Advanced Sensor Data Management – High Speed at High Security Level requiring Low Resources

Paper number

IAC-07-B2.3.03

Author

Mr. Boris Penné, OHB-System AG, Germany

Coauthor

Mr. Carsten Tobehn, OHB-System AG, Germany

Coauthor

Dr. Rainer Rathje, Germany

Coauthor

Dr. Harald Michalik, Germany

Year

2007

Abstract

Future Earth observation missions with increasing spatial and spectral resolutions (0,5m to 5m using 8 to 200 channels) set increasing requirements for on-board payload data management in terms of high data rates and large data volumes. The downlink capacity on the other hand is a limiting factor which can only be overcome by recently new technologies within the transmitter technology on one side and the data pre-processing on-board on the other side. A further domain aspect by transmitting Earth observation data to earth is the security of the data (e.g. commercial or GMES missions).
This paper presents advanced and innovative architecture for spaceborne high speed payload data management subsystem designed in a modular approach in order to scope with different requirements in terms of data volumes/rates and redundancy approaches under different security levels.
The entire data management chain beginning from the output of the imaging sensor until the downlink will be presented. The chain introduces the advantages of the IEEE 1355 space wire standard to provide scaleable redundancy and performance. The modules of the chain like on-board data processing (LEON processor) feature data compression, data evaluation and truncation of data to the area of interest as well as data storage, data formatting (CCSDS), data encryption and downlink. The performance of the chain reaches more than 10Gbit/s input rate and an output rate of 740Mbit/s using dual polaristation techniques at X-Band at considerable low resources of about 50W and 40kg in a redundant configuration.

Abstract document

IAC-07-B2.3.03.pdf

Manuscript document

IAC-07-B2.3.03.pdf (🔒 authorized access only).

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