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US 7,548,194 B2Granted
Hostile intention assessment system and method
AssigneeRaytheon Company
InventorThomas E. Wood
Life of this patent
Estimating the term…
Abstract
A hostile intention assessment system and method wherein a tracking sensor subsystem (e.g., radar) tracks targets relative to a critical asset. Determinations are made to assess if a first target is approaching a second target, and to assess if the second target is approaching the critical asset. If the first target is approaching the second target to hide in the radar shadow thereof and the second target is approaching sufficiently close to the critical asset, an alert is generated.
Claims54
A hostile intention assessment system comprising:
- a tracking sensor subsystem for tracking targets relative to a critical asset;
- a processing subsystem responsive to the tracking sensor subsystem, programmed to:
- determine if a first target is approaching a second target,
- determine if the second target is approaching the critical asset, and
- if the first target is approaching the second target and the second target is approaching the critical asset, generating a first alert.
2 more elements
A hostile intention assessment system comprising:
- a processing subsystem configured to:
- compute the closest point of approach and the time to the closest point of approach of a first target relative to a second target,
- compute the closest point of approach and the time to the closest point of approach of the second target relative to a critical asset,
- determine the size of the first target relative to the second target, and
- generate a first alert when the computed closest point of approach of the second target relative to the critical asset is below a predetermined threshold, the size of the first target is small relative to the size of the second target, and the computed closest point of approach and time to the closest point of approach of the first target relative to the second target are below predetermined thresholds for a predetermined duration.
2 more elements
A hostile intention assessment system comprising:
- a radar subsystem for tracking targets relative to a critical asset;
- and
- a processing subsystem responsive to the radar subsystem and programmed to:
- determine if a smaller craft is approaching a larger vessel,
- determine if the larger vessel is approaching the critical asset, and
- generate a first alert in response.
3 more elements
A hostile intention assessment method comprising:
- tracking targets relative to a critical asset;
- determining if a first target is approaching a second target;
- determining if a second target is approaching the critical asset;
- and
- generating a first alert when the first target is approaching the second target and the second target is approaching the critical asset.
2 more elements
A hostile intention assessment method comprising:
- tracking targets relative to a critical asset;
- determining if a smaller craft is approaching a larger vessel;
- determining if the larger vessel is approaching the critical asset;
- and
- generating a first alert in response.
2 more elements
A hostile intention assessment method comprising:
- computing the closest point of approach and the time to the closest point of approach of a first target relative to a second target;
- computing the closest point of approach and the time to the closest point of approach of the second target relative to a critical asset;
- determining the size of the first target relative to the second target;
- and
- generating a first alert when the computed closest point of approach of the second target relative to the critical asset is below a predetermined threshold, the size of the first target is small relative to the size of the second target by a selected amount, and the computed closest point of approach and time to the closest point of approach of the first target relative to the second target are below predetermined thresholds for a predetermined duration.
2 more elements
A hostile intention assessment system comprising:
- a radar subsystem for tracking targets relative to a critical asset;
- and
- a processing subsystem responsive to the radar subsystem and programmed to:
- determine if a smaller craft is approaching a larger vessel,
- determine if the larger vessel is approaching the critical asset, and
- associate the track of the smaller craft with the track of the larger vessel when the smaller craft is hidden in the radar shadow of the larger vessel.
3 more elements
A hostile intention assessment system comprising:
- a processing subsystem configured to:
- compute the approach a first target relative to a second target,
- compute the approach of the second target relative to a critical asset,
- determine the size of the first target relative to the second target,
- determine relationship of both the first and second targets relative to the critical asset, and
- generate an alert when the computed approach of the second target relative to the critical asset meets a predetermined threshold, the size of the first target is small relative to the size of the second target, the computed approach of the first target relative to the second target meets a predetermined threshold for a predetermined duration, and the smaller target is further from the critical asset than the larger target.
3 more elements
Dependencies are inferred from the claim text.