수신환경의 변화에 따른 DTV 유효수신 전계강도에 관한 연구

The Digital TV switchover which brings the extra channels and additional services, is boosted allover the world, therefore Korean government legislates for the special enactment to achievedigital switchover effectively and efficiently. The digital signal is robust unlike analogue signal,which gradually fade the digital signal but, often provides data which is either perfect ornon-existent at the receiving end. So the proper model on blank area and efficient field strengthshould be selected to improve the reception of digital signal.This paper would analyses the blank area of the National Capital Region through the survey onthe field strength for Digital TV. The result shows that under ch 18 and over ch 29 in DigitalTV should be devided, analysing efficient field strength related to urbanization and regionaldevelopment, And Okumura-Hata model as the spectrum model shows 90% accuracy with theresult of field test on field strength.