Performance and optimization of pulsed UWB localization with large number of sources Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/nc580r01v

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  • Pulsed ultra-wideband (UWB) radio uses extremely short pulses to transmit information. Such pulses provide very fine timing information, which has led to technological advances in high-precision localization. This thesis focuses on techniques and experiments of Time-Difference-of-Arrival (TDOA) localization of a large number of simultaneous sources. First, common localization techniques such as Received Signal Strength (RSS), Angle of Arrival (AOA), Time of Arrival (TOA), and TDOA are reviewed. It is concluded that TDOA method is best suited for the target application - localization of a large number of targets/sources all required to have simple hardware/software. Then, an algorithm to select a subset of Gold codes from the complete set of a certain code length is developed for minimum mutual interference. This optimized subset of codes is used in simulation. Finally, an experiment is conducted in a warehouse. The goal is to detect and localize the desired transmitter with the 'intended' code from a total of 100 active targets. Two different scenarios are studied in the experiment; all transmitters are synchronized (Case 1) and all transmitters are asynchronous (Case 2). For both cases, experimental results have shown that the codes optimized are effective for high-precision localization of a large number of simultaneous sources.
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  • description.provenance : Made available in DSpace on 2012-11-05T18:26:07Z (GMT). No. of bitstreams: 3 license_rdf: 19965 bytes, checksum: 225316337756db2af069c3edfe03a49f (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) KwonChangho2012.pdf: 14327783 bytes, checksum: 14e806852423e8ab23f590f36a08451e (MD5) Previous issue date: 2012-08-22
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  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2012-11-05T18:26:07Z (GMT) No. of bitstreams: 3 license_rdf: 19965 bytes, checksum: 225316337756db2af069c3edfe03a49f (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) KwonChangho2012.pdf: 14327783 bytes, checksum: 14e806852423e8ab23f590f36a08451e (MD5)

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