近年来,上海电视事业飞跃发展,完成了电视广播的全部彩色化。今年,上海观众将可以选看四个电视频道,电视节目播出时间不断增加。市区继黑白电视机普及之后,现在彩色电视机数量也在高速发展。随着农村经济的发展,电视机在农村的普及速度也加快。收看电视已成为城乡人民每天生活和学习中不可缺少的部分,是获得各种信息的重要途径。电视广播也是党和政府最重要的宣传工具之一。但是,现在上海地区收看电视还存在各种困难,在远郊区,电波场强太弱,在市区,图象重影多,在被楼房阻挡的阴影区或背朝电视台的大楼很难收看到清晰的 In recent years, the development of Shanghai’s TV industry has leapfrogged and completed the full colorization of television broadcasting. This year, Shanghai audiences will be able to choose between four television channels, and the duration of the airing of television programs will continue to increase. Following the popularity of black and white television in urban areas, the number of color television sets is now growing rapidly. With the development of rural economy, the popularization rate of TV in rural areas also accelerated. Watching TV has become an indispensable part of everyday life and study in urban and rural areas, and an important way to obtain all kinds of information. Television broadcasting is also one of the most important propaganda tools for the party and government. However, there are still various difficulties in watching television in Shanghai. In the outer suburbs, the radio field is too weak. In the urban areas, there are many image ghosting. It is difficult to see in the shadow areas blocked by buildings or the buildings facing back to the TV stations clear