Sun, 27 Jul 2008 07:45:06 BST CiteULike: dcastro's Braasch http://www.citeulike.org/user/dcastro/author/Braasch CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dcastro/article/2673345 <i>Aerospace and Electronic Systems, IEEE Transactions on, Vol. 37, No. 1. (2001), pp. 298-304.</i><br /><br />Spread-spectrum ranging multipath model validation results are presented. Previously published theoretical results are compared with data obtained from bench-testing using a multichannel satellite simulator. Results are presented for standard or wide-correlator (i.e., 1 chip early-to-late correlator spacing) and narrow-correlator (i.e., 0.1 chip) GPS C/A-code architectures as well as standard P-code. The close agreement of the bench data and theoretical results confirm the validity of the theoretical model Spread-spectrum ranging multipath model validation MS Braasch MF Dibenedetto doi:10.1109/7.913691 Aerospace and Electronic Systems, IEEE Transactions on, Vol. 37, No. 1. (2001), pp. 298-304. 2008-04-15T12:42:14-00:00 2001 Aerospace and Electronic Systems, IEEE Transactions on 37 1 298 304 gps model multipath range spread-spectrum http://www.citeulike.org/user/dcastro/article/2673343 <i>Aerospace and Electronic Systems, IEEE Transactions on, Vol. 33, No. 1. (1997), pp. 290-295.</i><br /><br />The effects of autocorrelation sidelobes on multipath errors in pseudorandom noise (PRN) ranging systems are investigated. It is shown that both medium-delay (i.e., on the order of 1 PRN chip) as well as long-delay multipath errors are affected. Results are applied to the case of the Global Positioning System (GPS). Autocorrelation sidelobe considerations in the characterization of multipath errors MS Braasch doi:10.1109/7.570787 Aerospace and Electronic Systems, IEEE Transactions on, Vol. 33, No. 1. (1997), pp. 290-295. 2008-04-15T12:41:18-00:00 1997 Aerospace and Electronic Systems, IEEE Transactions on 33 1 290 295 cdma correlation error gps multipath http://www.citeulike.org/user/dcastro/article/2673340 <i>Position Location and Navigation Symposium, 1996., IEEE 1996 (1996), pp. 672-678.</i><br /><br />Multipath represents the dominant error source in satellite-based precision guidance systems. Since multipath errors are not common to the reference station and remote receivers, they are not eliminated through differential corrections and they do not cancel out in a differential carrier-phase tracking system. For precision approach applications, multipath is the most significant obstacle to overcome in the quest for CAT III accuracy and integrity using code-DGPS. Although a multitude of GPS articles discuss the effects of multipath, few derive the basic relationships between the composite signal at the antenna and the resulting measurement error. Furthermore, no validation of the aforementioned theory has been performed to date. This paper presents a comprehensive treatment of the problem. The traditional theoretical multipath error relationships are presented along with validation results obtained from bench-testing using a multichannel satellite simulator. Results are presented for standard and narrow-correlator C/A-code architectures as well as standard P-code. One result of particular interest to the aviation community is validation of the theoretical results which indicate that airframe-based multipath error cannot be reduced with narrow-correlator or P-code technology GPS multipath model validation MS Braasch doi:10.1109/PLANS.1996.509144 Position Location and Navigation Symposium, 1996., IEEE 1996 (1996), pp. 672-678. 2008-04-15T12:40:21-00:00 1996 Position Location and Navigation Symposium, 1996., IEEE 1996 672 678 gps model multipath http://www.citeulike.org/user/dcastro/article/2362131 <i>Proceedings of the IEEE, Vol. 87, No. 1. (1999), pp. 48-64.</i><br /><br />Although originally developed for the military, the Global Positioning System (GPS) has proven invaluable for a multitude of civilian applications. Each application demands specific performance from the GPS receiver and the associated requirements often vary widely. This paper describes the architectures and functions of civilian GPS receivers and then focuses on performance considerations. The fundamental receiver measurements are described and the quality of these measurements are related to the aforementioned receiver architectures GPS receiver architectures and measurements MS Braasch AJ van Dierendonck doi:10.1109/5.736341 Proceedings of the IEEE, Vol. 87, No. 1. (1999), pp. 48-64. 2008-02-11T09:58:35-00:00 1999 Proceedings of the IEEE 87 1 48 64 delay dll gnss gps loop measurement receiver