首页 | 本学科首页   官方微博 | 高级检索  
     

基于多项式曲线拟合的海上地震勘探拖缆定位EI北大核心CSCD
引用本文:余文坤,吴佩达,张昊楠,胡广浩,阮福明,戴吾蛟,匡翠林. 基于多项式曲线拟合的海上地震勘探拖缆定位EI北大核心CSCD[J]. 测绘学报, 2022, 51(5): 772-780. DOI: 10.11947/j.AGCS.2022.20200588
作者姓名:余文坤  吴佩达  张昊楠  胡广浩  阮福明  戴吾蛟  匡翠林
作者单位:1. 中南大学地球科学与信息物理学院, 湖南 长沙 410083;2. 中海油田服务股份有限公司物探事业部, 天津 300451;3. 海洋石油勘探国家工程实验室, 北京 100028
基金项目:国家自然科学基金(41674011;41774040)~~;
摘    要:海上拖缆地震勘探作业过程中电缆在形状上通常呈现为光滑的曲线,传统的拖缆定位大多基于坐标递推的数值方式,对声学距离、罗经鸟方位角等观测值的建模在理论上不够严密。为使观测值得到更加充分的利用,本文提出一种基于多项式曲线拟合电缆形状的平差定位模型。使用我国南海某工区海上拖缆勘探作业的实际数据进行测试,结果表明,本文模型估计的检波点位置精度约4.5 m,与传统模型相比精度最大改善率为58.1%,因此,本文模型能够更好地保障高精度海上地震勘探作业的顺利进行。

关 键 词:海上地震勘探  拖缆定位  多项式曲线拟合  严密平差
收稿时间:2020-12-30
修稿时间:2021-12-25

Offshore towed-streamer seismic positioning based on polynomial curve fitting
YU Wenkun,WU Peida,ZHANG Haonan,HU Guanghao,RUAN Fuming,DAI Wujiao,KUANG Cuilin. Offshore towed-streamer seismic positioning based on polynomial curve fitting[J]. Acta Geodaetica et Cartographica Sinica, 2022, 51(5): 772-780. DOI: 10.11947/j.AGCS.2022.20200588
Authors:YU Wenkun  WU Peida  ZHANG Haonan  HU Guanghao  RUAN Fuming  DAI Wujiao  KUANG Cuilin
Affiliation:1. School of Geosciences and Info-physics, Central South University, Changsha 410083, China;2. China Oilfield Services Limited Geophysical Division, Tianjin 300451, China;3. National Engineering Laboratory for Offshore Oil Exploration, Beijing 100028, China
Abstract:In offshore towed-streamer seismic exploration, the streamers are generally smooth curves in shape. Traditional streamer positioning approaches often recursively compute the coordinates by numerical integration, in which observations such as acoustic distance and compass azimuth cannot be rigorously modeled in theory. To make full use of these observations, a rigorous adjustment positioning model based on polynomial curve fitting is proposed. The experimental results based on survey datasets demonstrate that the positioning accuracy of the seismic point estimated by the new algorithm is about 4.5 m, and the maximum accuracy improvement rate is 58.1% compared with the traditional algorithm. Therefore, the new algorithm can better ensure the progress of the high-precision offshore towed-streamer seismic exploration.
Keywords:
本文献已被 维普 万方数据 等数据库收录!
点击此处可从《测绘学报》浏览原始摘要信息
点击此处可从《测绘学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号