To study methods and algorithms of determining and controlling satellite movement and satellite attitude by mathematical modeling and dynamics analysis; To development simulation softwares for satelite movement monitoring and satelite attitude control; To design and integrate a semi-physical simulation system for ADCS module (Attitude Determination and Control Systems) of small satellites in low-earth orbits; To approach to new methods of designing the ADCS system for small satellites in order to use these results in research, training and applications.

Theoretical results: The research project studied in a systematic way on the scientific and technological bases of the ADCS module for small satellites of Earth observation and the methods of modeling and simulation used in analyzing and designing of this module. In particular, some algorithms and softwares for determining and controlling the trajectory and the attitude of small satellites in low-earth orbits have been developed and the technological process of  manufacturing and integration of the ADCS semi-physical simulation system has been learned and mastered. This is the content of scientific research and high technology, which has been implemented so far for the first time in Vietnam.

Technological results: The projects has developed successfully 2 simulation softwares based on MATLAB/Simulink tool (the software for monitoring and adjusting satellite orbits and the software for determining and controlling satellite attitude in 3 degrees of freedom), which have interfaces to input data  and display outputs in the form 2D or 3D graphs. The project has designed, manufactured and upgraded a device of ADCS semi-physical simulation based on the air-bearing structure (ADCS air-bearing simulator) which satisfies basically all technical characteristics required.

Training results: The project has completed two book’s manuscripts devoted to theory of determination and control of satellite orbits and attitudes which can be used for  undergraduate and graduate students. In addition, the project has also participated in training 2 masters and 3 graduates in the fields of research related to the project’s topic.

• Scientific papers in referred journals (list)

1. Nguyen Khoa Son, Nguyen Duc Cuong, Pham Anh Tuan, Vo Duc My, Nguyen Thanh Tuan, Bui Nam Duong, Le Xuan Huy, Nguyen Huy Thuy, A semi physical simulator for attitude determination and control of small satellite, Collection of 35th Anniversary of Vietnam Academy of Science and Technology Symposium – Hanoi, 26/10/2010, page 151-156.
2. Nguyen Huu Diep, Bui Nam Duong, Hoang The Huynh, Ha Van Quang, Nguyen Khoa Son, Pham Anh Tuan, Nguyen Thanh Tuan, A software to simulate and control the satellite attitude determination and control subsystem by 3 axes, Proceedings of the 5th Vietnam National Conference on Mechatronics, 10/2010, page 179-183.
3. Pham Thuong Cat, Nguyen Khoa Son, Pham Minh Tuan, Nguyen Van Tinh, Nguyen Tien Kiem, Research on simulating satellite attitude determination and control subsystem simulator for LEO small satellite using three reaction wheels, Proceedings of the 5th Vietnam National Conference on Mechatronics, VCM2010, October/2010, page 168-174.
4. Nguyen Duc Cuong, Hoang Anh Tu, Satellite orbit calculation considering non-spherical effect of the Earth, atmospheric drag and the thrust vector, Proceeding  of the 5th Vietnam National Conference on Mechatronics, VCM2010, October/2010, page 17-22.
5. Pham Thuong Cat, Nguyen Khoa Son, Pham Minh Tuan, Optimal control for LEO small satellite using three magnetic torquers, Proceeding of Space Science Technology and Application Conference-2010, page 49-60.
6. Nguyen Khoa Son, Nguyen Duc Cuong, Pham Anh  Tuan, Nguyen Thanh Tuan, Bui Nam Duong, Le Xuan Huy, Vuong Thi Dieu Huong, Satellite Attitude determination and control simulator for small satellite, Proceeding of Space Science Technology and Application Conference-2010, page 70-77.
7. Nguyen Duc Cuong, Hoang Anh Tu, Methods to control satellite orbit, Proceeding of Space Science Technology and Application Conference-2010, page 100-107.
8. Nguyen Khoa Son, Nguyen Duc Cuong, Hoang Anh Tu, Orbital Parameter Adjustment for Satellite using micro thruster, Journal of Military Science and Technology, 8/2011.
9. Nguyen Duc Cuong, Hoang Anh Tu, Calculating satellite orbital parameters considering disturbance using numerical method, Journal of Military Science and Technology, 8/2011.

• Technological products (describe in details: technical characteristics, place)

• University of Science and Technology Hanoi (USTH)
• College of Technology (Hanoi National University).

Vietnam Academy of Science and Technology and Ministry of Science and Technology should continue investment for research on determination and control of satellite orbits and satellite attitudes. In particular, it is meaningful to support financially a further project on upgrading the existing ADCS simulator and bringing it to the permanent service of training and scientific research.