The Special Sensors-Ions, Electrons, and Scintillation (SSIES) thermal plasma analysis package is a suite of instruments built by the Center for Space Sciences at the University of Texas at Dallas and flown on a number of the DMSP satellites. SSIESS includes a Retarding Potential Analyzer (RPA), Ion Drift meter (IDM), scintillation meter, and Langmuir probe.

The Special Sensors-Ions, Electrons, and Scintillation (SSIES) thermal plasma analysis package is a suite of instruments built by the Center for Space Sciences at the University of Texas at Dallas and flown on a number of the DMSP satellites. SSIESS includes a Retarding Potential Analyzer (RPA), Ion Drift meter (IDM), scintillation meter, and Langmuir probe.

The Special Sensors-Ions, Electrons, and Scintillation (SSIES) thermal plasma analysis package is a suite of instruments built by the Center for Space Sciences at the University of Texas at Dallas and flown on a number of the DMSP satellites. SSIESS includes a Retarding Potential Analyzer (RPA), Ion Drift meter (IDM), scintillation meter, and Langmuir probe.

The Special Sensors-Ions, Electrons, and Scintillation (SSIES) thermal plasma analysis package is a suite of instruments built by the Center for Space Sciences at the University of Texas at Dallas and flown on a number of the DMSP satellites. SSIESS includes a Retarding Potential Analyzer (RPA), Ion Drift meter (IDM), scintillation meter, and Langmuir probe.

The Special Sensors-Ions, Electrons, and Scintillation (SSIES) thermal plasma analysis package is a suite of instruments built by the Center for Space Sciences at the University of Texas at Dallas and flown on a number of the DMSP satellites. SSIESS includes a Retarding Potential Analyzer (RPA), Ion Drift meter (IDM), scintillation meter, and Langmuir probe.

Precipitating Electrons And ions observed at nominally 850 km Altitude and over a Range of Energies from 30 eV to 30 keV by using the Special Sensor J, SSJ, Instrument. Please contact Rob.Redmon@noaa.gov with Questions and Comments. Many Individuals made Important Contributions including: D. Hardy, E. Holeman, F. Rich, D. Ober, G. Wilson, J. Machuzak, K. Kadinsky-Cade, J. McGarity, W.F. Denig, K. Martin, R. Redmon, D. Knipp, L. Kilcommons.

Precipitating Electrons And ions observed at nominally 850 km Altitude and over a Range of Energies from 30 eV to 30 keV by using the Special Sensor J, SSJ, Instrument. Please contact Rob.Redmon@noaa.gov with Questions and Comments. Many Individuals made Important Contributions including: D. Hardy, E. Holeman, F. Rich, D. Ober, G. Wilson, J. Machuzak, K. Kadinsky-Cade, J. McGarity, W.F. Denig, K. Martin, R. Redmon, D. Knipp, L. Kilcommons.

Precipitating Electrons And ions observed at nominally 850 km Altitude and over a Range of Energies from 30 eV to 30 keV by using the Special Sensor J, SSJ, Instrument. Please contact Rob.Redmon@noaa.gov with Questions and Comments. Many Individuals made Important Contributions including: D. Hardy, E. Holeman, F. Rich, D. Ober, G. Wilson, J. Machuzak, K. Kadinsky-Cade, J. McGarity, W.F. Denig, K. Martin, R. Redmon, D. Knipp, L. Kilcommons.

The SSM/T-2 sensor is a five channel, total power microwave radiometer with three channels situated symmetrically about the 183.31 GHz water vapor resonance line and two window channels. This instrument was flown on all DMSP Block 5D-2 satellites starting with F11 launched in 1991. SSM/T-2 is designed to provide global monitoring of the concentration of water vapor in the atmosphere under all sky conditions by taking advantage of the reduced sensitivity of the microwave region to cloud attenuation.

THEMIS-D: The Solid State Telescope (SST) measures the incoming intensity (flux per solid angle) of superthermal electrons and ions. The spacecraft is fitted with two units (heads), each SST unit has two pairs of opposing ion and electron sensors. Each single sensor covers an angle of 36 degrees. The units are oriented such that one pair is always centered in the rotation plane, the other oriented at a maximum angle of 54 degrees off the plane. Each pair of units are oriented opposite each other allowing both ion and electron sensors to sweep out a maximum of 92% of the sky (45x45 degree required Elevation by Azimuth FOV, 108x22 raw) . The ion and electron sensors primarily measure particles between 30-300 keV and 30-100 keV respectively with a maximum capability of 20-6000 keV and 25-1000 keV. Full distribution data is measured over 128 angles and 16 energy bins, reduced distribution uses 6 angles and 16 energy bins, and burst mode data has 64 angles in 16 energy bins. Matched and paired electron broom magnets produce quadrapole fields reducing magnetic contamination. A mechanical attenuator is used to increase the instruments dynamical range avoiding oversaturation near the plasma sheet edge.