The phrase "active observer" is correct and usable in written English.
It can be used in contexts where someone is engaged in observing a situation or phenomenon while also participating or interacting with it.
Example: "As an active observer in the discussion, she contributed her insights while also taking note of the group's dynamics."
Alternatives: "engaged observer" or "participatory observer".
I have, on a regular basis, participated in and been an active observer of the "complex peer review process".
Two great 13th-century scholars who influenced medicine were Roger Bacon, an active observer and tireless experimenter, and Albertus Magnus, a distinguished philosopher and scientific writer.
This paper proposes the application of an improved extended active observer (IEAOB) based teleoperation controller for both master and slave manipulators.
A force control method based on Hunt Crossley model is developed following the state feedback design technique with a Kalman filter based active observer (AOB).
This paper considers the problem of designing an active observer to plan a sequence of decisions regarding what target to look at, through a foveal-sensing action.
As an alternative approach, a new adaptive motion control approach for robotic manipulators extending the existing active observer for simultaneous inertial parameters and force estimation is proposed.
This gathering should include both the US and Serbian governments as active observers.
As the imaginary camera breaks, we awaken from the hallucinatory dream and are transformed into active observers forced to experience the horrifying reality of the massacre.
The algal blooming occurs during the summer months in Finland and the citizens appeared to be more active observers during the summer time.
The horizontal translation component of the optic flow was removed by assuming that the cyclopean line of sight of the active observers was always aligned with the centre on the planar surface, regardless of actual head position and surface slant [37].
In this paper we consider the task of purposefully controlling the motion of an active, monocular observer in order to recover a global description of a smooth, arbitrarily-shaped object.
