Egrett
Grob G-520 Egrett

This data will be added in future versions

This data will be added in future versions

The Total Direct Diffuse Radiometer (TDDR) is a passive radiometer that measures solar irradiance. It can be used for airborne and ground-based operations. TDDR measures total and diffuse irradiance by rotating a shadow arm before the radiometer. These measurements can be used to calculate the direct solar irradiance. TDDR operates across the 0.38-1.6 μm spectral range with a 0.01 μm bandwidth.

The Fractional Solar Broadband Radiometer (FSBR) is an airborne broadband radiometer that is typically used as part of the Radiation Measurement System (RAMS) instrument suite. It measures fractional downwelling shortwave radiation. FSBR covers a portion of the near-infrared spectrum between 0.68 and 3.3 µm and has a data frequency of 9 Hz. FSBR can be deployed on ground-based platforms as well and is a complementary instrument to the Total Solar Broadband Radiometer (TSBR).

The Radiation Measurement System (RAMS) is an airborne passive radiometer that measures broadband solar irradiance. RAMS consists of two radiometers: the Total Solar Broadband Radiometer (TSBR) and the Fractional Solar Broadband Radiometer (FSBR). The TSBR operates in the 0.224 to 3.91 μm range while the FSBR operates between 0.68 to 3.3 μm. It has a response time of about 60 msec and can provide measurements about every 5 m for aircraft speeds around 75 m/s. RAMS is typically used for airborne operations, but it can be used to collect ground-based measurements as well.