海上多源多缆地震采集综合导航定位数据处理技术

目前海上三维地震勘探主要以多缆采集为主，对地震船、震源和拖缆等设备进行全方位的精确定位是确保高精度地震采集资料品质的关键所在。介绍了海上多源多缆地震采集综合导航定位网络的配置及其质量评价标准；根据现场工作经验总结提出了一套海上拖缆地震采集综合导航定位数据实时处理和质量控制流程；详细论述了定位数据预处理和网络平差等关键技术环节以及必须把握的准则；进一步讨论了综合导航定位数据现场实时处理可以同时起到的定位参数设置检查修正和水下设备故障分析判断作用。

At present,the offshore 3D seismic survey is mainly operated by towing multi-streamers.One key factors for guaranteeing the quality of seismic data is the high-precision positioning of vessel,source,streamer,etc.The configuration and quality evaluation standard of integrated navigation and positioning network in multi-sources and multi-streamers seismic survey are introduced.A workflow of real-time integrated navigation and positioning data processing and quality control is concluded according to the work experience.The key techniques and rules of navigation and positioning data preprocessing,network adjustment are described.Furthermore,the application of real-time intergrated navigation data processing on auditing of positioning parameters and trouble analysis of the underwater equipment are discussed.