利用航天飞机3号SIR-C数据对额济纳旗北部中-蒙交界处浅层地下水的分布与形成原因进行研究，分析了在SIR-C图像上呈亮条带的机理，研究得出如下结论：（1）浅层地下水区能被ISR-C图像特别是L-HV以及L-HH极化以亮黄色强烈显示，这是与该带地下水位浅，植被长势好，植被固沙形成沙垄等因素造成雷达波体散射以及后向散射强烈所致；（2）在研究区的中-蒙交界段正是地形由缓向陡转折处，这是与拉张正断层原因导致中方上盘相对下降，并在此处具备储水条件有关。（3）雷达遥感能敏感地探测到微地形的变化，可很好地反映地表植被分布和地表及次地表水分，使其在干旱区应用研究具有极大的优势，此研究可能为西部干旱区寻找浅层地下水提供一条快捷，实用的方法。

Using shuttle imaging radar SIR-C data, the authors studied the distribution and formation of shallow layer ground-water in China-Mongolia boundary. The following results are obtained: 1. The bright yellow belt on the composite SIR-C imagery (R: L-HH,G:L-HV, B:C-HV)shows the distribution of shallow groundwater, as a result of radar volume scatter and backscatter caused by shallow groundwater level, and well-growing vegetation and sand solidification along sand-dune. 2. Landform varies from gentle to steep in China-Mongolia boundary of the research area, it is caused by normal fault. The Up-block in China relatively fall. This forms a favorable condition for water storage. 3. Radar remote sensing has the capability of penetrating dry sand and soil, and captures surface and subsurface moisture information, and possesses the sensitivity of reflection roughness or micro-topography of ground surface and the crown layer of vegetation. It has a great advantage for remote sensing study in arid region. Radar remote sensing has been one of the useful means in prospecting for shallow layer underground water in arid area.