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Updated: May 29, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

A multiple height-transfer interferometric technique.

Hao Yu¹, Carl Aleksoff, Jun Ni

¹Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, 48105, USA. haoyu@umich.edu

|September 22, 2011

Summary

This summary is machine-generated.

This study introduces a novel interferometric technique for precise large step height measurement. The method utilizes multiple reference heights to bypass wavelength calculations, achieving sub-micron accuracy over 100 mm in workshop settings.

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Area of Science:

Metrology
Optical Interferometry
Precision Measurement

Background:

Conventional multiple wavelength interferometry needs precise wavelength data for step height measurement.
Wavelength scanning interferometry is constrained by its mode-hop-free tuning range.

Purpose of the Study:

To develop a new interferometric technique for accurate large step height measurement.
To overcome limitations of existing interferometric methods.

Main Methods:

Proposed a multiple height-transfer interferometric technique.
Integrated concepts from multiple wavelength and wavelength scanning interferometry.
Employed a multiple height calibration artifact for experimental validation.

Main Results:

Demonstrated large step height measurement capability.
Achieved measurement accuracy better than 1 micron over a 100 mm range.
Successfully bypassed the need for explicit wavelength determination.

Conclusions:

The proposed multiple height-transfer interferometric technique enables accurate large step height measurement.
The method offers a practical solution for precision metrology in workshop environments.