针对UHF波段风廓线雷达接收机特点,提出并介绍一种高效、高性能的正交采样的数字接收机,通过对正交采样接收机理论分析,介绍了正交采样、IQ分离、半带滤波、CIC滤波等实现方法。最后通过simulink对设计进行建模、仿真。仿真结果表明了基于正交采样技术的数字接收方案的可行性。
Aiming at the features of wind profiler radar for UHF frequency,an efficient and high performance digital receiver based on orthogonal sampling is designed.Through theoretical analysis of orthogonal sampling receiver,quadrature sampling theory,IQ separation operation,half-band filter,etc are introduced in this paper.Finally,simulation results show that digital receiver using orthognal sampling technique is feasible and efficent.