TELOPS Articles & Applications Notes

  1. Airborne Thermal Infrared Hyperspectral Imaging For Mineral Mapping

    In order to illustrate the benefits of thermal infrared hyperspectral imaging (HSI) for mineral mapping, an airborne survey was carried out over an open-pit mine in the Thetford Mines (Qc, Canada) area. The results show how high spectral resolution data facilitates temperature emissivity separation (TES) and atmospheric correction in order to retrieve a thermodynamic temperature map of the area and its associated spectral emissivity datacube. Mineral mapping of various minerals such as lizardite, serpentinite, and quartz was achieved through linear unmixing of the emissivity data using reference emissivity curves found in spectral libraries. The results illustrate the potential of TIR HSI for airborne mapping of silicate minerals.

  2. Thermal Infrared Multispectral Imaging Of Minerals

    For years, scientists have used thermal broadband cameras to perform target characterization in the longwave (LWIR, 8-12 µm) and midwave (MWIR, 3-5 µm) infrared. The analysis of broadband imaging sequences typically provides energy, morphological and/or spatiotemporal information.

  3. Time-Resolved Infrared Multispectral Imaging of Gases

    This application note discusses how Telops improved on the nature of gaseous studies through developing a multispectral imaging system that allows 8-channel synchronized acquisition at high frame rates.

  4. Airborne Midwave Infrared Mapping For Environmental Monitoring Applications

    Gas emissions from industrial plants located near residential areas can seriously impact the quality of life in these neighbourhoods. Airborne infrared hyperspectral imaging, in the midwave spectral range (3-5 um), was carried out over different operating plants in order to characterize the gas plume coverage as well as the chemical nature of emission constituents. Water vapor (H2O) was discriminated from an aerosol cloud formed upon condensation of the water vapor in the gas emissions coming from a waste incinerator and a paper mill. Quantitative chemical imaging of carbon monoxide (CO) and carbonyl sulfide (OCS) gas, emitted from an aluminum smelter plant, was successfully carried out illustrating the versatility of this technique for environmental monitoring applications.

  5. How To Increase Production Rate Without Compromising Product Quality

    For most world-leading manufacturers, product defects and low quality are unacceptable. Deployment of infrared vision systems is among the most efficient and promising solutions to quickly identify manufacturing defects on the production line and to immediately sort and reject faulty materials. The real-time inspection of goods using modern high-speed infrared imaging systems is not only limited to finding defects, but  it also provides key information pertaining to the output quality from automated assembly and production systems. Because of their great sensitivity (down to few mK), high-speed infrared cameras now allow for real-time detection of defects and trending with unprecedented efficiency. By Frederick Marcotte, Telops Inc.

  6. Airborne Detection of Chemical Powders Using Infrared Hyperspectral Imaging

    Applications involving maritime surveillance, border protection, homeland security, and command and control typically use airborne surveillance to detect various types of targets in order to determine shapes, temperatures, or chemical nature.

  7. FAST Thermal Imaging – The New Way to Look at Explosions

    This application explores the use of a high speed, high performance infrared camera used to analyze dust cloud explosions. These types of explosions can occur in work areas where coal, flour, pollen, and powdered metal are present. To find out how infrared cameras can be used to study the ignition, explosion, propagation phenomologies, and other thermodynamic processes in dust cloud explosions, and to ultimately help prevent such explosions, download the application note.

  8. Airborne Infrared Hyperspectral Imager For Intelligence, Surveillance And Reconnaissance Applications

    Persistent surveillance and collection of airborne intelligence, surveillance and reconnaissance information is critical in today’s warfare against terrorism. High resolution imagery in visible and infrared bands provides valuable detection capabilities based on target shapes and temperatures. By Eldon Puckrin, Caroline S. Turcotte, Marc-André Gagnon, John Bastedo, Vincent Farley and Martin Chamberland

  9. Countermeasure Characterization And Development Using Standoff Infrared Hyperspectral Imaging

    Measurement and signature intelligence (MASINT) is a cornerstone of most military agencies, in which chemical imaging using infrared is considered a method of choice. In such applications, hyperspectral imaging brings additional information to the task, providing the spectral dimension associated with each image. Standoff infrared hyperspectral sensors using Fourier transform (FTIR) spectroscopy can deliver a unique combination of spatial, spectral, and temporal resolution for a complete characterization. By Marc-André Gagnon, Telops

  10. Target Infrared Signature Characterization

    This application note discusses electronic attack and countermeasures, the importance of advanced measurement and signal intelligence (MASINT) capabilities, and how Telops’ line of Hyper-Vision hyperspectral imagers can help characterize dynamic targets and classify a variety of target infrared signatures in the electronic warfare space.