Joint TDOA, FDOA and differential Doppler rate estimation: Method and its performance analysis
作者: Dexiu HUZhen HUANGShangyu ZHANGJianhua LU
作者单位: 1Space Technology Research Center, Tsinghua University, Beijing 100084, China
2Zhengzhou Information Technology Institute, Zhengzhou 450002, China
刊名: Chinese Journal of Aeronautics, 2018, Vol.31 (1), pp.137-147
来源数据库: Elsevier Journal
DOI: 10.1016/j.cja.2017.11.005
关键词: Differential Doppler rateFrequency difference of arrivalPassive locationPerformance analysisTime difference of arrival
英文摘要: Abstract(#br)Considering the estimation accuracy reduction of Frequency Difference of Arrival (FDOA) caused by relative Doppler companding, a joint Time Difference of Arrival (TDOA), FDOA and differential Doppler rate estimation method is proposed and its Cramer-Rao low bound is derived in this paper. Firstly, second-order ambiguity function is utilized to reduce the dimensionality and estimate initial TDOA and differential Doppler rate. Secondly, the TDOA estimation is updated and FDOA is obtained using cross ambiguity function, in which relative Doppler companding is compensated by the existing differential Doppler rate. Thirdly, differential Doppler rate estimation is updated using cross estimator. Theoretical analysis on estimation variance and Cramer-Rao low bound shows that the...
全文获取路径: Elsevier  (合作)
影响因子:0.438 (2012)

  • Doppler 多普勒
  • differential 差动的
  • performance 性能
  • analysis 分析
  • location 定位
  • estimation 估计
  • difference 区别
  • arrival 达到