The VHF alert network of the SVOM mission
B. Cordier, L. Jeannin, Ph. Lafabrie, G. Chavanas, S. Crepaldi, N. Dagoneau, A. Formica, V. Garcia, L. Jolivet, S. Lacour, H. Louvin, E. Sabatier
TL;DR
This paper describes the design, deployment, and performance of the VHF alert network for the SVOM satellite mission, enabling rapid transmission of alert messages to ground-based instruments.
Contribution
It introduces a novel VHF alert system for SVOM, detailing antenna design, network deployment, and operational performance after one year.
Findings
High availability of the alert network after one year
Low latency in alert message transmission
Effective integration with the French data center
Abstract
The scientific success of the SVOM mission will rely on the rapid transmission of alert messages from the satellite to the scientific community, and in particular to the ground-based instruments supporting the mission. In this paper, we present the alert system developed for SVOM which relies on the rapid transmission of alert messages through the transfer of data packets from an onboard VHF-band radio transmitter to a network of radio receivers deployed along the satellite ground track. We will successively detail the antenna design, radio performance, network deployment, its integration within the French data center, as well as the performance achieved after one year of operation in terms of availability and latency.
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