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Detection and Characterization Algorithm of Swept Continuous Wave Interference for Safe GBAS Operation

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Issue Date
2012-09-21
Publisher
ION GNSS 2012
Citation
ION GNSS 2012, Nashville, Tennessee, September 17-21, 2012
Abstract
In this paper, an adaptive lattice IIR notch filter [1] is
employed to track single-tone continuous wave and swept
continuous wave interference signals, and an interference
detection method is proposed. The performance of the
interference detection algorithm is analyzed using
software GPS and interference simulator data.
Furthermore, this paper presents interference source
characterization algorithm using multiple ground stations
interference detection and power estimation results. The
estimation results from each ground station include the
type of interference (single-tone or swept), and estimated
power. They will be combined to obtain more information
of the interference sources including more precise
frequency estimates, and the location of interference. The
estimated interference powers from each ground station
will be used to build weighting factors to estimate the
type of the interference more precisely. If one ground
stations estimated power of the interference is greater
than the power of others, the weight factor will be
increased, and its result is used to decide the types of
interference.
The performance of interference detection and power
estimation algorithm is simulated for scenarios of GPS
signal in the presence of single-tone continuous wave
interference and swept continuous wave interference.
Language
English
URI
https://hdl.handle.net/10371/79208
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Others_기계항공공학부
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