# Methodology for CubeSat Debris Collision Avoidance Based on Its Active ADCS System
## 5 Conclusions  
This research has undertaken a comprehensive examination of the feasibility of establishing a methodology aimed at mitigating the risk of collisions involving CubeSats lacking propulsion systems. The methodology hinges on the alteration of the satellite's orientation, thereby modifying its cross-sectional area, which in turn influences the drag force. This dynamic adjustment has been explored across a spectrum of satellite altitudes within LEO and encompasses three CubeSat formats: 2U, 3U, and 6U. The effects of these orientation changes have been scrutinized in the context of maneuvers recommended two days before the TCA. For each scenario under investigation, an assessment of the disparity in the satellite's horizontal and vertical positions within a LVLH reference system at TCA has been conducted. This analysis entails a comparison with the threshold miss distances established by CDMs. The results are noteworthy, revealing a minimum deviation of 7% and a maximum deviation of 106% in the VDD, along with a minimum of 68% and a maximum of 1045% in the HDD, all concerning the notification threshold. These findings provide compelling support for the practicality of the proposed collision avoidance methodology tailored specifically for CubeSats, utilizing their ADCS system. Ongoing efforts in this research endeavor are now focused on investigating the rate at which the ADCS system can execute these maneuvers and assessing the time required for their implementation, further advancing our understanding and applicability of this innovative approach to CubeSat collision avoidance. An application of the application of the Extended Kalman Filter (EKF) is introduced, specifically customized for the precise control of reaction wheels in CubeSats. Unlike conventional applications, this algorithm has been meticulously designed to address the inherent constraints associated with CubeSats, including restricted computational resources, stringent power limitations, and the imperative consideration of weight. Recognizing that CubeSats typically operate within these challenging parameters, the algorithm's adaptability to such constraints makes it a noteworthy advancement in the field. Rigorous testing in a laboratory setting has substantiated the algorithm's efficacy, revealing its capability to perform seamlessly under realistic conditions. The validation process not only underscores the algorithm's reliability but also positions it as a promising solution for the intricate task of managing the attitude control in CubeSats. Of particular significance is the algorithm's emphasis on computational efficiency and power frugality, two critical attributes in the context of CubeSat technology. Given the miniature scale of CubeSats and their reliance on limited resources, the algorithm's efficiency becomes paramount. The research team's dedication to developing a methodology that not only meets performance expectations but also operates within stringent power constraints sets a new standard for attitude control in small satellite systems. By demonstrating its computational efficiency and power thrifitness, this research not only contributes a valuable tool for CubeSat missions but also marks a substantial stride toward overcoming the persistent challenges associated with resource-constrained environments in the realm of space exploration. **Author Contributions:** Methodology, P.O.-C., C.C. and F.A.-A. ; Software, P.O.-C.; Validation, C.C. ; Formal analysis, D.G.-R.; Investigation, D.G.-R.; Resources, P.O.-C., C.C. and F.A.-A. ; Writing--original draft, D.G.-R. and P.O.-C.; Writing--review & editing, C.C. and F.A.-A. ; Project administration, F.A.-A. All authors have read and agreed to the published version of the manuscript. **Funding:** This research received no external funding. **Institutional Review Board Statement:** Not applicable. **Informed Consent Statement:** Not applicable. **Data Availability Statement:** Data available on request due to restrictions.