LADCP数据处理方法的探讨及其对应软件包的使用  

Study on Methods of Processing Lowered Acoustic Doppler Current Profilers(LADCPs) Data and Use of Corresponding Software Packages

作　　者：郭心顺[1] 杨庆轩[2] 康建军[2] 田纪伟[2] 

机构地区：[1]中国海洋大学船舶中心,山东青岛266003 [2]中国海洋大学物理海洋实验室,山东青岛266003

出　　处：《海洋技术》2006年第4期1-5,57,共6页Ocean Technology

基　　金：国家自然科学基金资助项目(40552002);国际科技合作(2004DFB02700)资助项目;国家重点基础研究发展计划(2005CB422303)资助项目

摘　　要：针对国内当前在LADCP数据处理过程中出现的问题,引入了国际海洋界目前普遍使用的两种方法,即剪切方法和逆方法,着重阐述了它们的主要思想,并详细介绍了基于这两个方法而编写的软件包,包括它们的构成、各部分的功能、具体使用步骤及注意事项。利用2005年9月至12月‘863规范化外海试验’的数据进行了大量验证,结果表明利用这两种方法获得的绝对流速与AANDERRA海流计和150 kH z船载ADCP的流速结果符合良好,平均误差为±3 cm.-s 1,可以作为一个有力的工具广泛应用于以后的海洋调查中。The two popular methods used by international ocean research community, shear and inversion method, were introduced because of the problems encountered in sampling the LADCP data and processing them later. The principle of each method was described in detail. The two corresponding software package were introduced as well, including their structure, function and execution steps. The results obtained by the two software packages compare favorably with the current velocity derived from AANDERRA Current Meter and 150 kHz shipboard ADCP with an average uncertainty of ± cm · s^-1. The two software packages will become very useful tools in obtaining the reliable current velocity from LADCP data in the future ocean research.

关 键 词：Lowered ACOUSTIC DOPPLER CURRENT Profilers(LADCPs) 下放式测量 剪切方法 逆方法 

分 类 号：P715[天文地球—海洋科学]