摘要
通道之间的幅相不一致性和通道带内频响的不一致性严重影响了数字阵列雷达的性能,采用自适应均衡技术可以解决通道的一致性问题。高性能的数字信号处理芯片可以在较高的运算速度下,实现通道的自适应均衡。本文采用最小二乘广义求逆法求解均衡器系数,提出了利用多通道下变频芯片中的可编程滤波器进行均衡的方法。最后通过仿真和测试结果,分析了均衡性能。
The frequency-dependent interchannel mismatch can severely degrade an array's performance unless compensation is used. The compensation can be achieved by the ADSP-TS101S and FPGA chip with high speed now. In adaptive channel equalization, the generalized inverse method is employed to solve equalizer's weight coefficient based on least-square. The method of FIR filter based on multi-channel DDC is presented. Finally, the results are checked by computer simulation.
出处
《雷达科学与技术》
2005年第2期101-105,共5页
Radar Science and Technology
