利用梯度算法优化深空天线阵布局  

Optimizing Configuration of Deep Space Antenna Arrays Using Gradient Algorithm

作　　者：史学书 党宏杰 洪家财 焦义文 

机构地区：[1]装备学院光电装备系 [2]航天飞行动力学技术重点实验室 [3]63921部队

出　　处：《装备学院学报》2013年第1期73-76,共4页Journal of Equipment Academy

基　　金：航天飞行动力学技术重点实验室开放基金资助项目(2012afd1014)

摘　　要：深空天线组阵系统需要产生低旁瓣的瞬时合成波束,以便减少临近天体的干扰,增强接收灵敏度。研究了利用梯度算法进行深空天线阵地理空间布局优化,使得合成波束满足工程需求:首先以最小化旁瓣电平为目标,建立了布局优化的目标函数和优化模型;然后给出了梯度优化算法的数学描述,讨论了梯度算法的收敛性,并确定了一套有效的搜索策略;最后,通过数值仿真验证了算法的有效性,并给出了一个规模为100个×12 m深空天线阵的优化布局实例。Deep space antenna arraying system needs low sidelobe instantaneous synthesized beams, so that the interference sources of nearby planetary can be suppressed, and can increase receiving signal power. Array geometric configurations optimization using gradient algorithm is studied, with synthesized beams meeting engineering requirements. Firstly, aimed at minimizing sidelobe of deep space array system, an optimization objective function and optimization model are built, then mathematical description of gradient algorithm for large array configurations optimization is given, convergence of gradient algorithm is discussed, and a set of effective search strategy is employed. Finally, the simulation results show algorithm is practicable and a 100× 12 m antenna locations configuration is optimized based on gradient algorithms

关 键 词：天线组阵 布局优化 深空测控通信 

分 类 号：TN911[电子电信—通信与信息系统]