Evaluation of the Effect of Radio Frequency Interference on Global Positioning System (GPS) Accuracy via GPS Simulation

Defence Science Journal

Dinesh Sathyamoorthy¹  M.A. Zainal Fitry¹  M. Mohd Faudzi¹ 

[1] Science and Technology Research Institute for Defence, Malaysia

关键词: Global positioning system;    GPS simulation;    radio frequency interference;    carrier-to-noise density;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Defence Scientific Information & Documentation Centre

【 摘 要 】

In this study, Global positioning system (GPS) simulation is employed tostudy the effect of radio frequency interference (RFI) on the accuracyof two handheld GPS receivers; Garmin GPSmap 60CSx (evaluated GPSreceiver) and Garmin GPSmap 60CS (reference GPS receiver). Both GPSreceivers employ the GPS L1 coarse acquisition (C/A) signal. It wasfound that with increasing interference signal power level, probableerror values of the GPS receivers increase due to decreasingcarrier-to-noise density (C/N0) levels for GPS satellites tracked by thereceivers. Varying probable error patterns are observed for readingstaken at different locations and times. This was due to the GPSsatellite constellation being dynamic, causing varying GPS satellitegeometry over location and time, resulting in GPS accuracy beinglocation/time dependent. In general, the highest probable error valueswere observed for readings with the highest position dilution ofprecision (PDOP) values, and vice versa. Defence Science Journal, 2012, 62(5), pp.338-347 , DOI:http://dx.doi.org/10.14429/dsj.62.1606

【 授权许可】

Unknown