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Method for Reducing The Low-frequency Component of The Measurement Noise of A Photosensitive Imager and Applications of Same
| Content Provider | The Lens |
|---|---|
| Abstract | A method for reducing the low-frequency component of the measurement noise of a photosensitive imager and applications of same. The invention involves intentionally creating a non-straight scanning movement of the observed scene on the photosensitive matrix of the imager. |
| Related Links | https://www.lens.org/lens/patent/012-572-190-498-478/frontpage |
| Language | English |
| Publisher Date | 2017-07-27 |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Patent |
| Jurisdiction | United States of America |
| Date Applied | 2015-07-15 |
| Applicant | Mbda France |
| Application No. | 201515327784 |
| Claim | 1 - 11 . (canceled) A method for reducing the low-frequency component of the measurement noise of a photosensitive imager, comprising: generating a non-straight scrolling movement of a scene observed by a matrix of photosensitive pixels of a photosensitive imager, wherein the photosensitive imager operates in a time-rated manner at a frequency “1/T”; wherein an amplitude of said scrolling movement is at least equal to 5 pixels, and wherein a speed “v” of said scrolling movement complies with the following relation: in which “α” is a size of said pixels of said matrix and “t” is an integration time of images by said imager. The method according to claim 12 , wherein the amplitude of said scrolling movement is at least equal to 10 pixels. The method according to claim 12 , wherein the scrolling movement forms a loop. The method according to claim 14 , wherein the loop is approximately circular. The method according to claim 12 , wherein said scrolling movement is obtained by controlling an orientation of a line of sight of said imager. The method according to claim 16 , wherein said line of sight is fixed relative to said imager, and said imager is mounted in a mobile manner. The method according to claim 16 , further comprising: observing the scene via the matrix of photosensitive pixels of the photosensitive imager through an optical device implemented with the imager, wherein said imager is fixed and wherein said line of sight is rendered movable by means of said optical device. A device, comprising: a photosensitive imager comprising a matrix of photosensitive pixels; and an optical device configured to controlling an orientation of a line of sight of said matrix of photosensitive pixels in observing a scene; wherein the imager operates in a time-rated manner at a frequency 1/T; and wherein the optical device creates a non-straight scrolling movement of said scene on said matrix of photosensitive pixels, an amplitude of said scrolling movement being at least equal to 5 pixels and a speed “v” of said scrolling movement complying with the following relation: A system for a final phase guidance of a missile towards a target, comprising: a homing device comprising: a photosensitive imager operating in a time-rated manner at a frequency 1/T and comprising a matrix of photosensitive pixels observing a scene; and an optical device configured to control an orientation of a line of sight of said imager in order to find a target in said scene; wherein said optical device creates a non-straight scrolling movement of said scene on said matrix, an amplitude of said scrolling movement being at least equal to 5 pixels and a speed “v” of said scrolling movement complying with the following relation: The system according to claim 20 , wherein scrolling movement forms a circular loop. The system according to claim 20 , further comprising: a missile comprising the homing device, wherein the missile is configured to use the homing device for a final phase guidance. |
| CPC Classification | PICTORIAL COMMUNICATION; e.g. TELEVISION Weapon Sights;Aiming |
| Extended Family | 086-860-383-152-634 118-341-010-317-971 041-820-866-549-792 089-135-557-354-816 012-572-190-498-478 103-740-197-656-992 |
| Patent ID | 20170214865 |
| Inventor/Author | De Picciotto François |
| IPC | H04N25/48 F41G7/22 |
| Status | Active |
| Owner | Mbda France |
| Simple Family | 086-860-383-152-634 118-341-010-317-971 041-820-866-549-792 089-135-557-354-816 012-572-190-498-478 103-740-197-656-992 |
| CPC (with Group) | H04N25/48 F41G7/2253 F41G7/2293 |
| Issuing Authority | United States Patent and Trademark Office (USPTO) |
| Kind | Patent Application Publication |
