On adjusting a target specification data error predicted value so as to become larger on detecting maneuver of a target, the target specification data error predicted value is adjusted, in consideration of type of the maneuver and a course of the target, so as to make a direction of varying specification data large and to make a direction of constant specification data small. It is therefore possible to quickly recover a delay of the following of the varying specification data and to avoid increasing an error of the constant specification data.

 
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> Method for photographing on board of a flying rotating body and system for carrying out said method

> Method and a device for assisting the piloting of a rotary wing aircraft in the vicinity of a landing or takeoff point

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