一个标准时间信息码由广播电台传送,是有许多优点:复盖面积比较大,不要建立专门的标准时间发播台,使用低价接收机和简单解码器,可以获得较高时间同步和校频精度。文中介绍了目前广播电台报时信号形式。编码时间信号采用“PSK”调制形式,主要目的满足不同用户的需要。解码器采用匹配滤波器,以便获得最佳接收。 A standard time information code transmitted by a radio station has many advantages: coverage area is relatively large, do not set up a special standard time transmitting station, the use of low-cost receivers and simple decoder, you can get a higher time synchronization and frequency Accuracy. The paper introduces the current broadcast signal timing mode. The encoding time signal adopts “PSK” modulation form, the main purpose is to meet the needs of different users. The decoder uses a matched filter to get the best reception.