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The purpose of coasting is to enable the software to maintain target tracking across multiple poor detection areas where a single track may be lost or go out of view. Using data from the real track sightings the software attempts to predict the course of a track when the radar loses visibility of the target. In this situation the software will report predicted track sightings until the target has been re-acquired by the radar at which point it will report real sightings again. Coasting is an embedded process in Witness, and can be controlled using the settings in the Tracking Parameters. This allows different coasting settings in different areas, allowing for larger coast allowances in areas where line of sight is poor or detection is sub-optimal.

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Coasting tracks can be identified from normal tracks by their bright blue appearance. Coasted are tracks are not shown by default. To enable them use Highlight Coasting Tracks in the userĀ Tracks:

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User Details - see Tracks.

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Once enabled the tracks will display their costing status in real time on the PPI.

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