海上地震勘探拖缆定位数据处理系统设计与实现

拖缆定位数据处理系统是海上拖缆地震勘探综合导航系统的核心,为满足拖缆高精度定位应用需求,根据DGPS、RGPS、声学距离、罗经鸟方位角等多种导航定位传感器数据的特点,研究了拖缆高精度定位平差处理算法与处理流程等关键技术,设计了基于滑动窗口的观测数据存储结构和基于国际标准数据格式P2/94的类结构,使用C++语言开发实现了拖缆定位数据处理系统。海试结果表明,该系统的定位精度和性能达到了国际先进海上地震勘探导航定位产品的水平。

Design and realization of a precise positioning system for offshore towed-streamer seismic exploration

The streamer positioning data processing system is the core of the integrated navigation system for offshore towed-streamer seismic exploration.To meet the requirements of precise positioning,according to the characteristics of DGPS,RGPS,acoustic distance,compass azimuth,and other navigation and positioning sensor data,the key technologies such as the streamer high-precision positioning adjustment algorithm and data processing flow are studied,the observation data storage structure based on sliding window and the class structure based on the international standard data format P2/94 are designed,and the streamer positioning data processing system is developed using C++.The sea trial results show that the positioning accuracy and performance of the system have reached the level of international advanced marine seismic exploration navigation and positioning products.