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The objective of the GHOST project is to design, develop and validate a novel on-ground measurement instrument prototype for satellite In-Orbit-Test. The so called In-Orbit-Test (IOT) operation of the satellite payload consists in transmitting and receiving to and from the satellite a specifically designed test signal, mainly a spread spectrum signal, for the measurement and extraction of some key payload parameters such as, on-board filters responses, high power amplifier response, G/T, etc.. The IOT operation is fundamental in several situations during the life-time of the satellite to verify and monitor the performance and functional requirements of the satellite payload.
This project has two main challenges:
The benefits of this product are:
he capabilities of the product are:
The technologies that support these capabilities are:
The selected underlying hardware architecture is based on the concept of Software Defined Radio (SDR), including a reconfigurable digital design platform that uses components such as state of the art DSPs and FPGAs.
From a high level prospective, for the hardware system architecture, a modular concept has been chosen due to its flexibility, scalability, maintainability and upgradability. It consists on splitting the GHOST system in two independent modules (or boards). All “Transmitters”, “Receivers” and “Controller” boards communicate with each other and with other external peripherals via a logical bus.
The software architecture includes the two main components “embedded system software” and “IOT bench controller software”.
The commercialization of the GHOST system as a product is achieved in two phases. The Phase I, covered by this project, it is aimed at designing a novel and competitive non-intrusive IOT system and at implementing and validating it as a pre-production prototype. This is achieved by sequentially completing the following tasks and milestones:
Subsequently, the product development and commercialization will be achieved with Phase II (out of scope of this project).
In line with schedule, the Baseline Design Review (BDR) has been passed successfully in July 2017 and concluded with a set of documentation deliverables, amongst others the Requirements Document, Measurement Algorithms Document, Simulation Results as well as the Design & Architecture Document.
Following the BDR, the System Design work packages have been kicked off to conclude with a planned CDR in November 2017.