Study on the signature of ground moving target for airborne squint SAR imaging

Compared with the side-looking Synthetic Aperture Radar (SAR), the flexible beam-pointing of squint SAR makes great application value. This paper derives the image signature of the ground moving target after the processing of Range-Doppler (RD) algorithm, the SAR signatures of ground moving targets are analyzed, including the geometry correction, the offsets and defocusing in both range and azimuth direction. Finally, computer simulation results validate its effectiveness. The research results are especially significant for moving targets detection and parameters estimation in squint mode SAR.

[1]  Renbiao Wu,et al.  Moving target imaging via the high squint SAR , 2011, 2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar (APSAR).

[2]  Renbiao Wu,et al.  Approach for single channel SAR ground moving target imaging and motion parameter estimation , 2007 .

[3]  Xiaotao Huang,et al.  A Novel Imaging Approach for High Resolution Squinted Spotlight SAR Based on the Deramping-Based Technique and Azimuth Nlcs Principle , 2012 .

[4]  Zhaoda Zhu,et al.  A Novel Moving Target Detection Approach for Dual-Channel SAR System , 2011 .

[5]  Hao Ling,et al.  Time-Frequency Transforms for Radar Imaging and Signal Analysis , 2002 .

[6]  Wuping Zhang,et al.  Virtual Crop Root System Model Depending on Topological Structural and Biomass Available Partitioning , 2012 .

[7]  Ramin Sabry.  Basic Slant Range–Doppler Modeling of Moving Scatterers for SAR Applications , 2008, IEEE Geoscience and Remote Sensing Letters.

[8]  Ian G. Cumming,et al.  Digital Processing of Synthetic Aperture Radar Data: Algorithms and Implementation , 2005 .

[9]  J.M.B. Dias,et al.  Multiple moving target detection and trajectory estimation using a single SAR sensor , 2003 .

[10]  Wen-Qin Wang,et al.  Moving Target Indication via Three-Antenna SAR with Simplified Fractional Fourier Transform , 2011, EURASIP J. Adv. Signal Process..

[11]  Chibiao Ding,et al.  An Airborne Single-channel SAR-GMTI Method Based on Defocusing Shifted Difference: An Airborne Single-channel SAR-GMTI Method Based on Defocusing Shifted Difference , 2010 .