based Radar（SBR） are inevitably affected by the perturbation.The perturbation affects not only the satellite formation but also the sparse array beamforming of radar.From the satellite relative motion equations,by using orbital perturbation equations and introducing the formation configuration parameters in,simulations on distributed SBR satellite formation using space circle formation are performed according to the requirement that the spacing between the distributed SBR.and each member satellite should be small and stable.By using the simulation results of distributed SBR satellite formation under the influence of J2 perturbation,the beamforming simulations of distributed SBR and analysis of the beam pointing offset are given,which provide an important reference to the research on the beamforming technology of distributed SBR.