基于便携式雷达维修测试平台的高稳时钟源设计  

Design of High-Stability Clock Source Based on Portable Radar Maintenance-and-Test Platform

作　　者：刘永强[1] 梁华[1] LIU Yongqiang;LIANG Hua(Gansu Meteorological Information and Technic support Equipment Center,Gansu,Lanzhou 730020)

机构地区：[1]甘肃省气象信息与技术装备保障中心,兰州730020

出　　处：《气象科技》2022年第4期506-511,共6页Meteorological Science and Technology

基　　金：2015年中国气象局雷达维修维护测试平台建设项目资助。

摘　　要：便携式雷达维修测试平台是集雷达系统性能参数测试、故障诊断、维修保障等功能于一体的智能化移动式技术保障平台,该平台硬件系统采用基于嵌入式机箱设计架构的通用测试仪器。文章针对通用测试仪器板载时钟不能满足雷达系统对测试仪器时钟要求的问题,提出了一种适合于便携式雷达维修测试平台的高稳时钟源设计方案,设计方案包括高稳定度恒温晶振、FPGA、晶振电源控制模块和电源滤波电路模块,实测结果表明,高稳时钟源设计参数达到了输出频率稳定度为±0.5×10^(-6)、相位噪声为-160 dBc/Hz的设计标准,据此设计的高稳时钟源已实际应用于便携式雷达维修测试平台中,平台运行稳定,测试结果优于原板卡自带时钟源,达到了系统设计要求。The portable radar maintenance and test platform is an intelligent mobile technical support platform that integrates the functions of radar system performance parameter testing,fault diagnosis and maintenance protection,etc.The hardware system of the platform adopts the general test instrument based on the embedded chassis design architecture.The article for the general test instrument on board clock can not meet the radar system on the test instrument clock requirements.This paper proposes a highly stable clock source design suitable for the portable radar maintenance and test platform.Design solutions include the high stability thermostat crystal,FPGA,crystal power control module and power filter circuit module.The actual test results show that the high stability clock source design parameters achieve the output frequency stability of ±0.5×10^(-6) and the phase noise of-160 dBc/Hz design standards.The platform is stable according to the design of the high stability clock source,which has been practically applied to the portable radar maintenance and test platform.The test result is better than the original clock source and achieves the system design requirements.

关 键 词：新一代天气雷达 便携式 维修测试平台 高稳时钟源 

分 类 号：P415[天文地球—大气科学及气象学]