风廓线雷达中频数字接收机设计研究

摘要

Windprofiler radar is a radio remote-sensing sounding system for detectingthe atmosphere wind. The analog receiver adopted by traditional radar receivers is cockamamie and the precision of signal pretreatment is not very high. The structure of digital receiver of wind profiler radar is studied by the approach of intermediate frequency digitization technique on the basis of software radio, including IF sampling, digital down converter, I, Q data processing. At last, the feasibility of design scheme is validated by the simulations and practical tests.%风廓线雷达是用于大气风场探测的无线电遥感系统,传统的雷达接收机采用模拟接收机,结构繁琐且信号处理精度不高.基于软件无线电,运用中频数字化技术,提出了一种数字化接收机的设计方案,包含中频采样、数字下变频、IQ数据处理等.通过对方案进行仿真和测试,验证了方案的可行性.