【摘要】 根据井眼轨迹闭环控制系统的实现要求，讨论地面信号下传系统的基本构成和信号的传输方式，提出信号的编码方法、传输格式以及码型，考虑到信号传输的可靠性和传输系统的效率，建立了具有可选参数功能的控制信号编码系统，为地面信号下传系统提供理论基础和技术依据，对加速随钻测量技术的国产化进程起到积极地促进作用。更多还原

【Abstract】 According to the accomplished claims for the closed loop control system of wellbore trajectory,the general components of downward signaling system and the signal transmission modes are discussed in this paper.The coding method,the transmission pattern and the code form of signal are presented.As a result,a coding system of control signals,which is provided with optional parameter function,is formed considering the reliability of signal transmission and the efficiency of transmission system.更多还原