长期以来，对遥测参数的判读多由人工来完成，这种人工判读的方法不仅耗时较长，且很难对遥测得到的数据信息进行全面的判读。
The interpretation of telemetry data is traditionally accomplished by manpower with too much time cost and information in telemetry data can not be got efficiently as well.
即通过卫星影像的处理、判读，辅以GPS地面定位调查及其它调查方法获得中国北方沙化土地基础数据；
That is, acquiring basic data by processing and interpreting the satellite image, assisted by ground investigation using GPS and other investigation method;
相对于人工调查与判读而言，利用GIS从DEM数据及相关三维分析数据中判读小班地理因子更精确。
As to artificial investigation and interpretation, the subcompartment geographical factors interpretation are more accurate using GIS to draw DEM data and relative 3d analysis.
文中借助于ETM图像判读数据、统计资料与实际调查资料分析后认为，通辽市人工种草现状不容乐观，但尚有潜力可挖。
The phase and potential of grass plantation in Tongliao city has been discussed by means of analysis on ETM images, statistic and investigation data.
文中借助于ETM图像判读数据、统计资料与实际调查资料分析后认为，通辽市人工种草现状不容乐观，但尚有潜力可挖。
The phase and potential of grass plantation in Tongliao city has been discussed by means of analysis on ETM images, statistic and investigation data.
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