Investigation of and improvements to a continuous wave radar system for human detection through walls

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dc.contributor.advisorLing, Haoen
dc.creatorSundar Ram, Shobha, 1982-en
dc.date.accessioned2016-03-31T21:11:16Z
dc.date.accessioned2018-01-22T22:29:42Z
dc.date.available2016-03-31T21:11:16Z
dc.date.available2018-01-22T22:29:42Z
dc.date.issued2006-05en
dc.description.abstractA low cost CW radar system with a two element receiving array has been under development for detecting indoor movers using the Doppler and direction of arrival information of the targets. This thesis investigates some research issues and possible improvements to the radar system to improve its operation. First when the CW radar is used in a through wall paradigm it is important to study the channel propagation effects through the complex medium of a wall. Hence narrowband and wideband measurements were conducted to understand some of the wall phenomenolgy such as attenuation and polarization dependence of different walls. The second issue investigated is the jamming of the receiver by the strong coupling from the transmitter that prevents the detection of the weak returns from the target. A circularly polarized microstrip array was designed at 2.4 GHz to reduce this coupling in the bistatic configuration of the CW radar. Third, the Doppler tracks of the different targets contain additional microdopplers due to the arm and leg motion. This makes the simultaneous tracking of multiple targets very difficult. Hence data association algorithms based on Nearest Neighbour Standard Filtering (NNSF) and Probabilistic Data Association (PDAF) algorithms using Kalman Filtering were developed to track the Doppler tracks of multiple targets in the presence of the microdoppler features.en
dc.description.departmentElectrical and Computer Engineeringen
dc.format.mediumelectronicen
dc.identifierdoi:10.15781/T2H785en
dc.identifier.urihttp://hdl.handle.net/2152/34116en
dc.language.isoenen
dc.relation.ispartofUT Electronic Theses and Dissertationsen
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en
dc.rights.restrictionRestricteden
dc.subjectCW radar systemsen
dc.subjectRadar detection through wallsen
dc.subjectDoppler tracksen
dc.titleInvestigation of and improvements to a continuous wave radar system for human detection through wallsen
dc.typeThesisen
dc.type.genreThesisen

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