Results 11 to 20 of about 151,553 (228)

Spaceborne Reflector SAR Systems with Digital Beamforming [PDF]

open access: yesIEEE Transactions on Aerospace and Electronic Systems, 2012
Spaceborne synthetic aperture radar (SAR) imaging enters an era where increasingly short revisit times, or large swath widths, respectively, and high spatial resolutions are requested. These requirements impose contradicting constraints on conventional SAR systems using analog beamforming technology.
Sigurd Huber   +4 more
openaire   +3 more sources

Spaceborne bi- and multistatic SAR: potential and challenges [PDF]

open access: yesIEE Proceedings - Radar, Sonar and Navigation, 2006
Bi- and multistatic synthetic aperture radar (SAR) operates with distinct transmit and receive antennas that are mounted on separate platforms. Such a spatial separation has several operational advantages, which will increase the capability, reliability and flexibility of future SAR missions.
Krieger, Gerhard, Moreira, Alberto
openaire   +5 more sources

Forthcoming Spaceborne SAR Development

open access: yesLeida xuebao, 2020
Spaceborne Synthetic Aperture Radar (SAR), which can be mounted on space vehicles to collect information of the entire planet with all-day and all-weather imaging capacity, has been an indispensable device for earth observation. Currently, the technology
DENG Yunkai   +5 more
doaj   +2 more sources

German Spaceborne SAR Missions [PDF]

open access: yes2021 IEEE Radar Conference (RadarConf21), 2021
This paper provides an overview of the German spaceborne radar program starting with the X-band synthetic aperture radar (SAR) instrument on board the Shuttle Imaging Radar missions (SIR-C/X-SAR) in 1994, followed by the Shuttle Radar Topography Mission (SRTM) in 2000.
Moreira, Alberto   +4 more
openaire   +2 more sources

A Bistatic Analytical Approximation Model for Doppler Rate Estimation Error from Real-Time Spaceborne SAR Onboard Orbit Determination Data

open access: yesRemote Sensing, 2020
Real-time spaceborne bistatic SAR imaging could significantly reduce the whole processing time and can enhance the spaceborne SAR mission availability.
Xiaoyu Yan   +3 more
doaj   +1 more source

Spaceborne Bistatic SAR Scene Simulation [PDF]

open access: yesIGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018
Augmenting traditional spaceborne SAR sensors with additional receive-only satellites in close formation enhances the observation space, allowing for single-pass interferomtry in along-and/or across-track with flexible baselines and the potential to build tomographic stacks with reduced temporal decorrelation properties. The feasibility of such add-ons
Scheiber, Rolf   +3 more
openaire   +2 more sources

Estimating the Observation Area of a Stripmap SAR via an ISAR Image Sequence

open access: yesRemote Sensing, 2023
The stripmap mode is a basic and important mode for spaceborne synthetic aperture radars (SARs). Estimating the time-varying area observed by spaceborne SARs operating in stripmap mode is a practical but challenging field of research. In this article, we
Bo Li   +7 more
doaj   +1 more source

Spaceborne Compact Polarimetric Synthetic Aperture Radar for Ship Detection

open access: yesLeida xuebao, 2016
Spaceborne Compact Polarimetric Synthetic Aperture Radar (CP SAR) is a new form of SAR, which has intrinsic advantages in maritime surveillance because it can obtain relatively rich polarimetric information of targets with wide swath.
Ji Kefeng   +4 more
doaj   +1 more source

Review of Novel Azimuthal Multi-angle Observation Spaceborne SAR Technique

open access: yesLeida xuebao, 2020
This paper reviews the novel azimuthal multi-angle spaceborne Synthetic Aperture Radar (SAR) technique. First, the development status and trend of SAR satellites are analyzed, and their observation capacities are compared considering different aspects ...
CHEN Jie   +5 more
doaj   +1 more source

Current Situation and Development Trend of Inflight Antenna Pattern Measurement Techniques of Spaceborne SAR

open access: yesLeida xuebao, 2012
The antenna pattern uncertainty is the main error of SAR system. The technique for inflight antenna pattern measurement of spaceborne SAR is one of the most important technique of SAR calibration.
Hong Jun, Ming Feng, Hu Ji-wei
doaj   +1 more source

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