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Theses

Trajectographie Passive sans manœuvre de l’observateur

Abstract : The conventional bearings-only target motion analysis methods assume that the source is in constant velocity motion (constant speed and heading) while the observer maneuvers. In this thesis, we reassess this hypothesis and propose another model of the kinematics of the source: the constant turn motion (an arc of circle followed at constant speed). We prove that this kind of trajectory is observable by an observer in constant velocity motion. Then, we study the contribution of the addition of frequency measurements or the feasibility of target motion analysis methods that use range only measurements. The case of a source in constant velocity motion with a maneuvering observer is examined for this last type of measurements. Each case leads to an analysis of the observability of the trajectory of the source and to the development of the associated maximum likelihood estimator. We show that this estimator often appears to be efficient.
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Julien Clavard. Trajectographie Passive sans manœuvre de l’observateur. Autre. Université de Toulon, 2012. Français. ⟨NNT : 2012TOUL0015⟩. ⟨tel-00836044⟩

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