Abstract
The paper reports on the development of a low-cost device for low data rate communications with tracking and positioning capabilities. We investigate the performance of two different position estimation methods based on the estimate of the time-of-arrival (TOA) of the UWB signal at a set of receivers/sensors. The performance evaluation is performed in terms of the root mean-squared (RMS) error of the position coordinates estimation and the failure rate. We first study the direct-calculation method which gives exact solutions of a set of simultaneous equations. We then study one of the classical nonlinear optimization techniques, the Davidon-Fletcher-Powell (DFP) quasi-Newton algorithm. Both the direct-calculation method and the nonlinear optimization algorithms do not require any knowledge of the TOA estimation error variance or distribution. This advantage would be attractive for practical applications.
| Original language | English |
|---|---|
| Title of host publication | 2004 International Workshop on Ultra Wideband Systems; Joint with Conference on Ultra Wideband Systems and Technologies, Joint UWBST and IWUWBS 2004 |
| Place of Publication | Piscataway, NJ |
| Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| Pages | 400-404 |
| Number of pages | 5 |
| ISBN (Print) | 0780383737, 9780780383739 |
| Publication status | Published - 2004 |
| Externally published | Yes |
| Event | 2004 International Workshop on Ultra Wideband Systems; Joint with Conference on Ultra Wideband Systems and Technologies, Joint UWBST and IWUWBS 2004 - Kyoto, Japan Duration: 18 May 2004 → 21 May 2004 |
Other
| Other | 2004 International Workshop on Ultra Wideband Systems; Joint with Conference on Ultra Wideband Systems and Technologies, Joint UWBST and IWUWBS 2004 |
|---|---|
| Country | Japan |
| City | Kyoto |
| Period | 18/05/04 → 21/05/04 |
Keywords
- 3-D position estimation
- DFP formula
- Direct calculation
- Time of arrival
- UWB