Study of the suitable coverage area for digital terrestrial television broadcasting service | |
| Author | Kikumura, Hajime |
| Call Number | AIT Thesis no.TC-10-10 |
| Subject(s) | Digital television Television broadcasting |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Telecommunications |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. TC-10-10 |
| Abstract | The most important problem facing people in ASIAN today is to establish proper massmedia to develop their own countries. Digital Terrestrial Television Broadcasting (DTTB) is a trend in the world. There is movement to introduce digital terrestrial television coverage. This thesis summarizes the results of study to develop a suitable methodology to generate digital terrestrial television coverage area map based on the ASTER GDEM using GIS. We would like to explain three important points on this thesis: the coverage area of one-wave model (1WM), reflection point (Pr) and the expansion of the one-wave model coverage. The coverage area for one-wave model (1WM) includes only direct television radiation wave. We have completed successfully to draw the design using the program of MATLAB with ENVI. This coverage area is made by adding 1 profile for 1 degree, resulting in 360 profiles. We have simulated the coverage area map of the BBTV, Bangkok Broadcasting Television, of Chiang Mai station with Electric Field Strength 34.5 μV/m or 90 dBμ in 50 km area. The reflection point (Pr) in the 1WM area is important to obtain more receiving power. We need to set up the condition of the Pr. Assuming that Slope_5 and Spike_20 mean the area less than 5 degrees and the area less than 20m up and down, respectively, the raster data of the Slope_5 and Spike _20 were obtained using ERDAS Image. However, the point of Pr could not be found in detail. We must develop some filters separately to find whether it is truly Pr or not, and scanner to find the Pr point in the area of Slope_5, Spike_20 and 1WM. By expanding the 1WM, we expect to be able to create a useful tool to design the coverage area since the new coverage area can be easily achieved from 1WM by changing the parameters such as the height of antenna of transmitter or receiver and the distance between them. In addition, the original source data is obtained from the satellite image data, and the coverage area map is kept in GIS format, therefore, it is easy to maintain and share. |
| Year | 2010 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. TC-10-10 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Teerapat Sanguankotchakorn |
| Examination Committee(s) | Honda, Kiyoshi;Ahmed, Kazi M. |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2010 |