Title :
Time synchronization for Real Time Localization Systems with multi path mitigation
Author :
Marx, Michael ; Kokozinski, Rainer ; Muller, Hans-Christan
Author_Institution :
Fraunhofer Inst. for Microelectron. Syst., Duisburg, Germany
Abstract :
Accurate localization systems, based on the measurement of the time of flight of a signal between radio devices, also known as real time location systems (RTLS) are becoming increasingly important especially in indoor applications. Due to severe multi path conditions, the largest problem for those RTLS systems is to detect the time of arrival of signals traveling over the direct line of sight path. We present issues of an new high resolution direct path tracker (HRDPT) architecture, that allows an efficient hardware implementation of a high resolution method for multi path mitigation, and demonstrate first results.
Keywords :
indoor radio; synchronisation; high resolution direct path tracker; multipath mitigation; real time localization systems; signal time-of-arrival; time synchronization; Amplitude modulation; Delay effects; Delay estimation; Hardware; Maximum likelihood estimation; Propagation delay; Real time systems; Signal resolution; Spatial resolution; Spread spectrum communication; Localization; Multi path mitigation; Positioning; RTLS;
Conference_Titel :
Wireless Sensing, Local Positioning, and RFID, 2009. IMWS 2009. IEEE MTT-S International Microwave Workshop on
Conference_Location :
Cavtat
Print_ISBN :
978-1-4244-5060-2
Electronic_ISBN :
978-1-4244-5062-6
DOI :
10.1109/IMWS2.2009.5307881