نتایج جستجو برای: interferometric synthetic aperture radar ifsar

تعداد نتایج: 197921  

2017
Yonghong He Jianjun Zhu Haiqiang Fu Qinghua Xie Bing Xu Bing Zhang

This paper presents a new filtering approach for Synthetic Aperture Radar (SAR) interferometric phase noise reduction in the shearlet domain, depending on the coherent statistical characteristics. Shearlets provide a multidirectional and multiscale decomposition that have advantages over wavelet filtering methods when dealing with noisy phase fringes. Phase noise in SAR interferograms is direct...

Journal: :Remote Sensing 2017
Huiqiang Wang Guangcai Feng Bing Xu Yongping Yu Zhiwei Li Yanan Du Jian-Jun Zhu

Subways have been an important method for relieving traffic pressures in urban areas, but ground subsidence, during construction and operation, can be a serious problem as it may affect the safety of its operation and that of the surrounding buildings. Thus, conducting long-term ground deformation monitoring and modeling for subway networks are essential. Compared with traditional geodetic meth...

2017
E. Lintz Christensen J. Dall N. Skou

EMISAR is a Cand L-band fully polarimetric (i.e. 4 complex channel per frequency) synthetic aperture radar designed for remote sensing with high demands for resolution (2 m), polarization discrimination, and absolute radiometric and polarimetric calibration. The present installation has one 3axes stabilized antenna (Cor L-band) and two flush mounted C-band antennas providing the system with cro...

2011
Daniele Perissin Zhiying Wang Teng Wang

In this work we introduce a very flexible research tool for processing Interferometric Synthetic Aperture Radar (InSAR) data. The software, called SARPROZ, is able to perform different multi-temporal analysis like Permanent Scatterers (PS), Quasi-PS (QPS) and much more. SARPROZ has been intensively used for analyzing several test-sites in China with different spaceborne SAR data. Here we show r...

2000
M. Shimada

The author introduces the status of the Japan Aerospace Exploration Agency’s synthetic aperture radar (SAR) programmes and their scientific returns from the last 20 years of activity. The Earth observation programme was started using active microwave sensors in the early 1990s. Spaceborne SAR aboard Japanese Earth Resource’s Satellite-1 (JERS-1) was the pathfinder, and airborne polarimetric and...

2000
S. Banks

Interferometric Synthetic Aperture Sonar (ISAS) offers the possibility of high resolution, three-dimensional images of objects on the ocean floor. The height of objects is identified from the phase difference between two synthetic aperture images of the object obtained using two receivers separated by a short distance. A central problem is the need to unwrap the phase difference in the presence...

2000
K. Clint Slatton Melba M. Crawford Brian L. Evans

Interferometric synthetic aperture radar (INSAR) has been used to map terrain topography; however, accuracy is limited because observations are not measurements of true surface topography over vegetated areas. Instead, the measurements, which depend on the sensor and the vegetation, represent some height above the true surface. We solve an inverse problem for INSAR scattering to determine surfa...

2010
Scott Hensley Delwyn Moller Thierry Michel

As part of the NASA International Polar Year activities, a Ka-band cross-track interferometric synthetic aperture radar recently demonstrated high precision elevation swath mapping capability. This proof-ofconcept instrument was achieved by interfacing antennae and Ka-band electronics with the Jet Propulsion Laboratory’s L-band UAVSAR. Deployed on the NASA Gulfstream III, initial successful eng...

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