An effective feature fusion strategy applied in barracks detection is proposed

which takes advantage of the complementary target features in Synthetic Aperture Radar（SAR） and optical satellite images.With more details

it is easier to detect barracks in optical satellite images.However

extracted features in optical satellite images may be unreliable because of the complex background.Thus feature fusion between SAR and optical satellite images is needed. Traditional fusion detection methods are commonly using image registration to set up mapping of the same target in multi-source satellite images.However

due to side-looking character of SAR imaging

the hypsography may cause distortion and precise rectification of the distortion will be very complex.What is more

reference control points are different to select because of the different imaging methods

and co-registration between SAR and optical satellite images may be not perfect.Thus

in this paper we tried to avoid precise rectification and co-registration.The proposed method firstly locates barracks in optical satellite images and cuts the SAR sub images of the same location by adopting the geodetic coordinates information of images.It then independently extracts the feature information of detection results in both optical satellite images and SAR sub images and makes the extracted areas associated according to the redundant feature information.Also a verification method is present to make sure the association is correct.Finally

all the features are fused to get a more accurate and integral description of targets.Results obtained prove that this method can fully use the information of multi-source satellite images

reduce detection mistakes and improve the accuracy of targets features.