Method and apparatus for joint data-pilot tracking of navigation signal
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United States of America Patent
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May 12, 2020
Grant Date -
Aug 17, 2017
app pub date -
May 3, 2017
filing date -
Feb 10, 2015
priority date (Note) -
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Abstract
A method for joint data-pilot tracking of navigation signal, including: multiplying a digital intermediate frequency signal with a local carrier to accomplish carrier removal; multiplying a signal after the carrier removal with a data baseband signal and a pilot baseband signal respectively to accomplish code removal; processing a signal after the code removal with integration-and-dump to obtain a coherent integration result of each branch; using the coherent integration results to accomplish data-bit flip detection and calculation of probability-weighting factor; acquiring a data-pilot joint carrier tuning-amount, and tuning the carrier numerically controlled oscillator by the carrier tuning-amount to realize data-pilot joint signal carrier tracking; and acquiring a data-pilot joint code tuning-amount, and tuning the code numerically controlled oscillator to realize baseband signal tracking.
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