Patent ID: 9207329
Filing Date: 2015-12-08
Classification: G01S

Abstract:
1. A satellite-based positioning system (SPS) receiver, comprising: an analog-to-digital converter (ADC) configured to sample a series of received PRN sequences to provide original time samples responsive to an SPS clock having an SPS sampling rate; a perfect reference generator configured to generate perfect reference samples of a series of perfect reference PRN sequences corresponding to the original time samples of the received PRN sequences; a re-sampler configured to re-sample the original time samples according to a first effective sampling rate different from the SPS sampling rate to provide first re-sampled time samples; and a cross-correlator configured to coherently cross-correlate the first re-sampled time samples with the perfect reference samples to provide a first cross-correlation sum; and a detection module configured to detect a first peak value in the first cross-correlation sum.