电测与仪表
電測與儀錶
전측여의표
ELECTRICAL MEASUREMENT & INSTRUMENTATION
2014年
2期
86-90
,共5页
TEM信号%信号质量%畸变因子%期望拟合率
TEM信號%信號質量%畸變因子%期望擬閤率
TEM신호%신호질량%기변인자%기망의합솔
TEM signal%signal quality%distortion factor%expected fitting degree
瞬变电磁法（TEM）是探测地下介质电性参数信息的重要方法。针对TEM发射机的发射电流信号质量定量分析的问题，本文详细分析了发射信号的各参数对观测结果的影响，并且提出了测量发射信号质量的算法，实现了对电流信号的各阶段时间、电流值、期望直线拟合度、关断率、过冲率等质量参数的测量。最后，设计了一套基于DSP的TEM发射信号质量测量系统。大量实验表明，该测量方法行之有效，满足对TEM发射信号的质量评价，具有很强的工程实用性。
瞬變電磁法（TEM）是探測地下介質電性參數信息的重要方法。針對TEM髮射機的髮射電流信號質量定量分析的問題，本文詳細分析瞭髮射信號的各參數對觀測結果的影響，併且提齣瞭測量髮射信號質量的算法，實現瞭對電流信號的各階段時間、電流值、期望直線擬閤度、關斷率、過遲率等質量參數的測量。最後，設計瞭一套基于DSP的TEM髮射信號質量測量繫統。大量實驗錶明，該測量方法行之有效，滿足對TEM髮射信號的質量評價，具有很彊的工程實用性。
순변전자법（TEM）시탐측지하개질전성삼수신식적중요방법。침대TEM발사궤적발사전류신호질량정량분석적문제，본문상세분석료발사신호적각삼수대관측결과적영향，병차제출료측량발사신호질량적산법，실현료대전류신호적각계단시간、전류치、기망직선의합도、관단솔、과충솔등질량삼수적측량。최후，설계료일투기우DSP적TEM발사신호질량측량계통。대량실험표명，해측량방법행지유효，만족대TEM발사신호적질량평개，구유흔강적공정실용성。
Transient electromagnetic method (TEM) is an important way to detect subsurface electrical parameters. To address the problem of quantitative analysis on TEM emitting signal,this paper analyses in detail the influence of TEM emitting signal parameters on observation result, and proposes an algorithm to evaluate TEM emitting signal quality, which realizes the measurement of time, current value, expected line fitting degree, shut-off rate, overshoot rate, and so on. At last, a measurement and analysis system of TEM emitting signal based on DSP platform is designed. Experiments show that the method is effective, satisfied the evaluation of TEM emitting signal, and is highly practical in engineering.
