智能化MT测深仪数据的校正方法

Data Correction to Intelligent MT Instrument

进行国家深部探测专项SinoProbe—01子项的研究工作,需要借助于长周期MT测深仪器。目前,我国没有自己设计生产的该类仪器,在使用进口仪器LEMI—417中,发现系统存在无GPS信号时,时间记录紊乱的现象;此外,操作员因各种原因接错电道、磁道信号线或参数输入错误导致的记录错误,应予以纠正。因此,设计了适合课题需要的长周期大地电磁测深仪器。为解决无GPS会出现记录紊乱的问题,系统中增加了GPS和RTC电路模块,并将时间信息加入到采集的数据中,从而根据数据中的时间信息判断是否有数据丢失现象,并利用线性插值算法进行弥补。为解决人为因素造成的信号线接错或参数输入错误,对错误进行了分类与数字化,设计了校正对话框,使用户在对话框中选择错误类型后,程序自动完成纠正。该功能成功纠正了在1615等测点采集数据时的误操作。

Long period MT instrument is used in the implementation of the project ＂Deep Exploration Technolo- gy and Experimentation （SinoProbe）＂ in China. China can not make long period MT instrument by itself now, therefore our group team use LEMI-417 which is imported from Ukraine to acquire data. During the using of LE- MI-417, that data recording errors occurred in LEMI-417 were found and the factors produced the errors include two aspects： one is made by the instrument, such as data recording without GPS, and the other is made by the op- erator, such as the operator connecting the signal line by mistake. Thus, a long-period MT instrument was designed to solve the problems. In order to solve the errors made by the instrument without GPS signal, firstly GPS and RTC module are added to the instrument system and the time information is added when acquiring to the acquired data; secondly, whether there is data loss in the acquired data according to the time information of the acquired data, fi- nally, the data loss are compensated with linear interpolation algorithm. In order to solve the errors made by the op- erators, the errors are classified and digitezed, a correction dialog box was designed for operator inputting his error, and a program was made with C＋＋ to correct the error automatically. The function corrected the error of the ac- quired data in 1 615 point successfully.