A sample of correction for the model used predicating digital television signals in urban area

In the plan for digital television, whether the model for predicating signals could show the propagation situation exactly or not in plan area will influence the accuracy of results seriously. In order to improving the accuracy of planning, based on the comparison and analysis of statistics between predicating and practically-measured with the help of simulation calculations, the parameters of propagation model can be corrected, which can narrow the predication error greatly. By a specific simulation sample, this paper shows a method for correctionofthe predication model, as well as its effect on narrowing predication error and improving the accuracy of predication.