ION Technical Content
Development of a GNSS Odometer
| Abstract: | In view of recent advances towards road pricing and payas- you-drive insurance, the possibility of replacing a traditional odometer by a satellite navigation based system is an interesting option. Such a GNSS odometer allows naturally combining information on the distance traveled with information on location and time and is relatively tamper-proof. Two different approaches to computing the distance traveled from stand-alone GNSS results are discussed herein: (i) computation based on the estimated positions, and (ii) computation based on the estimated velocities. It turns out that the latter approach is more accurate and more suitable for vehicular applications, easily providing the typically required accuracy of 4%. An upper error bound is derived herein as a function of data rate, vehicle dynamics, and standard deviation of the estimated velocity components. It reveals that an accuracy as high as 0.01% may be attainable under line-of-sight conditions using a high-end receiver and advanced processing models. On the other hand, accuracies of 0.1–0.2% are attainable even using consumer-grade receivers and taking into account the effects of GNSS data gaps. In addition to the theoretical investigation, experimental evidence is presented using a dataset obtained on a 300 km road trip which includes tunnels and other sections with limited or no satellite visibility. |
| Published in: |
Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007) September 25 - 28, 2007 Fort Worth Convention Center Fort Worth, TX |
| Pages: | 1466 - 1476 |
| Cite this article: | Wieser, Andreas, "Development of a GNSS Odometer," Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007), Fort Worth, TX, September 2007, pp. 1466-1476. |
| Full Paper: |
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