Method and device for tracking an object
AssigneesBentech Subsea A/S, Forsvarets Forskningsinstitutt
InventorsTor Knudsen, Arne Lovik
Life of this patent
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Abstract
In a method and a device for tracking an object (2a), especially a subsea object, while utilizing a mother vessel (1) or an intermediate craft (101) equipped with sonars (3a) for the transmission and reflection of searching rays (3b, 3n) which on a display on the vessel (1) indicate one or more objects (2a) in the subsea search area, there is provided a searching unit (2) which is controlled from the vessel (1), and which comprises at least one transponder/responder (10, 13) or the like, for the transmission of signals corresponding to the searching rays (3b). The signal(s) is registered on the display on the mother vessel (1) and is used for guiding the searching unit (2) towards a selected object (2a) along the searching rays (3b, 3n) of the sonars.
Claims28
A method for tracking and neutralizing an object, especially a subsea object, there being used a mother vessel or an intermediate craft equipped with sonars for transmission and reflection of searching rays which on a display on the vessel indicate one or more objects in the subsea searching field, said method comprising the steps of:
- using a searching unit which is controlled from the vessel or the craft, and which comprises at least one transponder/responder for the transmission of signals which are designed so as to be distinguished from other echoes on the display, but still corresponding to the searching ray;
- registering said signals on the display on the mother vessel;
- and
- utilizing said signals for controlling the searching unit towards said object along the searching rays of the sonar.
Apparatus for tracking and neutralizing an object, especially a subsea object, said apparatus being adapted to a mother vessel or an intermediate craft equipped with sonars for transmission and reflection of searching rays which on a display on the vessel indicate one or more objects in the subsea searching field, said apparatus comprising a searching unit which is controlled from one of the vessel and the craft, and which comprises:
- at least one transponder/responder for the transmission of signals which are designed so as to be distinguished from other echoes on the display, but still corresponding to the searching rays;
- and
- means for processing indications on the display in relation to a selected object, said relation being utilized for remote control of the searching unit towards the selected object along the searching ray of the sonar.
Dependencies are inferred from the claim text.