Cooperative calibration of platform shared voltage controlled oscillator

摘要

A mobile communication device includes a global navigation satellite system (GNSS) receiver for receiving GNSS signals, a radio frequency (RF) receiver for receiving RF signals and a voltage controlled oscillator supplying an oscillator signal to the GNSS receiver and the RF receiver. The GNSS receiver and the RF receiver use the oscillator signal to receive the GNSS signals and the RF signals. The mobile communication device also includes a processor for initializing and/or adjusting a model of a frequency behavior of the voltage controlled oscillator, and uses the model to track the GNSS signals when computing a location of the mobile communication device.

主权项

1. A mobile communication device including:
a global navigation satellite system (GNSS) receiver for receiving GNSS signals; a radio frequency (RF) receiver for receiving RF signals; a voltage controlled oscillator supplying an oscillator signal to the GNSS receiver and the RF receiver, the GNSS receiver and the RF receiver using the oscillator signal to receive the GNSS signals and the RF signals; and a processor configured to:
initialize a model of a frequency behavior of the voltage controlled oscillator by stepping a control voltage of the voltage controlled oscillator through a predetermined dynamic range and measuring an operating temperature and an oscillation frequency at each step, anduse the initialized model and the oscillator signal to track the GNSS signals when computing a location of the mobile communication device.