Apparatus and method for multiple target engagement

• US 5,042,743 A
• Filed: 02/20/1990
• Issued: 08/27/1991
• Est. Priority Date: 02/20/1990
• Status: Expired due to Term

• Current Assignee: DRS Sustainment Systems, Inc (Leonardo S.p.A.)
• Original Assignee: Electronic Arts Incorporated
• Inventors: Edwin R. Carney
• Primary Examiner(s): Jordan, Charles T.
• Application Number:
  US07/482,152
• Time in Patent Office: 553 Days
• Field of Search: 244/3.11, 244/3.12, 244/3.14
• US Class Current: 244/3.11
• CPC Class Codes: F41G 7/2206 using a remote control station
• CPC Class Codes: F41G 7/2233 Multimissile systems
• CPC Class Codes: F41G 7/2253 Passive homing systems, i.e. comprising a receiver and do not requiring an active illumination of the target
• CPC Class Codes: F41G 7/2293 using electromagnetic waves other than radio waves
• CPC Class Codes: F41G 7/303 Sighting or tracking devices especially provided for simultaneous observation of the target and of the missile
• CPC Class Codes: F41G 7/308 for guiding a plurality of missiles
• CPC Class Codes: F41G 7/32 for wire-guided missiles

Abstract

Apparatus (10) for simultaneously engaging a multiplicity of selected targets (V1-V7) to launch one or more missiles (T) at each target and acquire, track, and guide each missile to its respective target. A field of view (FOV) is scanned to detect one or more targets therewithin. A target selection system (34) is used to designate various of the targets at which to launch missiles. A plurality of missiles are then launched, and directed to each selected target. A plurality of sensors (58) detect radiation from each missile as it travels toward its respective target. An acquisition and tracking system (74) is used to track each missile and its target. The system includes a processor (80) for determining the position of each missile relative to its respective target, and a control module (82) responsive to the processor for generating and transmitting guidance signals to each missile to guide it to its target.

Claims

1. Apparatus for simultaneously engaging a multiplicity of selected targets to launch one or more TOW missiles at each target and acquire, track, and guide each missile to its respective target, comprising,

means for scanning a field of view to detect one or more targets therewithin and for selecting various of the targets at which to launch missiles;

launch means for launching a plurality of missiles at least one of which is directed at each selected target;

sensing means for detecting radiation from each missile as the missiles travel toward their respective targets, radiation from each missile being in one of a plurality of regions within the light spectrum with a modulated radiation from each missile occurring in one of the regions during a launch phase of missile flight and unmodulated radiation occurring in the same or another region thereafter, and the sensing means including sensors for sensing radiation occurring in the various regions, one of the sensors being responsive to modulated radiation and another sensor being responsive to the unmodulated radiation; and

,

acquisition and tracking means responsive to the sensing means for tracking each missile, said acquisition and tracking means including means for "handing-off" the missile from the sensor for the one region to the sensor for the other regions, and processing means for determining the position of each missile relative to its respective target and guide means responsive to the processing means for generating and transmitting guidance signals to each missile to guide it to its target.

2. The apparatus of claim 1 wherein the missiles are launched sequentially and the first launched missile completes its launch phase prior to the last launched missile doing so, and the acquisition and tracking means includes means for tracking all the missiles using the sensor responsive to modulated radiation until the last of the missiles launched completes its launch phase, whereby all the missiles are tracked only using the one sensor, and for "handing-off" the missile only after all the missiles have completed their launch phase.

3. The apparatus of claim 2 wherein the sensing means includes a first sensor for sensing radiation in the visible and near infrared portion of the light spectrum, a second sensor for sensing modulated radiation in the near infrared portion of the spectrum, and a third sensor for sensing radiation in the far infrared portion of the spectrum, the acquisition and tracking means using the second sensor to track the missiles in their launch phase.

4. The apparatus of claim 3 wherein the first sensor comprises a video camera, the second sensor comprises a xenon beacon detector, and the third sensor comprises a forward looking infrared receiver (FLIR).

5. The apparatus of claim 4 further including means with which the user interacts to select targets within the field of view.

6. The apparatus of claim 2 wherein the acquisition and tracking means includes means for tracking each missile during its launch phase by offsetting the missile to one side of a line-of-sight for the field of view or the other thereby to distinguish the different tracks of the different missiles.

7. Apparatus for simultaneously engaging a multiplicity of selected targets to launch one or more TOW missiles at each target and acquire, track, and guide each missile to its respective target, comprising,

means for scanning a field of view to detect one or more targets therewithin and for selecting various of the targets at which to launch missiles, the scanning means including an optical display through which a user of the apparatus observes the field of view and locates targets therein, target selection means operable by the user to designate, or "tag", each target selected, means for generating a cursor visible on the display, the target selection means including user operable means for moving the cursor about the field of view from one potential target to another, user operable switch means for the user to "tag" a selected target prior to moving the cursor to the next potential target, means for defining an area within the field of view in which the selected target is enclosed, means for processing the image enclosed within the area to determine an aim point for the missile to be launched at the target, the aim point for each missile being presented on the display, and the target selection means further including means by which the user can select a different point on the target from the aim point which the missile is to hit, and means for determining an offset between the two points which is used in guiding the missile;

launch means for launching a plurality of missiles at least one of which is directed at each selected target;

sensing means for detecting radiation from each missile as the missiles travel toward their respective targets; and

,

acquisition and tracking means responsive to the sensing means for tracking each missile, said acquisition and tracking means including processing means for determining the position of each missile relative to its respective target and guide means responsive to the processing means for generating and transmitting guidance signals to each missile to guide it to its target.

8. Apparatus for simultaneously engaging a multiplicity of selected targets to launch one or more TOW missiles at each target and acquire, track, and guide each missile to its respective target, comprising,

means for scanning a field of view to detect one or more targets therewithin and for selecting various of the targets at which to launch missiles, the scanning means including an optical display through which a user of the apparatus observes the field of view and locates targets therein, and means for establishing a line-of-sight within the field of view and means by which the user can designate targets within the field of view at which missiles are to be launched;

launch means for launching a plurality of missiles at least one of which is directed at each selected target;

sensing means for detecting radiation from each missile as the missiles travel toward their respective targets; and

,

acquisition and tracking means responsive to the sensing means for tracking each missile, said acquisition and tracking means including processing means for controlling the line-of-sight whereby each selected target is maintained substantially equidistant from the line-of-sight for all selected targets to be continuously observable by the user for determining the position of each missile relative to its respective target, and guide means responsive to the processing means for generating and transmitting guidance signals to each missile to guide it to its target.

9. A method for simultaneously engaging a multiplicity of selected targets to launch one or more TOW missiles at each target and acquire, track, and guide each missile to its respective target, comprising:

scanning a field of view to detect one or more targets therewithin and selecting various of the targets at which to launch missiles;

sequentially launching a plurality of missiles at least one of which is directed at each selected target;

acquiring and tracking each missile as it travels toward its respective target, said acquiring and tracking including simultaneously detecting radiation from each missile and determining the position of each missile relative to its respective target based upon such detected radiation, and further including sensing a modulated radiation from each missile until the flight motor on the last to be launched missile shuts off; and

,

responding to the position of each missile relative to its target by generating and transmitting a signal to the missile to guide it to its target.

10. The method of claim 9 further including "handing-off" all the missiles by sensing unmodulated radiation from each missile after the last launched missile'"'"'s flight motor shuts off.

11. A method for simultaneously engaging a multiplicity of selected targets to launch one or more TOW missiles at each target and acquire, track, and guide each missile to its respective target, comprising:

scanning a field of view to detect one or more targets therewithin and selecting various of the targets at which to launch missiles, the scanning the field of view including observing it through an optical display, and selecting a target including presenting a cursor on the display, moving the cursor about the display from one potential target to another, activating a switch when the cursor is positioned over a potential target to designate that target as one at which a missile will be launched, determining an aim point for a missile whenever a target for the missile is selected, selection by the user including selection of an impact point different from the aim point;

launching a plurality of missiles at least one of which is directed at each selected target;

acquiring and tracking each missile as it travels toward its respective target, said acquiring and tracking including simultaneously detecting radiation from each missile and determining the position of each missile relative to its respective target based upon such detected radiation, and compensating the missile'"'"'s path to take into account any offset between the aim point and the user selected impact point; and

,

responding to the position of each missile relative to its target by generating and transmitting a signal to the missile to guide it to its target.

12. A method for simultaneously engaging a multiplicity of selected targets to launch one or more TOW missiles at each target and acquire, track, and guide each missile to its respective target, comprising:

scanning a field of view to detect one or more targets therewithin and selecting various of the targets at which to launch missiles;

establishing a line-of-sight within the field of view and thereafter automatically adjusting the line-of-sight to account for movement of the selected targets about the field of view whereby each selected target is maintained approximately equidistant from the line-of-sight so the user can observe all the selected targets at all times in the field of view;

launching a plurality of missiles at least one of which is directed at each selected target;

acquiring and tracking each missile as it travels toward its respective target, said acquiring and tracking including simultaneously detecting radiation from each missile and determining the position of each missile relative to its respective target based upon such detected radiation; and

,

responding to the position of each missile relative to its target by generating and transmitting a signal to the missile to guide it to its target.