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HAPS High Altitude Platform System
HDF Hierarchical Data Format
HDFS High Density Fixed Service
HDFSS High Density Fixed Satellite Systems
HDR High Data Rate
HEO Highly Elliptical Orbit
HES Hyperspectral Environmental Suite (GOES, NOAA)
HiRID High Resolution Imager Data
HIRS High Resolution Infrared Sounder
HLPP (CGMS) High Level Priority Plan
HR High Resolution
HRD High Rate Data (NPOESS, USA)
HRDCP High Rate DCP
HRPT High Rate Picture Transmission
HSRS High Spectral Resolution Sounder (MSG)
HWR Hydrology and Water Resource Programme (WMO)
HYDROS Hydrosphere State Mission (NASA)