environmental monitoring

A line of green laser pulses captured by an observatory camera over Mauna Kea, Hawaii, have been met with alarm in some circles online

What caused the 'mystery' green laser wall in Hawaii?

A wall of ‘mystery’ green laser pulses captured by a camera at the Mauna Kea Observatories in Hawaii has been making headlines worldwide

OroraTech’s Forest-1 nanosatellite carries a thermal infrared detector to detect wildfires in low Earth orbit. Image: OroraTech

Lasers and sensors offer bird’s eye view on climate change

In orbit, in the air or even on the ground, photonics technologies give us a precise big picture on climate change, discovers Ben Skuse

OSK claims itself to be the first US-based commercial company to launch a fleet of persistent space-based satellite platforms equipped with best-in-class hyperspectral sensors (Image: Nvidia)

Satellites to monitor gas pipelines for leaks using hyperspectral imaging

The technology will help the oil & gas industry meet its compliance and regulatory obligations, as well as help transition towards more sustainable operations

Preliminary testing of the quantum gravity gradiometer designed by Michael Holynski and colleagues at the University of Birmingham, which has now been shown to locate an underground tunnel with a positional accuracy of 20cm. Credit: Crown Copyright

Underground quantum sensing set to erupt

Susan Curtis explores the new breed of quantum gravimeters finding their way onto the slopes of Mount Etna and into tunnels deep under Birmingham

Mathias Bochow, GFZ Helmholtz Centre, Potsdam, is working on the Trace project to track marine plastic. Credit: Frank Schweikert, Aldebaran Marine Research & Broadcast  (www.aldebaran.org/en/)

The hyperspectral view from space

Abigail Williams speaks to scientists tracking marine plastic using satellite spectral imagery

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.

Investment is making lidar more accessible and cost-effective for the autonomous driving sector

The driving force behind autonomous vehicles

Keely Portway delves into some of the latest lidar developments for self-driving vehicles, and how these are proving beneficial in other applications


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