Planck LFI DPC SOVT2 Test-Results
Date Issued
2008
Author(s)
Abstract
Top Objective:
Validation of the overall ground and space segment behaviour from end-to-end in a CPV
Phase operational configuration.
Detailed Objectives:
1. Demonstration of E2E integration of subsystems and their system-level interfaces
Successful integration and validation activities, which were already performed for limited
system areas and confirmed in SOVT-1, shall be performed for the CPV Phase in a system
wide operational context.
2. Identification of timing constraints and data product processing issues
Estimated transfer and process times shall be confirmed that are specific to the CPV Phase.
Especially the impact of transfer times on the expected start of successive processes.
Identification of bottlenecks in system processes, where an underperformance in transfer or in
a sub-process causes delays.
3. Validation of Ground Segment stability for 24/5
The complete ground segment hardware, software and communication lines are used in an
operational context for 24 hours on 5 days. No forced contingencies are planned, but
unexpected outages shall be covered by redundancy. In this case the CPV Phase requirements
are more stringent than the routine phase.
4. Validation of Space Segment stability for 24/55 while operating PV phase activities
The S/C shall operate for 24 hours on 5 days based upon planned CPV Phase activities. The
MTLs shall be executed and the S/C behaviour shall be nominal.
5. Identification of unexpected problems coming up in an E2E operational environment
Complex systems conceal unexpected behaviour and this behaviour will differ between the
Routine (SOVT-1) and CPV Phase scenario. System wide tests reduce these risks.
Ancillary Objectives:
6. Validation of CPV Phase Operations Procedures
While most Flight Operations Procedures are validated in SVTs, Ground Operations
Procedures shall be validated during SOVTs as well. SOVT-2 is the opportunity to validate
CPV Phase procedures.
7. Operational Network under realistic load
The measured data transfer times shall confirm the choice of communication lines
bandwidths. These times are more stringent during the CPV Phase
Volume
PL-LFI-OAT-RP-018
Rights
open.access
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ESA-36.pdf
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Technical Note
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