TY - GEN
T1 - Interference characteristics for the civil airport environment using time-frequency analysis
AU - Sun, Chih Cheng
AU - Jan, Shau Shiun
PY - 2012
Y1 - 2012
N2 - Nowadays with the developing augmentation system or regional satellite systems, the performance of GNSS for civil users is extremely improved especially on the error budget from system characteristics. However, unpredictable factors on the ground user environment, such as intentional or unintentional interferences, strongly degrade the performance of GNSS receiver. It is a significant issue to monitor and investigate the interference effect while applying GNSS for safety of life applications, aviation applications especially. In this study, a low-cost GPS interference monitoring system was deployed at a civil airport for the long-term interference monitoring, and so far several interference events were observed during this period. This paper focused on the reorganization of what the interference observed is, and identifications of the interference characteristics and the influence on navigation service. The Fourier-sine-spectrum-based time-frequency method analyzed the recorded intermediate frequency signal to speculate the interference statistics such as the period, the duration, the frequency of occurrence, and so on. In addition, the interference influence was evaluated on the criterion of the positioning results and the estimated Carrier-to-Noise ratio (C/N0) in GNSS signal tracking process. In summary, this paper offers the possibility to find useful information of these interference events for the airport environment in locating jammers or mitigating the effects of interference signals.
AB - Nowadays with the developing augmentation system or regional satellite systems, the performance of GNSS for civil users is extremely improved especially on the error budget from system characteristics. However, unpredictable factors on the ground user environment, such as intentional or unintentional interferences, strongly degrade the performance of GNSS receiver. It is a significant issue to monitor and investigate the interference effect while applying GNSS for safety of life applications, aviation applications especially. In this study, a low-cost GPS interference monitoring system was deployed at a civil airport for the long-term interference monitoring, and so far several interference events were observed during this period. This paper focused on the reorganization of what the interference observed is, and identifications of the interference characteristics and the influence on navigation service. The Fourier-sine-spectrum-based time-frequency method analyzed the recorded intermediate frequency signal to speculate the interference statistics such as the period, the duration, the frequency of occurrence, and so on. In addition, the interference influence was evaluated on the criterion of the positioning results and the estimated Carrier-to-Noise ratio (C/N0) in GNSS signal tracking process. In summary, this paper offers the possibility to find useful information of these interference events for the airport environment in locating jammers or mitigating the effects of interference signals.
UR - http://www.scopus.com/inward/record.url?scp=84866263000&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866263000&partnerID=8YFLogxK
U2 - 10.1109/PLANS.2012.6236901
DO - 10.1109/PLANS.2012.6236901
M3 - Conference contribution
AN - SCOPUS:84866263000
SN - 9781467303866
T3 - Record - IEEE PLANS, Position Location and Navigation Symposium
SP - 347
EP - 354
BT - Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium, PLANS 2012
T2 - 2012 IEEE/ION Position, Location and Navigation Symposium, PLANS 2012
Y2 - 23 April 2012 through 26 April 2012
ER -