测量接收机中高精度频率与电平测量方法研究  

Research on High Precision Frequency and Level Measurement Method in Measuring Receiver

作　　者：杜垚 DU Yao(Ceyear Technologies Co.,Ltd.,Qingdao 266555,China)

机构地区：[1]中电科思仪科技股份有限公司,山东青岛266555

出　　处：《电声技术》2022年第6期91-94,共4页Audio Engineering

基　　金：青岛市高端研发机构项目“微弱突发宽带电磁信号微波光子快速探测技术”(NO.21-7-3-9-jch)。

摘　　要：测量接收机可对信号的频率、功率以及幅度调制(Amplitude Modulation,AM)信号、频率调制(Fequency Modulation,FM)信号以及相位调制(Phase Modulation,PM)信号进行精确测量,具有测量参数多、测量动态范围大、测量准确度高、使用方便等特点。本文从分段信号搜索、去除零频、提高扫描读数精度等软件设计算法出发,给出了高灵敏度、高精度的频率测量方法;着重分析影响调谐电平测量精度的原因,给出了功率计结合频谱分析技术实现调谐电平测量原理。The measuring receiver can accurately measure the signal frequency, power and Amplitude Modulation(AM) signal,Fequency Modulation(FM) signal, Phase Modulation(PM) signal and other modulated signals, and has the characteristics of many measurement parameters, large measurement dynamic range, high measurement accuracy, and easy to use. Starting from the software design algorithms such as segmented signal search, de-zeroing frequency, and improving the accuracy of sweep readings, this paper gives a high-sensitivity and high-precision frequency measurement method. The reasons affecting the accuracy of tuning level measurement are analyzed, and the principle of tuning level measurement is realized by combining the power meter with spectrum analysis technology.

关 键 词：测量接收机 高精度频率测量 高精度电平测量 

分 类 号：TH89[机械工程—仪器科学与技术]