Patent ID: 8884818
Filing Date: 2014-11-11
Classification: G01S

Abstract:
1. A receiver for simultaneously receiving Global Positioning System (GPS) and Global Navigation Satellite System (GLONASS) signals, the receiver comprising: an analog front end (AFE) having at least a first filter, the AFE generating at least one analog-to-digital converted (ADC) output; a digital front end (DFE) including a GPS path and a GLONASS path, the DFE receiving the at least one ADC output of the AFE, the GPS path having at least a second filter, the GLONASS path having at least a third filter; a dual mode interface (DMI) for receiving outputs of the DFE; search engines for receiving outputs of the DMI; and calibration circuitry coupled to at least one of the first, second or third filters, wherein the calibration circuitry is configured to calibrate at least one of the first, second or third filters to correct for delays in components of the receiver and to cause a latency of the GPS and GLONASS signals to be equivalent.