Results 21 to 30 of about 66,001 (272)

SYNTHETIC APERTURE RADAR (SAR) SIGNAL GENERATION

open access: yesProgress In Electromagnetics Research B, 2008
This paper outlines the trend of signal generation in synthetic aperture radar particularly chirp (linear FM signal) generation using digital approach. A study in fundamental of FM signal and typical analog FM signal generation is highlighted. Various signal generation in SAR using digital techniques is discussed and finally the some of the digital ...
Chan, Yee Kit, Lim, Soo Yong
openaire   +3 more sources

Exact spectrum of non-linear chirp scaling and its application in geosynchronous synthetic aperture radar imaging

open access: yesThe Journal of Engineering, 2013
Non-linear chirp scaling (NLCS) is a feasible method to deal with time-variant frequency modulation (FM) rate problem in synthetic aperture radar (SAR) imaging.
Chen Qi   +3 more
doaj   +1 more source

Motion measurement impact on synthetic aperture radar (SAR) geolocation

open access: yesRadar Sensor Technology XXV, 2021
Often a crucial exploitation of a Synthetic Aperture Radar (SAR) image requires accurate and precise knowledge of its geolocation, or at least the geolocation of a feature of interest in the image. However, SAR, like all radar modes of operation, makes its measurements relative to its own location or position.
Armin W. Doerry, Douglas L. Bickel
openaire   +3 more sources

New moving target Doppler centroid expression in geosynchronous SAR

open access: yesThe Journal of Engineering, 2019
Various techniques have been proposed in the literature to tackle the problem of moving target detection in the low-earth orbit synthetic aperture radar (LEO SAR) scenarios.
Mounir Melzi   +3 more
doaj   +1 more source

Differentiable SAR Renderer and SAR Target Reconstruction [PDF]

open access: yes, 2022
Forward modeling of wave scattering and radar imaging mechanisms is the key to information extraction from synthetic aperture radar (SAR) images. Like inverse graphics in optical domain, an inherently-integrated forward-inverse approach would be promising for SAR advanced information retrieval and target reconstruction.
arxiv   +1 more source

Curved-Path SAR Geolocation Error Analysis Based on BP Algorithm

open access: yesIEEE Access, 2019
The theoretical modeling and analysis of synthetic aperture radar (SAR) location error play an important role in SAR system design and error source budget.
Junbin Liu   +3 more
doaj   +1 more source

Autonomous Navigation Airborne Forward-Looking SAR High Precision Imaging with Combination of Pseudo-Polar Formatting and Overlapped Sub-Aperture Algorithm

open access: yesRemote Sensing, 2013
Autonomous navigation airborne forward-looking synthetic aperture radar (SAR) observes the anterior inferior wide area with a short cross-track dimensional linear array as azimuth aperture.
Xueming Peng   +4 more
doaj   +1 more source

Phaseless Radar Coincidence Imaging with a MIMO SAR Platform

open access: yesRemote Sensing, 2019
The correlation-based synthetic aperture radar imaging technique, termed radar coincidence imaging, is extended to a fully multistatic multiple-input multiple-output (MIMO) synthetic aperture radar (SAR) configuration.
Aaron V. Diebold   +2 more
doaj   +1 more source

Ultra-High Resolution Imaging Method for Distributed Small Satellite Spotlight MIMO-SAR Based on Sub-Aperture Image Fusion

open access: yesSensors, 2021
Small satellite synthetic aperture radar (SAR) has become a new development direction of spaceborne SAR due to its advantages of flexible launch, short development cycle, and low cost.
Fang Zhou   +4 more
doaj   +1 more source

Back projection algorithm modification for higher probability of moving target detection in SAR data processing [PDF]

open access: yesРадиофизика и электроника, 2020
Subject and Purpose. The paper is concerned with Synthetic Aperture Radar (SAR) imaging and data processing and seeks to modify the conventional time-domain back projection algorithm (BPA) used for creating a SAR image.
M.V. Balaban   +5 more
doaj   +1 more source

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