GNSS interference detection using a compressed sensing analog to information converter approach

Rügamer A, Lukcin I, Rohmer G, Thielecke J (2013)

Publication Type: Conference contribution

Publication year: 2013

Edited Volumes: Institute of Navigation International Technical Meeting 2013, ITM 2013

Pages Range: 843-855

Conference Proceedings Title: Proceedings of the 2013 International Technical Meeting of The Institute of Navigation

Event location: San Diego, California

Abstract

GNSS signals are extremely susceptible to all types of interference. Therefore the GNSS bands should be constantly monitored to detect possible threats. Since the GNSS bands are up to 100 MHz wide, receivers sampling at a Nyquist rate (i.e. at least twice the bandwidth) have very stringent requirements in terms of data rates and data storage. In this paper, a compressed sensing random demodulator analog-to-information converter (AIC) architecture for interference detection is proposed. In this approach, only a sub-Nyquist sampling rate is required which greatly reduces the ADC requirements and the size of the raw data output file. For interference detection and recovery the AIC output is tested against several given interference models (assumed as a priori knowledge) using specific reconstruction algorithms. If successful, the original interference signal can be recovered. The structure of the AIC, the signal recovery, and the modeling of the interference source are described in detail. Moreover the performance of this method is assessed for three types of interference (CW, chirp, and pulse). Specifically, the interference detection probability is evaluated as a function of the interferences' signal-to-noise ratio (SNR) and of the downsampling factor used in the AIC.

Authors with CRIS profile

Jörn Thielecke Professur für Informationstechnik (Schwerpunkt Ortsbestimmung und Navigation)

Involved external institutions

Fraunhofer-Institut für Integrierte Schaltungen (IIS) DE Germany (DE)

How to cite

APA:

Rügamer, A., Lukcin, I., Rohmer, G., & Thielecke, J. (2013). GNSS interference detection using a compressed sensing analog to information converter approach. In Proceedings of the 2013 International Technical Meeting of The Institute of Navigation (pp. 843-855). San Diego, California.

MLA:

Rügamer, Alexander, et al. "GNSS interference detection using a compressed sensing analog to information converter approach." Proceedings of the International Technical Meeting of The Institute of Navigation, San Diego, California 2013. 843-855.

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