基于DDS的动态多普勒模拟器的设计与应用  

Design and Application of Doppler Simulation Based on DDS

作　　者：魏永辉[1] 白英奇[1] 成票宁[1] 

机构地区：[1]西安卫星测控中心,陕西渭南714000

出　　处：《现代电子技术》2006年第7期80-81,共2页Modern Electronics Technique

摘　　要：在航天测控领域中,测控系统的动态捕获、跟踪性能和测量精度是非常重要的因素,为检测测控雷达的动态捕获、跟踪性能和测量精度,对直接数字频率合成技术进行了分析,提出基于DDS的动态多普勒模拟器的设计方案,产生70MHz为中心的高精度准确度的频率,达到对测控雷达中频单元动态测试的目的,此设计在工程中的应用效果良好。In space flight observe and control field, observe and control catching, following performance and measuring precision are important factors,in order to measure and observe and control catching,following performance and measuring the precision dynamically of the radar,this text analyses and proposes the design plan based on dynamic Doppler＇s simulator of DDS to the synthetic technology of digital frequency directly, produces 70 MHz as high accuracy frequency of accuracy of centre, achieves to observe and control radar intermediate frequency purpose that it has better application on the project.

关 键 词：DDS NCO 频率合成器 动态多普勒模拟器 

分 类 号：TN742.1[电子电信—电路与系统]