Multi-mission Direct Access Terminal for PAZ, TerraSAR-X and other Satellites
GSTP: Make Project: Multi-mission Direct Access Terminal for PAZ, TerraSAR-X and other Satellites
|Indra Sistemas S.A. (Prime Contractor)||Spain||http://www.indracompany.com|
|Hisdesat Servicios Estratégicos S.A.||Spain||http://www.hisdesat.es|
Thinking globally, acting locally: this is the simple idea behind the Multi-mission Direct Access Terminal project for PAZ, TerraSAR-X and Tandem-X satellites.
The aim is to develop a prototype of a remote processing facility of SAR data, able to receive X-band raw telemetry data of the Joint Constellation and to process them up to standard image products, with a groundbreaking near-real-time performance.
The scalable design and architecture, in terms of storage area and computing resources, will easily allow to give access to the data coming from more future Earth Observation missions, both radar and optical, and to integrate new higher level processors to generate value-added products.
Just deploy an M-DAT, connect it to a compatible X-band ground station antenna equipped with demodulation equipment, and the fastest direct gate to the Joint Constellation data is in your hands.
The M-DAT project starts from the experience achieved by Indra Sistemas during the design and AIV activities of the PAZ and Ingenio Mission Ground Segments.
The GCORE software product, which is developed, maintained and evolved by the company, is the powerful heart of the proposed data processing system to provide full access to the data generated by the missions PAZ and TerraSAR-X, thanks to the Joint Constellation agreement between HISDESAT and AIRBUS.
Main objective of the DAT is to give to the potential customers the capability to download radar data on their own and to generate standard image products in a very fast way, just a few minutes after the end of the satellite contact with the ground station.
System design is fully oriented to optimise the near-real-time performance in order to have quick response times in emergency and crisis situations which require Earth Observation image products. DAT is designed with the objective to easily integrate additional value-added processors in order to generate higher level products to cover a wider range of SAR data applications.
Data confidentiality is a key driver in order to provide an independent and secure access to huge amount of data, since the target is to build a system able to generate up to 100 image products per day, and to easily upgrade it to manage and process data coming from future missions.
The key features of the proposed Multi-mission DAT are:
- Ingestion, deciphering and processing of SAR instrument data for the Joint Constellation including PAZ and TerraSAR-X missions
- Generation of standard products SRE, NRT y L1B, from new SAR acquisitions and from local catalogue products
- Multi-mission design, which reduces the cost to add new satellites and will preserve customers’ investment made in the DAT, which can be easily adapted for new missions without the need of procuring additional DATs for each specific mission.
- Flexibility to add higher level processors within the DAT itself to generate value added products from the satellite images. This architecture approach – everything packed in the same system - has important benefits for NRT applications since it shortens the availability time of the higher level products (e.g. a ship detection report).
- Outstanding NRT performance with a distributed computation system: the goal is generating all image products from the raw data downloaded during a satellite contact within few minutes from the Loss of Sight.
- Up to 100 standard products can be generated on a daily basis, either from new acquisitions or from catalogued products
- Scalable architecture, suitable for the specific customer needs. Scalability can be horizontal (storage improvement and increasing number of processing hosts) and vertical (upgrading HW characteristics).
- Periodical repatriation of the SAR Raw Exchange data to the Mission Ground Segments for central archiving, preserving data confidentiality.
- Virtualization based solution for easy deployment, ease of maintenance and independence of the HW solution (including refurbishment).
The activities have been organized in the following three phases:
Phase 1: Requirements Analysis and Preliminary Design
During Phase 1 DAT system requirements are analysed and a preliminary design is carried on. Requirements consolidation will be reviewed internally before starting the preliminary design period. It ends at the DAT Preliminary Design Review (DAT-PDR). In that moment the phase is considered completed.
Phase 2: Detailed Design
The purpose of this phase is to consolidate the system design, providing details of the components. DAT elements will be defined to a level of detail and understanding such that the implementation and test activities can be performed. The final design of the DAT will be reviewed at detailed level in the DAT-CDR review. SW test procedures to be executed at Phase 3 are consolidated and almost ready to be executed. It ends at the DAT Critical Design Review (DAT-CDR). In that moment the phase is considered completed.
Phase 3: Development and Acceptance Testing
Phase 3 mainly concerns software development, testing, troubleshooting, verification and validation activities as foreseen by the Test Plan and the Test Procedures. Software is coded and progressively integrated into the development platform. The development and testing of the DAT and the activities of components integration are executed previously to Internal testing activities. The development activities aimed at correction of SW problems report will continue since completion of Internal Testing until successful completion of DAT-FAT. A FAT-TRR will be organized in order to review the readiness of the system to go to Factory Acceptance Tests.
The system validation ends up at the DAT Factory Acceptance Testing TRB (DAT-FAT).
Finally, a Final Review will be scheduled. In that moment the project is considered completed, 16 months after DAT-KO.
Main issues for the Multi-mission Direct Access Terminal architecture concern the data ageing performance, i.e. most design effort is devoted to shorten processing time and to reduce data transfer and handling delays to the maximum extent.
At the same time, the DAT is conceived as a multi-mission system, with the aim to be easily upgraded and expanded to handle more future EO missions. With this respect, the processing resources can be also expanded to deal with data coming from other ground stations, connected to and remotely commanded by the DAT.
Expected Main Benefits
SAR applications market has been developing in the last years; missions like Sentinel-1, RADARSAT-2, TerraSAR-X/TanDEM-X or Cosmo-SkyMed are expanding the market.
To introduce in the market a Data Access Terminal (DAT) for receiving their own acquired data in the shortest possible time within their Area of Interest (AOI) is a business opportunity
The use of a DAT is addressed to customers who are demanding high amount of products, either images or services, in less time in order to be capable to provide valued added services to potential customers, both civilian and military. The main customers for DAT are the Governments or Institutions and Agencies with national dependencies which dealing to monitor frontiers, coasts, forest, agriculture, surface movements, volcanology, cartography, etc.
- The best spatial resolution in the market, 0.25m.
- The best expected remaining life time for the satellites, considering new satellites included into the constellation.
- An affordable price for a multi-mission concept DAT.
- State of the art technology in the DAT for best customer investment protection.
Current Status (18/4/2018)
The M-DAT integration campaign has been completed and the third software version V1.2.0 has been deployed on the validation platform in order to start the final on-site acceptance phase. All issues detected up to now have been solved and the SW development team is still working hard improving monitoring and control functions, in order to provide to the customers a better experience from the operational point of view. Thanks to the successful launch of PAZ satellite on 22nd of February, the Hisdesat-Airbus constellation is now closer than ever. The end of M-DAT project is envisaged by the end of July, at almost the same time when PAZ is expected to begin its nominal operational phase. The M-DAT has been already tested with several data coming from TerraSAR-X and TanDEM-X satellites, but the overall team is looking forward to receive and process first PAZ images with M-DAT!
|Project Manager:||Mercedes Rodríguez Lópezemail@example.com|
|C/ Mar Egeo 4, 28830 San Fernando de Henares (Madrid)||Indra Sistemas S.A.|
|Technical Manager:||Daniele Scaranarifirstname.lastname@example.org|
|C/ Mar Egeo 4, 28830 San Fernando de Henares (Madrid)||Indra Sistemas S.A.|
|ESA Technical Officer:||Nicolas Giraultemail@example.com|
Last update: 18 April 2018