Title :
A look at the radio frequency susceptibility of commercial GPS receivers
Author :
Daher, John K. ; Harris, Joseph M. ; Wheeler, Mark L.
Author_Institution :
Georgia Tech. Res. Inst., Georgia Inst. of Technol., Atlanta, GA, USA
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; electronic equipment testing; radio receivers; radiofrequency interference; radionavigation; satellite relay systems; Global Positioning System; commercial GPS receivers; 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; Bandwidth; Binary phase shift keying; Clocks; Global Positioning System; Interference; Performance analysis; Radio frequency; Receivers; Satellite broadcasting; Satellite navigation systems;
Conference_Titel :
Aerospace and Electronics Conference, 1994. NAECON 1994., Proceedings of the IEEE 1994 National
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-1893-5
DOI :
10.1109/NAECON.1994.332883
