Abstract
Nowadays, the space operations environment have to face with space safety problems because of the growing of space debris in resident of space objects (RSOs) that can cause a catastrophic collision. In order to prevent debris-related risks in operational orbit, ground-based passive optical telescope network were used as a primary equipment for space debris observation due to the lowest maintenance costs. Furthermore, in technical, a precise tracking (position and velocity) of space objects can be beneficial towards not only orbit determination but also estimation spacecraft collision probability especially, in Low-Earth Orbit regime. National Astronomical Research Institute of Thailand (NARIT) has long experience operate in an observatory to perform both passive & active optical instruments for astrophysics and space sciences missions. In this research, based on Thai National Space objects Observation (TNSO) project, we re-establish the basic understanding of satellite tracking, optical subsystem integration and demonstration a framework so as to enhance the capability of telescope servo control subsystem. We describe the specific solutions adopted for continuous tracking mode and the results obtained during the commissioning of an alt-azimuth mounting equipped with 0.7 meter optical aperture telescope. The observation system can be performed with negligible as continuous tracking error. This contribution will present some of the experimental results and plans for further measurement campaigns.
Highlights
According to the index of Union of Concerned Scientists (UCS), there are 4987 objects currently in orbit around Earth only 1957 are operational satellites
Alt-azimuth Thai National Space objects Observation (TNSO) telescope has been installed at Princess Sirindhorn
TNSO telescope equipped with a complementary metal-oxide semiconductor (CMOS)-type high-resolution sensor that stored as Flexible Image Transport System (FITS)-type gray-scale images with range [0, 255] and the Audio Video Interleaved (AVI) format for video data
Summary
According to the index of Union of Concerned Scientists (UCS), there are 4987 objects currently in orbit around Earth only 1957 are operational satellites. The unexpected on-orbit spacecraft collision (Cosmos-2251 and Iridium-33) and the testing of anti-satellite missile have caused an immense number of fragmentation debris in RSOs that are the part which generates Kessler syndrome [1]. In the new space era, the private sector of space industry are growing by leaps and bounds. They have been proposed lunching over 42,000 constellation satellites in orbit for this decade especially, the SpaceX V-band & Starlink project [2]. The U.S Air Force tracked a priority item of space objects and categorized them against known space debris. The orbital parameters of Earth-orbiting objects have primarily been provided by the North American Aerospace Defense
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