摘要
为了保证多波束成果质量,需要对测深数据进行精度评估和误差分析。交叉检查是有效的多波束水深精度评估方法,文章在传统的基于面的交叉检查中,采用了置信度为95%的均方根差作为多波束交叉点水深不符值的精度指标,并进一步提出了基于P ing的交叉检查方法对精度超限的数据进行误差分析。通过实例分析表明:置信度为95%的均方根差作为精度指标较为可靠;基于P ing的交叉检查方法能够辨别多波束水深数据中常见的几种不同类型误差。
To ensure the quality of multibeam data, it is necessary to evaluate the accuracy and analyze errors in the data. Crosscheck is an effective method for multibeam accuracy evaluating. In this article, the RMS with 95% confidence measure is chosen as the accuracy indicator in the crosscheck based on area; furthermore, the crosscheck based on ping is advanced to analyze errors of suspect data. With the example, it is indicated that the RMS with 95% confidence measure is a reliable indicator and different kinds of errors can be found with the method of crosscheck based on ping.
出处
《海洋技术》
2006年第1期119-123,共5页
Ocean Technology
