[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.11003/JKGS.2012.1.1.001

Performance Analysis of a Vector DLL Based GPS Receiver

Lim, Deok Won (Satellite Navigation Team, Korea Aerospace Research Institute)
Choi, Heon Ho (Department of Electronics Engineering, Chungnam National University)
Lee, Sang Jeong (Department of Electronics Engineering, Chungnam National University)
Heo, Moon Beom (Satellite Navigation Team, Korea Aerospace Research Institute)

Publication Information

Journal of Positioning, Navigation, and Timing / v.1, no.1, 2012 , pp. 1-6 More about this Journal

Abstract

For a Global Positioning System (GPS) receiver, it is known that a Vector Delay Locked Loop (DLL) in which the code signals of each satellite are tracked in parallel by using navigation results shows better performance in the aspect of the tracking accuracy and the robustness than that of a Scalar DLL. However, the quantitative analysis and the logical grounds for that performance enhancement of the Vector DLL are not sufficient. This paper, therefore, proposes the structure of the GPS receiver with the Vector DLL and analyzes the performance of it. The tracking and the positioning accuracy of the Vector DLL are theoretically analyzed and confirmed by simulation results. From the simulation results, it can be seen that the tracking and positioning accuracy has been improved about 30% in case that the receiver is static and the positioning is conducted for every Pre-detection Integration Time (PIT) while C/N0 is 45 dB-Hz.

Keywords

GPS; signal tracking; delay locked loop; Vector DLL;

Citations & Related Records

Reference

1	Abbott, A. S. & Lillo, W. E. 2003, Global Positioning Systems and Inertial Measuring Unit Ultra tight Coupling Method, United States: The Aerospace Corporation.
2	Benson, D. 2007, Interference Benefits of a Vector Delay Lock Loop (VDLL) GPS Receiver, Technical Report of MITRE Corporation.
3	Gustafson, D., Dowdle, J., & Flueckiger, K. 2000, A Deeply Integrated Adaptive GPS-Based Navigator with Extended Range Code Tracking, Proceedings of IEEE PLANS, San Diego, USA.
4	Landis, D., Thorvaldsen, T., Fink, B., Sherman, P., & Holmes, S. 2006, A Deep Integration Estimator for Urban Ground Navigation, Proceedings of ION Annual Meeting/IEEE PLANS, San Diego, USA.
5	Lashley, M. & Bevly, D. M. 2007, Analysis of Discriminator Based Vector Tracking Algorithms, Proceeding of ION National Technical Meeting, San Diego, USA.
6	Pany, T., Kaniuth, R., & Eissfeller, B. 2005, Testing a Vector Delay/Frequency Lock Loop Implementation with the ipex Software Receiver, Proceeding of International Symposium on GPS/GNSS, Hong Kong.
7	Parkinson, B. W. & Spilker, J. J. editors, 1996, Global Positioning System: Theory and Applications Volume 1, Chapter 8, American Institute of Aeronautics and Astronautics, ISBN 1-56347-106-X.
8	Petovello, M. G. & Lachapelle, G. 2006, Comparison of Vector-Based Software Receiver Implementations with Application to Ultra-Tight GPS/INS Integration, Proceedings of ION GNSS, Fort Worth, USA.
9	Spilker, J. J. 1995, Vector Delay Lock Loop Processing of Radiolocation Transmitter Signals, U.S. Patent 5, 398034.
10	Van Dierendonck, A. J., Fenton, P., & Ford, T. 1992, Theory and Performance of Narrow Correlator Spacing in a GPS Receiver, Navigation: Journal of Institute of Navigation, 39, 265-283.
11	Ward, P. W., Betz, J. W., & Hegarty, C. J. editors, 2006, Understanding GPS Principles and Applications, Chapter 5, Artech House, ISBN 1-58053-894-0.