GPS Signal Tracking on a Multi-antenna Mounted Spinning Vehicle by Compensating for the Spin Effects
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To receive GPS satellite signals continuously on a spinning vehicle, an omnidirectional wraparound antenna or multiple patch antennas are needed. If multiple patch antennas are used, as spin effects, Doppler frequency is induced by the rotation of the antennas, and carrier phase changes abruptly when the receiving antennas are changed by the antenna’s beamwidth. Because the spin effects make it difficult for a conventional GPS receiver to track the signals, this paper proposes an algorithm to compensate for the spin effects on a GPS receiver. First, roll angles are estimated by a GPS roll-angle determination algorithm and then the Doppler frequency and the magnitude of the phase discontinuity are calculated based on the estimated roll angles, which are used in the phase locked loop of the receiver to compensate for the spin effects. Finally, the performance of the proposed algorithm is validated by computer simulations.
KeywordsGPS multiple antennas roll angle estimation spin effect
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- E. D. Kaplan and C. J. Hegarty, Understanding GPS Principles and Applications, 2nd edition, Artech House, Inc. USA, 2006.Google Scholar
- R. H. Cantwell and R. Ventresca, “GPS continuous track on a spinning vehicle with multiple patch antennas,” Proceedings of the ION GPS’ 99, pp. 901–906, Sept. 1999.Google Scholar
- J. H. Doty, “Advanced spinning-vehicle navigation - a new technique in navigation on munitions,” Proceedings of the ION 57th Annual Meeting, pp. 745–754, June 2001.Google Scholar
- J. H. Doty, D. A. Anderson, and T. D. Bybee, “A demonstration of advanced spinning-vehicle navigation,” Proceedings of the ION NTM 2004, pp. 573–584, Jan. 2004.Google Scholar
- A. S. C. Svendsen, I. J. Gupta, and C. C. Chen, “Satellite coverage for GPS antennas on small spinning projectiles,” Proceedings of IEEE International Symposium on Antennas and Propagation, July 2011.Google Scholar
- H. C. Im, Y. S. Choi, and S. J. Lee, “Spin effects of GPS signals on a multi-antenna mounted vehicle,” Proceedings of IEEE/ION PLANS 2016, pp. 313–319, April 2016.Google Scholar