海洋测绘2025，Vol.45Issue(1)：57-61,5.DOI:10.3969/j.issn.1671-3044.2025.01.013
基于CTD比测的国产XCTD热滞后问题处理方案研究
Research on processing scheme of domestic XCTD thermal lag problem based on CTD comparison measurement
姜德良 1王超 1刘飞 1封官延1
作者信息
- 1. 91937 部队,浙江 舟山 316000
- 折叠
摘要
Abstract
XCTD is an important instrument for ocean temperature/salt/depth observation.Due to the sensor time lag and thermal mass effect,the salinity derived calculation of XCTD data exists large deviation,which seriously affects the data quality.In order to solve the problem above,this paper proposes the idea of using linear interpolation simulation to improve the sampling rate and then complete the delay correction when the lag time is less than the sampling interval of the instrument,which is identified that could solve the problem of sampling loss and effectively reduce the spike of XCTD salinity with/without pressure sensor through the experiments.Based on Lucek correction formula,the iterative calculation of thermal and mass correction parameters for XCTD data with pressure sensor was carried out by using multiple sets of CTD measurements.The result shows that the optimal parameter category was basically stable,which could effectively reduce the RMSE between salinity measurements and those of contrast CTD.But there was no effective solution for XCTD without pressure sensor when the fall depth inversion was unstable.关键词
海洋调查/抛弃式温盐深剖面仪/温盐深剖面仪/时间滞后/热质效应/线性插值Key words
ocean survey/XCTD/CTD/time lag/thermal mass effect/linear interpolation分类
海洋科学引用本文复制引用
姜德良,王超,刘飞,封官延..基于CTD比测的国产XCTD热滞后问题处理方案研究[J].海洋测绘,2025,45(1):57-61,5.
