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Modeling and Identification of Satellite Thermal Radiation Model for Attitude Estimation Using Temperature Sensors

Moghanipour, Marjan | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51775 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Pourtakdoust, Hossein; Kiani, Maryam
  7. Abstract:
  8. Attaining accurate information about satellite attitude is one of the most important requirements in space missions in order to improve the accuracy of the satellite control and mission objectives. Many different sensors such as sun sensor, star sensor, horizon sensor, etc. are used to estimate spacecraft’s attitude. Attitude estimation using temperature sensors is a topic that has recently been addressed by some related researchers because, they need less power and budget to operate in comparison with the other sensors.Accuracy and heat model performance improvement is the main purpose of this project. To achieve a more accurate perspective of space thermal model, and the way heat transfers between the satellite surrounding heat sources and its surfaces are main challenges within this project. Study of the albedo value, radiation heat transfer between heat sources and the satellite surfaces, conduction between surfaces and also the inner radiation generated due to inner equipment of the satellite are the tasks which is accomplished in this project in order to complete and correct the heat model. Identification of the measurement system parameters is exceedingly effective in the system performance improvement. Furthermore, investigation of thermal parameters estimation possibility is the other task which is done in this project. At the end, in order to determine the performance range of the temperature sensors, the accuracy and error value of the determination using temperature sensors has been analyzed
  9. Keywords:
  10. Attitude Estimation ; Temperature Sensor ; Heat Flux ; Radiation ; Conductance ; Albedo Radiation ; Parameter Estimation

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