对基于SAR图像匹配定位的地形辅助惯性导航系统的原理进行了充分阐述；
The theory of terrain-aided navigation system has been presented, which is based on the matching of SAR images.
它在众多领域得到了广泛的应用。在飞行器组合导航系统中，利用SAR图像进行图像匹配，可以极大地提高系统的导航精度。
In combined navigation system, of vehicle, image matching by using SAR image could greatly improve the precision of the navigation system.
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