多频无线电引信速度补偿算法研究

针对多频无线电引信中子脉冲回波的相位变化会造成距离像输出产生误差的问题,提出一种实现多频无线电引线距离像速度补偿的方法。通过建立速度补偿准则,给出一次相位项和二次相位项变化时一维距离像不失真条件,将波形熵与免疫科隆选择算法进行结合,以波形熵为搜索的亲和度函数,以速度补偿准则为约束条件,采用免疫克隆选择算法完成搜索,消除径向相对速度对一维距离像的影响,并对速度补偿算法进行仿真。仿真结果表明:与传统的时域相关法相比,该算法提高了补偿精度,同时降低了对采样点数的依赖性,可实现全局搜索,具有较好的收敛性。

Multi Frequency Radio Fuse Velocity Compensation Algorithm

The phase change of sub-pulse echo in multi frequency radio fuse causes range profile output error, and put forwards a method of multi frequency radio fuse range profile velocity compensation method. Through building velocity compensation rule that is when once term and quadratic term change the range profile is not distorted. The waveform entropy and immune clone selection algorithm are united. Waveform entropy as fitness function and velocity compensation rule as constraint conditions. Use immune clone selection algorithm completes searching in order to eliminate the influence of radial velocity on the range profile and achieve velocity compensation of multi frequency radio fuse range profile. The simulation results show that： compared with the traditional time domain correlation method, this algorithm can improve the compensation precision, reduce the dependence on sampling points, realize global search and has great convergence.