GPS CAPABILITY IN POWER SENSITIVE ITS APPLICATIONS

GPS related ITS applications can perform adequately in even the toughest of conditions such as dense foliage and urban canyons. Current receiver designs draw approximately 150 ma (nominal), but in power saving modes this can be reduced significantly (less than 25 ma) for intermittent updates allowing ultra low power (Trickle Power) applications. This is possible by exploiting the 100 ms signal re-acquisition capability unique to the SiRFstar/LX chipset allowing the GPS receiver to turn off key components once they have completed their task. This ultra low power operation ushers in new opportunities for applications such as asset tracking and fleet management as well as the possibility of long term battery powered applications such as containers, trailers, road side traffic monitoring systems etc, where periodic position information is required. (A) For the covering abstract see IRRD E102826.

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  • English

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Filing Info

  • Accession Number: 00779472
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-7680-0458-6
  • Files: ITRD
  • Created Date: Dec 7 1999 12:00AM