Remote sensing

SPECTROSCOPY

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A variety of spectroscopic techniques is used in gas analysis and sensing – increasingly important fields, crucial in atmosphere monitoring, emission control and industrial processes efficiency.

Thermal Infrared hyperspectral imaging for the detection, Identification, and quantification of Industrial stack gas emissions

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Thermal infrared hyperspectral imaging is well suited for the detection, identification, and quantification of industrial stack gas emissions. This application note describes a measurement campaign performed at the Port of Rotterdam with the Telops Hyper-Cam, a commercial high-performance, FTIR-based hyperspectral imaging instrument. Principles of gas detection, quantification, and identification are discussed and computed mass-flow rate results are presented from data acquired at a commercial alkene production facility.

LASER GAS LEAK DETECTION WITH INFRARED

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High progress in optoelectronics technology, especially designed for infrared wavelength region (IR), is observed. The use of various spectroscopic methods allows to obtain detailed information on the chemical analysis of the leaking gas. Each of the spectroscopy methods is dedicated to different types of concentration measurements. We encourage you to read the article that explains and presents laser gas leak detection with infrared.

Artist’s impression of the Solar Orbiter, with the Spice spectrometer (ESA/ATG medialab)

Spectroscopy to probe the Sun in greater detail

A proposal to use a high-resolution multi-slit spectrometer to obtain high-cadence observations of the Sun’s atmosphere, the corona, has been selected by Nasa

Optical sensor drones fly into danger

Powered predominantly by lidar, plus spectroscopy and visual-wavelength imaging, Andy Extance discovers unmanned aerial vehicles can safely survey hazardous environments

The dividend of the spectrum

Imaging spectroscopy offers a powerful way to understand this world and others, and optical innovations are enhancing its capabilities, finds Andy Extance

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