Long distance active hyperspectral sensing using high-power near-infrared supercontinuum light source

Area of Science:

• Optics and Photonics
• Remote Sensing Technology
• Spectroscopy

Background:

• Hyperspectral imaging offers detailed spectral information for target identification.
• Active illumination systems are crucial for remote sensing in various environmental conditions.
• Developing compact and efficient light sources is key for portable hyperspectral instruments.

Purpose of the Study:

• To develop and assess a novel hyperspectral remote sensing instrument.
• To utilize a near-infrared supercontinuum light source for active target illumination.
• To demonstrate the instrument's capability for broadband infrared detection and measurement.

Main Methods:

• Generation of a supercontinuum light source in a multi-mode fiber (1000-2300 nm).
• Integration of a 16 W supercontinuum source with a commercial 256-channel infrared spectrometer.
• Field and indoor testing of the hyperspectral measurement approach on diffusive targets.

Main Results:

• Successful broadband infrared detection (1000-2300 nm) was achieved.
• Reflection spectra from various diffusive targets were accurately measured.
• A significant measurement range of 1.5 km was demonstrated in field tests.

Conclusions:

• The developed hyperspectral instrument is feasible for active remote sensing applications.
• The novel supercontinuum light source enables effective target illumination and identification.
• The system shows potential for long-range spectral measurements in diverse environments.