不确定区域天线扫描目标捕获方法

针对航天测控站天线快速扫描需求与天线机械结构动态性能较低之间的矛盾，设计了天线方位、俯仰角速度正弦变化条件下合成圆周扫描和螺旋扫描轨迹算法，提出了结合目标运动特性选择扫描方式的原则，举例说明了扫描参数计算方法。计算和仿真结果表明，利用所提方法可以将天线加速度控制在天线设计指标以内，目标捕获概率可控。该扫描参数计算方法已经部分应用于我国探月工程。

Target capturing by antenna scanning in uncertain areas

To resolve the contradiction between the requirement for fast antenna scanning and relatively un-satisfactory dynamic performance of mechanical structure in space telemetry tracking and command ( TT&C) stations,this paper designs a track algorithm of circular scanning and spiral scanning based on the sinusoidal variation of antenna azimuth and elevation angle velocity, proposes the principle of selecting scanning modes according to the motion characteristics of targets,and illustrates the calculation methods of scanning parameters with examples. The calculation and simulation results show that the methods men-tioned are able to keep antenna acceleration within its design indexes and target acquisition probability con-trolable. The calculation methods of scanning parameters as mentioned have been partly applied in China's Lunar Exploration Program.