Introduction
Timeshare mode causes all cameras within the group to spread themselves between tracks, spending an adjustable amount of time on each, before moving to the next tracked object.
This adjustable time period is called the Follow Time, and can be configured in the Timeshare Group settings. There is a Min. Follow Time and a Max. Follow Time.
Below are a series of examples of how cameras assigned to the Timeshare mode, or in a Timeshare Group, can monitor Tracks.
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Timeshare mode is especially useful for ??? situations.
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Contents
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Timeshare Group Settings
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Group Type: The type of camera group; in this case Timeshare camera group.
User ID: A user friendly ID.
Name: The name allocated to the camera group.
Enabled: The option to enable this group, which is selected by default.
Use Priority: This controls which targets are selected to be followed, and some examples are shown in the Priority section: https://navtechradar.atlassian.net/wiki/spaces/TUN/pages/501579784/Timeshare#Priority.
Target Expiry Time: This specifies how long a target will be kept alive whilst the system waits for an update.
Min Follow Time: The minimum length of time spent following targets before looking for another suitable target to follow.
Max Follow Time: The maximum length of time spent following targets before looking for another suitable target to follow.
Classification: Select what type of targets should be followed. By default this is set to all classification models.
Priority: Select the priority level to restrict all cameras in the Timeshare Group to only follow targets of the selected priority or higher. Any targets of a lower priority will be ignored. By default this is set to High.
Camera Coast: Select this option if you want the camera to continue to follow in the target’s last known direction when it is no longer being tracked.
Coasts Allowed: How many times the camera should follow a coasted track before giving up.
Minimum Sightings: The minimum number of sightings a target should have before it is followed by a camera.
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Priority is set as part of the alarm configuration. Please refer to https://navtechradar.atlassian.net/wiki/spaces/TUN/pages/307232849/General#Alarm-Settings for ClearWay™ and Rules for AdvanceGuard® alarm configuration. |
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Default
Single Camera:
Each
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track is viewed for the Follow Time, before the
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camera switches to the next Track. e.g. 10 seconds.
The
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tracks are viewed in order of their age: from oldest to youngest, and then cyclically.
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Age is defined by how long the
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tracks have been inside the Detection Area.
As
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tracks move in and out of the Detection Area, the age and therefore the order of
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track viewings will change.
The
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camera's views are labelled numerically in order of viewing.
If a
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track leaves the Detection Area, and then rejoins the Detection Area, its age will be refreshed.
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Double Cameras:
Each
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track is viewed for the Follow Time, before the camera switches to the next
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track. e.g. 10 seconds.
The
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tracks are viewed in order of their age: from oldest to youngest, and then cyclically.
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Age is defined by how long the
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tracks have been inside the Detection Area.
As
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tracks move in and out of the Detection Area, the age and therefore the order of
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track viewings will change.
The
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cameras' views are labelled numerically in order of viewing e.g. 1 for 10 seconds, 2 for 10 seconds, 3 for 10 seconds, 1 for 10 seconds etc.
As each
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camera is in a separate group, they will both perform the same actions, regardless of different
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camera positions.
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Double Cameras, Single Group
Each
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track is viewed for the Follow Time, before the
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camera switches to the next
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track. e.g. 10 seconds.
The
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tracks are viewed in order of their age: from oldest to youngest, and then cyclically.
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Age is defined by how long the
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tracks have been inside the Detection Area.
The Cameras' views are labelled numerically in order of tracking.
As both
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cameras are in the same group, they will not view the same
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track simultaneously. Instead, each
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camera will view
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tracks in order of age and
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track availability:
Camera 1 views the oldest
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track (green),
So Camera 2 views the second oldest (aqua).
When the Follow Time ends, Camera 1 will switch to viewing the next oldest
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track: the third oldest (blue).
So Camera 2 will switch to the fourth oldest (indigo).
This 'alternate
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track' cycle will continue unless a
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track or
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tracks move in or out of the Detection Area.
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Priority
Double Cameras, Single Group
Each
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track is viewed for the Follow Time, before the
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camera switches to the next
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track. e.g. 10 seconds.
When a Detection Area is given Priority, only
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tracks within the Priority Area (red) will be viewed.
The
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tracks are viewed in order of their age: from oldest to youngest, and then cyclically.
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Age is defined by how long the
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tracks have been inside the Priority Detection Area.
The
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cameras' views are labelled numerically in order of track viewing.
As both
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cameras are in the same group, they will not view the same
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track simultaneously. Instead, each
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camera will view in order of age and
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track availability.
In this example, there are three
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tracks to be tracked by two
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cameras, so the
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tracks cannot be evenly distributed between the two
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cameras. Therefore:
Camera 1 tracks the oldest
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track (green), so Camera 2 views the second oldest (blue).
When the Follow Time ends, Camera 1 will switch to viewing the second oldest
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track (blue), so Camera 2 will switch to the third oldest (indigo).
When the Follow Time ends, Camera 1 will switch to viewing the third oldest
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track (indigo), so Camera 2 will switch back to the oldest (green).
This 'every two
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tracks' cycle will continue unless a
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track or
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tracks move in or out of the Detection Area.
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Mixed Camera Modes
Mixed
As above, the Timeshare
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camera views each
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track for a defined amount of time, before the
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camera switches to the next
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track. e.g. 10 seconds.
The
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tracks are viewed in order of their age: from oldest to youngest, and then cyclically.
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Age is defined by how long the
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tracks have been inside the Detection Area.
The Timeshare
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camera's views are labelled numerically in order of track viewing.
However, whilst the youngest
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track (purple) is the last to be viewed by the Timeshare
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camera, it is continuously viewed by the Closest camera due its proximity.
You cannot put two
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cameras with different modes in the same group.
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Mixed Priority
As above, the Timeshare
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camera views each
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track for a defined amount of time, before the
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camera switches to the next
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track. e.g. 10 seconds.
When a Detection Area is given Priority, only
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tracks within the Priority Area (red) will be viewed.
The
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tracks are viewed in order of their age: from oldest to youngest, and then cyclically.
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Age is defined by how long the
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tracks have been inside the Priority Detection Area.
The Timeshare
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camera's views are labelled numerically in order of track viewing.
However, whilst the youngest
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track in the Priority Detection Area (indigo) is the last to be viewed by the Timeshare camera, it is continuously viewed by the Closest camera due its proximity.
You cannot put two
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camera's with different modes in the same group.
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Related
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Information
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