Inter-channel bias calibration for navigation satellite systems

摘要

Dynamic inter-channel bias calibration of a navigational receiver is provided. A reference signal is propagated through front-end circuitry of the receiver. A delay caused by the propagation of the reference signal through the front-end circuitry is measured. The inter-channel bias of the navigational receiver is reduced using the measured delay associated with the front-end circuitry of the receiver.

主权项

1. A method for calibrating an inter-channel bias of a navigation receiver, comprising:
generating a reference signal comprising a pseudo-noise component; measuring a bias delay associated with front-end circuitry of the navigation receiver by comparing a pseudo-noise component of a delayed reference signal with the pseudo-noise component of the reference signal, wherein the delayed reference signal is based upon propagation of the reference signal through the front-end circuitry of the navigation receiver, the front-end circuitry for processing the reference signal and a received satellite signal, wherein the front-end circuitry includes a filter; and generating a correction signal to reduce inter-channel bias.