Interferometric methods are well established in optics and radio astronomy. In recent years, interferometric concepts have been applied successfully to synthetic aperture radar (SAR) and have opened up new possibilities in the area of earth remote sensing. However interferometric SAR applications require thorough phase control through the imaging process. The phase accuracy of SAR images is aff...

A new method to recognize ship target in SAR imagery using an Active Appearance Model (AAM) is proposed in this paper. The AAM can describe both shape and grey-level appearance of target which can present the SAR target more accurately.The application of AAM in SAR targets recognition was discussed in details. And the effectiveness of the method was demonstrated through the ship target classifi...

due to the tilt of the platform carrying the synthetic aperture radar(sar), the image formation algorithms(like rda) can not yield to good quality images from the ground. therefore, it is convenient to use a two-step approach for motion compensation in image formation algorithms. in this paper, using an approximated linear model for the motion error and the impact of range compression step of r...

On synthetic aperture radar (SAR) images acquired over the ocean often sea surface signatures of atmospheric gravity waves (AGWs) as well as of oceanic internal waves are visible. They often look quite similar and it is not always easy to decide whether the wave-like patterns result from AGWs or from oceanic internal waves. In this paper we present criteria how to discriminate between these two...

This paper present a fast algorithm for synthetic aperture radar (SAR) image segmentation based on the augmented Lagrangian method (ALM). The proposed approach considers the segmentation of SAR images as an energy minimization problem in a variational framework. The energy functional is formulated based on the statistical characteristic of SAR images. The total variation regularization is used ...

Antenna trajectory or motion errors are pervasive in synthetic aperture radar (SAR) imaging. Motion errors typically result in smearing and positioning errors in SAR images. Understanding the relationship between the trajectory errors and position errors in reconstructed images is essential in forming focused SAR images. Existing studies on the effect of antenna motion errors are limited to cer...

Various applications, like for instance algorithm design, mission planning, geo-referencing, change detection , Automatic Target Recognition (ATR) or SAR data analysis, rely on simulated synthetic aperture radar (SAR) images. However, there are different SAR simulation techniques with different advantages and disadvantages. Depending on the needs of a certain application, a suitable SAR simulat...

New synthetic aperture radar (SAR) sensors on satellites like TerrsSAR-X allow flexible mapping with a large coverage or a high resolution of about one meter. Leading-edge airborne SAR sensors provide spatial resolutions on the order of a decimetre. In such data, many features of urban objects can be identified, which were beyond the scope of radar remote sensing before. But, SAR images are oft...

Introduction: Motion compensation (MoCo) is one of the key steps to gather well-focused images for airborne synthetic aperture radar (SAR). For SAR systems operating at low frequencies, e.g. the VHF/ UHF band, wide-beam processing is needed in MoCo to deal with the angular dependent motion error. Therefore, a sub-aperture MoCo algorithm was proposed [1] to compensate for the motion error across...

[1] Semidiurnal internal tides propagating toward and along the east coast of Korea are elucidated from the surface manifestation of non-linear internal wave (NLIW) packets in synthetic aperture radar (SAR) images taken on September 2, 1996. The SAR images reveal two pairs of NLIW packets, one on the northern side of the southwestern East (Japan) Sea and the other on the western side. The NLIW ...