A Model to Evaluate Jammer Influences on Ranging Measurements

• Published in: Journal of Positioning, Navigation, and Timing, 8(2) pp. 41 - 47
• Main Authors: 유원재, 김혜원, 황동환, 소형민(국방과학연구소, 이형근
• Format: Journal Article
• Language: English
• Published: 사단법인 항법시스템학회 01.06.2019
• Subjects: 기타공학
• ISSN: 2288-8187; 2289-0866
• DOI: 10.11003/JPNT.2019.8.2.41

Recently, number of intentional jamming has increased significantly. If GNSS jammers are activated, user receivers can be largely influenced due to the vulnerable characteristic of the GNSS (Global Navigation Satellite System) signal. When the reception power of the jamming signal and that of the navigation signal are similar, the C/A (Coarse Acquisition) chip delay error can occur in the delay locked loop. To evaluate the jamming effect, a new measurement model is formulated based on previous research works. The new model explains how the jamming to signal ratio affects the ranging measurement accuracy and other parameters. To evaluate the validity of the newly formulated model, the experiment results of the previous research works under actual jamming environment are utilized. By evaluating the consistency of the carrier-to-noise ratio (C/N0) and the position error with the actual jamming environment, the validity of the newly formulated model is verified. KCI Citation Count: 0