Results 131 to 140 of about 1,709,476 (165)

Scanning Spaceborne Synthetic Aperture Radar With Integrated Radiometer

IEEE Transactions on Aerospace and Electronic Systems, 1981
Spaceborne synthetic aperture radar systems are severely constrained to a narrow swath by ambiguity limitations. Here a vertically scanned-beam synthetic aperture system (SCANSAR) is proposed as a solution to this problem. The potential length of synthetic aperture must be shared between beam positions, so the along-track resolution is poorer; a direct
Richard K Moore
exaly   +2 more sources

Effects of atmospheric precipitation on spaceborne synthetic aperture radar measurements

2009 European Microwave Conference (EuMC), 2009
Unlike space-based near-nadir viewing radars, X-SARs will mainly measure the slant-path integrated scattering and attenuation of precipitation in orthogonal oblique directions.. A microwave model for simulating the normalized Radar Cross Section (NRCS) SAR response was set up in this work and exploited to train the proposed X-SAR retrieval algorithms ...
MARZANO, FRANK SILVIO, MORI, SAVERIO, PIERDICCA, Nazzareno, PULVIRENTI, Luca, J. A. Weinman   +4 more
openaire   +1 more source

Precise Simulation of Spaceborne Synthetic Aperture Radar and Its Evaluation

IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium, 2008
Simulation technique becomes increasingly important with the development of Synthetic Aperture Radar (SAR). It can be applied for many purposes such as testing different imaging algorithms and validating different SAR system design parameters[1]. For improving the precision of simulator determination of the location (mainly refers to latitude) of ...
Ran Li, Jingwen Li 0003
openaire   +2 more sources

Studies of Multibaseline Spaceborne Interferometric Synthetic Aperture Radars

IEEE Transactions on Geoscience and Remote Sensing, 1990
The authors have utilized a set of Seasat synthetic aperture radar (SAR) data that were obtained in nearly repeat ground-track orbits to demonstrate the performance of spaceborne interferometric SAR (INSAR) systems. An assessment of the topography measurement capability is presented.
F.K. Li, R.M. Goldstein
exaly   +2 more sources

Attitude-Steering Strategy for Squint Spaceborne Synthetic Aperture Radar

IEEE Geoscience and Remote Sensing Letters, 2016
For spaceborne synthetic aperture radar systems, minimizing the Doppler centroid variation over the range swath may bring many benefits, including improving the accuracy of the Doppler centroid estimation, alleviating the complexity of the data processing, and so on.
Shuo Zhao 0002, Yunkai Deng, Robert Wang 0001   +2 more
openaire   +2 more sources

Spaceborne synthetic aperture radar and noise jamming

Radar Systems (RADAR 97), 1997
The susceptibility of a synthetic aperture radar (SAR) system to interference is of concern in both military and civil applications. The effects of interference can be seen on early images from the JERS system, for example, where the interference came from land based radars.
openaire   +1 more source

Calibration and characterisation of spaceborne Synthetic Aperture Radars (SAR)

Advances in Space Research, 1997
Abstract Applications of Synthetic Aperture Radar (SAR) data are many and varied. The emergence of SAR as a commercially viable commodity is also focusing needs to provide services to fulfil applications at affordable prices. This then drives the need to include only features in the system that are necessary and to arrive at designs which are cost ...
D.J.Q. Carter, D.L. Hurd, R.A. Cordey
openaire   +1 more source

Spaceborne Bistatic Synthetic Aperture Radar

2008
In order to maintain adequate swath overlap along the orbit, BSAR missions require careful selection of orbits and pointing which must also take into account system-level issues, for instance: impacts on transmitting/receiving radar mission, requirements on bistatic payload/bus, lifetime.
MOCCIA, ANTONIO, D'Errico M.
openaire   +1 more source

Conceptual spaceborne Ka-band spotlight synthetic aperture radar with reconfigurable aperture

IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2004
Two principal objectives of this investigation are: a) to produce using a reconfigurable aperture circular beam footprints for grazing angles from 15/spl deg/ to 70/spl deg/, and b) to maintain high efficiency high-power 35 GHz solid-state devices in a feed array.
openaire   +1 more source

Parametric NLFM Waveform for Spaceborne Synthetic Aperture Radar

IEEE Transactions on Geoscience and Remote Sensing, 2022
Yongwei Zhang 0001, Yunkai Deng, Zhimin Zhang 0001, Wei Wang 0091, Robert Wang 0001   +4 more
openaire   +2 more sources