| With the successful broadcast of digital television channel domestically, digital TV is permeating through thousands of families, bringing high-level visual and auditory enjoyment, and diversifying the daily life of people. Due to the construction of digital TV transmission system mainly faces cities and doesn't cover countryside and outlying districts, it's critical to analyze another kind of digital TV transmission system which is economical and suitable for outlying districts. In the existing documents, there are many studies on HFC digital network and the operation and service of digital TV. Though the study on the reconstruction of the founded analogue microwave transaction network seldom can be found. The study should be pay more attention, not only because the expectation of more digital TV's users, but also because the exploration of broader digital TV market space.According to the practical project of Taian Broadcast and TV Bureau and the realistic operation and present technology of Taian TV station, the thesis proposes the technical formula of digitalizing the present analogue microwave transaction facilities which is based on the technology of digital TV microwave transmission, studies some critical technologies concerning digital TV microwave transmission, designs a low-cost microwave transmission system based on the careful analysis and calculation, and realizes the demand for long-distance transmission of several packages of digital TV program and broadcast program. The effect of the formula's application is very good, and the application of the formula solves the problem of receiving television and broadcast program in remote and scattered regions. |
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