NDLI: Cooperative Multi-User Detection and Localization for Pedestrian Protection

Content Provider	IEEE Xplore Digital Library
Author	Morhart, C. Biebl, E. Schwarz, D. Rasshofer, R.
Copyright Year	2009
Description	Author affiliation: BMW Group Research and Technology, 80992 Munich, Germany, Email: daniel.schwarz@bmw.de (Schwarz, D.) \|\| BMW Group Research and Technology, 80992 Munich, Germany (Rasshofer, R.) \|\| Technische Universität München, Fachgebiet Höchstfrequenztechnik, 80290 Munich, Germany (Biebl, E.) \|\| Technische Universität München, Fachgebiet Höchstfrequenztechnik, 80290 Munich, Germany, Email: morhart@tum.de (Morhart, C.)
Abstract	In the proposed cooperative sensor system pedestrians carry a reactive transceiver which is interrogated by a localization and tracking unit in the car. The prototype system applies Round-Trip Time-of-Flight (RTOF) echniques for the determination of the distance between the transponder and the demonstrator vehicle. A smart antenna array integrated into the car is used to determine the Direction-of-Arrival (DoA) of the transponder's response signal. Knowing the distance and azimuth angle relative to the car, the pedestrian's position and movement are calculated. These data are used as input for a highly reliable collision warning and collision mitigation system. The sensor system is capable of addressing a huge number of communication partners within each measurement cycle. Additionally secure burst identification is ensured for a robust localization and the suppression of unwanted co-channel interference. This is achieved by using pseudo random coded signals with a Time Division Multiple Access (TDMA) method. The distance accuracy was improved by introducing a new mirror technique in combination with an interpolation algorithm. The prototype localization system set up at 2.4GHz covers a range up to 200m in free field condition. With the current system a distance resolution down to cm and an angular measurement accuracy of about 1 degree have been achieved.
Starting Page	1
Ending Page	5
File Size	136534
Page Count	5
File Format	PDF
ISBN	9783981266801
DOI	10.1109/GEMIC.2009.4815863
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-03-16
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiuser detection MUSIC Round-Trip Time-of-Flight Kalman-Filter Sensor systems Transceivers Cooperative Sensor Technology Transponders Vehicles Time division multiple access Direction-of-Arrival Prototypes Directive antennas Protection Time Division Multiple Access Antenna arrays
Content Type	Text
Resource Type	Article

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