نتایج جستجو برای: fourier transform spectrometer
تعداد نتایج: 158717 فیلتر نتایج به سال:
A new design of laser warning system is proposed. This novel system is composed of an optical antenna based on fiber bundle and a spatially modulated stationary Michelson interferometer as Fourier transform device. The interferometer has no moving parts, which can distinguish laser from background noise and from other non-coherent radiation such as flares, sunlight, and lighting. Based on Fouri...
An FT-IR Spectrometer is an instrument which acquires broadband NIR to FIR spectra. Unlike a dispersive instrument, i.e. grating monochromator or spectrograph, an FT-IR Spectrometer collects all wavelengths simultaneously. This feature, called the Multiplex or Felgett Advantage, is discussed in detail on page 3. FT-IR Spectrometers are often simply called FT-IRs. But for the purists, an FT-IR (...
The Tropospheric Emission Spectrometer (TES) is an imaging infrared Fourier transformspectrometer scheduled to be launched into polar sun-synchronous orbit on the Earth ObservingSystem (EOS) CHEMISTRY 1 satellite in December 2002. We describe how the overall missionobjectives flow down to the specific science and measurement requirements and how, in turn,these are implemented in...
A medium-resolution Fourier-transform spectrometer for ground-based observation of astronomical sources at near-millimeter and submillimeter wavelengths is described. The steps involved in measuring and calibrating astronomical spectra are elaborated. The spectrometer is well suited to planetary spectroscopy, and initial measurements of the intrinsic brightness temperature spectra of Uranus and...
In this paper, we report a novel, miniature Fourier transform spectrometer with a linear architecture that works by sampling a standing wave. The spectrometer consists of an electrostatically actuated microelectromechanical mirror with on-resonance displacement of up to 65 m, a thin-film photodetector, and an electrical back plane for actuating the mirror. The integrated device offers mirror st...
Infrared imaging spectrometry is utilized to detect and identify targets by collecting spectral images. In some cases, the infrared images of dynamic need be detected accurately, such as during remote sensing target tracking engine tail flame detection applications. However, it difficult obtain reliable measurement results when using a traditional spectrometer with scanning structure because mo...
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