First, the word SWIR (pronounced ‘sweer’) is an acronym meaning Short Wavelength InfraRed, also frequently referred to as shortwave infrared. SWIR generally refers to the wavelength band of light between 900nm and 2500nm. Since standard silicon sensors have an upper limit of approximately 1000n...
Indium gallium arsenide (InGaAs) is a material often used for SWIR imaging due to its highHansen, MPhotonics Online the Photonics Solutions UpdateHansen, M., 2009. What you should ask before investing in a shortwave infrared (SWIR) lens. Tech. rep., Photonics Online, 2591 Wexford-Bayne Road...
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Medical professionals often use microwavediathermyequipment, which produces electromagnetic radiation that generates heat in body tissues. It one of the commonly used types of diathermy, which also includes shortwave diathermy andultrasound. Trained personnel generally use diathermy as only one of the compo...
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Humans are able to observe the Earth with an unbroken record since the 1972, which is unprecedented for Earth observation satellites. NASA is responsible for developing the space and launch segments. They build, launch, and perform the on-orbit checkout for the Landsat satellites. ...
HS sensors can be further categorized according to their spectral sensitivities to visible and NIR (VNIR: 400–1000 nm), NIR (1000–1700 nm), shortwave-infrared (SWIR: 1000–2500 nm), mid-wave infrared (MWIR: 3–5 µm) and long wave infrared (LWIR: 7–12 µm) (...
The electromagnetic spectrum consists of many subranges of frequency bands, such as radio waves, microwaves, X-rays,infraredrays and gamma rays. Each subrange falls under a specific frequency band. The ITU helps regulate the transmission of frequency bands along with any regulatory laws of the cou...
There’s not yet a means of measuring which regions are likely to suffer more extreme damage prior to a wildfire, but looking at changes in near-infrared and shortwave-infrared data over time with a technique known as a normalized burn ratio can indicate the severity of a wildfire after the...
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