GPS Receiver RF Interference Monitoring, Mitigation, and Analysis Techniques

Abstract

There have been numerous papers published on GPS integrity monitoring from the perspective of detecting and mitigating the effects of space segment failures. Another important aspect of GPS signal integrity that has received less attention is the monitoring and mitigation of radio frequency (RF) interference, which can result in degraded accuracy performance or complete loss of receiver tracking. This paper describes RF interference monitoring and mitigation techniques that have been developed for military GPS receiver applications where intentional jamming must be anticipated. RF interference analysis techniques are also presented. These techniques should be considered if RF interference becomes a source of GPS signal integrity problems for civil avionics applications.