Abstract:
A global navigation satellite system (GNSS) receiver is provided. The GNSS receiver includes a front end processor (FEP) including a low power signaling path and a high power signaling path; an individual GNSS satellite processing (IGSP) module including a low power signaling path and a high power signaling path; and a module programmed to detect a carrier-to-noise density (C/No) of a signal received at the GNSS receiver and select at least one of the low power signaling path and the high power signaling path of the FEP and IGSP module based on the detected C/No.
Abstract:
A method and apparatus for processing navigational signals with reduced bandwidth by receiving a combination of two navigational signals, reducing the frequency of the combined two navigational signals to an intermediate frequency (IF); converting the IF signal to digital signals; translating the frequency of the IF signal to near baseband; filtering the near baseband signal; reducing the sample rate of the filtered near-baseband signal by a factor; translating a selection of the reduced, filtered, near-baseband signal to a single sidelobe; storing the single sidelobe in memory; and processing the single sidelobe for navigational purposes.
Abstract:
Methods, systems, and portable devices which reduce the power used by a portable device to receive/process satellite navigational system signals and/or to compute the portable device's position using satellite navigational system signals are provided. A method includes retrieving information concerning power usage characteristics based on aggregate data corresponding to a current location of the portable device; and selecting a power saving mode based on the retrieved power usage information from the aggregate data, where each of the plurality of power saving modes reduces power usage in at least one of receiving the satellite navigational system signals, processing the satellite navigational system signals, and computing the portable device's position using the satellite navigational system signals.