Offshore towed-streamer seismic positioning based on polynomial curve fitting

doi:10.11947/j.AGCS.2022.20200588

Abstract

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.

Key words: offshore seismic exploration, towed-streamer positioning, polynomial curve fitting, rigorous adjustment

CLC Number:

P229

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.

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