TY  - JOUR
PY  - 2014//
TI  - Robust sensing of approaching vehicles relying on acoustic cues
JO  - Sensors (Basel)
A1  - Mizumachi, Mitsunori
A1  - Kaminuma, Atsunobu
A1  - Ono, Nobutaka
A1  - Ando, Shigeru
SP  - 9546
EP  - 9561
VL  - 14
IS  - 6
N2  - The latest developments in automobile design have allowed them to be equipped with various sensing devices. Multiple sensors such as cameras and radar systems can be simultaneously used for active safety systems in order to overcome blind spots of individual sensors. This paper proposes a novel sensing technique for catching up and tracking an approaching vehicle relying on an acoustic cue. First, it is necessary to extract a robust spatial feature from noisy acoustical observations. In this paper, the spatio-temporal gradient method is employed for the feature extraction. Then, the spatial feature is filtered out through sequential state estimation. A particle filter is employed to cope with a highly non-linear problem. Feasibility of the proposed method has been confirmed with real acoustical observations, which are obtained by microphones outside a cruising vehicle.<p />  <p>Language: en</p>
LA  - en
SN  - 1424-8220
UR  - http://dx.doi.org/10.3390/s140609546
ID  - ref1
ER  -