Proceedings ArticleDOI
A Ka Band Imaging Radar: DRIVE on Board ONERA Motorglider
Jean Francois Nouvel,H. Jeuland,Gregory Bonin,S. Roques,O. Du Plessis,J. Peyret +5 more
- pp 134-136
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TLDR
A concept of low-cost imaging Ka-Band radar integrated into under-wings pods that are fixed on a STEMME S10VT motorglider, suitable for future integration on board small vehicles, such as UAV (Unmanned Aerial Vehicle).Abstract:
Following previous studies, a concept of low-cost imaging Ka-Band radar is presented in this paper. This radar is integrated into under-wings pods that are fixed on a STEMME S10VT motorglider. This radar concept combines real aperture in the cross-track direction, by the antennas geometrical aperture, and synthetic aperture in the along-track direction, realized with the aircraft motion. Radar front-end uses FMCW (for Frequency Modulated Continuous Wave) technique which allows to reduce the power emission to a few Watts. In addition, the use of the millimeter band induces antennas size reduction, and makes possible the radar integration into pods. Thus, radar particularities are a low- size, a low-weight and a low-cost basis, making this radar suitable for future integration on board small vehicles, such as UAV (Unmanned Aerial Vehicle). The radar definition and specifications will be exposed, together with the first results obtained on April 2006. Two ways of operation will be exposed: An application as vertical sounder, using cylindrical horn antennas, and an application as SAR radar, using rectangular antennas. The two cases will be illustrated by samples of results.read more
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Journal ArticleDOI
Theory and Application of Motion Compensation for LFM-CW SAR
Evan Zaugg,David G. Long +1 more
TL;DR: In this article, the effects of nonideal motion on the SAR signal are derived, and new methods for motion correction are developed, which correct for motion during the radar pulse, which means that existing motion compensation techniques that approximate the position as constant over a pulse are limited for LFM-CW SAR.
Journal ArticleDOI
Experimental Synthetic Aperture Radar With Dynamic Metasurfaces
Timothy Sleasman,Michael Boyarsky,Laura Pulido-Mancera,Thomas Fromenteze,Mohammadreza F. Imani,Matthew S. Reynolds,David R. Smith +6 more
TL;DR: In this article, the authors investigate the use of a dynamic metasurface as the transmitting antenna for a synthetic aperture radar (SAR) imaging system, which consists of a 1D microstrip waveguide with complementary electric resonator (cELC) elements patterned into the upper conductor.
Proceedings Article
Theory and Application of Motion Compensation for LFM-CW SAR
Evan Zaugg,David G. Long +1 more
TL;DR: The effects of nonideal motion on the SAR signal are derived, and new methods for motion correction are developed, which correct for motion during the pulse.
Journal ArticleDOI
A three-dimensional range migration algorithm for downward-looking 3D-SAR with single-transmitting and multiple-receiving linear array antennas
TL;DR: This paper presents a three-dimensional (3D) range migration algorithm (RMA) suitable for downward-looking 3D-SAR with single-transmitting and multiple-receiving linear array antennas (STMR-LAA) and a 3D wavenumber mapping is proposed to make the signal evenly sampled in 3Dwavenumber domain.
Journal ArticleDOI
Superresolution Downward-Looking Linear Array Three-Dimensional SAR Imaging Based on Two-Dimensional Compressive Sensing
TL;DR: A novel 3-D imaging algorithm based on 2-D compressive sensing that directly reconstructs the 2- D sparse signals on overcomplete dictionaries with separable atoms provides superresolution performance and reduces the storage of data acquisition and processing.
References
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Proceedings Article
A study of a 3D-SAR concept for a millimeter wave imaging radar onboard an UAV
R. Giret,H. Jeuland,P. Enert +2 more
TL;DR: In this article, a 3D SAR system for radar imagery onboard an UAV is presented, which combines a linear array of nadir pointing receivers, the SAR technique and employs linear frequency-modulated (LFM) pulse waveform.