Reacquisition method of a CDMA modulated satellite signals and receiving apparatus implementing the method
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United States of America Patent
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Apr 14, 2015
Grant Date -
Feb 19, 2015
app pub date -
May 29, 2014
filing date -
May 30, 2013
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Abstract
Acquiring a satellite signal, by, receiving a CDMA-modulated signal; generating a plurality of CDMA-type test signals comprising a reference test signal having a first chip duration, and a plurality of test signals delayed/anticipated of a corresponding time offset from the respective test reference signal, less than the chip duration; calculating correlations between the CDMA-modulated signal and the plurality of test signals for obtaining a plurality of correlation results; selecting, based on the correlation results, acquisition parameters associated to a candidate satellite signal; acquiring or rejecting the acquisition parameters selected based on the correlation results.
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