In the soil resource management information system based on GIS, the most basic operations are the operation of map, the attribute data inquiry and statistics and spatial data inquiry as well.
在基于GIS的土壤资源管理信息系统中，最基本的操作是对地图的操作、属性数据的查询和统计以及空间数据的查询。
Comparison with the spatial processing method using fractional lower order statistics, the proposed algorithm provides more precise DOA estimates by using the ambiguity domain information of signals.
与基于分数低阶统计量的空域处理方法相比，该文提出的算法利用了信号在模糊域中的信息，提高了算法的估计精度。
The methods of landslide disaster spatial evaluation can be concluded as statistics, sensitivity mapping, information and all kinds of experience, etc.
滑坡灾害空间预测评价的方法可归纳为统计学方法、敏感性制图法、信息量法以及各种经验方法。
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