Unambiguous acquisition

Unambiguous acquisition is the acquisition of GNSS signals that present ambiguities in their autocorrelation function, namely the signals that are modulated with a modulation belonging to the Binary Offset Carrier modulation class.

Unambiguous acquisition methods have been widely studied, for example in Martin et al. (2003) and Heiries et al. (2004).

## References

## References

* Heiries, Vincent; Roviras, Daniel; Ries, Lionel; Calmettes, Vincent (2004), "Analysis of NonAmbiguous BOC Signal Acquisition performance", ION 2004, 21-24 Sept 2004, pp. 2611–2622
* Martin, N.; Leblond, V.; Guillotel, G; Heiries, Vincent (2003), "BOC(x,y) signal acquisition techniques and performances", ION 2003, 9–12 September 2003, pp. 188–198

## Further reading

* A. Burian, E.S. Lohan, and M. Renfors, Efficient Delay Tracking Methods with Sidelobes Cancellation for BOC-Modulated Signals, EURASIP Journal on Wireless Communications and Networking, Volume 2007 (2007), Article ID 72626,
* M. Navarro Gallardo, G. Seco-Granados, G. López-Risueño, M. Crisci, "Code Smoothing for BOC Ambiguity Mitigation", Proc. International Conference on Localization and GNSS (ICL-GNSS), 2013
* O. Julien, C. Macabiau, M. Cannon, and G. Lachapelle, “BOC signal acquisition and tracking method and apparatus.” US Patent Application Publication 2005/0270997 A1, Dec 2005
* F. Benedetto, G. Giunta, E. S. Lohan, and M. Renfors, “A Fast Unambiguous Acquisition Algorithm for BOC-Modulated Signals”, IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 62, NO. 3, MARCH 2013
* Z. Yao, “Unambiguous technique for multiplexed binary offset carrier modulated signals tracking,” IEEE Signal Process. Lett., vol. 16, no. 7,pp. 608–611, 2009.

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