某型雷达中频数字化仿真  

Digital Intermediate-Frequency Simulation of Certain Radar

作　　者：林澄清[1,2] 赵修斌[1] 廖赣兵 张光景 

机构地区：[1]空军工程大学电讯工程学院 [2]福建连城94750部队51分队

出　　处：《通信技术》2010年第2期101-104,共4页Communications Technology

摘　　要：依据某型精密进场雷达实时工作的信号体制,采用中频直接正交采样实现正交检波的方法完成数字中频信号处理。在Matlab仿真软件中对工作时的发射信号、回波中频信号进行计算机模拟和数字正交采样仿真,最后结合现场可编程门阵列提出中频数字化的工程设计方法。从仿真的结果来看,效果较好,可以较好地对接收的目标信号进行分析,从而进一步验证了正交解调方法的可行性,该方法可以在雷达信号处理当中加以广泛应用。According to the practical signal system of certain precision approach radar （PAR）, the digital intermediate-frequency signal processing is achieved by the mothod of ortho-demodulation. The transmiting signal, intermediate-frequency echo signal and digital ortho-sampling are simulated by Mablab software. Finally, in combination with FPGA, the engineering design of digital intermediate-frequency signal processing. The simulation result indicates that the received target signal could be fairly analyzed, thus verifying the feasibility of ortho-demodulation method, and this method could be used ing radar signal processing.

关 键 词：精密进场雷达 正交检波 数字中频化 

分 类 号：TN958.4[电子电信—信号与信息处理] TN957.511[电子电信—信息与通信工程]