PDS_VERSION_ID = PDS3
RECORD_TYPE = STREAM
OBJECT = TEXT
PUBLICATION_DATE = 2021-06-04
NOTE = "
CALINFO.TXT describes the contents of the CALIB directory."
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END
The CALIB directory contains the mappings and constants used to convert
data on the JNOWAV_0000 volume to final calibrated data on this
JNOWAVB1000 volume. The calibration process uses as it's inputs the
CODMAC level 2 products and these files. No other input files are
required to create the data product files on this volume.
Though they are not expected to change often, each file contains a
version number included in the file name and in the PRODUCT_VERSION_ID
element of it's associated label.
Each WAVES_BURST product file includes the version number of the
calibration files used to the product. The BURST product columns
containing calibration version numbers are:
CAL_VER_AMP
CAL_VER_ATTN
CAL_VER_FREQ
The Waves team may from time to time update one or more of the
calibration files. If such an occasion arises the relevant calibration
version numbers will be incremented and all affected output products
will be re-calculated and re-published, thus causing the product
versions to increment as well.
A brief summary of the files in this area are included below, more
extensive notes are included in each calibration file's product label.
[CALIB] This directory
|
|- CALINFO.TXT This file
|
|- WAV_CAL_ATTN_Vnn.CSV Provides a look up table between attenuation
| WAV_CAL_ATTN_Vnn.LBL indicator values in the level 2 packet stream
| measured Vrms scaling factors. The LFR
| magnetic channel has no hardware attenuation
| capability. All electric product files on the
| volume use this file.
|
|- WAV_CAL_BST_DIRECT_AMP_Vnn.CSV
|- WAV_CAL_BST_DIRECT_AMP_Vnn.LBL
| The calibration table used to produce
| the directly sampled BURST mode electric
| and magnetic field amplitude products
| volume. Waveforms sampled at 50kHz,
| 375kHz, and 7 MHz are calibrated at a
| mid-band frequency using coefficients
| from these files.
|
|- WAV_CAL_BST_NBS_AMP_Vnn.CSV
|- WAV_CAL_BST_NBS_AMP_Vnn.LBL
| The mid-band amplitude calibration
| coefficients for BURST mode 1MHz wide
| spectra products produced from down-mixed
| electric waveform samples.
|
|- WAV_CAL_BST_NBS_FREQ_Vnn.CSV
|- WAV_CAL_BST_NBS_FREQ_Vnn.LBL
Frequency response adjustments to the
amplitude calibrations for BURST mode
1MHz wide spectra products produced from
down-mixed electric waveform samples.
Normalizations included in these files
have not been applied to the data but the
table has been included for completeness
in the case that it may be useful.
|