Difference between revisions of "Survey history"

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===Pre-Programmed Pointing Lists===
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{{DISPLAYTITLE:Survey history data}}
  
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The Pre-Programmed Pointing Lists (PPL) are made by Planck Science Office from the Baseline Scanning Strategy with the help of the Software Planning and Performance Tool.
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==Pre-Programmed Pointing Lists==
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They are sent to MOC/FD for use in making the Augmented Pre-Programmed Pointing Lists (APPL) used for commanding the spacecraft attitude.
 
  
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The PPL file name is the following:
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The Pre-Programmed Pointing Lists (PPL) are produced by the Planck Science Office from the Baseline Scanning Strategy with the help of the Software Planning and Performance Tool.
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YYYYMMDD_yyyymmdd_NNNN_X.PPL
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They are sent to MOC where they are used in the production of the Augmented Pre-Programmed Pointing Lists (APPL) used for commanding the spacecraft attitude.
  
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with YYYYMMDD = start date of the valid span of the PPL file
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PPLs can be found in the Planck Legacy Archive in the "Time-Ordered Information: Operational Files" section. A full list of the available files can be found {{PLAOp|type=PPL|link=here}}.
  
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yyyymmdd = end date of the valid span of the PPL file
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Detailed information about the PPL's (naming conventions, content, etc) can be found here:
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[http://www.rssd.esa.int/llink/livelink/fetch/-60063/65211/65216/200039/2785625/PGS-ICD-017_Pre-programmed_Pointing_List_%5BPPL%5D.pdf?nodeid=2785628&vernum=-2 PPL ICD]
  
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NNNN = unique sequence number, in the range 0000 ≤ NNNN ≤ 9999, incrementing
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==Augmented Pre-Programmed Pointing Lists==
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sequentially throughout the mission and uniquely identifying each new PPL file that is
 
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generated (i.e. no repeated numbers and no gaps in the sequence of PPLs)
 
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o 0000-8999 reserved for PSO
 
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o 9000-9999 reserved for attitude manoeuvres generated by MOC
 
  
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X = type of PPL, as follows:
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APPLs are produced by Flight Dynamics at ESOC using pointing information (PPLs) from the Planck Science Office.
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o R = Routine (standard 4-week PPL)
 
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o C = Contingency (3-day replanning)
 
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o L = Long-Term PPL (LTPPL)
 
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o S = Special
 
  
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PPLs contain the following information in ASCII columns:
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The APPLs incorporate information about the Operational Day boundaries in order to fit pointings into each OD.
  
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* pointing reference number
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APPLs are grouped and summarized by FD in the so-called APPL Summary File or APS.
  
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* Ecliptic longitude
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These are available in the Planck Legacy Archive in the "Time-Ordered Information: Operational Files" section. A full list of the available files can be found {{PLAOp|type=APS|link=here}}.
  
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* Ecliptic latitude
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Detailed information about the APPL's (naming convention, contents, etc) can be found here: [http://www.rssd.esa.int/llink/livelink/fetch/-60063/65211/65216/200039/2785625/PGS-ICD-050_Augmented_Pre-programmed_Pointing_List_%5BAPPL%5D.pdf?nodeid=2865927&vernum=-2 APPL Interface Control Document]
  
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* nominal start time for pointing
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==Attitude History Files==
  
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* earliest allowed start time
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The pointing history of Planck is described in the Attitude History Files (AHF) sequence.
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All the AHF can be found in the Planck Legacy Archive, for three different methods of computation ({{PLAOp|type=AHF|link=AHF}}, {{PLAOp|type=DHF|link=DHF}}, {{PLAOp|type=GHF|link=GHF}}).
  
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* latest allowed start time
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The GHF are made using refined pointing information from the [[The_satellite#The Fiber Optic Gyro unit|Fiber Optics Gyroscope]].
  
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* nominal dwell time
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Available information concerning the AHF can be found here:
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[http://www.rssd.esa.int/llink/livelink/fetch/-60063/65211/65216/200039/2785625/PGS-ICD-006_Attitude_History_File_%5BAHF%5D.pdf?nodeid=2808899&vernum=-2 AHF Interface Control Document]
  
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* observation type
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==Focal plane geometry==
  
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* comments
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The Spacecraft-Instrument Alignment Matrix (SIAM) contains all the geometry information for each detector of both instruments with respect to the main optical frame.
  
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PPLs can be found in the Planck Legacy Archive.
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The last updated SIAM is provided in the Planck Legacy Archive in the "Time-Ordered Information: Operational Files" section and can also be downloaded {{PLAOp|type=SIAM|link=here}}
  
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===Augmented Pre-Programmed Pointing Lists===
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Information about the structure of the SIAM can be found here:
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[http://www.rssd.esa.int/llink/livelink/fetch/-60063/65211/65216/200039/2785625/PGS-ICD-039_Spacecraft_Instrument_Alignment_Matrix_%5BSIAM%5D.pdf?nodeid=2831007&vernum=-2 SIAM ICD]
  
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APPLs are made by MOC / Flight Dynamics using pointing information (PPLs) from the Planck Science Office.
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==Orbit file==
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The APPLs incorporate information about the Operational Days boundaries in order to fit pointings into each OD.
 
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APPLs are grouped ans summarized by MOC to form files called the APPL Summary Files or APS. These are delivered in the Planck Legacy Archive in the "Time-Ordered Information: Operational Files" section, by Operational Day.
 
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===Attitude History Files===
 
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The pointing history of Planck is described in the Attitude History Files (AHF) sequence.
 
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All the AHF can be found in the Planck Legacy Archive, for three different methods of computation (AHF, DHF, GHF).
 
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The GHF are made using refined pointing information from the [[The fiber optic gyro unit|Fiber Optics Gyroscope]].
 
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The AHF contain the following information ordered in columns:
 
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===Rotation velocity of the spacecraft===
 
  
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The orbit file is produced by the Flight Dynamics team at ESOC and contains the information of the Planck orbital history throughout the whole mission (since launch).
  
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===Focal plane geometry===
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This product is available in the Planck Legacy Archive interface in the "Time-ordered information : Orbit file" section. Only one orbit file is delivered since it contains all the past information for the whole of the Planck mission.
  
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The Spacecraft-Instrument Alignment Matrix contains the information.....
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The orbit file can be downloaded {{PLAOp|type=ORB|link=here}}.
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===Orbit file===
 
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The orbit file is produced by the Flight Dynamics team at ESOC and contains the information of the Planck orbital history throughout the whole mission (since launch).
 
  
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Information about the structure, contents and format of the orbit file can be found in the [ ].
  
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===Planck operational state history===
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==Orbit events file==
  
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The Planck Operational State History (POSH) provides an easily accessible summary of the status of the Planck spacecraft, throughout the course of its mission. It should be useful to scientists as a complement to the data they are analyzing.
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The orbit events file .LEV is produced by the Flight Dynamics team at ESOC and contains the information of the Planck orbit events throughout the whole mission (since launch).
  
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Due to the type and quantity of data that describes the state of a satellite and its instruments, it is common for it to be spread over a large number of files and formats which may have to be retrieved from a large number of systems. In addition there are a significant number of potentially interesting occurrences during the mission which are not found in any one single repository; examples are mission milestones, definitions of operational days and anomalous events. The initial motivation for the creation of the POSH was to provide the state of the spacecraft and its instruments in an easily accessible way at any given time. States to be included were the operational phases and the operational status/mode of each of the major payload components. The intention being that this information could be used to assist not only in the operational work in monitoring the status of the survey but also as a data source that could be consulted whilst analyzing science data.
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This product is available in the Planck Legacy Archive interface in the "Time-ordered information : Orbit events file" section. Only one orbit events file is delivered since it contains all the past information for the whole of the Planck mission.
  
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Two main record types are stored in the POSH:
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The orbit events file can be downloaded {{PLAOp|type=LEV|link=here}}.
  
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EVENTS, consisting of occurrences during the mission that can be described by a start and end time (e.g. survey boundaries, anomalies, ODs, manoeuvres). The definition of an event is provided for operational purposes; it may or may not agree with the definition of an event for data analysis purposes (e.g. the boundaries of a survey may be defined in a different way in the pipeline).
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Information about the structure, contents and format of the orbit events file can be found in the [ ].
  
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HOUSE KEEPING (HK) SUMMARY which consists of some HK timelines with one data point per pointing period (e.g. temperatures, position in the sky, drift rates, sun angles). This data set contains a very compact operational summary of the mission (not an exhaustive list of HK).
 
  
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[[Category:Mission history]]
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[[Category:Operational data|003]]
 
[[Category:PSOBook]]
 
[[Category:PSOBook]]

Latest revision as of 15:55, 3 February 2015


Pre-Programmed Pointing Lists[edit]

The Pre-Programmed Pointing Lists (PPL) are produced by the Planck Science Office from the Baseline Scanning Strategy with the help of the Software Planning and Performance Tool. They are sent to MOC where they are used in the production of the Augmented Pre-Programmed Pointing Lists (APPL) used for commanding the spacecraft attitude.

PPLs can be found in the Planck Legacy Archive in the "Time-Ordered Information: Operational Files" section. A full list of the available files can be found here.

Detailed information about the PPL's (naming conventions, content, etc) can be found here: PPL ICD

Augmented Pre-Programmed Pointing Lists[edit]

APPLs are produced by Flight Dynamics at ESOC using pointing information (PPLs) from the Planck Science Office.

The APPLs incorporate information about the Operational Day boundaries in order to fit pointings into each OD.

APPLs are grouped and summarized by FD in the so-called APPL Summary File or APS.

These are available in the Planck Legacy Archive in the "Time-Ordered Information: Operational Files" section. A full list of the available files can be found here.

Detailed information about the APPL's (naming convention, contents, etc) can be found here: APPL Interface Control Document

Attitude History Files[edit]

The pointing history of Planck is described in the Attitude History Files (AHF) sequence. All the AHF can be found in the Planck Legacy Archive, for three different methods of computation ( AHF, DHF, GHF).

The GHF are made using refined pointing information from the Fiber Optics Gyroscope.

Available information concerning the AHF can be found here: AHF Interface Control Document

Focal plane geometry[edit]

The Spacecraft-Instrument Alignment Matrix (SIAM) contains all the geometry information for each detector of both instruments with respect to the main optical frame.

The last updated SIAM is provided in the Planck Legacy Archive in the "Time-Ordered Information: Operational Files" section and can also be downloaded here

Information about the structure of the SIAM can be found here: SIAM ICD

Orbit file[edit]

The orbit file is produced by the Flight Dynamics team at ESOC and contains the information of the Planck orbital history throughout the whole mission (since launch).

This product is available in the Planck Legacy Archive interface in the "Time-ordered information : Orbit file" section. Only one orbit file is delivered since it contains all the past information for the whole of the Planck mission.

The orbit file can be downloaded here.

Information about the structure, contents and format of the orbit file can be found in the [ ].

Orbit events file[edit]

The orbit events file .LEV is produced by the Flight Dynamics team at ESOC and contains the information of the Planck orbit events throughout the whole mission (since launch).

This product is available in the Planck Legacy Archive interface in the "Time-ordered information : Orbit events file" section. Only one orbit events file is delivered since it contains all the past information for the whole of the Planck mission.

The orbit events file can be downloaded here.

Information about the structure, contents and format of the orbit events file can be found in the [ ].

Pre-programmed Pointing List

[ESA's] Mission Operation Center [Darmstadt, Germany]

Augmented Preprogrammed Pointing List

European Space Operations Centre (Darmstadt)

Operation Day definition is geometric visibility driven as it runs from the start of a DTCP (satellite Acquisition Of Signal) to the start of the next DTCP. Given the different ground stations and spacecraft will takes which station for how long, the OD duration varies but it is basically once a day.

Attitude History File

Spacecraft Instrument Alignment Matrix

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