Quantifying the tracking capability of space-based AIS systems

Author
Skauen, Andreas Nordmo
Date Issued
2016
Keywords
AIS (Automatic Identification System)
Maritim overvåkning
Permalink
http://ffi-publikasjoner.archive.knowledgearc.net/123456789/526
DOI
10.1016/j.asr.2015.11.028
Collection
Articles
Description
Skauen, Andreas Nordmo. Quantifying the tracking capability of space-based AIS systems. Advances in Space Research 2016 ;Volum 57.(2) s. 527-542
1368834.pdf
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Abstract
The Norwegian Defence Research Establishment (FFI) has operated three Automatic Identification System (AIS) receivers in space. Two are on dedicated nano-satellites, AISSat-1 and AISSat-2. The third, the NORAIS Receiver, was installed on the International Space Station. A general method for calculating the upper bound on the tracking capability of a space-based AIS system has been developed and the results from the algorithm applied to AISSat-1 and the NORAIS Receiver individually. In addition, a constellation of AISSat-1 and AISSat-2 is presented. The tracking capability is defined as the probability of re-detecting ships as they move around the globe and is explained to represent and upper bound on a space-based AIS system performance. AISSat-1 and AISSat-2 operates on the nominal AIS1 and AIS2 channels, while the NORAIS Receiver data used are from operations on the dedicated space AIS channels, AIS3 and AIS4. The improved tracking capability of operations on the space AIS channels is presented.
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