Abstract
This research is concerned with coordinated standoff tracking, and a guidance law against a moving target is proposed by using differential geometry. We first present the geometry between the unmanned aircraft (UA) and the target to obtain the convergent solution of standoff tracking when the speed ratio of the UA to the target is larger than one. Then, the convergent solution is used to guide the UA onto the standoff tracking geometry. We propose an improved guidance law by adding a derivative term to the relevant algorithm. To keep the phase angle difference of multiple UAs, we add a second derivative term to the relevant control law. Simulations are done to demonstrate the feasibility and performance of the proposed approach. The proposed algorithm can achieve coordinated control of multiple UAs with its simplicity and stability in terms of the standoff distance and phase angle difference.
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Project supported by the National Natural Science Foundation of China (Nos. 61273327 and 71201076), the Key Pre-research Fund of the PLA General Armament Department (No. 9140A06050213BQX), and the Natural Science Foundation of Jiangsu Province, China (No. BK2011564)
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Song, Zq., Li, Hx., Chen, Cl. et al. Coordinated standoff tracking of moving targets using differential geometry. J. Zhejiang Univ. - Sci. C 15, 284–292 (2014). https://doi.org/10.1631/jzus.C1300287
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DOI: https://doi.org/10.1631/jzus.C1300287