GPS RF Interference via a TV Video Signal

Timothy Buck, Gaylen Sellick

Abstract:	Intermittent GPS performance had been experienced over a period of approximately four months during the testing phase of an integrated GPS/INS navigation system. Investigation into the problem revealed a TV RF source had created interference in a GPS RF distribution system by means of non-linear distortion in a pre-amplifier producing a harmonic frequency at very close to the LI band of 1575.42 MHz. With proper filtering, the 525.25 MHz fundamental was attenuated which consequently eliminated the nonlinear distortion in the pre-amp. The system performance subsequently improved due to an increase in the GPS signal to noise ratios.
Published in:	Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997) September 16 - 19, 1997 Kansas City, MO
Pages:	1497 - 1501
Cite this article:	Buck, Timothy, Sellick, Gaylen, "GPS RF Interference via a TV Video Signal," Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997), Kansas City, MO, September 1997, pp. 1497-1501.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In