Earth Observation Satellites
type: Concept

TIUNGSAT-1
change note: 2021-11-30 09:37:33.0 [tstevens] Move Concepts delete broader relation (null); add broader relation (TIUNGSAT-1 [f1503638-4366-4025-8d27-6aefedc4c4dd,826893] - Earth Observation Satellites [3466eed1-2fbb-49bf-ab0b-dc08731d502b,826121]);
change note: 2021-11-18 12:41:10.0 [tstevens] Move Concepts delete broader relation (null); add broader relation (TIUNGSAT-1 [f1503638-4366-4025-8d27-6aefedc4c4dd,826893] - Space-based Platforms [b39a69b4-c3b9-4a94-b296-bbbbe5e4c847,835875]);
in scheme: platforms
definition: TiungSat-1 is Malaysia's first national microsatellite. It was designed and developed in a collaborative effort between the Malaysian government, under the government appointed company ATSB \\[Astronautic Technology (Malaysia) Sdn. Bdh.\\] of Kuala Lumpur, and SSTL (Surrey Satellite Technology Ltd.) of Surrey, UK. In the view of the Malaysian government, the satellite development program was seen as an impetus for expanding Malaysia's capability in the area of high-technology industry. The first satellite was named "Tiung" after a beautiful small singing bird in Malaysia. Astronautic Technology Sdn. Bhd. (ATSB) is a research and development organization, which was formed in 1995 by the government of Malaysia. The TiungSat-1 specific applications are in the following fields: * Collection of imagery for environmental and meteorological use * Digital S&F (Store & Forward) communications * Technology demonstration * Space science * Amateur radio access Spacecraft: The TiungSat-1 S/C structure comprises eleven module trays used to house the electronics for the bus and payload systems. The box-like spacecraft has a size of 690 mm x 360 mm x 360 mm; it is three-axis stabilized using a gravity-gradient boom (6 m boom with tip mass), two 3-axis magnetorquers, and a momentum wheel. Attitude is sensed by two 3-axis magnetometers and by two-axis analog sun sensors. In addition, there are UED (Underneath Earth Detector) and SOD (Sun Overhead Detector). The pointing knowledge is in roll and pitch and in yaw (3 sigma values). The S/C power is 35 W per panel, provided by four surface-mounted GaAs solar panels and by a 10-cell NiCd battery (7 Ah). The power subsystem provides regulated voltage supplies at +5V and 10V along with an unregulated supply which fluctuates between 12-14 V. Autonomous functions, safe modes and data are handled by two OBCs (On-Board Computer), OBC-186 and OBC-386. Onboard data handling via a CAN (Controller Area Network) between platform and payloads. The on…
type: Concept