next up previous contents index
Next: E. Connections and Snapshots Up: sws_hb Previous: C.15 From Revolution 590

D. List of Acronyms and Symbols

This appendix lists acronyms and symbols specific to SWS in Tables D.1 and D.2. For a more general list of acronyms we refer to the ISO Handbook Volume I.

Table D.1: List of acronyms
acronym Description
AA Auto Analysis - software used to process data, see Section 7.3
AAR Auto Analysis Result file - output of AA, defined in Section A.4.1
AIT Assembly and Integration Tests
AIV Assembly and Integration Verification
AOT Astronomical Observation Template - see Chapter 3
CAM ISO Camera - one of the four instruments on board ISO
CoCo Configuration Control
CSH Compact Status History file, defined in Section A.2.2
CUS Calibration Uplink System
DAAR/Derive-AAR The OLP stage that processes SPD data to the AAR level. See Section 7.3
DIDAC Dutch ISO Data Analysis Centre at SRON in the Netherlands
DSPD/Derive-SPD The OLP stage that processes ERD data to the SPD level. See Section 7.2
EMC Electro-Magnetic Compatibility
EOHA Executed Observation History per AOT (CHECK)
EOHI Executed Observation History per ICS
ERD Edited Raw Data - raw data from the satellite, defined in Section A.2.1
FITS Flexible Image Transport System
FM Flight Model (of SWS)
FPG Focal Plane Geometry
FS Fouks-Schubert transient model
FWHM Full Width at Half Maximum
FP Fabry-Pérot Spectrometer
FPU Focal Plane Unit
GEHK General House Keeping
IA/SIA Interactive Analysis - a software package to analyse SWS data
ICS Instrument Command Sequence
IDA ISO Data Archive - the legacy archive in VILSPA, Spain
IDPD ISO Data Product Document - see [34]
IDT Instrument Dedicated Team
ILT Instrument Level Test (SWS laboratory test)
IRPH Instrument Reference Pointing History
ISAP ISO Spectral Analysis Package
ISO Infrared Space Observatory - home of SWS, LWS, CAM and PHOT
ISOSDC ISO Spectrometer Data Centre at MPE, Garching (Germany)
ITK Instrument Time Key - see the ISO Handbook Volume I for a description
  of this key
JFET Junction Field Effect Transistor
LW Long Wavelength section of SWS
LWS ISO Long Wavelength Spectrometer - one of the four instruments on board ISO
LVDT A measure of the angle of the scan mirror for the gratings. It is given the term
  `LVDT' as this angle is measured by a Linear Voltage Differential Transducer
OLP Off-Line Processing - the pipeline, also known as SPG
OSIA Observers SWS Interactive Analysis - IA without the specific calibration parts
PA Product Assurance
PHT/PHOT ISO Photo-polarimeter - one of the four instruments on board ISO
QLA Quick Look Analysis - a quick assessment carried out on the data
PV Performance Verification - Early phase in the mission
RC Resistor-Capacitance circuit responsible for curvature in the integration ramps
RSRF Relative Spectral Response Function
RTA Real Time Assessment - a quick assessment carried out on the data
SED Spectral Energy Distribution
SIDT SWS Instrument Dedicated Team
SNR Signal-to-Noise Ratio
SOC Science Operations Centre (Villafranca)
SPD Standard Processed Data file - output of DSPD, defined in Section A.3.1
SPG Standard Product Generation - the pipeline, also known as OLP
SPOPS SWS Post-Operations
SSO Solar System Object.
SW Short Wavelength section of SWS
SWGH SWS Glitch History Data file - output of DSPD, defined in Section A.3.2
SWS ISO Short Wavelength Spectrometer - one of the four instruments on board ISO
TDATA Transparent Data
TDF Telemetry Distribution Format
TDT Target Dedicated Time
UTK Uniform Time Key - see ISO Handbook Volume I for a description of this key
ZLF Zero Level Function in FS model

Table D.2: List of symbols
symbol Description
$ \beta$ Instantaneous gain in FS transient model
  Angle between optical axis and aperture (degree)
$ C$ Cross talk matrix
  Covariance matrix
$ \chi^2$ Quadratic misfit between model and data
$ d$ Fabry-Pérot gap width
$ D$ Grating constants (lines/mm)
$ D_k$ Data samples, measured readouts from the ERD. (bits)
$ \delta$ Angle between optical axis and detector (degree)
$ \Delta$t Time interval (s)
$ F$ Flux density (Jy)
$ G$ Gain factor
$ G_{AD}$ Analogue to Digital conversion factor
$ G_c$ Flux conversion factor (Jy s/$ \mu $V)
$ G_f$ Flat-field gain
$ G_p$ Photometric gain factor
$ G_{pre}$ Pre-amplifier gain
$ G_r$ Gain factor due to RSRF
$ H(t)$ Unit step function at t=0
$ L_{AOT}$ Number of scan steps per band
$ L_{F}$ Number of scan steps per FWHM of spectral resolution
$ L_{s}$ Step size in scanner steps
$ \lambda$ Wavelength
$ \Lambda$ Decay time in the FS transient model
$ mas$ Milliarcseconds
$ n$ Fabry-Pérot order
$ n_i$ Number of integrations
$ n_{int}$ Number of samples taken from a single spectral resolution element
$ n_{scan}$ Number of scans
$ n_{step}$ Number of steps
$ N$ Grating or FP order
$ N_D$ Dark current noise
$ O$ Offset
$ p$ Glitch height
$ R$ Spectral Resolution
$ S$ Signal Strength ($ \mu $V/s)
$ S_d$ Signal in the dark current
$ \sigma$ Standard deviation
$ t$ time (sec)
$ t_r$ Detector reset interval (sec)
$ \tau$ AC time constant
$ V$ (Modeled) readouts
$ Z$ Zero level function in FS model


next up previous contents index
Next: E. Connections and Snapshots Up: sws_hb Previous: C.15 From Revolution 590
ISO Handbook Volume V (SWS), Version 2.0.1, SAI/2000-008/Dc