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== Abstract ==
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This paper is focused on the 1090 MHz SSR channel capacity increase by innovative transmission and decoding techniques. A lot of Air traffic control systems use the 1090 MHz channel: SSR downlink (on-board transponders), ADS-B messages, TIS-B, FIS-B. We focus the attention on the MLAT (multilateration) system, useful to localize and identify transponder-equipped targets (aircraft and vehicles). Today multilateration receiver stations have omni-directional antennae, so considering the aircrafts traffic and including the extension of surveillance to cooperating vehicles, the reception of super-imposed signals is more and more probable especially in high traffic density airports. In this paper we show the problem mitigation introducing a technique proposed in the international patent , and the decoding techniques proposed in and. We analyze the channel capacity improvement, then exploit the detection and the TOA estimation of the frequency-shifted and separated signals, and finally the EUROCAE requirements compliance.
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== Original document ==
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The different versions of the original document can be found in:
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* [https://hal.univ-reims.fr/hal-01693624 https://hal.univ-reims.fr/hal-01693624]
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* [http://xplorestaging.ieee.org/ielx5/4636705/4649016/04649030.pdf?arnumber=4649030 http://xplorestaging.ieee.org/ielx5/4636705/4649016/04649030.pdf?arnumber=4649030],
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: [http://dx.doi.org/10.1109/tiwdc.2008.4649030 http://dx.doi.org/10.1109/tiwdc.2008.4649030]
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* [http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.ieee-000004649030 http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.ieee-000004649030],
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: [https://ieeexplore.ieee.org/document/4649030 https://ieeexplore.ieee.org/document/4649030],
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: [https://academic.microsoft.com/#/detail/2131255724 https://academic.microsoft.com/#/detail/2131255724]
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Document information

Published on 01/01/2008

Volume 2008, 2008
DOI: 10.1109/tiwdc.2008.4649030
Licence: CC BY-NC-SA license

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