Archives of Acoustics, 42, 4, pp. 761–765, 2017

Prototype of Wideband Air Sonar Based on STM32

Military University of Technology

Adam Marian KAWALEC
Military University of Technology

Bartłomiej Łukasz FĄFARA
Military Institute of Armament Technology

The paper presents a project of a low-cost prototype version of a wideband air sonar and the problems occurring during its development process. The aim of this work was to design a short range air sonar capable of creating the reflectivity map of its surroundings using an arbitrary shape wideband signal. The transmitting and receiving transducers that have been chosen for this application typically work in pulsed operation modes. Therefore, dedicated output and input circuits had to be designed to expand its capabilities without information losses. The signal generation, transmission, reception and storage are managed by a Discovery evaluation board with a STM32 microcontroller. The receiving data are saved on a SD card and are processed off-line.
Keywords: imaging air sonar; STM32; ultrasonic transducer
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DOI: 10.1515/aoa-2017-0079

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