B码设备中的GPS时间信号接口

ＰＯ９７型ＧＰＳ／Ｂ码解调器把ＧＰＳ技术融入Ｂ码设备中，用于自动定时定位和精密时间同步。该设备的ＧＰＳ时码接口解出ＧＰＳ时间信号，并同步所有的时标信号和时间码信号。主要介绍了该接口的硬件和软件的实现过程。

A New Interface of GPS Time Signal in B code Device

PO97 type of GPS-B code device introduces GPS technology into B decode device, which is used for automatic timing, positioning and precise time synchronization. The interface equipment receives time signal from GPS receiver, decodes, synchronizes and creates various practical time signal. The structure and working process of this device are described in this paper. Fig.1 shows a part of circuits of the main device and the interface equipment. Fig.2 and 3 give the flow charts of the interrupt programs in the software. They work together to decode the time code, realize synchronization them and output time signals.