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

基于频率补偿的时延估计方法
引用本文:邢翠柳,陈建民.基于频率补偿的时延估计方法[J].飞行器测控学报,2012(1):34-37.
作者姓名:邢翠柳  陈建民
作者单位:中国电子科技集团公司第54研究所
摘    要:无源时差定位中,当目标处于运动状态时,多普勒频率的存在将导致时延差估计精度变差。自相关法和互相关法相结合的多普勒频差估计方法可以获得可靠性较高、估计精度较好的频差估计结果。对该结果进行频差补偿后,采用基于相位谱的时延估计方法获得两信号间的时延差。经过仿真验证,这种基于频差补偿的时延估计方法可以有效降低多普勒频差对时延差估计精度的影响。

关 键 词:无源时差定位  时延估计  频差补偿  相位谱

Method of Delay Estimation Based on Frequency Compensation
XING Cuiliu,CHEN Jianmin.Method of Delay Estimation Based on Frequency Compensation[J].Journal of Spacecraft TT&C Technology,2012(1):34-37.
Authors:XING Cuiliu  CHEN Jianmin
Institution:(Research Institute No.54 of CETC,Shijiazhuang 050081)
Abstract:The existence of Doppler frequency in normal TDOA(Time Difference of Arrival) location will bring more delay estimation errors if the object is in motion.A method combining autocorrelation and cross-correlation gives a better estimation of the frequency difference.Then,a method based on phase spectrum is used to estimate the delay following frequency compensation.Simulation results show that the method based on frequency compensation significantly minimizes the impact of frequency difference on the accuracy of delay estimation.
Keywords:Time Difference of Arrival(TDOA) Location  Delay Estimation  Frequency Compensation  Phase Spectrum
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《飞行器测控学报》浏览原始摘要信息
点击此处可从《飞行器测控学报》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