Patent ID: 8390513
Filing Date: 2013-03-05
Classification: G01S

Abstract:
1. A global navigation satellite systems (GNSS) processor comprising: means for tracking including, a plurality of correlation blocks for producing a number of correlation values for a number of signals comprising one or more channels, each correlation block containing a means for removing a carrier and multiplying a resulting signal by a code corresponding to an expected feature of the signal, where each correlation block is enabled to produce one or more taps within a contiguous code phase range, and where one or more of the taps may be disabled from a computation to conserve power; and means for extending a frequency range of a correlator by performing digital signal processing (DSP) calculations on correlator outputs, the DSP calculations being a discrete Fourier transform (DFT) computation, where DFT lines cover a frequency range centered around a frequency of a code/carrier numerical controlled oscillator (NCO).