Book Chapter10.1007/978-3-662-49831-6_40
DME Interference Mitigation Algorithm Based on Signal Separation Estimation Theory for GPS L5
TL;DR: A new DME interference mitigation algorithm is presented in this paper that can reserve more useful satellite data and is verified by simulations.
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Abstract: L5 signal is set up for civil aviation exclusively in GPS (Global Positioning System), and takes up exclusive frequency band. However, the DME (Distance Measurement Equipment) signal which has already applied for distance measurement works as the same frequency band as GPS L5. DME signal with high power will decrease SINR (Signal to Interference and Noise Ratio) of GPS L5 and even give rise to acquisition failure. On DME interference suppression, the traditional methods will bring loss to useful satellite data. Thus the performance of GPS L5 receiver will suffer from serious degradation. In the light of the received signal model, a new DME interference mitigation algorithm is presented in this paper. Firstly, frequency is estimated with time-modulated windowed all-phase DFT (tmwapDFT). Then, we use the estimated frequency to get amplitude and signal delay information with signal separation estimation theory. Compared with traditional method, the proposed method can reserve more useful satellite data. The performance of proposed method is verified by simulations.
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References
An efficient algorithm for time delay estimation
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TL;DR: The WRELAX method is a relaxation-based minimizer of a complicated nonlinear least squares criterion and can be applied to detecting and classifying roadway subsurface anomalies by using an ultra-wideband ground-penetrating radar.
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DME/TACAN interference and its mitigation in L5/E5 bands
Grace Xingxin Gao
- 28 Sep 2007
TL;DR: In this article, the authors used the Stanford GNSS Monitor System (SGMS) to investigate the DME/TACAN signal environment at Stanford, CA, USA, and the results showed that interference mitigation is beneficial and necessary.
82
Physical layer specification of the L-band Digital Aeronautical Communications System (L-DACS1)
Sinja Brandes,Ulrich Epple,Snjezana Gligorevic,Michael Schnell,B. Haindl,M. Sajatovic +5 more
- 13 May 2009
TL;DR: The results show that L-DACS1 is capable of operating even under severe interference conditions, hence confirming the feasibility of the inlay concept.
53
Characterization of L5 Receiver Performance Using Digital Pulse Blanking
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- 27 Sep 2002
TL;DR: Design requirements along with results characterizing the prototype receiver performance are described, which can provide benefits to GPS receivers operating at frequencies other than L5, in particular L2 with its known dense pulsed environment.
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An Integrated Pulsed Interference Mitigation for GNSS Receivers
TL;DR: A novel technique for estimating and suppressing time-varying pulsed interference signals such as the Distance Measuring Equipment/Tactical Air Navigation (TACAN) signals generated by these pulsed emitters is described.
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