VIIRS High Rate Data (HRD) Broadcast
About the VIIRS HRD Broadcast
VIIRS stores data on board for later download, but it also broadcasts the HRD it collects immediately, on the chance that someone on the ground below is listening. NASA/GSFC has the antennas and other equipment necessary to receive and process VIIRS HRD whenever the spacecraft is above the horizon. The Overpass Predictor can be used to determine when there will be an SNPP or JPSS-1 spacecraft overpass of NASA/GSFC (Greenbelt, MD) or any other location that may have a VIIRS HRD receiving station.
About the Images
The images are built from multiple VIIRS bands that collect visible light during daytime, and infrared light at night. The images shown have a resolution of 1 kilometer per pixel at nadir (the picture centerline). The height depends on the length of the overpass, but generally exceeds 3600 pixels.