【摘要】 单芯测井电缆作为测井通信系统的一种重要信道,只有对其的传输性能有足够的理解,才能设计出传输性能优良的测井遥测系统。在双线传输线等效电路及方程的理论基础上,给出了单芯测井电缆特性参数的两种获取手段,然后讨论了单芯测井电缆频率特性的三种研究方法,包括:实测法、建模仿真法和理论计算法。最后,采用不同方法对同一单芯测井电缆的频率特性进行了分析研究,结果表明各种方法均切实可行。采用的分析过程与分析方法对研究有线信道传输特性具有普遍性意义。更多还原

【Abstract】 Single-core logging cable is an important kind of channel in a logging communication system.It is essential to know its transmission properties before the design of an excellent logging telemetry system.Based on the equivalent circuit and equation of two-way transmission line,two kinds of means to get the characteristic parameters of single-core logging cable are given and there research methods for the frequency characteristics of single-core logging cable are discussed.These include actual measurement,modelling simulation,and theoretical calculation.Finally,the frequency characteristics of one single-core logging cable are studied with different methods.The results demonstrate that these methods are all correct and feasible.The analysis process and methods used in this article have universal significance in doing frequency characteristics research of cable channel.更多还原