Results 81 to 90 of about 4,159 (214)

Ocean Surface Observations Using the TanDEM-X Satellite Formation [PDF]

open access: yes, 1991
The TanDEM-X SAR satellite formation permits improved ocean surface observations by means of bistatic along-track interferometry (ATI) when compared to single-satellite systems.
Runge, Hartmut, Suchandt, Steffen
core   +4 more sources

A New Age of SAR: How Can Commercial Smallsat Constellations Contribute to NASA's Surface Deformation and Change Mission?

open access: yesEarth and Space Science, Volume 12, Issue 1, January 2025.
Abstract In response to the 2017 Decadal Survey, NASA conducted a five‐year study on the Surface Deformation and Change (SDC) designated observable to study potential mission concepts. As part of the SDC mission study, the Commercial Synthetic Aperture Radar (ComSAR) subgroup was tasked with evaluating the current landscape of the SAR and ...
Stacey A. Huang   +9 more
wiley   +1 more source

Generalized PFA for Air-Missile Borne Bistatic Forward-Looking Beam-Steering SAR With Accelerations

open access: yesIEEE Access, 2018
For air-missile borne bistatic forward-looking beam-steering synthetic aperture radar (BFLBS-SAR), the receiver platform moves along a curve track due to the existence of accelerations.
Shiyang Tang   +4 more
doaj   +1 more source

DISCUS - The Deep Interior Scanning CubeSat mission to a rubble pile near-Earth asteroid

open access: yes, 2018
We have performed an initial stage conceptual design study for the Deep Interior Scanning CubeSat (DISCUS), a tandem 6U CubeSat carrying a bistatic radar as main payload.
Bambach, Patrick   +7 more
core   +1 more source

Proposed satellite position determination systems and techniques for Geostationary Synthetic Aperture Radar [PDF]

open access: yes, 2016
This paper proposes two different calibration techniques for Geostationary Synthetic Aperture Radar (GEOSAR) missions requiring a high precision positioning, based on Active Radar Calibrators and Ground Based Interferometry.
Broquetas Ibars, Antoni   +3 more
core   +2 more sources

An ISAR target motion estimation algorithm based on a differential semblance criterion

open access: yesElectronics Letters, Volume 61, Issue 1, January/December 2025.
This study presents a novel approach for improving rotational motion estimation in multistatic Inverse Synthetic Aperture Radar (ISAR) imaging through a Differential Semblance Optimization (DSO) criterion. By reducing discrepancies across images from multiple transmitter–receiver pairs, our method enables precise yaw rotation estimation and produces ...
D. P. Huxley   +2 more
wiley   +1 more source

Multistatic Synthetic Aperture Radar Autofocus for Back Projection Imaging of a Moving Target

open access: yesElectronics Letters, Volume 61, Issue 1, January/December 2025.
This paper presents a new metric‐based autofocus approach, called Localised Threshold Sharpness (LTS), which employs Multistatic SAR data to localise and focus a target moving with up to six degrees of freedom motion on a real‐time, pulse‐by‐pulse basis.
Anmol Rattan, Daniel Andre, Mark Finnis
wiley   +1 more source

Improved Reconstruction of Radio Holographic Signal for Forward Scatter Radar Imaging

open access: yesSensors, 2016
Forward scatter radar (FSR), as a specially configured bistatic radar, is provided with the capabilities of target recognition and classification by the Shadow Inverse Synthetic Aperture Radar (SISAR) imaging technology.
Cheng Hu   +3 more
doaj   +1 more source

Geosynchronous SAR for Terrain & atmosphere with short revisit (GeoSTARe) [PDF]

open access: yes, 2016
Geo STA Re would be a mission combining the continuous view capabilities from geostationary orbits of super-continental areas with the all-day, all-weather imaging capabilities of Synthetic Aperture Radar.
Bombaci, Ornella   +7 more
core  

Microlocal aspects of bistatic synthetic aperture radar imaging

open access: yes, 2010
In this article, we analyze the microlocal properties of the linearized forward scattering operator $F$ and the reconstruction operator $F^{*}F$ appearing in bistatic synthetic aperture radar imaging. In our model, the radar source and detector travel along a line a fixed distance apart.
Krishnan, Venky P., Quinto, Eric Todd
openaire   +2 more sources

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