It is usually difficult to extract feature regions from two successive frames of SAR imagery which lack overlapping portion

because the effects of different random noise during the flight when forming SAR images. A new mosaic method for this sort of SAR sequential imagery is presented. Firstly

the flight information of the plane and geographical coordinates of several feature points in SAR images are used to conduct a rough match. And then

a detailed approach based on remarkable linear features extracted in adjacent areas of two images is used to determine the corresponding positions of two images

which can subtly mosaic the sequential images. Finally

the gray levels between two stitched images are fused to eliminate the remarkable seam. Experimental results testify that this algorithm is able to seamlessly stitch two successive images automatically.