ground survey

satellite landsat tm images were obtained for the same period as the ground survey data collected.

收集与地面调查同期的TM卫片。

by using stepwise regression method, the linear regression model between ndvi and winter wheat yield was established, with the precision validated by the ground survey data.

同时，采用逐步回归方法筛选建立冬小麦关键生育期旬NDVI与冬小麦产量间关系的估产模型。

practice and study of soft ground survey for highways

高速公路软土地基勘测的实践与探讨

According to a classification experiment on the rugged terrain over the upstream of Hanjiang River Basin where the land use/ cover ground survey data are available, the proposed approach is far superior to the traditional maximum likelihood classification method.

与传统的最大似然法分类结果相比，该方法极大地改善了山区地表覆被分类的精度，得到试验区较为可靠的遥感分类图像。

the technology of gps has been introduced in ground survey, and has been rapidly developed in the area of road investigating as well.

GPS技术已被引入大地测量，在公路的勘测设计中也已得到迅速推广。

The paper analyzes ground survey of flood and low water in hydrological survey station.

对水文测站的洪水与枯水巡视进行了可行性分析。

application of coal mine ground survey managing information system in ground survey chart of gucheng coal mine

煤矿地测管理信息系统在古城煤矿地测绘图中的应用