A GNSS receiver reduces the time to first fix by utilizing the properties of existing radiated signals of opportunity, such as AM or FM radio signals, television signals and so forth, to reduce the uncertainties associated with oscillator frequency and phase , and further utilizing an Almanac and battery...http://www.google.fr/patents/US20090322601?utm_source=gb-gplus-shareBrevet US20090322601 - GNSS RECEIVER USING SIGNALS OF OPPORTUNITY AND ASSISTANCE INFORMATION TO REDUCE THE TIME TO FIRST FIX
GNSS RECEIVER USING SIGNALS OF OPPORTUNITY AND ASSISTANCE INFORMATION TO ...
