随着四级办广播、四级办电视、四级混合覆盖方针的不断落实,各级广播电台、电视台、有线广播站迅猛发展,每一台、站的每套节目都要有它的覆盖网。随着事业建设的发展,这些覆盖网会越来越大,要使各台、站的节目都能经济有效地覆盖,就必须有一良好的覆盖规划,否则往往事倍功半。因此,广播电视覆盖规划的优化是广播电视软科学的重要研究课题之一。 With the four radio stations, four television stations, four mixed coverage of the continuous implementation of the policy, all levels of radio and television stations, cable broadcasting station rapid development, each station, each station must have its coverage network . With the development of business development, these coverage networks will be more and more large. To ensure the coverage of all stations and stations economically and effectively, it is necessary to have a good coverage plan. Otherwise, the coverage will be less effective. Therefore, the optimization of radio and television coverage planning is one of the important research topics in soft science of radio and television.