A Statistical Inference Technique for GPS Interference Detection

Balaei, Asghar Tabatabaei; Dempster, Andrew G.

doi:10.1109/taes.2009.5310313

Cited by 72 publications

(47 citation statements)

References 11 publications

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“…Variations of the standard energy detector can be performed in the frequency domain and the time domain. In the frequency domain, a detector using an averaged fast Fourier transform (FFT) and power spectral density (PSD) of standard periodogram was proposed in [9] for detecting a narrowband continuous wave interference (CWI). A similar approach was also taken in [5] and [10], but it used the improved periodogram to find the characteristics of the interference signal, which added a window function to correct the drawback of the previous method, and thus was called a Welch periodogram.…”

Section: B Energy Detector Measurementmentioning

confidence: 99%

Assessment of camera capture for GPS RFI monitor

Feng

Jan

Johnson

et al. 2014

2014 IEEE/ION Position, Location and Navigation Symposium - PLANS 2014

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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.

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Section: B Energy Detector Measurementmentioning

confidence: 99%

Assessment of camera capture for GPS RFI monitor

Feng

Jan

Johnson

et al. 2014

2014 IEEE/ION Position, Location and Navigation Symposium - PLANS 2014

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“…Capozza et al [13] employed a discrete Fourier transform (DFT) algorithm to detect and remove abnormal spectral lines from the received signal's band. Balaei and Dempster [14] devised a statistical hypothesis to detect GPS interference in the frequency domain. Other currently used efficient approaches include interference mitigation filters in the transform domain, such as the short-time Fourier transform (STFT) [5] and the wavelet transform (WT).…”

Section: Introductionmentioning

confidence: 99%

CW interference mitigation in GNSS receiver based on frequency-locked loop

Ren

Wang

Jiang

et al. 2016

Sci. China Inf. Sci.

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Global navigation satellite system (GNSS) receivers are highly susceptible to continuous wave (CW) interference because the received signals are extremely weak. Current interference mitigation techniques mainly use a notch filter or transform domain. This paper proposes a computationally effective algorithm based on a frequency-locked loop (FLL) to mitigate interference in GNSS receivers. The performance of the algorithm is validated through an analysis of the characteristics of the interference reduction filter and interference estimation precision. A Monte Carlo simulation is used to compare the proposed algorithm with various previous algorithms: the adaptive IIR notch filter, adaptive linear-phase FIR filter, and N-sigma DFT algorithm. The simulation results show that the proposed algorithm exhibits excellent interference estimation precision and superior antijamming performance compared with the conventional algorithms.

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“…In recent years, in order to combat the ever increasing threat of radio frequency (RF) interference, the study of its effect on global navigation satellite system (GNSS) receivers has attracted significant attention [1][2][3][4][5][6][7][8][9][10]. The exact impact of interference on the GNSS receiver performance is heavily dependent on the receiver configuration, but, in general, interference induces losses in the quantization process, impairs symbol recovery [11], and can significantly degrade acquisition and tracking loop performance [1].…”

Section: Introductionmentioning

confidence: 99%

New decision variables for GNSS acquisition in the presence of CW interference

Abdizadeh

Curran

2014

IEEE Trans. Aerosp. Electron. Syst.

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This paper investigates the problem of Global NavigationSatellite System signal acquisition using a consumer-grade receiver in the presence of continuous wave interference. By examining in detail the impact of interference on the acquisition search space, a set decision variables are developed. These decision variables leverage the systematic properties of the interference observed in the search space, manipulating or differencing portions of it to achieve improved detection performance. Strategies based on these variables are examined under a selection of operating scenarios including acquisition in the presence of interference when the receiver has some, or has no, a priori information regarding the interference. It is shown that a receiver employing these new schemes can tolerate up to 10 dB more interference power than a traditional receiver.

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A Statistical Inference Technique for GPS Interference Detection

Cited by 72 publications

References 11 publications

Assessment of camera capture for GPS RFI monitor

Assessment of camera capture for GPS RFI monitor

CW interference mitigation in GNSS receiver based on frequency-locked loop

New decision variables for GNSS acquisition in the presence of CW interference

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