Real time air-to-ground reconnaissance by means of a remotely piloted vehicle (RPV) requires the observer to detect and to identify military objects in rastered imagery of terrain scenes under time constraint. Accordingly, his performance depends on parameters of the scene, of the RPV-system, and of his visual information processing. In this paper, an investigation of observer's performance as a function of several system parameters (flight altitude, speed, line of sight of the sensor, frame rate) is reported.
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