Data Collection Platforms

The collection and distribution of environmental data from Data Collection Platforms (DCP) is one of the core services for many meteorological satellites around the globe. DCP stations transmit data from various meteorological and environmental sensors in the UHF band (Ultra High Frequency) via satellites. Depending on the Data Collection System, the DCP band is subdivided into several hundred DCP channels.

Recently, SCISYS finished the development of the new Data Collection Platform Facility (DCP-F) on behalf of EUMETSAT. DCP-F is the new multi-mission component for GEO missions supporting the acquisition, processing and dissemination of messages transmitted by the DCP platforms and relayed by GEO satellites in support of the CGMS DCS mission.

This involvement includes the design, development and test of a new MTG DCP receiver as well the digital simulation of up to 700 parallel MTG DCP messages  at radio frequency level. The design and definition of the target platform for the operational and validation systems of the DCP Facility and the integration, testing and verification including all existing DCP-F subsystems like the Processing element and the MTG DCP receivers is also part of our contribution.

Within an ESA project, SCISYS developed a reference DCP Transmitter supporting all DCP missions for GOES and METEOSAT SRDCP and HRDCP. The HRDCP transmitter has been certified by EUMETSAT as part of the project. The second major achievement of the project was the preliminary definition of a potential DCP New Air Interface, the Enhanced DCP. The definition of the interfaces are based upon market survey with satellite operators, DCP manufacturers and users. These interfaces have been verified by simulation and by testing with the developed DCP transmitter and the existing 2met DCP receiver.

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DCP-F

DCP-F is the new multi-mission component for the EUMETSAT GEO missions supporting the acquisition, processing and dissemination of messages transmitted by the DCP platforms and relayed by METEOSAT in support of the CGMS DCS mission.

HRDCP certified TX for ESA

Within an ESA ARTES 5.1 technology program project, SCISYS developed a reference DCP Transmitter supporting the legacy DCP missions of the GOES 300/1200 Baud, the international 100 Baud SRDCP as well as EUMETSAT’s 1200 Baud HRDCP specification.

The developed prototype is market competitive at all points, performance-, production costs- and manageability-wise. Furthermore, it is certified by EUMETSAT for Meteosat HRDCP operation. TRL6 is reached for HRDCP and TRL5 for all other missions including EDCP (Enhanced DCP). Design challenges like high frequency stability and low phase noise of the UHF carrier versus low power operation over a wide supply voltage and operating temperature range have been mastered. Only a few small modifications of the prototype design will be necessary to meet all the target specifications established at the beginning of the project.

The certification of the DCP-Tx for the EUMETSAT HRDCP mission has been achieved (Certificate No 2018-004-DCP-HDR).

ESA artes Project: HRDCP

EDCP proposal for future work/enhancements

The second major achievement of the ESA ARTES 5.1 technology program project was the preliminary definition of a potential DCP New Air Interface. EDCP stands for “Enhanced Data Collection Platform” and was so named as a proposed enhancement to the existing options supported by EUMETSAT and potentially by other DCP operators world-wide.

The goals for the “new air interface” were very broadly defined at the start and during the project we solicited responses from many people, companies, and organizations with an interest in the use and future of the DCP system. From this we analysed the desired performance goals and proposed two EDCP variations, targeting mainly movement tolerance and data integrity while maintaining transponder compatibility and still fitting into existing Meteosat and GOES channel slots.

Both EDCP alternatives, BPSK and Pi/2-BPSK were implemented in the transmitter prototype hardware and proven to work together with the extended 2met! DCP Acquisition software in laboratory tests.

In addition, simulations of the complete TX-RX chain in view to Gaussian noise, FM/AM effects and sweeping/fixed CW interference clearly showed the EDCP phase noise robustness advantages, especially compared to the older SRDCP and GOES standards.

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SCISYS SPACE Division provides integrated solutions and products for ground & on-board systems as well as on-site engineering and operations support for the management and procurement of space and space-related projects.

For us, a long-standing partnership based on trustworthy collaboration with our customers holds the key to sustained success in the exciting and sophisticated space market.Our customers are satellite operators, system integrators and major research laboratories, as well as organisations and companies that are part of the international space industry.

The SCISYS SPACE Division operates in the UK through SCISYS UK Ltd. and in Germany through SCISYS Deutschland GmbH.

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