CSCbiasesand+meserieswithhardwareonlywigglecorrec+on

E.DinnatandD.LeVineAquariusCal/ValMee+ng

RSS,SantaRosa,CA2017-01-10

ColdSkybiasesinSCIV4.5.1

Historic V4.0(black)andV4.5.1(red)(Hybrid2016)

BiasTimeSeriesusinghardwareonlycalibra+on

•  GlobalbiasoveroceanandSky– UpdatetoV4.5.1(EVQL)(caveat:low+meresolu+oninoceanbiases,missingfinewiggles)

1H

2H

3H

1V

2V

3V

Wigglesamplitude•  Temporal drift is noisy and mixture of

oscillations and linear trends •  Model fluctuation as Acos(2π(x/365 + B) ) – C(x – x0) + D

with x = day number wiggle amplitude is defined by A

FromSkybiases

Hardwaretemperaturevaria+ons

Samplesofhardwaretemperaturefluctua+ons(1/2)

•  Reflector/feedstemperaturesfluctua+onsdonotmatchTabias

Samplesofhardwaretemperaturefluctua+ons(2/2)

Fluctua+onmatchingTabiasin:

CNDFrontEnd(e.g.noisediode)BackEnd(e.g.LNA)

BiasTimeSeriesandTemperature

•  GlobalbiasoveroceanandSkyandTCND

1H

T_CND

2H

T_CND

3H

T_CND

1V

T_CND

2V

T_CND

3V

T_CND

BiasTimeSeries

•  DoesTabiascyclesvarywithla+tude?Oceanbiasper40degla+tudebands

V-polBeam1

V-polBeam2

V-polBeam3

H-polBeam1

H-polBeam2

H-polBeam3