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http://dx.doi.org/10.5909/JBE.2014.19.3.372

Measurement of Vertical-Directional DTV Signal Level Using a Multi-Copter  

Park, Hyung-Do (Dept. of Electronics and Computer Engineering, Chonnam National University)
Lim, Sol (Dept. of Electronics and Computer Engineering, Chonnam National University)
Kim, Dae Jin (Dept. of Electronics and Computer Engineering, Chonnam National University)
Publication Information
Journal of Broadcast Engineering / v.19, no.3, 2014 , pp. 372-384 More about this Journal
Abstract
DTV field tests have been performed to measure field strength and to check reception ratio on indoor and outdoor sites. They use an antenna of 9m to measure DTV signal in case of outdoor measurement on the road. Modern skyscrapers require the analysis of vertical-directional wave propagation by measuring vertical-directional DTV signal. Even if the field strength is above the reception threshold of $43dB{\mu}V/m$, the reception is impossible in case of strong multi-path or high impulse noise. So, vertical-directional field measurement is essential in environment of tall buildings. In this paper, we developed an octo type multi-copter to measure vertical-directional DTV signal level. A compact and portable DTV signal level meter, an antenna, a microwave transmitter for data transmission, and a recording equipment are equipped in the multi-copter. Three different sites are selected to test the measurement system. Developed measurement system using the multi-copter is very useful in measuring vertical-directional DTV signal, especially in apartments, non-accessible area by vehicles, and forbidden areas.
Keywords
DTV field test; DTV signal level; vertical-direction; multi-copter; non-accessible area;
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Times Cited By KSCI : 2  (Citation Analysis)
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