自适应阵列天线接收信号模拟器设计

Design of Receiving Signal Simulator for Adaptive Array Antenna

针对自适应阵列天线信号处理算法的测试和验证问题,设计了现场可编程门阵列的五阵元自适应阵列天线接收信号模拟器,分析了接收信号模拟器的信号生成原理,并给出了装置的系统硬件设计和系统软件设计方法。测试结果表明:信号模拟器能够准确模拟5个阵元天线的接收信号;信号输出类型包括点频信号、BPSK信号、高斯白噪声3种信号;各通道输出信号相位差、功率和频率与设置参数误差均小于1%。所设计的模拟器具有信号类型丰富,动态范围大,配置简单、灵活度高的特点,可有效缩短信号处理算法的测试和验证时间。

In order to test and verify the signal processing algorithm of adaptive array antenna,a receiving signal simulator with five channels is designed based on FPGA.The signal generation principle of the simulator is present,and the system hardware and software design methods are illustrated.The measurement results illustrate that the errors of output signal parameters such as power,frequency,phase difference among each channel,are all less than 1%.The contains single sinusoid,BPSK and Gaussian white noise.The advantages of simulator include rich signal types,large dynamic range,simple and flexible configuration,so that the simulator can help engineer reduce time cost in adaptive array antenna test and verify.