First LEO Satellite Built in Turkey: RASAT

Leloğlu, Uğur Murat
BiLSAT* project was the first step to initiate and to improve satellite technologies in Turkey and it covered all major steps to establish the necessary infrastructure in Turkey to design, build and test a LEO satellite entirely in the country. As a second step, RASAT project has been initiated in year 2004. Except for some systems; like imaging system and solar panels, the technology of which are not yet available in Turkey; RASAT Will totally be built and integrated at TUBITAK-UZAY facilities. The imaging system will have ground sampling distances of 7.5 in for panchromatic imaging, and 15 in for multispectral (red, green, blue) imaging which is an improvement compared to the imaging system of BiLSAT. What is so important about RASAT is that various new modules will also be flown for the first time on this satellite and will be tested in space for flight heritage. These modules will later form the core of future Turkish satellite, should they be successfully demonstrated in orbit. RASAT, similar to its predecessor BiLSAT, will be launched into a sun synchronous orbit at an altitude of about 700 km and an LTAN of 10:00AM or 10:30AM depending on the launch vehicle availability. The satellite will be commissioned and controlled from TUBITAK-UZAY ground station. Once the commissioning is over, the imagery data acquired from the satellite will be archieved and will be available to users. The experimental payloads will also be tested in space and thus TUBITAK-UZAY will spend a significant amount of operation time fory these experiments. The experience acquired from the RASAT project will later be used to develop further subsystems to fly in space in the future satellite projects.


Feasibility study on thermal survivability of X-Band subsystem on RASAT microsatellite
Okan, A (2005-06-11)
After the launch and commissioning of the first Turkish remote sensing satellite BILSAT-1(center dot), TUBITAK BILTEN has initiated the RASAT microsatellite project. RASAT will be a remote sensing microsatellite at low Earth orbit (LEO), with a mass of around 100 kg and an orbital average power of 38W. RASAT is planned to he launched in 2007 and will be the first satellite to be designed and manufactured entirely in Turkey.
Satellite attitude control by integrator back-stepping with internal stabilization
Doruk, Resat Oezguer; Kocaoglan, Erol (2008-01-01)
Purpose - This paper aims to focus on the implementation of the integral back-stepping control on the model of BILSAT - 1 satellite of the Turkish Scientific and Technological Research Council (TUBITAK).
BILSAT-1 communication subsystem
Belce, O; Telli, A; Maynard, K (2003-11-22)
TUBITAK-BILTEN has initiated a project to develop and propagate small satellite technologies in Turkey. As part of this initiative, TUBITAK-BILTEN has worked with Surrey Satellite Technologies Limited (SSTL) to develop a 100 kg class enhanced microsatellite, BILSAT-1*. With the successful completion of this project, TUBITAK-BILTEN will be capable of producing its own satellites, covering all phases from design to production and in-orbit operation. The project was started in August 2001 and BILSAT-1, shown i...
Numerical and experimental investigation of the thermal behavior of a newly developed attitude Determination Control Unit in a Vacuum environment
ÖMÜR, Cem; UYGUR, A Bilge; IŞIK, H Gürgüç; Tarı, İlker (2011-06-11)
Within the framework of satellite programs carried out in Turkish Aerospace Industries, Inc. (TAI), a new Attitude Determination Control Unit (ADCU) has been developed. The present study involves the Thermal Vacuum Cycling Tests (TVCT) performed on the ADCU and the thermal mathematical model developed in order to assess the thermal behavior of the equipment under vacuum environment. For the qualification of the ADCU, 8 cycles of TVCT has been performed in a Thermal Vacuum Chamber (TVC). By demonstrating tha...
In service seismic strengthening of RC framed buildings
Tankut, Tugrul; Ersoy, Ugur; Ozcebe, Guney; Baran, Mehmet; Okuyucu, Dilek (2005-06-01)
An innovative non-evacuation retrofitting technique has been developed for RC buildings, which form the major portion of the existing stock in Turkey. The introduction of cast-in-place RC infill walls, connected to existing frame members, is known to be very effective in improving the overall seismic performance. However, this technique is not suitable since it involves messy construction work and requires evacuation. The idea behind the proposed method is to transform existing hollow masonry infill walls i...
Citation Formats
G. YÜKSEL, A. OKAN, and U. M. Leloğlu, “First LEO Satellite Built in Turkey: RASAT,” 2007, Accessed: 00, 2020. [Online]. Available: