摘要
定义了反映海洋测深网系统误差探测能力的系统误差分辨率;构建了系统误差分辨率与测深网结构及测区深度的数学关系。在此基础上,分析了我国海道测量规范要求下的测线系统误差探测能力与图幅及测深指标的关系。建议检/测长度比提高到10%~15%,以增强测深网探测系统误差的能力。最后海区试验表明,适当的检查线数有助于探测更小的系统误差。
The resolution is defined to reflect the ability of a sounding net to detect and find the systematic error on a sounding line.Based on the adjustment for sounding net,the mathematic model was given for the dependency of the systematic error resolution of a sounding line on the numbers of main lines and reference lines,and the depths on them.Based on the model,the systematic error resolution of sounding net in our Hydrographic Specification（GB12327-1998） is about 1.0~0.8 while the ratio of the length of reference line to that of main lines is about 5%,and the resolution can be up to 0.6~0.5,when the ratios of check line length to that of main lines is improved up to 10%~15%.Experiment proved that the adequate check lines are helpful to detect and find the smaller systematic errors along a sounding line.
出处
《测绘科学技术学报》
北大核心
2010年第3期180-183,188,共5页
Journal of Geomatics Science and Technology
基金
国家自然科学基金资助项目(40871207
40071070)
关键词
海洋测深网
测线系统误差探测能力
系统误差分辨率
测线
检查线
marine sounding net
ability to detect and find systematic error
resolution of systematic error along a sounding line
main line
check line
