Browse > Article
http://dx.doi.org/10.5302/J.ICROS.2009.15.6.649

Design of Efficient Frequency Discriminator for Weak Signal Tracking  

Im, Sung-Hyuck (건국대학교 전자.정보통신공학과)
Jee, Gyu-In (건국대학교 전자.정보통신공학과)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.15, no.6, 2009 , pp. 649-654 More about this Journal
Abstract
In this paper, an frequency tracking algorithm for weak signal tracking is proposed. The proposed frequency tracking algorithm uses a FMS (Fast Minus Slow) discriminator for frequency error estimation. This frequency tracking algorithm shows good frequency estimation performance under weak signal condition and is a computationally efficient for embedded software GNSS receiver. The software GNSS receiver implementing the proposed weak signal tracking algorithms could track GPS signal down to - 159dBm signal strength in the signal generator test and real GPS signal under dense urban condition.
Keywords
FMS discriminator; FLL; weak signal; high-sensitivity; GPS; SDR;
Citations & Related Records
연도 인용수 순위
  • Reference
1 S.-H. Im and G-I. Jee, 'A novel software GPS receiver architecture using partial down-conversion,' ION National Technical Meeting 2007,2007
2 S. M. Kay, Statistical Signal Processing: volume 1 Estimation Theory, Prentice hall, 1993
3 W. J. Hurd, J. I. Statman, and V. A. VIlnrotter, 'High dynamic GPS receiver using maximum likelihood estimation and frequency tracking,' IEEE Transactions on aerospace and electronic systems. vol. AES-23, no. 4, July 1987
4 C. Yang, 'GPS signal tracking with Kalman filter based onjoint code delay and carrier phase and frequency error discriminator,' ION 60th Annual Meeting, June 2004.
5 B. W. Parkinson and J. J. Spilker Jr, GPS Positioning System :Theory and Application Volume I, AIAA, 1996
6 E. D. Kaplan, Understanding GPS : Principles and Applications, Artech House Publisher, Norwood, MA, 1996