Visualizing Small Objects Using Amplitude-Modulated Laser Light at Microwave Frequencies
Source abstract
Abstract
We reported on laboratory imaging experiments conducted using a system that utilizes amplitude-modulated infrared laser light at microwave frequencies. With modulations ranging from 11.1 to 15.1 GHz on a 1.55 μm near-infrared laser, the phase measurements of the modulation signals revealed a target shape with sub-mm precision. We also tested whether our system is able to achieve cross-range resolution in the spot-light mode synthetic aperture scheme. With the aid of “position-compensated signal processing”, synthetic aperture images were formed successfully. According to predications based on the principle of normal synthetic aperture radar, the spatial resolutions of the images were shown to be inversely proportional to the width of the collected data placed in the wavenumber space.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced Optical Sensing Technologies · Optical Coherence Tomography Applications · Photoacoustic and Ultrasonic Imaging
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculty of Engineering, Fukuoka Institute of Technology, Fukuoka 811-0295, Japan
Graduate School, Fukuoka Institute of Technology, Fukuoka 811-0295, Japan
Global Innovation Center, Kyushu University, Kasuga 816-8580, Japan
Department of Electrical Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8577, Japan
Funding
JSPS KAKENHI
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Show source-provided references
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