Title :
Indirect Localization and Imaging of Objects in an UWB Sensor Network
Author :
Hirsch, Ole ; Janson, Malgorzata ; Wiesbeck, Werner ; Thomä, Reiner S.
Author_Institution :
Inst. fur Informationstechnik, Tech. Univ. Ilmenau, Ilmenau, Germany
Abstract :
A method for the localization and the rough 2-D microwave imaging of objects is described. It detects and utilizes line-of-sight (LOS) paths between a mobile node and several fixed nodes of a distributed ultrawideband (UWB) sensor network. Objects are imaged in an indirect way, i.e., by a combination of maps, which show the distribution of LOS paths of individual network nodes. The method is demonstrated by means of ray-tracing simulations and measurements in a realistic environment. Performance limitation by diffraction and the question of temporal network node synchronization are discussed.
Keywords :
microwave imaging; ray tracing; synchronisation; ultra wideband communication; wireless sensor networks; UWB sensor network; distributed ultrawideband sensor network; indirect localization; line-of-sight paths; microwave imaging; objects imaging; ray-tracing simulations; temporal network node synchronization; Apertures; Diffraction; Image edge detection; Imaging; Mobile communication; Radar imaging; Localization; microwave imaging; sensor network; ultrawideband (UWB);
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2010.2046359
