Results 21 to 30 of about 103,839 (206)
Advanced Synthetic Aperture Radar Based on Digital Beamforming and Waveform Diversity [PDF]
, 2008 This paper introduces innovative SAR system concepts for the acquisition of high resolution radar images with wide swath coverage from spaceborne platforms.
Gebert, Nicolas +3 more
core +1 more source
Fractal parameters and SAR images [PDF]
2008 IEEE Radar Conference, 2008 The fractal geometry proved to be the most appropriate mathematical instrument in describing natural scenes, by means of few effective and reliable geophysical parameters. In this paper we describe a complete processing chain for the retrieving of SAR image fractal parameters and for change detection purposes.
DI MARTINO, GERARDO +3 more
openaire +2 more sources
Two-dimensional deceptive jamming mitigation algorithm for SAR imaging using frequency diverse array
The Journal of Engineering, 2019 The synthetic aperture radar (SAR) may be threatened greatly by the deceptive jamming within its main-lobe. To tackle this problem, a two-dimensional self-adaptive frequency diverse array (FDA)-based SAR processing scheme is proposed in this study ...
Chenchen Lin +3 more
doaj +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 Azimuth multichannel synthetic aperture radar (SAR) is a useful approach to solving minimum antenna area constraint and realizing high resolution and wide swath (HRWS) imaging by multichannel signal reconstruction.
Jixiang Xiang +5 more
doaj +1 more source
Transformer-Based SAR Image Despeckling
IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium, 2022 Synthetic Aperture Radar (SAR) images are usually degraded by a multiplicative noise known as speckle which makes processing and interpretation of SAR images difficult. In this paper, we introduce a transformer-based network for SAR image despeckling. The proposed despeckling network comprises of a transformer-based encoder which allows the network to ...
Perera, Malsha V. +3 more
openaire +2 more sources
PSF Analysis and Ground Test Results of a Novel Circular Array 3-D SAR System
Leida xuebao, 2018 Array Synthetic Aperture Radar (ASAR) system radar imaging field has gained attention because of its three-dimensional (3-D) imaging ability. A novel Circular Array SAR (CASAR) system is employed for 3-D high-resolution radar imaging to overcome the ...
Ming Jing +3 more
doaj +1 more source
IRCI Free Range Reconstruction for SAR Imaging with Arbitrary Length OFDM Pulse [PDF]
, 2013 Our previously proposed OFDM with sufficient cyclic prefix (CP) synthetic aperture radar (SAR) imaging algorithm is inter-range-cell interference (IRCI) free and achieves ideally zero range sidelobes for range reconstruction.
Kong, Lingjiang +2 more
core +1 more source
OFDM Synthetic Aperture Radar Imaging with Sufficient Cyclic Prefix [PDF]
, 2014 The existing linear frequency modulated (LFM) (or step frequency) and random noise synthetic aperture radar (SAR) systems may correspond to the frequency hopping (FH) and direct sequence (DS) spread spectrum systems in the past second and third ...
Xia, Xiang-Gen, Zhang, Tian-Xian
core +1 more source
Radargrammetric SAR Image Processing
, 2009 This chapter has dealt with the relevance of using stereoscopic radar images in order to retrieve the relief of terrain. Firstly, the basic characteristics of the radar image (SAR image) were described and the parameters which were different from those of an optical image werepointed out especially the image resolution and set up in the slant plane ...
Méric, Stéphane +2 more
openaire +4 more sources
SAR Image Segmentation with GMMs [PDF]
International Conference on Radar Systems (Radar 2017), 2017 This paper proposes a new approach for Synthetic Aperture Radar (SAR) image segmentation. Segmenting SAR images can be challenging because of the blurry edges and the high speckle. The segmentation proposed is based on a machine learning technique.
Belloni, C. +3 more
openaire +3 more sources