Results 41 to 50 of about 12,852 (148)

Ship Target Imaging in Airborne SAR System Based on Automatic Image Segmentation and ISAR Technique

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The airborne synthetic aperture radar (SAR) image of ship target will be blurred for the complex motion of the target, which will influence the performance of feature extraction and target classification.
Rui Cao, Yong Wang, Bin Zhao, Xiaofei Lu
doaj   +1 more source

OFDM-ISAR Sparse Optimization Imaging and Motion Compensation

open access: yesLeida xuebao, 2016
Orthogonal Frequency Division Multiplexing (OFDM) technology has been utilized in radar imaging to obtain high-resolution range profiles without inter-range cell interference.
Wu Min   +3 more
doaj   +1 more source

Multibeam single frequency synthetic aperture radar processor for imaging separate range swaths [PDF]

open access: yes, 1982
A single-frequency multibeam synthetic aperture radar for large swath imaging is disclosed. Each beam illuminates a separate ""footprint'' (i.e., range and azimuth interval).
Jain, A.
core   +1 more source

FMCW rail-mounted SAR: Porting spotlight SAR imaging from MATLAB to FPGA [PDF]

open access: yes, 2014
In this work, a low-cost laptop-based radar platform derived from the MIT open courseware has been implemented. It can perform ranging, Doppler measurement and SAR imaging using MATLAB as the processor.
Gray, D., Le Kernec, J., Melnikov, A.
core   +1 more source

Experimental Research on Interferometric Inverse Synthetic Aperture Radar Imaging with Multi-Channel Terahertz Radar System

open access: yesSensors, 2019
The all solid-state terahertz (THz) radar has obvious miniaturized integration and high resolution imaging advantages compared with conventional microwave radar.
Ye Zhang   +4 more
doaj   +1 more source

Pipelined digital SAR azimuth correlator using hybrid FFT-transversal filter [PDF]

open access: yes, 1984
A synthetic aperture radar system (SAR) having a range correlator is provided with a hybrid azimuth correlator which utilizes a block-pipe-lined fast Fourier transform (FFT).
Liu, K. Y., Wu, C.
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

Envelope Correction of Micro-Motion Targets in the Terahertz ISAR Imaging

open access: yesSensors, 2018
Motion compensation is a crucial step to inverse synthetic aperture radar imaging, and envelope correction is the foundation of motion compensation.
Qi Yang   +4 more
doaj   +1 more source

Microwave radiation imaging using inverse synthetic aperture radar technique

open access: yesElektronika ir Elektrotechnika, 2015
Double-ridged horn antennas were used in ultra wideband radar system to create microwave radiation images. The images were obtained using inverse synthetic aperture radar technique. Transfer function of the calibrated radar system was close to one up to 22 GHz.
Steponas Ašmontas   +4 more
openaire   +1 more source

Two Dimensional Array Imaging with Beam Steered Data

open access: yes, 2013
This paper discusses different approaches used for millimeter wave imaging of two-dimensional objects. Imaging of a two dimensional object requires reflected wave data to be collected across two distinct dimensions.
Patole, Sujeet, Torlak, Murat
core   +1 more source

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