Space Operations Monitoring Based on a New Statistical Principle Component Analysis Algorithm | ||||
| International Conference on Aerospace Sciences and Aviation Technology | ||||
| Article 21, Volume 16, AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015, May 2015, Page 1-17 PDF (754.9 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/asat.2015.22909 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| B. Nassar1; W. Hussein1; M. Mokhtar2 | ||||
| 1Egyptian Armed Forces, Egypt. | ||||
| 2Professor of Electrical Engineering and Chairman of the National Authority for Remote Sensing and Space Sciences. | ||||
| Abstract | ||||
| The crucial concern of satellite operations is to ensure the health and safety of satellites. The worst case in this perspective is probably the loss of a mission but the more common interruption of satellite functionality can result in compromised mission objectives. All the data acquiring from the spacecraft are known as telemetry (TM), which contains the wealth information related to the health of all its subsystems. Each single item of information is contained in a telemetry parameter, which represents a time-variant property (i.e. a status or a measurement) to be checked. As a consequence, there is a continuous improvement of TM monitoring systems in order to reduce the time required to respond to changes in a satellite's state of health. A fast conception of the current state of the satellite is thus very important in order to respond to occurring failures. Statistical multivariate latent techniques are one of the vital statistical learning tools that are used to tackle the aforementioned problem coherently. Information extraction from such rich data sources using advanced statistical methodologies is a challenging task due to the massive volume of data. To solve this problem, in this paper, we present a new unsupervised statistical algorithm based on principle component analysis (PCA) latent technique. The algorithm is particularly applied to an actual remote sensing spacecraft. Data from the attitude determination and control subsystem (ADCS) was acquired under two operation conditions: normal and faulty states. The models were built and validated under these conditions and the results shows that the algorithm could successfully differentiate between these operations conditions. Furthermore, the algorithm provides competent information in prediction as well as adding more insight and physical interpretation to the ADCS operation. | ||||
| Keywords | ||||
| System Monitoring; Multivariate Analysis; PCA Algorithm; Space Operations | ||||
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