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In order to provide space operations support to the launch vehicles during the launch and initial phase, ISRO Telemetry, Tracking and Command Network (ISTRAC), Bengaluru, has designed and developed a Ship Borne Transportable (SBT) Antenna Terminal that meets the launch vehicle Telemetry Tracking and Command (TTC) requirements.

The 4.6 meter Ship Borne Transportable (SBT) Antenna System has been built indigenously, fulfilling all the specifications and has established an in-house capability for meeting future requirements, the space agency said.

The Antenna system was realised with the participation of Indian Industries and has been tested and validated on a motion simulator, the agency added.

“For the Deep Space Missions of ISRO, a large number of ground stations are required to provide TTC support. Based on the launch vehicle trajectory and visibility requirement, many a time TTC stations are to be located mid-sea, where conventional Ground Stations Antenna will not be suitable,” it added.

The SBT Antenna System consists of 3-axis Antenna Mount, a Motion Simulator, Reflector and Feed, Servo Control Systems and RF Electronics, operational within the range of about 3 kHz up to 300 GHz.

The final system performance and validation were carried out by a sea-trial. The SBT system was integrated on Sagar Manjusha Ship hired from National Institute of Ocean Technology (NIOT). The ship, stationed at a specific observation point in Bay of Bengal successfully tracked PSLV-C38 launch vehicle, ISRO confirmed.

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