Assessment of camera capture for GPS RFI monitor

Chun Kai Feng, Thomas Johnson, Shau-Shiun Jan, Dennis Akos

研究成果: Conference contribution

2 引文 斯高帕斯(Scopus)

摘要

Today, the global positioning system (GPS) has become the enabling technology of the communication, navigation, surveillance, and air traffic management (CNS/ATM) systems. However, the transmitting power of a GPS signal is extremely low and thus vulnerable to intentional or unintentional radio frequency interference (RFI). Therefore, this paper proposes a terrestrial GPS RFI monitor to identify a possible RFI source to reduce the impact on aviation operation. Each GPS RFI monitor includes a software receiver with either an automatic gain control (AGC) based or a modified energy based RFI detector in order to detect possible interference. The GPS RFI monitor also includes a camera to record the corresponding video stream simultaneously with a RFI event. If a GPS RFI device is present, the RFI monitor and camera will be triggered. Once the detector has been triggered, the associated intermediate frequency (IF) data and video stream are saved. This makes it possible to identify the characteristics of the possible GPS RFI device and to determine the time as well as the impact of the RFI event. In this paper, the recorded GPS IF signal is first processed to draw the time-frequency figures to evaluate the characteristics of the possible GPS interference, and then processed by a software-defined radio (SDR) receiver to assess the impact on positioning. The results from previous studies are compared with several RFI detectors whose detection schemes are presented in this paper as well.

原文English
主出版物標題Proceedings of the 2014 IEEE/ION Position, Location and Navigation Symposium, PLANS 2014
發行者Institute of Electrical and Electronics Engineers Inc.
頁面1272-1281
頁數10
ISBN(列印)9781479933204
DOIs
出版狀態Published - 2014 一月 1
事件2014 IEEE/ION Position, Location and Navigation Symposium, PLANS 2014 - Monterey, CA, United States
持續時間: 2014 五月 52014 五月 8

出版系列

名字Record - IEEE PLANS, Position Location and Navigation Symposium

Other

Other2014 IEEE/ION Position, Location and Navigation Symposium, PLANS 2014
國家/地區United States
城市Monterey, CA
期間14-05-0514-05-08

All Science Journal Classification (ASJC) codes

  • 軟體
  • 電腦科學應用
  • 電氣與電子工程

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