STAR Integrated Calibration/Validation System website

STAR ICVS Long-Term Monitoring

STAR ICVS LTM System Schematic Chart


At NOAA/STAR, we have developed an operational Integrated Calibration and Validation system (ICVS) Long-Term Monitoring (LTM) (ICVS-LTM) System to provide near real-time (NRT) environmental satellite performance and scientific data quality monitoring.


ICVS is expected to bring together all operational satellite instruments from Suomi National Polar-orbiting Partnership (SNPP), Joint Polar Satellite System (JPSS), NOAA legacy Polar Operational Environmental Satellites (POES), and Geostationary Operational Environmental Satellites (GOES), and make the radiances highly traceable among a constellation of global satellites in both polar and geostationary orbits.

ICVS LTM Objective

Establish an ICVS LTM platform for SNPP, JPSS, NOAA legacy POES instrument performance and data quality monitoring in NRT mode to support NOAA, especially JPSS SDR and EDR Cal/Val missions.

ICVS LTM Key Components

  1. On-orbit and prelaunch instrument characterization and long-term monitoring of instrument performance for JPSS and legacy POES.
  2. Top instrument and SDR product quality matrices for JPSS ATMS, VIIRS, OMPS and CrIS.
  3. Inter-satellite calibration of radiances using the simultaneous nadir overpass (SNO), double difference (DD), and 32-day running mean direct bias methods.