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Low-Earth orbit satellite constellation for ADS-B based in-flight aircraft tracking

  • Nguyen, Thien H. (Australian Centre for Space Engineering Research (ACSER), School of Electrical Engineering and Telecommunications, UNSW Australia) ;
  • Tsafnat, Naomi (School of Mechanical and Manufacturing Engineering, UNSW Australia) ;
  • Cetin, Ediz (Australian Centre for Space Engineering Research (ACSER), School of Electrical Engineering and Telecommunications, UNSW Australia) ;
  • Osborne, Barnaby (Australian Centre for Space Engineering Research (ACSER), School of Electrical Engineering and Telecommunications, UNSW Australia) ;
  • Dixon, Thomas F. (Australian Centre for Space Engineering Research (ACSER), School of Electrical Engineering and Telecommunications, UNSW Australia)
  • 투고 : 2014.08.21
  • 심사 : 2014.10.20
  • 발행 : 2015.01.25

초록

Automatic Dependent Surveillance Broadcast (ADS-B) is quickly being adopted by aviation safety authorities around the world as the standard for aircraft tracking. The technology provides the opportunity for live tracking of aircraft positions within range of an ADS-B receiver stations. Currently these receiver stations are bound by land and local infrastructural constraints. As such there is little to no coverage over oceans and poles, over which many commercial flights routinely travel. A low cost space based ADS-B receiving system is proposed as a constellation of small satellites. The possibility for a link between aircraft and satellite is dependent primarily on proximity. Calculating the likelihood of a link between two moving targets when considering with the non-periodic and non-uniform nature of actual aircraft flight-paths is non-trivial. This analysis of the link likelihood and the performance of the tracking ability of the satellite constellation has been carried out by a direct simulation of satellites and aircraft. Parameters defining the constellation (satellite numbers, orbit size and shape, orbit configuration) were varied between reasonable limits. The recent MH370 disappearance was simulated and potential tracking and coverage was analysed using an example constellation. The trend of more satellites at a higher altitude inclined at 60 degrees was found to be the optimal solution.

키워드

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