Second-generation Global Imager (SGLI) has a multi-channel in the wavelength range from near-UV to thermal infrared. SGLI consists of two sensor units, Visible and Near Infrared Radiometer (VNR) and Infrared Scanning Radiometer (IRS). We use three integrating spheres for each wavelength range in radiometric tests. The materials of inside wall of sphere are polytetrafluoroethylene (PTFE) and barium sulfate for ultraviolet-visible to near infrared channels, and gold for shortwave infrared channels, respectively. This paper describes the Proto Flight Model (PFM) radiometric performance using these integrating spheres.
The Second-generation Global Imager (SGLI) is a mission instrument on the Global Change Observation Mission-Climate (GCOM-C) satellite. The SGLI includes two radiometers, the Visible and Near Infrared Radiometer (VNR) and Infrared Scanning Radiometer (IRS). The VNR is a multi-band optical imaging radiometer observing at wavelength range from 380 nm to 868.5 nm, including non-polarization and polarization observation. The test of the instruments consisting of VNR-SRU (Scanning Radiometer Unit) PFM (Proto-Flight model) has been finished, and the VNR-SRU PFM is under the phase of assembly and test. This paper describes the test result of the VNR-SRU PFM.
The proto-flight test (PFT) of Infrared Scanning Radiometer (IRS) started in December 2014 to confirm the sensor performance. IRS is one of the two sensor units of Second Generation Global Imager (SGLI) on GCOM-C satellite. IRS has six optical channels from 1.1micron to 12 micron, corresponds to Short Wave Infrared (SWI) and Thermal Infrared (TIR) observation requirements of GCOM-C mission. The GCOM-C is planned for launch in 2017. This paper describes the SGLI-IRS test status.
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