基于PSO算法的机载数据链发射天线方向图计算方法

Airborne Data Link Transmit Antenna Pattern Calculation Method Based on PSO Algorithm

对于雷达型中、远距拦射空空导弹,在载机数据链传送信息时,如何确定数据链天线的辐射范围、数据链发射天线方向图是关键。本文提出了基于PSO算法的弹道轨迹包络计算方法,并在三自由度弹道仿真的基础上,根据不同的攻击态势,包括载机以不同的速度、高度、发射离轴角,目标以不同的速度、高度、机动过载、进入角等条件下分档组合进行仿真,得出了水平面和垂直面内的数据链天线的作用距离和偏离数据链发射天线主瓣的特性曲线。通过该方法可确定数据链发射机发射天线方向图的计算方法,并提高效率。

For the active radar guided missile, how to determine the radiation range and transmit an- tenna pattern of data link are key problem, when the airborne data link is transmitting. Based on particle swarm optimization （PSO）algorithm a ballistic trajectory envelop caculation method is put forword. Ac- cording to different attack situation, including the aircraft with different speed, height, launch off axis an- gle, the target with different speed, height, motor overload, entrance angle, the simulation are done on the basis of three degree of freedom trajectory simulation. The ranging coverage of data link antenna in horizontal plane and vertical plane as well as the characteristic curve of deviating the data link transmit antenna main lobe are got. By this method, the calculation method for data link transmitter to transmit an- tenna pattern can be determined, and the efficiency of calculation can be irnnrovad