测井技术2017，Vol.41Issue(5)：567-570,4.DOI:10.16489/j.issn.1004-1338.2017.05.014
测井电缆衰减特性拟合及其电路建模
Fitting and Circuit Modeling to the Attenuation Characteristics of Logging Cable
摘要
Abstract
In order to get an early understanding about data transmission effect through logging cable,a lumped parameter circuit is often used to simulate the actual cable as signal transmission medium when a newly developed instrument implementing the indoor experiment.a 7 000 m seven-core logging cable with connection mode 7 is taken as the object of study.Based on the signal attenuation measurement at the discrete points of each frequency,the analysis formula to the transfer function of this cable is obtained by the nonlinear fitting method,and a physically achievable circuit model is thus established.Not only with simple circuit structure,this model also shows good fitting effect to the original cable attenuation characteristics through simulation results.The simulated circuit design method can provide reference for the design of various data transmission cable simulators with different types or lengths.关键词
测井电缆/信号衰减特性/传递函数/非线性拟合/电路模型Key words
logging cable/signal attenuation characteristic/transfer function/nonlinear fitting/circuit model分类
天文与地球科学引用本文复制引用
闫景富,邹庆言,刘得军..测井电缆衰减特性拟合及其电路建模[J].测井技术,2017,41(5):567-570,4.基金项目
国家重大科研装备研制项目(ZDYZ2012) （ZDYZ2012）
