Transmission of ASCII code messages using a high power (50mW) underwater laser communication prototype in two controlled scenarios
DOI:
https://doi.org/10.47187/perspectivas.7.1.207Keywords:
Prototype, Underwater, Communication, Power, Voltage, DistanceAbstract
This article offers the development of an underwater communication prototype using a long-range laser (50mW) to find the maximum range of the prototype underwater and the value of the attenuation or power of the received signal as the distance increases. For this purpose, two underwater test scenarios were chosen. In the first scenario (a fish tank) two received signal power measurements were made using the KEYSIGHT Infinii Vision DSOX2022A oscilloscope and in the second scenario (a swimming pool) two measurements were also made. With the data obtained, a graphical analysis of the behaviour of the received signal power was performed. Finally, it is concluded that the maximum range of the prototype underwater is 12m (for distances greater than 12m the laser does not reach the receiver), information is lost or distorted if there is water movement because the particles of the moving water reflect the laser much more and that for the prototype to work both the transmitter and the receiver must be perfectly aligned otherwise the underwater communication will not be established.
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