Evaluation Of Radio Frequency Interference (RFI) On Global Navigation Satellite System (GNSS) Signals

Hasmaddy, Wentwes (2015) Evaluation Of Radio Frequency Interference (RFI) On Global Navigation Satellite System (GNSS) Signals. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Evaluation Of Radio Frequency Interference (RFI) On Global Navigation Satellite System (GNSS) Signals.pdf - Submitted Version Download (431kB)

Abstract

This project is aimed at evaluating Global Navigation Satellite System (GNSS) performance during simplistic intentional jamming on GNSS receiver, whereby jamming is conducted using a signal generator with horn antenna, which poses different level signal interferences. The project is designed using GNSS receivers Arduino Compatible Development Board with GPS/GLONASS that receives real GNSS signals. The test evaluation is conducted via field measurement located at Uni. Teknikal Malaysia Melaka (UTeM). Signal generator as a jammer employs the GPS L1 coarse acquisition (C/A) signal which is 1575.42 MHz. Varying different signal power levels, GNSS signals strength and Dilution of Precision DOP of GNSS satellites are observed for different times. Variation in other GNSS error parameters, including ionospheric and tropospheric delays, satellite clock, ephemeris and multipath errors, and unintentional signal interferences and obstructions, could have also resulted in the variation of GNSS signals performance. As the jamming signal power level is increased, probable error of signal reception increase due to decreasing carrier-to-noise density (C/N0) levels for GNSS satellites tracked by the receiver. The increased of DOP value also due to the degradation of satellites accuracy after intentional jamming on the receiver. In the end, the findings will show and discuss the effect of radio frequency interferences (RFI) on GNSS signals.

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