Title :
An evaluation of the radio frequency susceptibility of commercial GPS receivers
Author :
Daher, John K. ; Harris, Joseph M. ; Wheeler, Mark L.
Abstract :
The radio frequency (RF) susceptibility characteristics of two commercial Global Positioning System (GPS) receivers were evaluated. A first-order analysis was performed to predict the receiver susceptibility thresholds based on the receiver sensitivity and processing gain. The receiver susceptibility thresholds in the post-acquisition mode were then measured for various interference signal frequencies and modulations. Both receivers exhibited very low susceptibility thresholds to in-band continuous wave (CW) signals. In addition, both receivers could be over-driven with an out-of-band signal. In this state the receivers indicated acceptable figures of merit despite loss of satellite signal lock.<>
Keywords :
electromagnetic compatibility; radio receivers; radiofrequency interference; radionavigation; satellite relay systems; Global Positioning System; RF susceptibility characteristics; commercial GPS receivers; figures of merit; first-order analysis; in-band continuous wave signals; interference signal frequencies; modulation; out-of-band signal; post-acquisition mode; processing gain; radio frequency susceptibility; receiver sensitivity; receiver susceptibility thresholds; satellite signal lock; Global Positioning System; Interference; Performance analysis; Performance gain; Radio frequency; Receivers; Satellite broadcasting; Satellite navigation systems; Signal processing; Spread spectrum communication;
Journal_Title :
Aerospace and Electronic Systems Magazine, IEEE
