Potential interference to GPS from UWB transmitters : phase II test results

Details

• Creators:
  Luo, Ming ; Koenig, Michael ; Akos, Dennis ; Pullen, Sam ; Enge, Per
• Corporate Contributors:
  Stanford University
• Subject/TRT Terms:
  • Global Positioning System
  • Wideband communication systems
  • Broadband
  • Noise (Communications)
  • Signals
  • Accuracy
  • Acquisition testing
  • GPS
  • Loss-of-Lock
  • Ultra wideband (UWB)
• Resource Type:
  Research Paper
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Department of Transportation
• Description:
  In 1999, the U.S. Department of Transportation (?DOT?) approached Stanford University to research the compatibility of UWB and GPS and to conduct tests to help quantify any interference problems. This is the second report from Stanford to the Department on this task. This research effort is necessary because GPS has such a pivotal role in so many critical systems that the public depends upon for its safety and
  
  welfare. The majority of the tests measured UWB impact on the accuracy and loss-of-lock performance of a high-grade GPS aviation receiver. A smaller test set measured UWB impact on the loss-of-lock performance for two different receivers, the original aviation
  
  receiver as well as a low-cost OEM receiver. This OEM receiver is similar to the ones that will find application in cell phones and therefore will deliver E-911 location information in accord with the FCC mandate for such service. Finally, a test set was designed to measured UWB impact on the signal acquisition performance of a third
  
  receiver, a high-grade, general-purpose GPS receiver. This third receiver used the same hardware as the aviation receiver, but the firmware was changed so that the receiver did not utilize an acquisition strategy suited for aircraft dynamics.
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/34009/dot_34009_DS1.pdf
• File Type:
  [PDF - 582.67 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:418942b8482455ae6c97f8f0ad07114ac8ca66eb6bc68073405a6eab0859a383