Tenders Are Invited For Swarm Satellite System Architecture (Artes At 3A.213) - Expro+

Tenders are invited for Swarm Satellite System Architecture (Artes at 3a.213) - Expro+ The objective of the activity is to develop a system concept of a satellite swarm (group of satellites orbiting information) enabling direct to device telecom missions in UHF/L/Sbands. The developed concepts will be implemented and evaluated in a swarm system simulator.Targeted Improvements:- Enable synthetic antenna gain in the range of 40 dBi in low frequency bands (UHF/L/S bands).- Enable communications with unmodified terrestrial devices (e.g. handheld, automotive, IoT) with downlink and uplink data rates in the range of up to several Mbps.Activity Description: Typically, individual satellites prevent high antenna gains in low-frequency bands (UHF/L/S bands) beyond the 30 dBi range. The implementation of satellite swarms may enablenew services and applications (e.g. handheld, automotive, IoT) that can be deployed in a scalable and incremental way and optimising the use of the launcher capacity. Theswarms distributed nature also provides inherent robustness against single-point failures, enhancing the systems reliability.This activity will develop a system concept of satellite swarm for at least one of the use cases (e.g. GEO, LEO, MEO, handheld, automotive, IoT), enabled by the creation of a large gain synthetic antenna aperture thanks to coherent processing of signals from a formation of radiating arrays in space. This requires synthetic beamforming in space with high number of narrow beams, tight synchronisation and position/attitude control, possibly aided by inter satellite links and real time calibration from ground reference stations.The developed concepts will be implemented in a software simulator for constellations for telecom applications and compare to non-swarm satellite systems.The swarm system simulator will model the key system building blocks and their related impairments acting thesystem performances (e.g. synchronisation, latency/jitter/throughput during signals distribution according to the inter-satellitelinks architecture, multi-beam, grating lobes, formation flying dynamics, user equipment waveforms).The swarm system simulator willserve as a virtual environment to evaluate the system performance including throughput, system capacity, inter-system interference and co-existence/integration with other satellite/terrestrial systems, availability) for the selected use cases and compare to referencescenario.Read more Tender Link : https://esastar-publication-ext.sso.esa.int/ESATenderActions/filter/open

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