首页 | 本学科首页   官方微博 | 高级检索  
     检索      

数字化干涉仪测角技术
引用本文:丁孝永,童琼.数字化干涉仪测角技术[J].宇航计测技术,2018,37(5):53.
作者姓名:丁孝永  童琼
作者单位:1、北京无线电计量测试研究所, 北京 100039
摘    要:数字化干涉仪测角采用的是高精度数字鉴相技术,该技术与传统的模拟鉴相技术相比可以大幅度提高鉴相精度,从而满足高精度干涉仪测角的要求。基于数字干涉仪鉴相算法,通过两路正交本振信号分别与两路待测相信号相乘,使用CIC 滤波器除乘积中的高频信号,最后通过CORDIC 算法计算出相位差。经过干涉仪测角模拟器上测试结果表明,其数字鉴相误差小于0.2°。

关 键 词:干涉仪测角    数字鉴相    数字接收机

Digital Interferometer Angle Measurement Technology
DING Xiao-yong,TONG Qiong.Digital Interferometer Angle Measurement Technology[J].Journal of Astronautic Metrology and Measurement,2018,37(5):53.
Authors:DING Xiao-yong  TONG Qiong
Institution:1、Beijing Institute of Radio Metrology and Measurement, Beijing  100039, China
Abstract:As compared with traditional analog phase discrimination technology, digital direction finding system of digital interferometer employs high precise digital phase discrimination technology and could thus raise greatly the precision of phase discrimination and satisfy the need of high precise direction finding of interferometer. Based on analysis of phase detection algorithm, this paper used two quadrature LO cross multiply two input signals, and used CIC filter to remove high frequency signal. Processing of atan function based on CORDIC algorithm. Experiment on interferometer angle measurement simulator shows that the error of phase detection is no more than 0.2° .
Keywords:Interferometer angle measurement                                                                                                                        Digital phase detector                                                                                                                        Digital receiver
点击此处可从《宇航计测技术》浏览原始摘要信息
点击此处可从《宇航计测技术》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号