用于天气雷达标定的便携式频谱仪设计  

Design of portable spectrum analyzer for weather radar calibration

作　　者：郑鹏斌 李昭春 ZHENG Pengbin;LI Zhaochun(Hainan Province Meteorological Detecting Center,Haikou 570203,China;Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province,Haikou 570203,China)

机构地区：[1]海南省气象探测中心,海南海口570203 [2]海南省南海气象防灾减灾重点实验室,海南海口570203

出　　处：《电子设计工程》2022年第1期170-174,共5页Electronic Design Engineering

基　　金：海南省气象局2021年科研项目(hnqxSJ202102)。

摘　　要：针对台式频谱仪运输不便的问题,基于M9391A频谱分析板卡,设计了专用于天气雷达标定的便携式频谱仪。该频谱仪中设计了频谱测量功能和噪声系数测量功能,并针对这两种功能分别设计了软面板以设置参数和显示结果,开发了驱动管理程序用以调用官方驱动程序控制硬件板卡进行信号测量。该频谱仪在实际的测量中可准确测量天气雷达的发射机输入和输出信号的频谱、谱宽、极限改善因子以及接收通道的噪声系数,可用于天气雷达标定。Aiming at the problem of inconvenient transportation of desktop spectrum analyzers,a portable spectrum analyzer dedicated to weather radar calibration is designed based on the M9391A spectrum analysis board.The spectrum analyzer is designed with spectrum measurement function and noise figure measurement function,and for these two functions,a soft panel is designed for parameter setting and result display,and a driver management program is developed to call the official driver program to control the hardware board for signal measuring.The spectrum analyzer can accurately measure the frequency spectrum,spectrum width,limit improvement factor of the weather radar transmitter’s input and output signal,also can accurately measure the noise figure of the receiving channel in the actual measurement,and can be used for weather radar calibration.

关 键 词：天气雷达标定 频谱仪 M9391A 频谱测量 噪声系数测量 

分 类 号：TN95[电子电信—信号与信息处理]