Journal of Tropical Oceanography >
An effective method to eliminate the abnormal positioning data of USBL in the hydrothermal sulfide field investigation
Received date: 2009-04-08
Revised date: 2009-05-15
Online published: 2010-07-29
Supported by
国家自然科学基金(40476031); 国家海洋局青年海洋科学基金(2009314); 国家海洋局第二海洋研究所基本科研业务费专项资
助(JG200804)
The noise from dynamic positioning system of a vessel interferes with the data of ultra short base line (USBL) underwater positioning system in hydrothermal sulfide field investigation, while in situ decision-making and continuing research demand much better underwater positioning data. It is therefore necessary to eliminate abnormal positioning data rapidly and effectively for the existing Posidonia 6000 USBL. This study takes the USBL procedure data (x, y, z) as elimination objects, sets up (x, y, z) elimination models according to field water depth and the block angle, and uses reasonable data structure and algorithm to realize interactive elimination according to maps between (x, y, z) and time series. With the models and interactive elimination, abnormal USBL positioning data can be eliminated effectively, and much better underwater positioning data can be provided for in situ decision-making of hydrothermal sulfide investigation and continuing research.
WU Xue-wen,BAO Geng-sheng,ZHANG Kai . An effective method to eliminate the abnormal positioning data of USBL in the hydrothermal sulfide field investigation[J]. Journal of Tropical Oceanography, 2010 , 29(4) : 165 -169 . DOI: 10.11978/j.issn.1009-5470.2010.04.165
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