Target Detectability Using Coded Acoustic Signal in Indoor Environments
Target Detectability Using Coded Acoustic Signal in Indoor Environments
复制标题
在室内环境中使用编码声学信号进行目标探测
DOI:
10.1143/jjap.47.4325
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发表时间:
2008
影响因子:
1.5
通讯作者:
H. Hachiya
中科院分区:
文献类型:
--
作者:
H. Matsuo;Tadashi Yamaguchi;H. Hachiya
An acoustic method in air has the potential to allow for the fast and accurate characterization of objects in air. Nevertheless, it is difficult to identify acoustic signals clearly because of environmental noises and the scattering of signals on the object surface. Therefore, it is required to establish a sensing system, which enables measurements in air. In this paper, we present the object detection using an M-sequence signal in an indoor environment. Using the M-sequence signal enabled the improvement in signal-to-noise (SN) ratio and the stable measurement of reflected waves that cannot be detected using a conventional impulse. The noise and reverberation components are included in the received signals and reflected waves from the target. We confirmed that in the case of a high-order M-sequence signal, target detectability is limited by reverberation. In addition, we eliminated the reverberation component from the received signals using the signals without the target in the reverberation limited case and determined the reflection characteristics of the target.
DOI:
--
发表时间:
2005
期刊:
Japanese Journal of Applied Physics Vol.44, Part 1, Mo. 6B
影响因子:
--
作者:
Kousuke Kudo;Koichi Mizutani and Kazuya Itoga
通讯作者:
Koichi Mizutani and Kazuya Itoga
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
Satoshi Kawabe;Koichi Mizutani
通讯作者:
Koichi Mizutani
DOI:
--
发表时间:
2006
期刊:
Jpn. J. Appl. Phys 45・5B
影响因子:
--
作者:
K.Sasaki;M.Nishimura;K.Imano
通讯作者:
K.Imano