Subscriber based TDOA location techniques for the Motorola iDEN system

This paper discusses development of the technology required to enable location services on Motorola's iDEN cellular phone system. Our approach consists of handset based time difference of arrival (TDOA) measurement. The performance of this system has been determined both by computer simulation...

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Bibliographic Details
Main Authors: Birchler, M., Jasper, S., Oros, N., Jones, D., Makhlouf, S., Tziortzis, A.
Format: Conference Proceeding
Language:English
Subjects:
Equations
Interference
Least squares methods
Matched filters
Noise measurement
Radio transmitters
Receivers
Signal resolution
Time measurement
Timing
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Summary:This paper discusses development of the technology required to enable location services on Motorola's iDEN cellular phone system. Our approach consists of handset based time difference of arrival (TDOA) measurement. The performance of this system has been determined both by computer simulation and field trials. The overall TDOA system and specific algorithms utilized are described. Performance estimates for numerous special cases are discussed. These cases include highway, in-building, and coverage fringe. Particular attention is paid to the effects of propagation environments (e.g., urban, rural, etc.) on accuracy performance. In addition, bench test and field test performance data is reported and compared to computer simulation predictions.
DOI:10.1109/AIWORC.2000.843296