RESOLUTION ENHANCEMENT ALGORITHM FOR SPACEBORN SAR BASED ON HANNING FUNCTION WEIGHTED SIDELOBE SUPPRESSION
- 1Beijing Institute of Remote Sensing Information,100192, Haidian District , Beijing, China
- 2National Geomatics Center of China, 100830, 28# Lianhuachi road, BeiJing, China
Keywords: SAR image, Sidelobe suppression, Hunning function
Abstract. Resolution and sidelobe are mutual restrict for SAR image. Usually sidelobe suppression is based on resolution reduction. This paper provide a method for resolution enchancement using sidelobe opposition speciality of hanning window and SAR image. The method can keep high resolution on the condition of sidelobe suppression. Compare to traditional method, this method can enchance 50 % resolution when sidelobe is −30dB.