Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Reconstruction of Signal using Interpolation01:10

Reconstruction of Signal using Interpolation

Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next sampling...
Aliasing01:18

Aliasing

Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original signal...
Upsampling01:22

Upsampling

Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Boosting Ion Transport in MXene Films via In-Plane Nanopores and Embedded TiO<sub>2</sub> Nanoparticles: Toward Ultrafast Supercapacitors.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

A Deep Learning-Guided Ensemble Empirical Mode Decomposition Method for Single-Channel Fetal Electrocardiogram Extraction.

Sensors (Basel, Switzerland)·2026
Same author

Decipher-MR: a vision-language foundation model for 3D MRI representations.

NPJ digital medicine·2026
Same author

Low thermal stress and high-strength interface in brazing welding Nd:YAG-based advanced laser components.

RSC advances·2026
Same author

Multi-omics analysis reveals maternal gut microbiota-derived short-chain fatty acids and progesterone are associated with offspring birth weight in sows.

Frontiers in microbiology·2026
Same author

Ferroptosis Induction by Fenbendazole Combined With Photothermal Therapy Triggers Dual-Immunotherapy Against Bladder Cancer.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same journal

Mask-guided Asymmetric Contrastive and Semantic Alignment for Unsupervised Person Re-Identification.

IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026
Same journal

Hyperbolic Cycle Alignment for Infrared-Visible Image Fusion.

IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026
Same journal

Learning Gaze Synthesizer via 3D-eye Controlled Diffusion and Cross-domain Feature Alignment.

IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026
Same journal

Underlying Semantic Diffusion for Effective and Efficient In-Context Learning.

IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026
Same journal

DiffRES: Unleashing Text-to-Image Diffusion Models for Generative Referring Expression Segmentation without Information Leakage.

IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026
Same journal

Location Matters: Frequency-Spatial Dual Space Adaptation for Cross-Domain Few-Shot Segmentation.

IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026
See all related articles

Related Experiment Video

Updated: Jun 24, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
06:25

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 13, 2014

Enhanced resolution in Sar/ISAR imaging using iterative sidelobe apodization.

Xiaojian Xu1, Ram M Narayanan

  • 1School of Electronics and Information Engineering, Bei-Hang University, Beijing, 100083, China. xiaojianxu@buaa.edu.cn

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
|April 14, 2005
PubMed
Summary
This summary is machine-generated.

This study introduces an iterative sidelobe apodization method for radar imaging. The technique enhances resolution in synthetic aperture radar (SAR) and inverse SAR (ISAR) without complex interpolation.

More Related Videos

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
09:00

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

Implementation of a Nonlinear Microscope Based on Stimulated Raman Scattering
09:13

Implementation of a Nonlinear Microscope Based on Stimulated Raman Scattering

Published on: July 6, 2019

Related Experiment Videos

Last Updated: Jun 24, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
06:25

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 13, 2014

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
09:00

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

Implementation of a Nonlinear Microscope Based on Stimulated Raman Scattering
09:13

Implementation of a Nonlinear Microscope Based on Stimulated Raman Scattering

Published on: July 6, 2019

Area of Science:

  • Radar Imaging
  • Signal Processing

Background:

  • Resolution enhancement is crucial for radar imaging.
  • Existing techniques often require computationally intensive interpolation.

Purpose of the Study:

  • To develop an iterative sidelobe apodization technique for radar image resolution enhancement.
  • To apply the technique to synthetic aperture radar (SAR) and inverse SAR (ISAR) image processing.

Main Methods:

  • A modified noninteger Nyquist spatially variant apodization (SVA) formulation was developed.
  • An iterative sidelobe apodization procedure was refined for direct application.
  • The method avoids computationally intensive upsampling interpolation.

Main Results:

  • Enhanced image resolution was demonstrated in airborne SAR imaging.
  • Improved processing for 3D interferometric ISAR imaging was achieved.
  • Effectiveness in foliage-penetration ultrawideband SAR was shown.

Conclusions:

  • The proposed iterative sidelobe apodization technique effectively enhances radar image resolution.
  • The method offers a computationally efficient alternative for SAR and ISAR processing.
  • It shows broad applicability across various advanced radar imaging scenarios.