Rosetta Project Glossary

RO-EST-LI-5012
Issue 1
Rev. h
26 Nov 2003
Detlef Koschny

Table of contents

Introduction and scope
Applicable documents
List of acronyms and names
Detailed explanations

Introduction and scope

This document attempts to give a complete list of the acronyms and names used in the Rosetta project. Additional information is given whereever possible. The additional information is coupled to the acronym list via hyperlinks, so that this document is best viewed using an internet browser. In some places, additional links are provided to further expand on the topic or to refer to external web pages. This document is far from complete. If you feel that an important acronym is missing, email the author.

Applicable documents

n/a

List of acronoyms and names

AD: Applicable document
ALICE: Rosetta experiment: UV spectrometer
AMDT: tbd
AMST: tbd
AOCS: Attitude and Orbit Control System
APPR: Mission phase - Approach
AST1/2: Mission phase - Asteroid flyby
AST1A: Mission phase - Asteroid 1 approach
AST1P: Mission phase - Asteroid 1 post flyby
AST2A: Mission phase - Asteroid 2 approach
AST2P: Mission phase - Asteroid 2 post flyby
ATP: Approach transition point

BERENICE: Rosetta experiment - Isotopic measurements of cometary volatiles

CAM: Rosetta Navigation Camera
CAP: Comet acquisition point
CAT: Mission phase - Close approach

CCS: Central Checkout System
CVS: Concurrent Versioning System
CDMU: Command and Data Management Unit
CDR: Spacecraft review - Critical Design Review
CLOSE: Mission scenario - Close encounter
CONSERT: Rosetta experiment: Comet Nucleus Sounding Experiment by Radio Transmission
COSIMA: Rosetta experiment: Cometary Secondary Ion Mass Analyzer
CR1..7: Mission phase: Cruise phase 1 to 7
CRID Command Request Interface Document
CVP: Mission phase - Commissioning phase

DDID: Data Delivery Interface Document
DDS: Data Distribution System (or Data Dissemination System)
DRIF: Mission phase - Comet drift

EAR1/2: Mission phase - Earth flyby
EDF: Experiment Description File

EGSE: Electrical Ground Support Equipment


EID: Experiment Interface Document
EID: Event Identifier
EMC: Electromagnetic Compatibility
EOID Experiment Operations Interface Document
EPS Experiment Planning System
EQM: Engineering and Qualification Model
ESA: European Space Agency
ESOC: European Space Operations Centre
ESS: Electrical Subsystem (of the Lander)
ESTEC: European Space Technology Centre
EXT: Mission phase: Extended mission

FAR: Spacecraft review - Flight Acceptance Review
FAT: Mission phase - Far approach
FCT: Flight Control Team
FCP: Flight Control Procedure
FDS: Flight Dynamics System
FDT: Flight Dynamics Team
FM: Flight Model
FTS: File Transfer System
FOP: Flight Operations Plan

GIADA: Rosetta experiment - Grain Impact Analyzer and Dust Accumulator
GSPAP: Ground Segment Product Assurance Plan
GMP: Global mapping insertion point

HDR: Spacecraft review - Hardware Design Review
HGA: High Gain Antenna
HIGH: Mission phase: Comet activity - high activity

ICA: Ion Composition Analyzer (part of RPC)
ICD: Interface Control Document
IDS: Interdiciplinary Scientist
IEEE-1355: Electrical interface with high speed
IES: Ion Electron Sensor (part of RPC)
INERT: Pointing mode - Inertially fixed pointing
INSCI: Mission scenario - Initial science
INSLW: Pointing mode - Slewing between two inertial positions

ITL: Input timeline.
JPL: Jet Propulsion Laboratory

LAN: Local Area Network
LAP: Langmuir Probe (part of RPC)
LCC: Lander Control Centre
LEOP: Mission phase - Launch phase
LID: Lander Interface Document
LIMB: Pointing mode: Limb pointing
LIMBOF: Pointing mode: Limb pointing with offset
LofA: List of Acronyms
LOP: Lander Operations Plan (formerly also called LFOP)
LOW: Mission phase: Comet low activity phase

MAG: Fluxgate Magnetometer (part of RPC)
MARS: Mission phase: Mars flyby
MEX: Mars Express
MIDAS: Rosetta experiment: Micro-Imaging Dust Analysis System
MINC: Mission phase: Comet activity: moderate increase
MIP: Mutual Impedance Probe (part of RPC)
MIP: Mission Implementation Plan
MIRO Rosetta experiment: Microwave Instrument for the Rosetta Orbiter
MPAe Max-Planck Institut für Aeronomie
MPE: Max-Planck Institut fur Extraterrestrik
MSS: Mechanical subsystem (of the Lander)
MTL: Mission Timeline

NADIR Pointing mode: Nadir pointing
NADOF Pointing mode: Pointing with a given offset to the nadir
NavCam Rosetta Navigation Camera, official abbreviation CAM
NMCO: Mission phase - Nucleus mapping/close encounter

OBCP On-Board Control Procedure
OIOR Orbiter Instrument Operational Request
OIP Orbit insertion point
ORF-A Operational Request File Acknowledger
OSIRIS Rosetta experiment: Science camera

PCU: Power Conversion Unit
PDS: Planetary Data System
PERI: Mission phase: Near perihelion
PI: Principal Investigator
PODT: Payload Operations Dynamical Timeline (obsolete)
POR: Payload Operations Request
PSA: Planetary Science data Archive

QTR: tbd - see spacecraft reviews

RGS: Rosetta Ground Segment (RSOC + RMOC)
RLGS: Rosetta Lander Ground Segment
RPI: Reference Pointing Information
RD: Reference document
RDVM: Rendezvous maneuver
RLGS: Rosetta Lander Ground Segment
RMIB: Rosetta Mission Implementation Base
RMOC: Rosetta Mission Control Centre
ROSINA: Rosetta experiment - Rosetta Orbiter Spectrometer for Ion and Neutral Analysis
RPC: Rosetta experiment - Rosetta Plasma Consortium
RRIM: RMOC - RSOC Interface Meeting
RSDB: Rosetta System Data Base
RSOC: Rosetta Science Operations Centre

SDR: Software Design Review - see spacecraft reviews
SINC: Mission phase: Comet activity: sharp increase
SIS: Spacecraft Interface Simulator
SIS: Software Interface Specification
STM: Structural Thermal Model
SOIA: Science Operations Interface Agreement
SONC: Science Operations and Navigation Centre
SOT: Science Operations Team
SPL: Scenario  Parameter Lists
SSP: Surface Science Package (also referred to as "Lander" or "Rosetta Lander")
SSMM Solid State Mass Memory
SRR Spacecraft review - see spacecraft reviews
START Start of mission

SVT System Verification Test
TC: Telecommand
TCB: Telecommand Buffer
TGM Mission phase: Transition to global mapping
TN: Technical Note


TRACK Pointing mode: Tracking an object on comet

UofM University of Maryland

VIRTIS Rosetta experiment: Infrared spectrometer

Detailed explanations

A


AD: Applicable document. If a document is signed, the applicable documents are automatically recognised with its contents too. One refers to an applicable document by 'ADnn' where nn is a consecutive number.
ALICE: Rosetta experiment - UV spectrometer. An US-led experiment, PI is Alan Stern from SwRI. For more information, see ESA's ALICE page with links to the institutes pages.
AMDT: used in the Lander.
AMST: used in the Lander.
AOCS: Attitude and Orbit Control System. Control system on board Rosetta to change the attitude and to measure it.
APPR Mission phase: Approach - See also Mission Phase Definition.
AST1/2 Mission phase: Asteroid flyby. The time around the asteroid flybys. The detailed asteroids are currently (Oct 2003) still tbd. See also Mission Phase Definition.
AST1A Mission phase: Asteroid 1 approach. The baseline asteroid 1 will be tbd. The asteroid flyby phases are divided into "A" = approach and "P" = post-flyby to better estimate the time available for data downlink. It is assumed that most of the data will be collected at the flyby itself, so for downlink the length of the "P" phase is available only. See also Mission Phase Definition.
AST1P Mission phase: Asteroid 1 post flyby. The baseline asteroid 1 will be tbd. The asteroid flyby phases are divided into "A" = approach and "P" = post-flyby to better estimate the time available for data downlink. It is assumed that most of the data will be collected at the flyby itself, so for downlink the length of the "P" phase is available only. See also Mission Phase Definition.
AST2A Mission phase: Asteroid 2 approach. The baseline asteroid 2 will be tbd. The asteroid flyby phases are divided into "A" = approach and "P" = post-flyby to better estimate the time available for data downlink. It is assumed that most of the data will be collected at the flyby itself, so for downlink the length of the "P" phase is available only. See also Mission Phase Definition.
AST2P Mission phase: Asteroid 2 post flyby. The baseline asteroid 2 will be tbd. The asteroid flyby phases are divided into "A" = approach and "P" = post-flyby to better estimate the time available for data downlink. It is assumed that most of the data will be collected at the flyby itself, so for downlink the length of the "P" phase is available only. See also Mission Phase Definition.
ATP Approach transition point -  See also Mission Phase Definition.

B

BERENICE: Former Rosetta experiment - Isotopic measurements of cometary volatiles. This experiment was initially proposed by PI Colin Pillinger, however, the participation was retracted from the spacecraft beginning of 2000.

C

CAM: Rosetta Navigation Camera - There are two identical, redundant CAMs on board Rosetta. Their boresight is oriented along the +z axis, parallel to the boresights of the science cameras OSIRIS. They use 1k x 1k front-illuminated EEV CCDs and a 140 mm objective lens. A mechanism in front of the lens allows to set three "filter" positions: (1) focussed and unattenuated (serves also as dust cover); (2) defocussed and unattenuated, and (3) focussed and attenuated. Their main use will be: (1) as dust protection and for maximum detectability; (2) for navigation purposes - defocussed stars are easier to centroid and give higher positional accuracy; (3) for observations of the comet nucleus with landmarks. The CAM was built by Officine Galileo.
CAP: Comet acquisition point - point when the CAM first detects the comet. See also Mission Phase Definition.
CAT: Mission phase: Close approach. See also Mission Phase Definition.
CCS: Central Checkout System. Used by Alenia on the test floor to check out the s/c. Provides an interface between the s/c and the experimenter EGSEs.
CLOSE: Mission scenario: Close encounter. Will be used to get high-resolution observations of the comet, e.g. when finding a potential landing site for the SSP.
CONSERT: Rosetta experiment: Comet Nucleus Sounding Experiment by Radio Transmission. PI is W. Kofman.
COSIMA: Rosetta experiment: Cometary Secondary Ion Mass Analyzer. German-led experiment, PI is Jochen Kissel from MPE, Garching.
CR1..7: Mission phase - Cruise phase 1 to 7. See also Mission Phase Definition.
CRID: Command Request Interface Document. Written by the RMOC, defines the formats for the input data for spacecraft commanding, e.g. the POR format, FDR files, etc.
CDMU: Command and Data Management Unit
CVP: Mission phase - Commissioning phase. See also Mission Phase Definition.
CVS: Concurrent Versioning System. A software tool (freeware) for configuration control. It is available from http://www.cvshome.org. At RSSD, a CVS server has been set up on the Planetary Science Operations computer system; it can accessed using any CVS client from inside RSSD.

D


DDID: Data Delivery Interface Document. Written by the RMOC, defines the formats of the delivered data.
DDS: Data Distribution System. Computer system operated by the RMOC. Used to distribute the spacecraft data, but also all other information like auxiliary data, etc. It will also be used during the mission as a repository for the operational request files and other planning documents.
DRIF: Mission phase - Comet drift. See also Mission Phase Definition.

E

EAR1/2: Mission phase - Earth flyby. During its path to the comet, Rosetta will fly close by the Earth two times. See also Mission Phase Definition.
EGSE: Electrical Ground Support Equipment. Typically one or more PCs that are used to operate the experiment.
EDF: Experiment Description File. Part of the RSOC planning software, used to model the experiment. Contains a list of all possible experiment TCs and TC sequences.
EID: Experiment Interface Document. There are three major EIDs: The EID-A describes the interface requirements from the ESA Project to the PI+Lander teams. The EID-B is the answer by the PI+Lander teams (actually, for the lander it is called "LID-B"), describing the interface requirements from the experiment to the s/c. The EID-C is an appendix to the EID-A giving tables and formsheets that need to be filled out by the PI+Lander teams.
EID: Event Identifier. An identifier used in events transmitted from experiments to the s/c and to ground.
EMC: Electromagnetic Compatibility. Standard test in space engineering. If one experiment influences another one due to electromagnetic interference, it did not pass the EMC test.
EOID: Experiment Operations Interface Document. Obsolete.
EPS: Experiment Planning System. Software tool of the RSOC to consolidate the experimenter Operational Request files.
EQM: Engineering and Qualification Model. The model of the s/c and/or the experiment which is representative of the electrical properties and can be used for qualification purposes.
ESA: European Space Agency - The European Space Agency coordinates the European space program. Rosetta is one of the cornerstone missions of ESA. The ESA web site can be found at http://www.esa.int.
ESOC: European Space Operations Centre. The ESOC web page can be found at http://www.esoc.esa.de.
ESS: Electrical Subsystem. Part of the Lander, but stays on the Orbiter. The ESS is the electrical interface between Orbiter and Lander.
ESTEC: European Space Technology Centre. The ESTEC web page can be found at http://www.estec.esa.nl.
EXT: Mission phase - Extended mission - See also Mission Phase Definition.

F


FAT: Mission phase - Far approach - See also Mission Phase Definition.
FCT: Flight Control Team. The group at the RMOC which is responsible for spacecraft control.

FCP: Flight Control Procudure. A piece of paper listing a number of telecommands and telemetry checks to perform a certain operation on board the spacecraft. The FCP is executed manually. All FCPs are collected in the Flight Operations Plan (FOP). From FCPs, Telecommand Sequences can be generated (by leaving away the TM checks)
FDR: Flight Dynamic Reqest files. These are the files sent from the Flight Dynamics Team (FDT) to the Flight Control Team to request attitude manoevres, trajectory manoevres, etc.
FDS: Flight Dynamics System. The software tools used by the Flight Dynamics Team (FDT).
FDT: Flight Dynamics Team. The group at the RMOC which is responsible for Flight Dynamics.
FM: Flight Model. The model of an experiment which is tested to "flight levels" and can be flown on the mission.
FTS: File Transfer System. The RSOC FTS is the computer located at ESOC, which receives the input files from the Experimenter teams.
FOP: Flight Operations Plan. A document produced by ESOC giving an overview over the planning of the complete mission. It also contains all Flight Control Procedures (FCPs) which are in the database (the RMIB).

G

GIADA: Rosetta experiment - Grain Impact Analyzer and Dust Accumulator. Italian-led experiment, PI is Luigi Colangeli.
GSPAP: Ground Segment Product Assurance Plan, RO-ESC-PL-5105. Document written by ESOC to define how ESOC procedures are to be applied to meet the quality requirements for the Rosetta project.
GMP: Global mapping insertion point - See also Mission Phase Definition.

H

HDR: Spacecraft review - Hardware Design Review
HGA: High Gain Antenna. The large dish antenna on Rosetta.
HIGH: Mission phase - Comet activity - high activity - See also Mission Phase Definition.

I

ICA: Ion Composition Analyzer (part of RPC)
ICD: Interface Control Document. An ICD describes the interface between two parties and shall be signed by both parties.

IDS: Interdiciplinary Scientist. IDSs are part of the Science Working Team. They do not provide an instrument, but partipicate in the mission as inter-experiment experts.
IEEE-1355: Electrical interface with high speed. On Rosetta, OSIRIS and VIRTIS are linked to the SSMM via a high-speed link.
IES: Ion Electron Sensor (part of RPC)
INERT: Pointing mode - Inertially fixed pointing
INSCI: Mission scenario, Initial science -  See also Mission Phase Definition.
INSLW: Pointing mode - Slewing between two inertial positions.
ITL: Input Timeline. This is one of the input file used by the Experiment Planning System (EPS). In the ITL file, the operational requests of the experimenter teams are written down. The basic syntax is as follows: time of a request or event with delta time, name of the experiment, mode of the experiment, mnemonic of the telecommand, parameters.

J


JPL: Jet Propulsion Laboratory. Institute of the PI of MIRO. The JPL web site is at http://www.jpl.nasa.gov.

L


LAN: Local Area Network. Used e.g. at ESOC in Darmstadt. They distinguish between the "Ops-LAN", the most secure network used for operations of the spacecraft, and the Relay-LAN, where e.g. the RSOC FTS is located.
LAP: Langmuir Probe (part of RPC)
LCC: Lander Control Centre. Part of the Rosetta Lander Ground Segment. Responsible for the operations of the Lander excluding science operations.
LEOP: Mission phase - Launch phase. See also Mission Phase Definition.
LID: Lander Interface Document. The interface document between the Lander and the Rosetta spacecraft.
LIMB: Pointing mode - Limb pointing
LIMBOF: Pointing mode - Limb pointing with offset
LOP: Lander Operations Plan (formerly called LFOP) - describes the Lander operations (both experiments and subsystems) in a human-readable form. Will be delivered to RSOC for planning purposes, in ITL syntax.
LOBT: Lander on-board time.
LOW: Mission phase - Comet low activity phase. See also Mission Phase Definition.

M


MAG: Fluxgate Magnetometer (part of RPC)
MARS: Mission phase - Mars flyby. See also Mission Phase Definition.
MEX: Mars Express. ESA mission to planet Mars, to be launched in 2003. There is a lot of similarity between Rosetta and MEX.
MIDAS: Rosetta experiment: Micro-Imaging Dust Analysis System.
MINC: Mission phase - Comet activity: moderate increase. See also Mission Phase Definition.
MIP: Mutual Impedance Probe (part of RPC)
MIP: Mission Implementation Plan. Document written by ESOC, describing the overall mission implementation.
Mission Phase Definition: A table listing start and end day of the mission, date, and events for each mission phase in pdf version here.
MIRO: Rosetta experiment - Microwave Instrument for the Rosetta Orbiter. An US-led experiment, PI is Sam Gulkis, JPL.
MPAe: Max-Planck Institut für Aeronomie in Katlenburg-Lindau, Germany. Location of the PI of OSIRIS.
MPE: Max-Planck Institut fur Extraterrestrik in Garching, Germany. Location of the PI of COSIMA.
MSS: Mechanical Subsystem. This is the mechanical interface between the Orbiter and the Lander. Consists of a spindle-driven ejection mechanism and a spring-loaded emergency eject system. Commanded by the ESS.
MTL: Mission Timeline. A memory area on board the spacecraft containing a time-tagged list of telecommands. They are sent to the payload at the given time.

N

NADIR: Pointing mode - Nadir pointing. Pointing to the mass centre of the object.
NADOF: Pointing mode - Pointing with a given offset to the nadir. The offset can be given in different ways, e.g. in decimal degrees in latitude and longitude of cometocentric coordinates.
NMCO: Mission phase - Nucleus mapping/close encounter. See also Mission Phase Definition.

O

OBCP: On-Board Control Procedure. A small software routine running in the spacecraft computer. It can interpret housekeeping values and send commands to instruments and the spacecraft.

OIOR: Orbiter Instrument Operational Request. Files of this type are sent from the PIs to RSOC to request certain operations of their instruments.
OIP: Orbit insertion point. The point when Rosetta is inserted into the mapping orbit. See also Mission Phase Definition.
ORF-A: Operational Request File Acknowledger. One of the RSOC's software tools. When a PI submits an operational request to the RSOC ftp server, ORF-A picks up the file and checks the name and, for some file types, also the contents e.g. by launching the EPS software. It will send an acknowledgement of the receipt of the file back to the sender.
OSIRIS: Rosetta experiment - Science camera. Initially, OSIRIS stands for "Optical, Spectroscopic, and InfraRed Imaging System". Note, however, that the spectroscopic and IR capabilities were descoped after the first proposal. PI is Horst Uwe Keller from MPAe in Katlenburg-Lindau, Germany. OSIRIS actually consists of two cameras: one wide-angle camera (WAC), a 140 mm focal length f/8 unobstructed two-mirror system, and the narrow-angle camera (NAC) with 700 mm focal length f/5.6. The NAC is led by Lead Scientist Philippe Lamy (France), the WAC by Cesare Barbieri (Italy). Both cameras use identical focal planes with 2k x 2k back-illuminated EEV CCDs. For more information see ESA's OSIRIS page with links to the institutes pages.

P

PCU: Power Conversion Unit
PDS: Planetary Data System. A standard developed initially by NASA/JPL for the formatting of data products from planetary missions. The European Planetary Science Data Archive follows the PDS rules as far as possible.
PERI: Mission phase - Near perihelion. See also Mission Phase Definition.
PDS: Planetary Data System. A concept to archive data. While the PDS system was defined by NASA, it will be used for Rosetta to install an ESA archive. Their web site can be found at http://pds.jpl.nasa.gov.
PI: Principal Investigator - The PI is the formal single responsible interface for a scientific experiment on board Rosetta. He/she typically works at a scientific institute in one of the European member countries or in the USA and is paid by national funding.
PODT: Payload Operations Dynamical Timeline - obsolete term. Replaced by Input Timeline (ITL).
Pointing mode definition: In the science operations planning, different pointing modes are defined. The formal definition can be found in the document "PTR Software Specification Document, SOP-SSD-SP-002". The following modes are defined:
more to come.
POR: Payload Operations Request. The electronic file to request payload operations sent from the RMOC to the RSOC.
PSA: Planetary Scienc Data Archive. The PSA will combine the long-term science archive of all ESA planetary missions. It features a web-based interface to the data base with search functions. The underlying data format follows the definitions of the PDS.

R

RPI: Reference Pointing Information. This is pointing information that is created for planning purposes by the RSOC. In real operations, it is replaced by the quaternion files produced by the Flight Dynamics Team (FDT) at ESOC.
RD: Reference document. One refers to a reference document via 'RDnn', where nn is a consecutive number.
RDVM: Rendezvous maneuver.
RGS: Rosetta Ground Segment. A term used mainly by the Lander team to distinguish the Rosetta Ground Segment (i.e. RMOC and RSOC) from the Lander Ground Segment (RLGS).
RLGS: Rosetta Lander Ground Segment. It is composed of the Lander Control Centre (LCC) at DLR in Cologne and the Science Operations and Navigation Centre (SONC) at CNES in Toulouse.

RMIB: Rosetta Mission Implementation Base. A database containing all telecommands and their parameters, telecommand sequences and their parameters, calibration curves, telemetry definitions. The RMIB is maintained by the RMOC. Part of the RMIB is the RSDB.
RMOC: Rosetta Mission Operations Centre. It is responsible for controlling the spacecraft. It accepts the science operations requests in the form of a POR file and consolidates them with the spacecraft operations. It is physically located at ESOC on Darmstadt, Germany.
ROSINA: Rosetta experiment - Rosetta Orbiter Spectrometer for Ion and Neutral Analysis. Swiss-led experiment, PI is Hans Balsiger.
RPC: Rosetta experiment - Rosetta Plasma Consortium. Consists of several experiments with individual PIs. The consortium is represented by a spokesman who is nominated on a yearly basis.
RRIM: RMOC - RSOC Interface Meeting. These meetings are being held approximately every 3 months between the members of the RSOC and the RMOC to clarify or discuss interface issues.

RSDB: Rosetta System Data Base. A subset of the RMIB, containing everything except the telecommand sequences. The RSDB was created and maintained by the prime contractor Astrium.
RSOC: Rosetta Science Operations Centre. The main task of the RSOC is to consolidate the experiment operations requests from the different experiments and the Lander. To achieve this, it uses software tools like the EPS and the PTB. The web site of the RSOC can be found at http://www.rssd.esa.int/Rosetta/.

S

SDR: Software Design Review - see spacecraft reviews
SINC: Mission phase - Comet activity: sharp increase
SIS: Spacecraft Interface Simulator. A 19" rack with some electronics to simulate the spacecraft interface. Sold to the experimenter teams.
SIS: Software Interface Specification. A document required for data archiving by the PDS.
STM: Structural Thermal Model. The model ofthe s/c and/or the experiment which is representative concerning structural and thermal behavior.
SOIA: Science Operations Interface Agreement, RO-ESC-IF-5005. The interface document on management level between the RMOC and the RSOC.
SONC: Science Operations and Navigation Centre. Part of the Rosetta Lander Ground Segment. It is responsible for the preparation of the scientific operations of the Lander experiments and will support ESOC in the task of navigating the Lander to the comet.
SOT: Science Operations Team. The staff forming the RSOC.
SPL: Scenario Parameter Lists. Used in the science operations planning. These are the top-level descriptions of the requirements to a mission scenario to the ESOC Flight Dynamics Team.
SSP: Surface Science Package. Also called Rosetta Lander. It is composed of 6 subsystems and 9 experiments.
SSMM: Solid State Mass Memory. The central memory of Rosetta. Delivered by Saab in Sweden.
Spacecraft reviews: The following reviews are performed on spacecraft level:
For the ground segment, the following reviews apply:
SSMM: Solid State Mass Memory. The mass memory on board Rosetta. Built by Saab Aerospace, several Gbyte memory capacity. 
SSP: Surface Science Package (also referred to as "Lander" or "Rosetta Lander")
START: Start of mission
SVT: System Verification Test

T

TC: Telecommand. Telecommands are the commands sent from the Mission Timeline (MTL) to the payload. During in-flight operations, they are not called directly, but only via Flight Control Procedures (FCPs) or Telecommand Sequences.
TCB: Telecommand Buffer. Used on the Lander to store telecommands for the individual Lander units.
TGM: Mission phase - Transition to global mapping
TN: Technical Note. Used as a document identifier.
TRACK: Pointing mode - Tracking an object on comet. See also pointing mode definition.

U

UofM: University of Maryland

V

VIRTIS Rosetta experiment: Infrared spectrometer. Italian-led experiment, PI is Angioletta Coradini. It will allow to map the mineralogy of the comet by looking at the visual and infrared signatures. Built by Officino Galileo.