The cellular digital packet data (CDPD) is a system which borrows idle radio channels from the existing cellular mobile telephone networks for packet data transmission.
蜂窝数字分组数据(CDPD)是利用现有的模拟蜂窝电话网来传输数据的一种新技术。
Divided according to the functions, the hardware of the submersible buoy digital acquisition and storage system is mainly composed of three parts: signal acquisition, data storage, data transmission.
潜标数字处理系统的硬件部分按功能划分主要包括三个部分：信号采集，数据存储和数据传输。
Methods an ARM embedded system was used to achieve data transmission by implementing serial communication with GPS module, Beidou receiver and wireless digital broadcasting station.
方法：采用ARM嵌入式系统，并与G PS模块、北斗接收机和数传电台进行串口通信，实现数据的传输。
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