基于抗差最小二乘配置的海底地形生成研究

最小二乘配置算法能同时顾及测深数据的系统性和随机性影响,提高海底地形的生成精度。根据该算法建立了海洋测深多波束数据的函数模型和随机模型,并构建海底地形。为避免测深数据的异常值影响,进一步推导了基于抗差估计的协方差函数求解公式,提出抗差最小二乘配置算法生成海底地形。利用多波束数据生成海底,结果显示抗差最小二乘配置算法能在构建海底地形的同时准确剔除测深异常。将构建的地形与双线性多项式内插生成的海底进行比较,进一步说明了该算法具有较高的海底地形生成精度。

Abstract：

Seabed terrain generating precision can be improved by least-squares collocation algorithm which takes the systematic and stochastic effects in the bathymetry data. The functional model and stochastic model of the algorithm were created by multibeam bathymetry data,and the method of creating seabed terrain by Least-squares Collocation was researched. To avoid the effect of outliers in bathymetry data,covariance function was calculated by robust estimation,and the Robust Least-squares Collocation algorithm for terrain generation was proposed. It was applied to the real bathymetry data set,and the results indicate that the outliers are detected by the algorithm while the seabed terrain is generated. In the remainder,the terrain grids was compared with which created by bilinear polynomial interpolation algorithm,and it is proved that the Robust Least-squares Collocation algorithm can get higher precision of seabed terrain generation while detecting outliers.     

科技经纪人在科技成果转化中的定位与作用探究

科技经纪人是新兴的一类科技成果转化人才，其在科技成果转化中具有特定的作用，如何定位和发展科技经纪人队伍，对科技成果转化工作具有重要意义。总结了科技经纪人的来源，分析了科技经纪人的概念和界定范围，阐述了科技经纪人与技术经理人、技术经纪人的区别和联系，分析了当前科技经纪人队伍建设的问题。通过对科技经纪人概念的研究，为科技经纪人队伍建设提出了具体可行的建议。