Diseño e implementación de un sistema de comunicación inalámbrico de larga distancia para transmisión de video vigilancia en tiempo real utilizando vehículo aéreo no tripulado.

Abstract

The objective of the present degree work was to implement a long-distance wireless communication system for the transmission of video surveillance in real-time; therefore, the bibliographic and theoretical foundations were reviewed to understand and determine the technical requirements (operating frequency, transmission power, and channel capacity) for the design of the system and SDR technology was selected as the best alternative for its implementation. Through the LabVIEW software, each of the functional blocks involved in the treatment of multimedia information was implemented and together with the USRP-2932 device, the prototype of the radio communication system was carried out, which was later placed on the Matrice 600 Pro Unmanned Aerial Vehicle. Operation tests were carried out using different modulations, with frames of different resolutions, and under different scenarios of transmission channels, in order to determine the ideal conditions that produce the shortest time of delay in the reception of the frames. The results showed that the delay time is reduced when transmitting low-quality frames, due to the reduced amount of data being transmitted; and it was also found that the delay time is further reduced when using multilevel modulations, due to the high transmission rates they provide. In order to obtain even shorter delay times, it is recommended to use a high processing computer, or it is also recommended to implement the hardware-based prototype that is also proposed in this titration work.