IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0251211
(2008-10-14)
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등록번호 |
US-7692576
(2010-05-20)
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발명자
/ 주소 |
- Mainds, Michael Gareth
- Gascoyne-Cecil, Andrew
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출원인 / 주소 |
- Curtiss-Wright Controls, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
2 |
초록
▼
A method is provided that facilitates generating a radar image to be displayed by a radar system. The method includes receiving range data and azimuth data carried by a radar signal transmitted from a radar antenna in communication with the radar system, wherein the range data and the azimuth data r
A method is provided that facilitates generating a radar image to be displayed by a radar system. The method includes receiving range data and azimuth data carried by a radar signal transmitted from a radar antenna in communication with the radar system, wherein the range data and the azimuth data represent the radar image as a plurality of azimuth segments that collectively form the radar image in a polar coordinate system. The range data and the azimuth data are translated into abscissa data and ordinate data that represent the radar image in a Cartesian coordinate system, and noise is filtered from the radar image, followed by generation of the radar image including the target to be displayed by a display screen to an operator.
대표청구항
▼
What is claimed is: 1. A method of generating a radar image to be displayed by a radar system, said method including: receiving range data and azimuth data carried by a radar signal transmitted from a radar antenna in communication with the radar system, wherein the range data and the azimuth data
What is claimed is: 1. A method of generating a radar image to be displayed by a radar system, said method including: receiving range data and azimuth data carried by a radar signal transmitted from a radar antenna in communication with the radar system, wherein the range data and the azimuth data represent the radar image as a plurality of azimuth segments that collectively form the radar image in a polar coordinate system; translating the range data and the azimuth data into abscissa data and ordinate data that represent the radar image in a Cartesian coordinate system; filtering noise from the radar image by: utilizing a return signal contribution reflected by a target from at least two immediately-adjacent azimuth segments to render a representation of the target in the radar image, selecting a highest pixel value from a plurality of different pixel values assigned to be displayed by a common pixel of a radar display to be displayed by the common pixel, or a combination of both utilizing the return signal contribution reflected by the target from the at least two immediately-adjacent azimuth segments and selecting the highest pixel value from the plurality of different pixel values assigned to the common pixel to render the representation of the target to be included as a portion of the radar image to be displayed; and generating the radar image including the target to be displayed by a display screen to an operator. 2. The method according to claim 1 further including converting the radar signal feed from an analog signal to a digital signal. 3. The method according to claim 2, wherein converting the radar signal to a digital signal is performed by an analog-to-digital converter provided to a graphics processing unit of the radar system independent of a central processing unit for controlling general operation of the radar system as a whole. 4. The method according to claim 1, wherein translating the range data and the azimuth data into abscissa data and ordinate data, filtering the noise from the radar image, or both translating the range data and the azimuth data into abscissa data and ordinate data, and filtering the noise from the radar image is performed by a graphics processing unit of the radar system independent of a central processing unit for controlling general operation of the radar system as a whole. 5. The method according to claim 1, wherein one of translating the range data and the azimuth data and filtering the noise from the radar image is performed by a graphics processing unit of the radar system independent of a central processing unit for controlling general operation of the radar system as a whole, and another of translating the range data and the azimuth data and filtering the noise from the radar image is performed by a different processing unit provided to the radar system. 6. The method according to claim 5, wherein the different processing unit is the central processing unit for controlling general operation of the radar system as a whole. 7. The method according to claim 1 further including transmitting the radar image over a communication network to be displayed by the display screen. 8. The method according to claim 1 further including storing range data and azimuth data representing the plurality of azimuth segments that collectively form the radar image as an array in a computer-readable memory. 9. The method according to claim 1 further including manipulating a point of view of the radar image to be displayed by the display screen in at least one of a first dimension and a second dimension responsive to receiving an input from the operator indicating a desired viewpoint of the radar image. 10. The method according to claim 9, wherein manipulating the point of view of the radar image further includes adjusting an orientation of the radar image in a third dimension. 11. The method according to claim 9, wherein manipulating the point of view of the radar image further includes conducting a geometric distortion to maintain substantially-overhead point of view of the radar image subsequent to manipulating the point of view. 12. The method according to claim 1 further including generating a plurality of different points of view of the radar image to be simultaneously displayed by the display screen. 13. The method according to claim 1 further including displaying the radar image over and underlay image representing a reference point of a target in the radar image. 14. The method according to claim 1, wherein the target is to be displayed as a graphical depiction of the target in real time by pixels of the display screen, the method further including gradually fading an intensity of the pixels displaying the target in the radar image to emulate a persistence of phosphor of a cathode-ray-tube display screen. 15. The method according to claim 14, wherein gradually fading the intensity of the target in the radar image is controlled by a graphics processing unit of the radar system independent of a central processing unit for controlling general operation of the radar system as a whole. 16. The method according to claim 1, wherein a plurality of the azimuth segments collectively forming the radar image overlap to each detect a target in a common region. 17. The method according to claim 16, wherein filtering noise from the radar image includes comparing a return signal contribution reflected from the common region for each overlapping azimuth segment, and generating the radar image to include the target within the common region if each return signal contribution is indicative of a presence of the target within the common region. 18. A physical computer-readable medium storing computer executable instructions for performing the method of claim 1. 19. A radar system including: a radar antenna for transmitting an outgoing signal and receiving a return signal contribution reflected by a target interrogated by said outgoing signal; an analog-to-digital converter for converting a radar feed signal transmitted from the radar antenna communicating the return signal contribution reflected by the target; a computer-readable memory for storing, at least temporarily, an array of range data and azimuth data carried by the radar feed signal, wherein the range data and the azimuth data represent the radar image as a plurality of azimuth segments that collectively form the radar image in a polar coordinate system; a radar scan converter for translating the range data and the azimuth data into abscissa data and ordinate data that represent the radar image in a Cartesian coordinate system; a filtering component for filtering noise from the radar image by: utilizing the return signal contribution reflected by the target from at least two immediately-adjacent azimuth segments to render a representation of the target in the radar image, selecting a highest pixel value from a plurality of different pixel values assigned to be displayed by a common pixel of a radar display to be displayed by the common pixel, or a combination of both utilizing the return signal contribution reflected by the target from the at least two immediately-adjacent azimuth segments and selecting the highest pixel value from the plurality of different pixel values assigned to the common pixel to render the representation of the target to be included as a portion of the radar image to be displayed; a graphics processing unit for generating the radar image including the target to be displayed; a display screen for displaying the radar image generated by the graphics processing unit to an operator; and a central processing unit for controlling interactions among radar system components. 20. The radar system according to claim 19, wherein the graphics processing unit includes a programmable pipeline and generates the radar image independent of the central processing unit. 21. The radar system according to claim 19, wherein the filtering component includes a physical computer-readable medium storing computer-executable logic to be executed for filtering noise from the radar image. 22. The radar system according to claim 21, wherein execution of the computer-executable logic performs a Gaussian convolution with the return signal contribution reflected by the target to minimize noise in the radar image. 23. The radar system according to claim 19, wherein the graphics processing unit includes one or more of: the computer-readable memory for storing, at least temporarily, an array of range data and azimuth data carried by the radar feed signal; the radar scan converter; and the filtering component.
이 특허에 인용된 특허 (2)
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Liu Guang-Sheen,TWX, Radar scan converter and method of mixing image.
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Tol John M. (Sudbury MA) Matt Anthony F. (West Newton MA), Raster display system.
이 특허를 인용한 특허 (1)
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Romaszewicz, Marcin; Varadhan, Gokul; Praun, Emil, Rendering spherical space primitives in a cartesian coordinate system.
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