Proceedings of the Korean Institute of Navigation and Port Research Conference (한국항해항만학회:학술대회논문집)
- Volume 2
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- Pages.353-357
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- 2006
An Adaptive Transversal Filter for GNSS Receiver: Implementation and Performance Evaluation
- Lee, Geon-Woo (Department of Electronics Engineering, Chungnam Nat'l Univ.) ;
- Choi, Jin-Kyu (Korea Ocean Research & Development Institute) ;
- Shin, Dong-Ho (Agency for Defense Development) ;
- Kim, Young-Il (Agency for Defense Development) ;
- Park, Chan-Sik (School of Electrical and Computer Engineering, Chungbuk Nat'l Univ.) ;
- Hwang, Dong-Hwan (School of Electrical and Computer Engineering, Chungnam Nat'l Univ.) ;
- Lee, Sang-Jeong (School of Electrical and Computer Engineering, Chungnam Nat'l Univ.)
- Published : 2006.10.18
Abstract
One-sided and two-sided ATF for GNSS receiver are deigned, implemented and evaluated in this paper. The difference f filter characteristics such as the location of zeros and the frequency response is reviewed and examined with experiments. NLMS adaptation algorithm is adopted for updating the weighting coefficients of the 12-tap FIR filter. he performance of ATF is evaluated using real signals consisting of the signals from GPS simulator and the signal generator. The output of ATF is fed into the SDR to evaluate SNR and the position accuracy. The complexity of implementation is also compared and the effects of the time delay and the phase delay are examined. The experimental results show that one-sided and two-sided ATF give similar performance against single tone CWI.