局域空间声速模型的建立方法研究

¹武汉大学测绘学院,武汉市珞喻路129号430079;²长江水利委员会长江口水文水资源勘测局,上海市浦东大道2412号,200136;³武汉大学动力与机械学院,武汉市东湖南路8号430072

基金项目: 国家自然科学基金资助项目(40776048)；山东省基础地理信息与数字化技术重点实验室开放研究基金资助项目(SD060808)

详细信息

Establishment of Spatial Model for Sound Velocity in Local

¹School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China;²Changjiang River Estuary Inversity Bureau of Hydrology and Water Resource,Changjiang Water Resource Commission,2412 Pudong Road,Shanghai 215431,China;³School of Power and Mechanical Engineering,Wuhan University,8 South Donghu Road,Wuhan 430072,China

Funds: 国家自然科学基金资助项目(40776048)；山东省基础地理信息与数字化技术重点实验室开放研究基金资助项目(SD060808)

摘要: 在多波束测深系统的数据处理中,声速剖面的代表性误差严重地影响着波束的声线跟踪精度,并造成比较大的深度计算误差。为了削弱该影响,利用实测声速剖面数据、温度与盐度剖面数据,采用两种方法分别建立了区域空间声速模型。实践验证了该方法的正确性和可行性。
- 声速剖面 /
- 温度剖面 /
- 盐度剖面 /
- 局域空间声速模型
Abstract: In order to weak the effect of the representative error of sound velocity profile(SVP),a new method,which is used for constructing spatial model of sound velocity and completely reflecting spatial structure of sound velocity,is studied.Two methods for building the local spatial model of sound velocity are given.One is that the model is constructed with SVPs;the other is that the model is constructed with temperature profiles and salt profiles.Both of the two methods can achieve very consistent accuracy and reach about 0.2 m/s in the construction of spatial model.The method is proved to be credible and feasible by an experiment.
- sound velocity profile(SVP) /
- temperature profile /
- salt profile /
- local spatial model of sound velocity