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Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

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Synthetic-aperture-radar imaging with a solid-state laser.

T J Green, S Marcus, B D Colella

|November 10, 2010

Summary

This summary is machine-generated.

This study demonstrates an imaging radar using a neodymium-doped yttrium aluminum garnet (Nd:YAG) microchip laser. It achieved high-resolution 2-D imaging of military targets, surpassing traditional diffraction limits.

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Last Updated: Jun 6, 2026

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Implementation of a Coherent Anti-Stokes Raman Scattering (CARS) System on a Ti:Sapphire and OPO Laser Based Standard Laser Scanning Microscope

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Published on: July 17, 2016

Area of Science:

Optics and Photonics
Radar Technology
Materials Science

Background:

Traditional radar systems face limitations in spatial resolution due to diffraction.
Microchip lasers offer compact and efficient light sources for advanced imaging applications.
Synthetic-aperture radar (SAR) techniques enhance resolution by synthesizing a larger aperture.

Purpose of the Study:

To demonstrate the operational capability of an imaging Nd:YAG microchip-laser synthetic-aperture radar (SAR).
To evaluate the achieved spatial resolution compared to the diffraction limit.
To explore methods for generating high-resolution 2-D images in both dimensions.

Main Methods:

Utilized an imaging Nd:YAG microchip-laser system for SAR.
Imaged two-dimensional (2-D) models of military targets.
Employed signal processing techniques to analyze measurement sensitivity.
Implemented an asymmetric aperture to optimize resolution.

Main Results:

Achieved spatial resolution significantly exceeding the diffraction limit in the along-track dimension.
Predicted and experimentally verified measurement sensitivity.
Generated 2-D images with high resolution in both along-track and across-track dimensions.
Demonstrated successful imaging of military target models.

Conclusions:

Nd:YAG microchip-laser SAR is a viable technology for high-resolution imaging.
The system surpasses conventional diffraction limits in key dimensions.
Asymmetric aperture design is effective for achieving isotropic high resolution.