Night-Time Detection of Subpixel Emitters with VIIRS Mid-Wave Infrared Bands M12–M13

Upconversion based continuous-wave mid-infrared detection

We present theoretical and experimental work on upconversion based mid-wavelength infrared detection using silicon detectors without the need for cryogenic cooling. We consider both multi-spectral imaging and point spectroscopy targeting several specific applications. OCIS codes: (190.7220) Upconversion; (300.6340) Spectroscopy, infrared; (100.2960) Image analysis;

Improving Nocturnal Fire Detection With the VIIRS Day-Night Band

Characterization of NPP Visible/Infrared Imager Radiometer Suite (VIIRS) reflective solar bands dual gain anomaly

The Visible/Infrared Imager Radiometer Suite (VIIRS) contains six dual gain bands in the reflective solar spectrum. The dual gain bands are designed to switch gain mode at pre-defined thresholds to achieve high resolution at low radiances while maintaining the required dynamic range for science. During pre-launch testing, an anomaly in the electronic response before transitioning from high to l...

VIIRS Nightfire: Satellite Pyrometry at Night

The Nightfire algorithm detects and characterizes sub-pixel hot sources using multispectral data collected globally, each night, by the Suomi National Polar Partnership (NPP) Visible Infrared Imaging Radiometer Suite (VIIRS). The spectral bands utilized span visible, near-infrared (NIR), short-wave infrared (SWIR), and mid-wave infrared (MWIR). The primary detection band is in the SWIR, centere...

Night Time Detection of Vehicles

This paper presents results of a study carried out to count and classify vehicles in video sequences of traffic scenes captured from a fixed digital camera under night conditions. The vehicle identification has been carried out using the headlights, which may be the only key feature available to identify vehicles under low light conditions through visible light. Due to lack of features, the veh...