Tenders are invited for POINTING AND ACQUISITION SYSTEM FOR BEYOND-EARTH OPTICAL COMMUNICATION (ARTES 4.0 SL SPL 5H.004) EXPRO+ - RE-ISSUE Tender Action Number: 1-12712 Activity Number: 1000042509 ISSUE 2 Clarification Request Deadline 27/03/2026 13:00 CET Closing Date Extension Request Deadline 27/03/2026 13:00 CET Announcement Date 21/01/2026 Last Update On 23/01/2026 12:14 CET Update Reason Tender Action Issued Objective: The objective of this activity is to design and demonstrate the beaconless inter-satellite pointing and acquisition of Laser Communication Terminals (LCT) at deep-space distances. Potential LCTlocations shall be Mars, the Lagrange points (L3, L4 and L5) and geostationary orbits.Targeted Improvements:To enable optical inter-satellite communication at beyond-Earth distances (<3 AU).Description:The beaconless pointing and acquisition system shall investigate the use of the stellar background, Earth (or the Sun) to determine the pointing direction with microradian accuracy.Deep-space pointing accuracies with simulated stellar patterns and non-homogenous Earth albedo distributions and crescents (when pointing back to Earth) shall be demonstrated by breadboarding. Read less Directorate Dir. of Connectivity Secure Comm. Estabilishment ESTEC Open Date 23/01/2026 12:12 CET Closing Date 10/04/2026 13:00 CET ECOS Required No Classified No Price Range > 500 KEURO Authorised Contact Person Nathalie Dorval Initiating Service CSC-SQ IP Measure N/A Prog. Reference E/0534-05A - OP-Other Act. Prod. Tender Type Open Competition Open To Tenderers From Technology Keywords 17-D-Optical Communications Technologies Products Keywords 2-G-1-a-Optical terminals Tender Link : https://esastar-publication-ext.sso.esa.int/ESATenderActions/filter/open
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