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      TDOA Estimation Algorithm of Hybrid Modulation Radar Signals

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          Abstract

          In the modern radar signal environment, hybrid modulation signals are increasingly used in many systems. This study focuses on the Time Difference Of Arrival (TDOA) estimation problem of FSK-BPSK hybrid modulation signals. The method combines the characteristic of modulated signal and utilizes the sum of simple correlation functions of sub-pulses to elicit the complex correlation function of the entire pulse signal. Finally, a correlation function fitting algorithm is used to estimate the exact TDOA. Experimental results indicate an obvious improvement in the accuracy and noise immunity of the method, and the method is appropriate for the TDOA estimation of low-bandwidth hybrid modulation signals.

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          Author and article information

          Journal
          Journal of Radars
          Chinese Academy of Sciences
          01 August 2015
          : 4
          : 4
          : 460-466
          Affiliations
          [1 ] College of Electronic Science and Engineering, National University of Defense Technology
          Article
          697b49ed5c764a2c93061faa3bfb35ee
          10.12000/JR15072

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          Categories
          Technology (General)
          T1-995

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