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Title: JMR noise diode stability and recalibration methodology after three years on-orbit
Authors: Brown, Shannon
Desai, Shailen
Keihm, Stephen
Ruf, Christopher
Keywords: Jason Microwave Radiometer (JMR)
Jason 1
alimeter signal
Issue Date: 28-Feb-2006
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2006.
Citation: IEEE Microrad 2006, San Juan , Puerto Rico, February 28 thru March 3, 2006
Abstract: The Jason Microwave Radiometer (JMR) is included on the Jason-1 ocean altimeter satellite to measure the wet tropospheric path delay (PD) experienced by the radar altimeter signal. JMR is nadir pointing and measures the radiometric brightness temperature (T<subscript>B) at 18.7,23.8 and 34.0 GHz. JMR is a Dicke radiometer and it is the first radiometer to be flown in space that uses noise diodes for calibration. Therefore, monitoring the long term stability of the noise diodes is essential. Each channel has three redundant noise diodes which are individually coupled into the antenna signal to provide an estimate of the gain.
Appears in Collections:JPL TRS 1992+

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