Date : 2nd September 2009 (Wednesday)
Time : 11.00am-12.30pm
Place : DKG 3/9, UUM
Telecommunication to me is quite a strange thing. May be I rarely take the advantage on it. But today class exposes me to many new components in telecommunication. However, I think the one I used the most frequently is Wi-Fi.
Satellite is one among the new advanced technology device. RazakSAT is a Malaysian satellite carrying a high-resolution camera. It was launched into low earth orbit by a Falcon 1 rocket on July 12, 2009. It was placed into a unique near-equatorial orbit that presents many imaging opportunities for the equatorial region.
MACSAT (Medium-sized Aperture Camera Satellite) development project is a joint development program between Astronautic Technology (M) Sdn. Bhd. of Malaysia and Satrec Initiative, which started from end of 2001 and aimed to complete the development by the end of 2003. MACSAT has now been renamed RazakSAT.
The objectives of the project are to provide high-resolution images for Malaysia and build Malaysian space technology capabilities through ATSB®. In order to meet the technology objective, a cost-effective high resolution imaging system for Earth observation specifically for a small satellite less than 200 kg was implemented. RazakSAT carries the Medium-sized Aperture Camera (MAC) that will provide 2.5m resolution panchromatic and 5.0m resolution multi-spectral images. This project involves the design, development, launch and operations of the satellite.
The RazakSAT satellite is planned to be launched near in the future on a USA launcher Falcon 1 owned and operated by the company Space Exploration Technologies (SpaceX). It will be a dedicated launch from kwajalein in the Republic of Marshall Islands which is situated very close to the equator to give the best orbital injection for RazakSAT, i.e. near equatorial orbit (NEqO). RazakSAT®s images would be applied to forestry, fishery, migration and other areas that will benefit the nation.
ATSB is also involved in Sg Lang Ground Station implementation project committee. ATSB has assisted in development of the system specification to support RazakSAT Mission Control Station (MCS) and Image Receiving and Processing Station (IRPS).
The MACSAT mission is to develop and validate technologies for a Near Equatorial Orbit (NEO) remote sensing mini-satellite system to acquire medium high resolution images. Due to its orbital and coverage characteristics, Malaysia and other countires in Equatorial region can have large benefit from NEO satellite operation. From the low Earth circular orbit of 685 km altitude with 9 degrees of inclination, geographical information and environment change over equatorial region can also be regularly observed with a unique revisit characteristic.
| Nation | Malaysia |
| Type / Application | Earth observation |
| Contractors | Astronautic Technology (M) Sdn. Bhd, Satrec Initiative |
| Equipment | MAC |
| Configuration | |
| Mass | 200 kg |
| Orbit | 675 x 695 km, 9° |
| Subsystems | Specifications |
| Altitude | 685 km |
| Inclination | 9 ° |
| Payload (MAC) | GSD : 2.5 m (PAN), 5 m (MS)
|
| Attitude Determination & Control Subsystem (ADCS) | Three-axis stabilization based on four (reaction wheels)
|
| Electrical Power Subsystem (EPS) | GaAs/Ge solar cells on honeycomb substrate
|
| Command & Data Handling Subsystem (C&DH) | Two on-board computers
|
| Telecommunication Subsystem (TS) | 9,600 bit/s / 1,200 bit/s S-brand TT&C uplink
|
| Payload Data Management | 32 Gbit On-board solid-state memory
|
| Structure & Thermal | Ø1,200 x 1,200 mm Hexagonal shape
|
| Mission Lifetime | > 3 Years |
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