Abstract
This paper presents a new approach for smoothing long time series of position estimates of ground GNSS (global navigation satellite system) receivers. The fractional Brownian motion (fBm) model is employed to describe the position coordinate estimates that have long-range dependencies. A new and low-complexity method is proposed to estimate the Hurst parameter and the simulation results show that the new method achieves good accuracy and low complexity. A modified leaky least mean squares (ML-LMS) estimator is proposed to filter the long time series of the position coordinate estimates, which uses the Hurst parameter estimates to update the filter tap weights. Simulation results demonstrate that this ML-LMS estimator outperforms the classic LMS estimator considerably in terms of both accuracy and convergence.
Original language | English |
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Title of host publication | VTC Fall 2011 |
Subtitle of host publication | 2011 IEEE Vehicular Technology Conference Fall |
Place of Publication | Piscataway, NJ |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Number of pages | 5 |
ISBN (Electronic) | 9781424483273, 9781424483266 |
ISBN (Print) | 9781424483280 |
DOIs | |
Publication status | Published - 2011 |
Externally published | Yes |
Event | IEEE 74th Vehicular Technology Conference, VTC Fall 2011 - San Francisco, CA, United States Duration: 5 Sept 2011 → 8 Sept 2011 |
Other
Other | IEEE 74th Vehicular Technology Conference, VTC Fall 2011 |
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Country/Territory | United States |
City | San Francisco, CA |
Period | 5/09/11 → 8/09/11 |
Keywords
- GNSS positioning
- fractional Browinian motion model
- Hurst parameter estimation
- modified leaky LMS estimator