Method and system for scanning of a focal plane array during earth observation imaging
AssigneeDRS Network & Imaging Systems, LLC
InventorsPhilip Ely, Mark Muzilla
Life of this patent
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Abstract
An imaging system includes a body, a stage coupled to the body, and an actuator coupled to the body and the stage. The actuator is configured to move the stage in one or more directions relative to the body. The imaging system also includes a focal plane array including one or more detectors and coupled to the stage and a controller coupled to the actuator. The controller is configured to determine a velocity of the body and to cause the actuator to backscan the stage in the one or more directions at a drive velocity corresponding to the velocity of the body. Moreover, the controller is communicatively coupled to the one or more detectors and causes the one or more detectors to capture image data during the backscan.
Claims18
An imaging system, comprising:
- a body;
- a stage coupled to the body;
- an actuator coupled to the body and the stage, wherein the actuator is configured to move the stage in a direction relative to the body;
- a focal plane array that comprises one or more detectors and coupled to the stage;
- and
- a controller coupled to the actuator, wherein the controller is configured to determine a velocity of the body, wherein the controller is configured to cause the actuator to backscan the stage from an initial position in the direction at a drive velocity corresponding to the velocity of the body, wherein backscanning the stage comprises determining one or more gain coefficients and updating the drive velocity in response to the one or more gain coefficients, and wherein the controller is communicatively coupled to the one or more detectors and causes the one or more detectors to capture image data during the backscan, and the controller is configured to reset the stage to the initial position.
A method comprising:
- providing a body;
- providing an actuator coupled to the body;
- providing a stage coupled to the actuator;
- providing an image sensor coupled to the stage;
- determining a body velocity corresponding to motion of the body;
- determining a drive velocity associated with the body velocity;
- backscanning, using the actuator, the stage at the drive velocity relative to the body velocity, wherein the backscanning comprises:
- determining one or more gain coefficients;
- and
- updating the drive velocity in response to the one or more gain coefficients;
- capturing, by the image sensor, one or more frames during backscanning of the stage;
- and
- resetting, using the actuator, the stage to an initial position.
A method comprising:
- sending a control signal to an actuator to start a backscan of a stage at a drive velocity, wherein the stage is connected to the actuator;
- reading a body velocity;
- updating the drive velocity of the stage in response to the body velocity, wherein updating the drive velocity further comprises:
- determining one or more gain coefficients;
- and
- updating the drive velocity in response to the one or more gain coefficients;
- determining a position of the stage;
- determining that the stage has reached a cutoff amplitude;
- and
- thereafter, sending a second control signal to reset the stage to an initial position.
Dependencies are inferred from the claim text.