NAVIGATION SIGNAL DATA PILOT FREQUENCY COMBINED TRACKING METHOD AND DEVICE

摘要

A navigation signal data pilot frequency combined tracking method and device. The method comprises: multiplying a data pilot frequency combined medium-frequency signal by a local carrier controlled by a carrier numerically controlled oscillator (NCO), and completing carrier stripping; respectively multiplying the signal after the carrier stripping by a data baseband signal and a pilot frequency baseband signal controlled by a code NCO, and completing code stripping; performing integration and zero clearing on the signal after the code stripping to obtain each branch coherent integration result; utilizing the coherent integration result to implement a data reversal detection and a probability weighting factor calculation; assisting a data pilot frequency combined carrier regulation amount estimation with a data reversal detection result and the probability weighting factor to obtain a carrier regulation amount; assisting a data pilot frequency combined code regulation amount estimation with the data reversal detection result and the probability weighting factor to obtain a code regulation amount; controlling the carrier NCO by means of the carrier regulation amount to implement tracking of a data pilot frequency combined carrier signal; and controlling the code NCO by means of the code regulation amount to implement tracking of a data pilot frequency combined baseband signal.