Design and Simulation of a High-Speed Star Tracker for Direct Optical Feedback Control in ADCS
Star Trackers are often the most accurate instrument in an Attitude Determination and Control Systems, but often present a slow update rate, requiring additional sensor and sensor fusion algorithms to provide a smoother and faster output. However, the available rate gyros are either noisy, or expens...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/20/8/2388 |
| _version_ | 1797569915581890560 |
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| author | Mikaël Marin Hyochoong Bang |
| author_facet | Mikaël Marin Hyochoong Bang |
| author_sort | Mikaël Marin |
| collection | DOAJ |
| description | Star Trackers are often the most accurate instrument in an Attitude Determination and Control Systems, but often present a slow update rate, requiring additional sensor and sensor fusion algorithms to provide a smoother and faster output. However, the available rate gyros are either noisy, or expensive and heavy. The proposed work investigates the feasibility of high-speed star trackers with modern optics, sensors, and computing systems. Firstly, we investigate the sensitivity of an optoelectrical acquisition system stimulated by dim stars, secondly, we propose and evaluate an algorithm designed to operate at high speed and to be compatible with an Field-Programmable Gate Array implementation, before evaluating the performance of the implementation on FPGA. Finally, we debate the usability of such a system, both in terms of compatibility with a mission and CubeSat ecosystems, and in terms of performance. As a result, aside from removing the need for a rate gyro, Attitude Determination and Control Systems overall pointing performances can be increased. The proposed attitude determination system achieved a 0.001° accuracy, with a 99.1% sky coverage and an ability to reject false-positive while performing a single-frame lost-in-space star identification at a 50 Hz update rate with a total delay of 19 ms, including 13 ms. |
| first_indexed | 2024-03-10T20:18:04Z |
| format | Article |
| id | doaj.art-23694a64a1d440e6929557fbb1c80f80 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T20:18:04Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-23694a64a1d440e6929557fbb1c80f802023-11-19T22:23:49ZengMDPI AGSensors1424-82202020-04-01208238810.3390/s20082388Design and Simulation of a High-Speed Star Tracker for Direct Optical Feedback Control in ADCSMikaël Marin0Hyochoong Bang1Aerospace Systems and Control Laboratory, Korea Advanced Institute of Sciences and Technologies, Daejeon 34141, KoreaAerospace Systems and Control Laboratory, Korea Advanced Institute of Sciences and Technologies, Daejeon 34141, KoreaStar Trackers are often the most accurate instrument in an Attitude Determination and Control Systems, but often present a slow update rate, requiring additional sensor and sensor fusion algorithms to provide a smoother and faster output. However, the available rate gyros are either noisy, or expensive and heavy. The proposed work investigates the feasibility of high-speed star trackers with modern optics, sensors, and computing systems. Firstly, we investigate the sensitivity of an optoelectrical acquisition system stimulated by dim stars, secondly, we propose and evaluate an algorithm designed to operate at high speed and to be compatible with an Field-Programmable Gate Array implementation, before evaluating the performance of the implementation on FPGA. Finally, we debate the usability of such a system, both in terms of compatibility with a mission and CubeSat ecosystems, and in terms of performance. As a result, aside from removing the need for a rate gyro, Attitude Determination and Control Systems overall pointing performances can be increased. The proposed attitude determination system achieved a 0.001° accuracy, with a 99.1% sky coverage and an ability to reject false-positive while performing a single-frame lost-in-space star identification at a 50 Hz update rate with a total delay of 19 ms, including 13 ms.https://www.mdpi.com/1424-8220/20/8/2388star trackerstar detectionhigh-speedIMU-freeerror correctionattitude determination |
| spellingShingle | Mikaël Marin Hyochoong Bang Design and Simulation of a High-Speed Star Tracker for Direct Optical Feedback Control in ADCS Sensors star tracker star detection high-speed IMU-free error correction attitude determination |
| title | Design and Simulation of a High-Speed Star Tracker for Direct Optical Feedback Control in ADCS |
| title_full | Design and Simulation of a High-Speed Star Tracker for Direct Optical Feedback Control in ADCS |
| title_fullStr | Design and Simulation of a High-Speed Star Tracker for Direct Optical Feedback Control in ADCS |
| title_full_unstemmed | Design and Simulation of a High-Speed Star Tracker for Direct Optical Feedback Control in ADCS |
| title_short | Design and Simulation of a High-Speed Star Tracker for Direct Optical Feedback Control in ADCS |
| title_sort | design and simulation of a high speed star tracker for direct optical feedback control in adcs |
| topic | star tracker star detection high-speed IMU-free error correction attitude determination |
| url | https://www.mdpi.com/1424-8220/20/8/2388 |
| work_keys_str_mv | AT mikaelmarin designandsimulationofahighspeedstartrackerfordirectopticalfeedbackcontrolinadcs AT hyochoongbang designandsimulationofahighspeedstartrackerfordirectopticalfeedbackcontrolinadcs |