Research On Imaging And Barrage Jamming To Interferometric Synthetic Aperture Radar

Interferometric Synthetic Aperture Radar (InSAR) is a powerful remote sensingtechnique, which can accomplish change detection, such as slow-moving targets orsubtle shift of the earth’s surface, finally provide Digital Elevation Model(DEM) withheight accuracy and high spatial resolution. InSAR has been placed on great emphasisfor its wide and potential applications in many areas such as military, civil and scientificresearches. Main aspects in this thesis include imaging and barrage jamming to InSAR.InSAR is developed on the basis of conventional Synthetic Aperture Radar (SAR)techniques. To begin with, the technology of SAR imaging with emphasis onRange-Doppler algorithm is described in this thesis, followed by simulation experiment.Furthermore, the basic principles of InSAR are investigated in detail, and the processingprocedures of InSAR are summarized. And then, key techniques of InSAR process suchas phase unwrapping, height reconstruction are studied. The principles of phaseunwrapping are analyzed, in the mean time, least-squares two-dimensional phaseunwrapping using FFT is presented. The advantages and limits are separatelysummarized. More over, the convert of phase to height using simulated data is realized,topography reconstructed successfully．At last, barrage jamming to InSAR is researched.The effects of radio frequency noise barrage jamming to the imaging technique ofInSAR are discussed. The result of computer simulation demonstrates that barragejamming make InSAR system reconstruct the original terrain unsuccessfully.