摘要
浅地层剖面仪(GeoChirpⅡ)是英国GeoAcoustics Ltd生产的一种浅地层剖面仪,该仪器采集的原始数据以二进制形式保存在SEYG型数据文件中。为了读取该仪器记录的原始数据,除了解数据文件的记录格式外,最关键的一步是获取数据文件的重要参数(如道数、点数、数据样点格式等)。这里研究了浅地层剖面仪(GeoChirpⅡ)的SEYG型数据文件的格式,在难以按照常规方式获取重要参数的情况下,首先充分利用GeoPro软件上显示的相关信息获取了剖面的道数及每道的采样点个数等重要参数,数据样点格式则根据说明书确定。然后利用所获取的重要参数编写相应程序以读取该数据文件的原始数据及把处理过的数据写成SEYG型数据文件,数据处理实例则证实了该方法可有效读取原始数据和写入目标数据。最后对读取GeoChirpⅡ的SEYG型数据文件过程中遇到的问题作了初步探讨。
GeoChirp Ⅱ is one of the sub-bottom profiler made by GeoAcousetics Ltd company in Britain.The original data acquired by GeoChirp Ⅱ sub-bottom profiler are currently stored in SEGY data files as binary system.To acquire the original data,the key issue is to gain the important parameters(trace number,sample number,format of data) besides the format of SEGY data file.In this paper,format of SEGY data file in GeoChirp Ⅱ is studied.In the case of the important parameters can not be acquired by conventional methods,firstly,relevant information showed in GeoPro is fully used to obtain the important parameters such as trace number,sample number,and the format of data is known according to GeoPro Mannual.Then the program is written to read the original data from SEGY data files and store the processed data into it.The validity of this method is verified by a field example.At last,the paper simply discusses the problems appeared in the processing of acquirement original data from data file of GeoPro Ⅱ.
出处
《物探化探计算技术》
CAS
CSCD
2007年第3期273-275,182,共3页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家自然科学基金重点项目(40231010)
国家自然科学基金项目(40476041)
