摘要
针对低空、慢速小目标探测易被地面动目标或强地物杂波影响的问题,提出一种抑制近地侧杂波对低慢小目标检测影响的稳健发射波束控制算法。通过约束发射波束对地侧副瓣电平,可以减少对地侧区域的动目标或强地物杂波的回波。算法以波束稳健性为目标函数,以峰均比约束优化发射能量利用率,将该优化问题转换为二阶锥优化(Second-Order Cone Programming,SOCP)问题,并求解该优化问题。仿真结果表明,该算法能够在保持发射效率的同时有效减少近地侧副瓣发射功率,同时提高发射波束的稳健性。
Aiming at the problem that the detection of low-altitude and slow-speed small targets is easily affected by ground moving targets or strong ground object clutter,a robust transmit beam-forming algorithm was proposed to suppress the influence of near-ground clutter on the detection of low-slow and small targets.The echoes of moving targets or strong ground clutter in the ground side area could be reduced,by constraining the side lobe level on the ground side of the transmit beam.The algorithm took beam robustness as the objective function and optimizes the transmit energy utilization with the peak-to-average ratio constraint.The optimization problem could be converted into a Second-Order Cone Programming(SOCP)problem and solved.The simulation results show that the algorithm can effectively reduce the transmission power of the near-earth side sidelobe and improve the robustness of the transmission beam while maintaining the transmission efficiency.
作者
金松坡
庄珊娜
魏晓凤
王鹏毅
Jin Songpo;Zhuang Shanna;Wei Xiaofeng;Wang Pengyi(China Electronics Technology Group Corp 54th Resrarch Institute,Shijiazhuang 050081,China;School of Information Science and Technology,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Satellite Application Division of China Academy of Space Technology,Beijing 100094,China)
出处
《石家庄铁道大学学报(自然科学版)》
2023年第1期114-119,共6页
Journal of Shijiazhuang Tiedao University(Natural Science Edition)
关键词
低慢小目标
波束形成
目标检测
二阶锥优化
low-altitude and slow-speed small targets
beam-forming
target detection
second-order cone optimization