主要介绍了2004年厦门国际马拉松赛电视直播中移动信号的传输。根据2003年成功直播的经验,提出了以OFDM(正交频分复用技术)数字微波为主,直升飞机中继作为备份的传输方式,实现了移动信号传输全程无盲区。同时利用直升飞机对比赛全程进行航拍,丰富了比赛的画面,极大地提高转播的效果。系统的设计思路和技术方案,可供其他电视台借鉴使用。 Mainly introduced in 2004 Xiamen International Marathon live television transmission of mobile signals. According to the successful experience of direct broadcast in 2003, the digital microwave based OFDM (Orthogonal Frequency Division Multiplexing) technology and the helicopter relay are taken as the backup transmission mode to realize the whole signal transmission without dead zone. At the same time, the use of helicopters for aerial photography throughout the game, enriched the game screen, greatly improving the broadcast effect. System design ideas and technical solutions for other television stations to learn from.