Searching for a mobile intruder in a polygonal region
SIAM Journal on Computing
Robot Motion Planning and Control
Robot Motion Planning and Control
Robot Motion Planning
The 4th International Symposium on Experimental Robotics IV
Visibility-Based Pursuit-Evasion in a Polygonal Environment
WADS '97 Proceedings of the 5th International Workshop on Algorithms and Data Structures
Surveillance Strategies for a Pursuer with Finite Sensor Range
International Journal of Robotics Research
Efficient Multi-robot Search for a Moving Target
International Journal of Robotics Research
International Journal of Robotics Research
Randomized pursuit-evasion in a polygonal environment
IEEE Transactions on Robotics
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In this paper we consider the surveillance problem of tracking a moving evader by a nonholonomic mobile pursuer. We deal specifically with the situation in which the only constraint on the evader's velocity is a bound on speed (i.e., the evader is able to move omnidirectionally), and the pursuer is a nonholonomic, differential drive system having bounded speed.We formulate our problem as a game. Given the evader's maximum speed, we determine a lower bound for the required pursuer speed to track the evader. This bound allows us to determine at the beginning of the game whether or not the pursuer can follow the evader based on the initial system configuration. We then develop the system model, and obtain optimal motion strategies for both players, which allow us to establish the long term solution for the game. We present an implementation of the system model, and motion strategies, and also present simulation results of the pursuit-evasion game.