拖缆地震勘探导航首线质量控制方法探讨

First Line Quality Control(FLQC)research for marine navigation

拖缆地震勘探过程涉及到的导航设备种类多,观测数据格式复杂,如何对导航观测数据进行有效的质量控制,是工程难点和本文重点内容之一。通过对拖缆地震勘探导航数据采集全过程的研究分析,借鉴国际经验,对导航首线质量控制的方法进行探讨。该方法是在完成第一条测线数据的采集之后,根据导航原始观测数据文件,对导航原始数据文件格式、项目设备配置参数、导航数据完整性以及导航数据质量进行检查,以达到对导航观测数据有效的质量控制。

There are many kinds of marine seismic navigation equipment,and the format of observation data is complex.To make sure all the data can be used in the positioning,navigation data must be checked carefully.Based on the research of the navigation acquisition process,a method of First Line Quality Control（FLQC）has been proposed.At the end of the first line,navigation data provided by the fleet has been inspected in accordance with the principle of FLQC.It has a good guiding significance for future work.