2007 **Abstract:** From matters of survival like chasing prey, to games like football, the problem of intercepting a target that moves in the horizontal plane is ubiquitous in human and animal locomotion. Recent data show that walking humans turn onto a straight path that leads a moving target by a constant angle, with some transients in the target-heading angle. We test four control strategies against the human data: (1) pursuit, or nulling the target-heading angle beta, (2) computing the required interception angle beta (3) co…

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“…Without some modification, both Fajen and Warren's dynamical model and the STARS model would follow a pursuit strategy exclusively. Fajen and Warren have recently described modifications to the FW model which allow it to implement an interception strategy while approaching moving goals (Fajen & Warren, 2007). Switching to an interception strategy would require our model to identify that the goal is moving independently in the environment.…”

confidence: 99%

“…Without some modification, both Fajen and Warren's dynamical model and the STARS model would follow a pursuit strategy exclusively. Fajen and Warren have recently described modifications to the FW model which allow it to implement an interception strategy while approaching moving goals (Fajen & Warren, 2007). Switching to an interception strategy would require our model to identify that the goal is moving independently in the environment.…”

confidence: 99%

“…[13]), the target-heading angle will be greater than zero after the initial steps onto the pursuit path, the change in the target-heading angle with respect to time will be close to zero (i.e., d /dt 0), and when there is a mid-pursuit change of the ball carrier, the change in the target-heading angle after the change will also be equal to zero (i.e., d /dt ~ 0), even though the targetheading angle may change after the mid-pursuit change of the ball carrier.…”

confidence: 99%

“…First, boaters and airplane pilots are taught that if another craft maintains a constant bearing angle relative to them as the distance between them diminishes, and there is no change in course or speed over time, they are on a collision course and evasive action is called for [12]. Maintaining the target's bearing direction here requires that there is a visible external reference frame such as a distant landmark [13]. Behavioral evidence that supports this comes from dragonflies intercepting prey overhead by maintaining a constant angle between the target and horizon [14].…”

confidence: 99%