September 2001 | Technical Report NTIA TR-01-389
Addendum to NTIA Report 01-384: Measurements to Determine Potential Interference to GPS Receivers from Ultrawideband Transmission Systems
Cite This Publication
J. Randy Hoffman, Michael G. Cotton, Robert J. Achatz, and Richard N. Statz, “Addendum to NTIA Report 01-384: Measurements to Determine Potential Interference to GPS Receivers from Ultrawideband Transmission Systems,” Technical Report NTIA TR-01-389, U.S. Department of Commerce, National Telecommunications and Information Administration, Institute for Telecommunication Sciences, September 2001.
J. Randy Hoffman, Michael G. Cotton 
, Robert J. Achatz , and Richard N. Statz
Abstract:
This addendum to NTIA Report 01-384 describes laboratory measurements on two additional Global Positioning System receivers to quantify the effects of ultrawideband interference on those receivers. The laboratory measurements were performed by inserting increased levels of UWB interference until an operating GPS receiver lost lock. At each interference level leading up to loss of lock, reacquisition time was determined. When possible, fundamental GPS measurements (e.g., pseudorange and carrier phase), status flags (e.g., potential cycle slips), and signal-to-noise ratio were also sampled.
Keywords: global positioning system (GPS); noise; ultrawideband (UWB); Impulse Radio; interference measurement; radio frequency interference (RFI); amplitude probability distribution
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cdietlein@ntia.gov
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