Thu, 24 Jul 2008 23:20:33 BST CiteULike: dcastros boc http://www.citeulike.org/user/dcastro/tag/boc CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dcastro/article/2609724 <i>Aerospace and Electronic Systems, IEEE Transactions on, Vol. 43, No. 3. (2007), pp. 951-964.</i><br /><br />A new multipath mitigation technique is proposed for binary offset carrier (BOC) signals in global navigation satellite systems (GNSS) using the concept of gating function originally conceived for the GPS coarse-acquisition (C/A) code. Specially-tailored pulses are utilized to diminish the number of false-lock points of the code discriminator response and to improve the multipath mitigation capability. The code loop includes only four real correlators (two extra correlators are required for the simplified bump-jumping algorithm with BOC(n,n) signals). Results obtained with BOC(n,n) and BOC(2n,n) signals show that this technique eliminates the multipath ranging errors for reflected rays with relative delays typically above twenty percent of the spreading code chip duration, thus comparing favorably with the conventional receiver correlation techniques. Gating Functions for Multipath Mitigation in GNSS BOC Signals FD Nunes FMG Sousa JMN Leitao doi:10.1109/TAES.2007.4383585 Aerospace and Electronic Systems, IEEE Transactions on, Vol. 43, No. 3. (2007), pp. 951-964. 2008-03-28T23:04:21-00:00 2007 Aerospace and Electronic Systems, IEEE Transactions on 43 3 951 964 boc gnss mitigation multipath http://www.citeulike.org/user/dcastro/article/2859763 <i>Applications and the Internet Workshops, 2007. SAINT Workshops 2007. International Symposium on (2007), pp. 57-57.</i><br /><br />Binary offset carrier (BOC) signal tracking is one of the challenging problems in future global navigation satellite systems (GNSS) including Galileo and global positioning system (GPS), because false lock could be generated in the tracking procedure due to multiple side-peaks in BOC autocorrelation. Multipath mitigation is another challenging problem in GNSS systems, because the presence of multi-path signals gives a range error. Recently, a novel tracking scheme for the BOC signal was proposed by Garin [8]. However, it can not completely resolve the ambiguity problem due to the false lock and has not enough multipath mitigation performance. Moreover, Garin¿s scheme is applicable to only BOC(n, n). In this paper, we propose a novel unambiguous multipath mitigation scheme. The proposed scheme is applicable to various BOC signals (i.e., BOC(kn, n)) and does not incur false lock point in the tracking procedure. In addition, the proposed scheme has appropriate multipath mitigation performance than traditional and Garin¿s schemes. A Novel Unambiguous Multipath Mitigation Scheme for BOC(kn, n) Tracking in GNSS Sanghun Kim Seungsoo Yoo Seokho Yoon Sun Kim doi:10.1109/SAINT-W.2007.10 Applications and the Internet Workshops, 2007. SAINT Workshops 2007. International Symposium on (2007), pp. 57-57. 2008-06-03T18:59:27-00:00 2007 Applications and the Internet Workshops, 2007. SAINT Workshops 2007. International Symposium on 57 57 boc gnss mitigation multipath tracking http://www.citeulike.org/user/dcastro/article/2764002 <i>Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on (2007), pp. 645-648.</i> The Research of Side-Band Acquisition for BOC-Modulated Signal Li Yang Chengsheng Pan Yongxin Feng Yuming Bo doi:10.1109/WICOM.2007.167 Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on (2007), pp. 645-648. 2008-05-07T06:41:16-00:00 2007 Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on 645 648 acquisition boc gnss signal http://www.citeulike.org/user/dcastro/article/2421437 <i>Position, Location, And Navigation Symposium, 2006 IEEE/ION (2006), pp. 342-347.</i> An Enhanced Correlation Processing Multipath Mitigation Technique for BOC Signals V Heiries D Rovirasy V Calmettes L Ries Position, Location, And Navigation Symposium, 2006 IEEE/ION (2006), pp. 342-347. 2008-02-24T13:28:57-00:00 2006 Position, Location, And Navigation Symposium, 2006 IEEE/ION 342 347 boc correlation mitigation multipath processing signal technique http://www.citeulike.org/user/dcastro/article/1915469 <i>Communications, 2007. ICC '07. IEEE International Conference on (2007), pp. 4438-4443.</i> On the Acquisition Ambiguity for Galileo BOC(n,n) Modulated Signals G Avellone M Frazzetto E Messina doi:10.1109/ICC.2007.733 Communications, 2007. ICC '07. IEEE International Conference on (2007), pp. 4438-4443. 2007-11-14T19:20:29-00:00 2007 Communications, 2007. ICC '07. IEEE International Conference on 4438 4443 acquisition boc galileo modulation signal http://www.citeulike.org/user/dcastro/article/1915467 <i>Telecommunications, 2007. ITST '07. 7th International Conference on ITS (2007), pp. 1-5.</i><br /><br />Multipath is an issue of paramount importance in the GNSS context, and the dominant error source for the Delay Lock Loop (DLL) used for code tracking. This paper introduces an optimized Multiple Gate Delay (MGD) code tracking implementation in the modified GRANADA Bit-true Software Receiver Simulator. Then the tracking performance of the optimized MGD structure is presented via GRANADA simulation results. This tracking performance is also compared with the tracking performance of High Resolution Correlator (HRC) and of the narrow correlator or narrow Early-Minus-Late (nEML) structures. The tracking performance criteria include Multipath Error Envelopes (MEEs) and Root Mean Square Error (RMSE) for both multipath static channels and fading channels. It is shown that the optimized MGD structure has a better performance than nEML and HRC in the multipath channels, and that the GRANADA Bit-true Software Receiver Simulator is a useful tool for testing the performance. GRANADA validation of optimized Multiple Gate Delay structures for Galileo SinBOC(1,1) signal tracking Xuan Hu Elena Lohan Telecommunications, 2007. ITST '07. 7th International Conference on ITS (2007), pp. 1-5. 2007-11-14T19:19:57-00:00 2007 Telecommunications, 2007. ITST '07. 7th International Conference on ITS 1 5 boc galileo granada mgd signal tracking