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In this paper, we study the problem of optimal trajectory generation for a team of mobile robots tracking a moving target using distance and bearing measurements. Contrary to previous approaches, we explicitly consider limits on the robots' speed and impose constraints on the minimum distance at which the robots are allowed to approach the target. We first address the case of a single sensor and show...
In target positioning and tracking, most sensors provide measurements either as range or bearing or both. The measurements are used to update an a priori estimate either via a linearized least squares method or an extended Kalman filter. In either case, the resulting solution has two components, one is related to the measurement prediction errors and the other is an observation matrix obtained from...
Instantaneous frequency and time-delay measured accurately are important technologies for high precise underwater positioning. In order to prevent the leakage interference from other frequency channels, variability of instantaneous frequency sequence (VIFS) calculation and frequency estimations were adopted. The synchronous positioning model (spherical) combined with asynchronously model (hyperbolical)...
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