Results 1 to 10 of about 1,621,597 (207)

Research on Configuration Constraints of Airborne Bistatic SARs [PDF]

open access: yesSensors, 2022
Based on the analysis of the airborne bistatic synthetic aperture radar (SAR) imaging geometric mode, an extended nonlinear chirp scaling algorithm is employed to simulate and verify the imaging effect of the bistatic SARs.
Yidi Chen   +5 more
doaj   +2 more sources

Relativistic Effects in Bistatic Synthetic Aperture Radar [PDF]

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2014
This paper addresses relativistic effects in bistatic and multistatic synthetic aperture radar (SAR) systems and missions. It is shown that the use of different reference frames for bistatic SAR processing and bistatic radar synchronization is prone to notable phase and time errors.
Francesco de Zan, Gerhard Krieger
exaly   +2 more sources

Echo Model Analysis and Frequency-Domain Imaging Algorithm for Geosynchronous Spaceborne–Airborne FMCW Bistatic SAR with High-Maneuvering Receiver [PDF]

open access: yesJournal of Imaging
Geosynchronous spaceborne–airborne frequency-modulated continuous-wave bistatic synthetic aperture radar (GEO SA FMCW BiSAR) offers cost-effective and persistent target monitoring. However, both the maneuvers of the receiver during the signal propagation
Xinyu Liu   +4 more
doaj   +2 more sources

Bistatic Synthetic Aperture Radar Imaging for Arbitrary Flight Trajectories [PDF]

open access: yesIEEE Transactions on Image Processing, 2008
In this paper, we present an analytic, filtered backprojection (FBP) type inversion method for bistatic synthetic aperture radar (BISAR). We consider a BISAR system where a scene of interest is illuminated by electromagnetic waves that are transmitted, at known times, from positions along an arbitrary, but known, flight trajectory and the scattered ...
Margaret Cheney   +2 more
exaly   +4 more sources

Bistatic Synthetic Aperture Radar Imaging Using UltraNarrowband Continuous Waveforms [PDF]

open access: yesIEEE Transactions on Image Processing, 2012
We consider synthetic aperture radar (SAR) imaging using ultra-narrowband continuous waveforms (CW). Due to the high Doppler resolution of CW signals, we refer to this imaging modality as Doppler Synthetic Aperture Radar (DSAR). We present a novel model and an image formation method for the bistatic DSAR for arbitrary imaging geometries.
Ling Wang, Birsen Yazici
exaly   +4 more sources

Passive Bistatic Ground-Based Synthetic Aperture Radar: Concept, System, and Experiment Results

open access: yesRemote Sensing, 2019
A passive bistatic ground-based synthetic aperture radar (PB-GB-SAR) system without a dedicated transmitter has been developed by using commercial-off-the-shelf (COTS) hardware for local-area high-resolution imaging and displacement measurement purposes.
Weike Feng   +5 more
doaj   +3 more sources

Cross-Pol Transponder with Frequency Shifter for Bistatic Ground-Based Synthetic Aperture Radar

open access: yesRemote Sensing, 2018
Ground-based synthetic aperture radar (GBSAR) systems are popular remote sensing instruments for detecting the ground changes of landslides, glaciers, and open pits as well as for detecting small displacements of large structures, such as bridges and ...
Massimiliano Pieraccini, Lapo Miccinesi
doaj   +3 more sources

Synchronization for mini‐UAV‐based high‐resolution BiSAR systems: Lost direct signal estimation based on Hampel filtering

open access: yesElectronics Letters, 2022
In mini‐unmanned aerial vehicle‐based high‐resolution bistatic synthetic aperture radar systems, the rotation of the unmanned aerial vehicle platforms will cause direct signal loss, resulting in the reduction of synchronization error compensation ...
Zhanze Wang   +3 more
doaj   +1 more source

UAV-Based Bistatic SAR-Imaging Using a Stationary Repeater

open access: yesIEEE Journal of Microwaves, 2023
Synthetic aperture radar (SAR) is an established technique for high-resolution radar imaging relying on the ego-motion of the radar. The long coherent integration time of the radar in conjunction with a linear or circular trajectory enables the ...
Alexander Grathwohl   +4 more
doaj   +1 more source

Baseline Calibration of L-Band Spaceborne Bistatic SAR TwinSAR-L for DEM Generation

open access: yesRemote Sensing, 2023
The Terrain Wide-swath Interferometric L-band Synthetic Aperture Radar (TwinSAR-L) mission is a spaceborne bistatic synthetic aperture radar (SAR) mission to derive a high-quality global digital elevation model (DEM).
Jingwen Mou   +4 more
doaj   +1 more source

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