Salom Iva, Dimić Goran, Čelebić Vladimir, Spasenović Marko, Raičković Milica, Mihajlović Mirjana, Todorović Dejan
Institute Mihailo Pupin, University of Belgrade, Volgina 15, 11060 Belgrade, Serbia.
Center for Microelectronic Technologies, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia.
Sensors (Basel). 2023 Jan 12;23(2):880. doi: 10.3390/s23020880.
Airborne acoustic surveillance would enable and ease several applications, including security surveillance, urban and industrial noise monitoring, rescue missions, and wildlife monitoring. Airborne surveillance with an acoustic camera mounted on an airship would provide the deployment flexibility and utility required by these applications. Nevertheless, and problematically for these applications, there is not a single acoustic camera mounted on an airship yet. We make significant advances towards solving this problem by designing and constructing an acoustic camera for direct mounting on the hull of a UAV airship. The camera consists of 64 microphones, a central processing unit, and software for data acquisition and processing dedicatedly developed for far-field low-level acoustic signal detection. We demonstrate a large-aperture mock-up camera operation on the ground, although all preparations have been made to integrate the camera onto an airship. The camera has an aperture of 2 m and has been designed for surveillance from a height up to 300 m, with a spatial resolution of 12 m.
机载声学监测将使多种应用成为可能并更加便捷，包括安全监控、城市和工业噪声监测、救援任务以及野生动物监测。在飞艇上安装声学摄像头进行机载监测，将提供这些应用所需的部署灵活性和实用性。然而，对于这些应用来说存在一个问题，即目前还没有一个安装在飞艇上的声学摄像头。我们通过设计和制造一个可直接安装在无人机飞艇船体上的声学摄像头，在解决这个问题上取得了重大进展。该摄像头由64个麦克风、一个中央处理器以及专门为远场低电平声学信号检测开发的数据采集和处理软件组成。尽管已经做好了将摄像头集成到飞艇上的所有准备工作，但我们在地面上展示了一个大孔径样机摄像头的运行情况。该摄像头孔径为2米，设计用于从高达300米的高度进行监测，空间分辨率为12米。
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