Analysis and Design of Attitude Determination and Control Systems Onboard Micro Satellites Utilizing Spaceborne Synthetic Aperture Radar
Bibliographic record
Abstract
<p>Spaceborne Synthetic Aperture Radar (SAR) traditionally uses larger satellites in Sun synchronous orbits to provide high resolution image quality during any time of day or weather condition. This thesis describes the Attitude Determination and Control System (ADCS) for a micro-class satellite with a SAR antenna onboard (12U, CubeSat). The objective is to study how smaller satellites operate with SAR systems onboard utilizing a three reaction wheel configuration and a bias-momentum satellite using magnetic control. The viability for pointing a CubeSat containing SAR systems (Cube-SAR) is validated using a constructed high fidelity simulator which models system dynamics, actuators and sensors, the attitude filter, and the two control configurations. This thesis also discusses hardware selection and the application of zero Doppler steering for Cube-SAR. The results show that the system is controllable using the bias-momentum satellite, however it has restrictions that the fully stabilized three wheel case does not. </p>
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".