Extended constrained Viterbi algorithm for AIS signals received by satellite

Prevost, Raoul; Coulon, Martial; Bonacci, David; LeMaitre, Julia; Millerioux, Jean-Pierre; Tourneret, Jean-Yves

doi:10.1109/estel.2012.6400111

Cited by 8 publications

(7 citation statements)

References 5 publications

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“…The reception of AIS signals by satellite is a very active subject [3][4][5][6][7][8] which led us to propose new transmission error correction methods [9,18]. This paper is considering a more realistic model for AIS signals including an unknown (possibly time-varying) phase.…”

Section: Relation To Prior Workmentioning

confidence: 99%

Joint phase-recovery and demodulation-decoding of AIS signals received by satellite

Prevost¹,

Coulon

Bonacci

et al. 2013

2013 IEEE International Conference on Acoustics, Speech and Signal Processing

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Section: Relation To Prior Workmentioning

confidence: 99%

Joint phase-recovery and demodulation-decoding of AIS signals received by satellite

Prevost¹,

Coulon

Bonacci

et al. 2013

2013 IEEE International Conference on Acoustics, Speech and Signal Processing

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“…Several ways of handling with problem of packet collision can be encountered in the literature. Some of them are based on data analysis and signal reconstruction (Prevost et al 2012;Seta et al 2016). The approach proposed in this article is focused on the latter issue.…”

Section: Introductionmentioning

confidence: 99%

K-means clustering for SAT-AIS data analysis

Mieczyńska

Czarnowski

2021

WMU J Marit Affairs

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The paper deals with a problem of automatic identification system (AIS) data analysis, especially eliminating the impact of AIS packet collision and detecting existing outliers in AIS data. To solve this problem, a clustering-based approach is proposed. AIS is a system that supports the exchange of information between vessels about their trajectories, e.g. position, speed or course. However, SAT-AIS, which enables the system to work on a global scale, struggles against packet collisions due to the fact that the satellite, which receives AIS data from ships, has a field of view that covers multiple areas that are not synchronized among themselves. As a result, the received data is difficult to process by AIS receivers, because most of the messages have a character of noise. In this paper, results of a computational experiment using k-means algorithm for packet recovery and for dealing with noise have been presented. The outcome proves that a clustering-based approach could be used as an initial step in AIS packet reconstruction, when the original data is incorrect.

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“…In [6], a full-complexity Viterbi-based decoder is employed. The authors have also extended this solution to include information on some known bits of the data field in [11,12]. While the method can be considered as a performance limit, this ideal case is impossible for the satellite-based AIS receiver.…”

Section: Introductionmentioning

confidence: 99%

A cyclic redundancy check-based non-coherent receiver for automatic identification system signals

Zhou

Ban

Wang

2015

Int. J. Satell. Commun. Network.

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SUMMARYA non-coherent receiver for automatic identification system (AIS) signals is proposed in this paper. The proposed receiver is based on the Viterbi algorithm with cyclic redundancy check (CRC) trellis. It takes bit stuffing into consideration and is designed to simultaneously demodulate decode and correct the received messages. The complexity of the proposed receiver has been reduced with state-complexity reduction. Simulations prove that the proposed receiver outperforms those AIS receivers without CRC trellis error correction in terms of BER and packet error rate.

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Extended constrained Viterbi algorithm for AIS signals received by satellite

Cited by 8 publications

References 5 publications

Joint phase-recovery and demodulation-decoding of AIS signals received by satellite

Joint phase-recovery and demodulation-decoding of AIS signals received by satellite

K-means clustering for SAT-AIS data analysis

A cyclic redundancy check-based non-coherent receiver for automatic identification system signals

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