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First satellite designed and built in Turkey: RASAT
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RASAT is the second remote-sensing satellite after the launch of Turkey’s first remote sensing satellite BİLSAT of TÜBİTAK UZAY. RASAT, having a high-resolution optical imaging system and new modules developed by Turkish engineers, will be the first Earth-observation satellite to be designed and manufactured in Turkey.
GOALS
To improve know-how from design phase to in-orbit commissioning phase of a satellite project gained from BiLSAT Project,
To develop space qualified systems using current technologies and gaining flight heritage by succeeding in operating these systems in space,
To meet the requirements of Turkey in the sense of remote sensing as much as possible,
To investigate the current capabilities of Turkey for space technologies and to use as much as possible,
To increase number of qualified man power in the field of satellite technologies,
To meet the requirements of Turkish space industry through development of critical modules,
To prove the space-based capabilities of TÜBİTAK UZAY to Turkey and the World. |
| RASAT IMAGE APPLICATIONS |
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Mapping |
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Disaster Monitoring |
Mapping and updating of 1/25.000 scaled maps
DEM and Orthophoto generation
Land use mapping
Land resources cadastre
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Forest fire monitoring and burnt area mapping
Flood mapping and forecasting
Landslide area mapping
Building destruction and damage assessment after earthquake
Making up-to-date thematic maps for disaster management |
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Environment |
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Urban and regional planning |
Identification of deforestration / reforestation areas
Change detection of coastlines
Oil spill detection and pollution mapping
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Monitoring of urban development
Detection of illegal settlement sites
3D simulation
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| TECHNICAL SPECIFICATIONS |
| Turkish EO Satellite |
RASAT |
| Weight |
110 kg |
| Orbit |
700 km circular, sun synchronous |
| Attitude control |
3 axis stabilised |
| Orbital cycle |
98.8 min |
| Local equator crossing time |
10:30 |
| Spatial resolution |
Panchromatic: 7.5 m
Multispectral: 15 m |
| Expected life time |
5 years |
| Spectral resolution (μm) |
0.42 – 0.73 (Panchromatic)
Band 1: 0.42 – 0.55 (Blue)
Band2 : 0.55 – 0.58 (Green)
Band3: 0.58 – 0.73 (Red) |
| Radiometric resolution |
8 bit |
| Temporal resolution |
4 days |
| Swath width |
30 km |
| Payloads |
Optical payload: It comprises a pushbroom type imager with stereoviewing capability.
BiLGE: Flight computer with the capability to utilize Spacewire.
GEZGiN-2: New generation image processor capable of high-speed multi-spectral image. compression using the JPEG2000 algorithms with encryption capabilities
X-Band Transmitter Module: Communication system with 100 Mb/s downlink at 7W output. |
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BiLSAT Project
The aim of BiLSAT project was to initiate, develop and support small satellite technologies in Turkey.
In cooperation with Surrey Satellite Technology Limited (SSTL), the infrastructure for design and manufacturing of small satellites and a ground station were established, and BiLSAT, Turkey's first remote sensing satellite, was manufactured and launched. Also, a Turkish engineering team has worked in cooperation with SSTL engineers in design, manufacturing, test and launch phases of BiLSAT.
Two payloads of the satellite, GEZGIN and COBAN, were designed and manufactured by TÜBİTAK UZAY staff in Turkey and integrated into BiLSAT.
Launch: September 27th, 2003 |
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GEZGIN (Real Time Image Processor)
A satellite sub-system capable of real time multi-band image compression in compliance with JPEG 2000 standard.
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| ÇOBAN (Multi Band Camera) |
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An eight-band multispectral camera with a ground sampling distance of 120 m.
PURPOSE
To produce a camera system that operates in multi-spectral region being a payload for BİLSAT-1 satellite which was designed by Turkish engineers. |
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Satellite Sub-Systems
GEZGİN-2
The new version of the real-time JPEG2000 image compression system, GEZGİN, that will also include total integration of JPEG2000 algorithm and new image processing and encryption capabilities.
X-BANT Communication System
Communication system designed for low earth orbit spacecraft to provide a 100 Mb/s downlink at 7W output using an efficient power amplifier.
BİLGE: (Flight Computer)
A flight computer for use in space missions that require high performance, with the capability to utilize Spacewire, which is a high-speed data bus standard advocated by the European Space Agency (ESA).
Image Archiving, Browsing and Processing System
A system to archive images downloaded from satellites, allowing browsing through the images and processing at various levels.
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uzay.tubitak.gov.tr
