@article{e9eb3330904b438f82ed1940f9e5702f,
title = "DME/TACAN interference mitigation for GNSS: Algorithms and flight test results",
abstract = "The Galileo E5a/E5b signals and the Global Positioning System (GPS) L5 signal lie within the aeronautical radionavigation services (ARNS) band. They suffer interference from the services in this frequency band, in particular, pulsed signals from distance measuring equipment (DME) and tactical air navigation (TACAN) systems. To maintain system accuracy and integrity, interference mitigation is beneficial and necessary. We first present the real DME/TACAN environment at Stanford, CA as an example to illustrate the need for mitigating DME/TACAN interference. We then propose a time and frequency joint mitigation algorithm-Hybrid Blanking and its simplified version, frequency domain adaptive filtering (FDAF) for hardware implementation. Finally, a flight measurements campaign was performed over a European DME/TACAN hotspot near Frankfurt, Germany, to record a worst-case DME interference environment. Recorded data from the flight tests mixed with injected GNSS signals verify the effectiveness of the proposed mitigation algorithm.",
keywords = "DME, GPS, Galileo, Interference mitigation",
author = "Gao, {Grace Xingxin} and Liang Heng and Achim Hornbostel and Holmer Denks and Michael Meurer and Todd Walter and Per Enge",
note = "Funding Information: We test our DME mitigation techniques via data, which were collected within the frame of ANASTASIA (airborne new and advanced satellite techniques and technologies in a system integrated approach). ANASTASIA was an integrated project funded by the European community{\textquoteright}s sixth framework programme (DG research). The goal of ANASTASIA research was to provide on-board communication, navigation, and surveillance (CNS) solutions to cope with the expected increase in air traffic by 2020 (European Commission 2009). Funding Information: Fig. 31 Time domain representation of the signal environment on the roof of our Stanford GPS Laboratory at Stanford, CA, USA. The colorful horizontal lines along the x-axis indicate the filtering windows determined by our hybrid blanking algorithm. The algorism well detects the correct pulse centers and determines appropriate filtering windows, because when the DME/TACAN pulses are not as dense as these in Fig. 28 Acknowledgments This work was supported in part by the US Federal Aviation Administration under Grant—G-007 and by the European Commission.",
year = "2013",
month = oct,
doi = "10.1007/s10291-012-0301-9",
language = "English (US)",
volume = "17",
pages = "561--573",
journal = "GPS Solutions",
issn = "1080-5370",
publisher = "Springer Nature",
number = "4",
}