EnMAP Ground Segment: Design and Status of the Integration and Technical Verification and Validation Phase

Abstract

EnMAP (Environmental Mapping and Analysis Program) is a German hyperspectral satellite mission, where the ground segment is operated by the Earth Observation Center (EOC), and the German Space Operation Center (GSOC) of the German Aerospace Center (DLR). The ground segment comprises all the facilities and systems required on Earth to control and operate the mission. It specifically facilitates access for the user segment to the space segment, including the commanding of the satellite, ordering and receiving data, and finally the processing, archiving and distribution of data. The Ground Segment consists of three sub-segments (the Mission Operations Segment, the Payload Ground Segment and the Processor and CalVal Segment), further decomposed into fifteen subsystems. By the time of the presentation it has just finished its Production Phase, where the subsystems were procured, clearly stating their readiness for integration into the Ground Segment by their Technical Verification and Validation. These subsystems are now integrated and their common functioning verified. Two main topics are identified as follows: on the one hand the status of the Ground Segment's subsystems is presented. On the other hand the focus of the presentation lies in the design of the ITVV Phase. During this phase the ground segment and its subsystems have to prove their capability for ordering, commanding, receiving, processing, archiving and distributing the mission's data according to the requirements imposed on it. This is performed in different stages. The presentation starts with an overview of the development model of the ground segment. This comprises its contributing fifteen subsystems and their interfaces as well as use cases accounting for the dynamic nature of the ground segment. Further the organisation of the requirements is shown, which are validated during the ITVV phase. Based on that knowledge the different stages of the ITVV Phase are presented, starting out with the subsystem verification on different levels. This is followed by the sketch of the verification of the interfaces and the ground segment's verification based on scenarios.