International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California / Pseudolites have been proposed for augmentation/replacement of the GPS system in radiolocation
applications. However, a terrestrial pseudolite system suffers from the near-far effect due to received
power disparities. Conventional code tracking loops as employed in GPS receivers are unable to
suppress near-far interference. Here, a multiuser code tracking algorithm is presented based on the
extended Kalman filter (EKF.) The EKF jointly tracks the delays and amplitudes of multiple received
pseudolite waveforms. A modified EKF based on an approximate Bayesian estimator (BEKF) is also
developed, which can in principle both acquire and track code delays, as well as detect loss-of-lock.
Representative simulation results for the BEKF are presented for code tracking with 2 and 5 users.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/606488 |
| Date | 10 1900 |
| Creators | Iltis, Ronald A. |
| Contributors | University of California |
| Publisher | International Foundation for Telemetering |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Proceedings |
| Rights | Copyright © International Foundation for Telemetering |
| Relation | http://www.telemetry.org/ |
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