Acoustic sensing method for an occlusion area with super-directional sound sources and multiple modulation signal
Acoustic sensing method for an occlusion area with super-directional sound sources and multiple modulation signal
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DOI：
10.35848/1347-4065/abfebe
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发表时间：
2021-07-01
影响因子：
1.5
通讯作者：
Tagawa, Norio
中科院分区：
文献类型：
--
作者：
Koyama, Seiji;Okubo, Kan;Tagawa, Norio
目前，传感技术使用多种信号类型，例如声波、无线电波、光和激光。这项研究的重点是空气中的声学传感，并试图检测遮挡区域中的物体。可听范围内的声波具有较长的波长。波的环绕是由衍射引起的，并且看起来很明显。低频声波可以通过衍射检测隐藏在其他物体后面的物体。本研究通过使用具有多个调制信号的单次传输来研究遮挡区域感测。此外，还提出了一种能够有效识别遮挡区域中的物体的传感系统。将多重调制信号应用于传感系统可以降低传输编码信号的成本。这项研究的结果表明，所提出的方法对于检测遮挡区域中的对象是可行的。
Several signal types such as sound waves, radio waves, lights, and lasers are currently being used for sensing technology. This study focuses on acoustic sensing in air and it attempts to detect an object in an occluded area. Sound waves in the audible range have a long wavelength. The wraparound of waves is caused by diffraction and it appears conspicuously. Low-frequency sound waves can detect objects that are hidden behind other objects via diffraction. This study investigates occlusion area sensing by using a single transmission with a multiple modulation signal. In addition, a sensing system is proposed that can efficiently identify objects in occlusion area. Applying a multiple modulation signal to sensing systems can reduce the cost of transmitting the coded signals. The results from this investigation demonstrate that the proposed method is feasible to detect objects in occlusion areas.