7 X-band military payload and 50 efficient Ka-band
SGDC with Koreasat-7 atop
02 Jun 2017
SGDC is the first Brazilian government satellite, as well as the initial spacecraft to be launched by Arianespace for Visiona Tecnologia Espacial S.A. – the
SGDC prime contractor, responsible for the program management, overall system integration and end-to-end communication. This dual-use (civil and military) relay platform
will enable the implementation of a secure satellite communications system for the Brazilian government and armed forces, while also reducing the digital divide in Brazil.
Based on the HTS Spacebus 4000-C3 platform, the SGDC satellite carries 57 transponders in Ka- and X-band and is designed for a life of 15 years. It will have a weight of approximately 5,800kg at launch and a payload power of more than 11kW.
The dual-use telecommunications satellite is intended to provide secure strategic defence communications for the Brazilian Ministry of Defence, and broadband services
for the Ministry of Telecommunications, through the National Broadband Plan (PNBL).
The satellite will be positioned in geostationary orbit at an angle of 75° west and will be operated by Visiona Tecnologia Espacial, a joint venture between Embraer
Defense & Security and Telebras Telecomunicaçoes Brasileiras. It is expected to enter service in the first quarter of 2017.
The satellite is fitted with seven X-band military payload and 50 efficient Ka-band payload transponders offering a throughput of 80Gbps.
The five X-band transponders will cover all of South America and neighbouring maritime routes. The Ka-band payload will offer government strategic data communications
and expand broadband services to remote areas in Brazil.
After delays due to social unrest in French Guiana, Arianespace on May 4, 2017 resumed launches with flight VA236 on launcher L589, placing the Brazilian
military communications satellite ′Satelite Geoestacionario de Defesa e Comunicacoes Estrategicas 1′ (SGDC-1) and the Korea Telecom satellite Koreasat-7 in