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    Galati, Gaspare Leonardi, Mauro Piracci, Emilio G. Petrochilos, Nicolas and Samanta, Soumen 2014. The transponder data recorder: Implementation and first results. IEEE Aerospace and Electronic Systems Magazine, Vol. 29, Issue. 2, p. 6.
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Coherent sources separation based on sparsity: an application to SSR signals

  • Nicolas Petrochilos (a1), Gaspare Galati (a2) and Emilio Piracci (a2)
Abstract

Systems based on secondary surveillance radar (SSR) downlink signals, both with directional and with omni-directional antennae (such as in multilateration), are operational today and more and more installations are being planned. In this frame, high-density traffic leads to the reception of a mixture of several overlapping SSR replies. By nature, SSR sources are sparse, i.e. with amplitude equal to zero with significantly high probability. While in the literature several algorithms performing sources separation with an m-element antenna have been proposed, none has satisfactorily employed the full potential of sparsity for SSR signals. Most sparsity algorithms can separate only real-valued sources, although we present in this study two algorithms to separate the complex-valued SSR sources. Recorded signals in a live environment are used to demonstrate the effectiveness of the proposed techniques.

Copyright
COPYRIGHT: © Cambridge University Press and the European Microwave Association 2009
Corresponding author
Corresponding author: N. Petrochilos Email: petro@ieee.org
References
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[12]Petrochilos, N.; Galati, G.; Mené, L.; Piracci, E.: Separation of multiple secondary surveillance radar sources in a real environment by a novel projection algorithm, in Proc. IEEE ISSPIT 2005, Athens, Greece, 17–21 December 2005.
[13]Petrochilos, N.; Galati, G.; Piracci, E.: Application of array processing to receiving stations of multilateration systems based on ssr signals, IEEE Trans. Aerosp. Electron. Syst., 2008, accepted.
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International Journal of Microwave and Wireless Technologies
  • ISSN: 1759-0787
  • EISSN: 1759-0795
  • URL: /core/journals/international-journal-of-microwave-and-wireless-technologies
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