Non-cooperative identification of civil aircraft using a generalised mutual subspace method

López Rodríguez, P., Escot Bocanegra, D., Fernández Recio, R., Bravo, I. 2016. Non-cooperative identification of civil aircraft using a generalised mutual subspace method. The Institution of Engineering and Technology Radar Sonar and Navigation 10, 1, 186-191, https://doi.org/10.1049/iet-rsn.2015.0145

The subspace‐based methods are effectively applied to classify sets of feature vectors by modelling them as subspaces. However, their application to the field of non‐cooperative target identification of flying aircraft is barely seen in the literature. In these methods, setting the subspace dimensionality is always an issue. Here, it is demonstrated that a modified mutual subspace method, which uses softweights to set the importance of each subspace basis, is a promising classifier for identifying sets of range profiles coming from real in‐flight targets with no need to set the subspace dimensionality in advance. The assembly of a recognition database is also a challenging task. In this study, this database comprises predicted range profiles coming from electromagnetic simulations. Even though the predicted and actual profiles differ, the high recognition rates achieved reveal that the algorithm might be a good candidate for its application in an operational target recognition system.

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