GSC Sentinel-2 PDGS SRD - emits - ESA

GSC Sentinel-2 PDGS SRD
Issue 1 Revision 2 (draft) - 25.07.2010
GMES-GSEG-EOPG-RD-09-0028
page 74 of 204
S2-PDGS-DRX-200
The PDGS/DRX function shall be able to reconstruct a single ordered stream of science
data from simultaneous received VCDU data (with same VCID) from the two X-band
physical channels (half swath on each physical channel) sorting the received transfer
frames by the virtual channel frame count.
S2-PDGS-DRX-205
The PDGS/DRX function shall be able to monitor and report on the quality of the downlink
channels through the measurement of communication link parameters including at least
the following:
Antenna AOS/LOS events
Frame Loss Rate
Channel BER
Signal Spectrum
SNR
Eb/No
etc.
S2-PDGS-DRX-210
The PDGS/DRX function shall be able to monitor and report on the acquired data
processing activities performed:
FEP AOS/LOS
R/S corrected symbols
R/S uncorrected symbols
etc.
S2-PDGS-DRX-215
The PDGS/DRX function shall autonomously connect to the DPC function for the supply of
the current-pass ISPs. As such, the DPC function shall be able to start its processing-onflow
activities and ensure required timeliness requirements are satisfied.
S2-PDGS-DRX-220
The PDGS/DRX function shall provide to the MPA function (via the MCC function as
proxy) the cyclic reports (e.g. daily reports) on the acquired data processing and
transformations performed.
S2-PDGS-DRX-225
The PDGS/DRX function shall be able to receive data from the two independent X-band
links according to the following downlink centre carrier frequencies and maximum
occupied bandwidths (145 MHz):
8.090 MHz (Link 1) +/- 72.5 MHz
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