PDS_VERSION_ID = PDS3 LABEL_REVISION_NOTE = "2015-12-15 IR: 5.0" RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2015-12-15 NOTE = " This file describes the content of the CALIB directory " END_OBJECT = TEXT END ***** File CALINFO.TXT ****** Contents of the CALIB Directory RPCMAG_SC_ALIGN.ASC RPCMAG_SC_ALIGN.LBL RPCMAG_GND_CALIB_FSDPU_FMIB.ASC RPCMAG_GND_CALIB_FSDPU_FMIB.LBL RPCMAG_GND_CALIB_FSDPU_FMOB.ASC RPCMAG_GND_CALIB_FSDPU_FMOB.LBL RPCMAG_phase_008_CALIB_IB.ASC RPCMAG_phase_008_CALIB_IB.LBL RPCMAG_yyyy_mm_phase_008_CALIB_OB.ASC RPCMAG_yyyy_mm_phase_008_CALIB_OB.LBL REMARK : Due to filename restriction constraints the CALIB files had to be renamed to RPCMAG_phase_008_CALIB_IB.ASC RPCMAG_phase_008_CALIB_IB.LBL RPCMAG_phase_008_CALIB_OB.ASC RPCMAG_phase_008_CALIB_OB.LBL RPCMAG_BOOM_ALIGN_CORR_EF1.ASC RPCMAG_BOOM_ALIGN_CORR_EF1.LBL The CALIB directory contains all necessary information to generate calibrated magnetic field values from the Inboard (IB) and the Outboard (OB) sensor. The following file are needed 1) RPCMAG_SC_ALIGN.ASC 2) RPCMAG_BOOM_ALIGN_CORR_EF1.ASC 3) RPCMAG_GND_CALIB_FSDPU_FMIB.ASC 4) RPCMAG_GND_CALIB_FSDPU_FMOB.ASC 5) RPCMAG_yyyy_mm_phase_008_CALIB_IB.ASC 6) RPCMAG_yyyy_mm_phase_008_CALIB_OB.ASC The first file contains the rotation matrices to turn the magnetic field vector from instrument coordinates to s/c-coordinates. There are two matrices for each sensor: one for the stowed boom and one for the deployed boom position. The second file is used to correct the sensor orientation using the analysis result from the first Earth Flyby. By comparison with the POMME Earth magnetic field model it turned out, that the sensors have to be rotated by some hundredths of a degree to get the best accordance with the model. The two GND files contain all information to calculate the temperature dependent sensitivity, misalignment and offset of the IB and OB sensors (FM units) connected to the Flight-spare (FS) DPU. This correction is based on Ground Calibration Results. For an improvement of the calibration the two Inflight Calibration File for Temperature Model 008 are used. These two files (calculated on daily bases) contain the actual Temperature correction polynomial for the sensor offsets. The temperature calibration model is still under development in order to adapt all effects seen during the quasy continous operations at CG. Temperature files are provided for every day, altough they can contain the same coefficients. Temperature effects will be recalibrated after end of mission when also more spacecraft disturbances will be identified and a common calibration model can be set up. All files are read by the IDL s/w gen_cal_data.pro The GND calibration algorithm is described in the Calibration Analysis report RO-IGM-TR-0003 (Chapters 7 -9), which can be found in the document directory. The Inflight calibration is described in the EAICD. The complete calibration is described in the document RO-IGEP-TR0028 : Step by Step calibration procedure