Object detection and location system
First Claim
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1. An apparatus comprising:
- a platform;
an object detector associated with the platform and configured to detect a number of objects;
a distance measurement system associated with the platform and configured to measure a number of distances to the number of objects detected by the object detector;
a location system associated with the platform and configured to identify a location of the platform;
an orientation identification system associated with the platform and configured to identify an orientation of the distance measurement system; and
a controller associated with the platform and configured to identify a number of geographic locations for the number of objects using the number of distances, the location of the platform, and the orientation of the distance measurement system,wherein the controller is configured to identify a center for each object in the number of objects to form a number of centers and direct the distance measurement system to measure the number of distances to the number of centers for the number of objects,wherein the geographic location for each object is identified based on the controller measuringan elevation angle measured with respect to a line of sight between the location of the platform and each object and a first plane formed by a first axis defined through the location of the platform and the center of the earth, and a second axis orthogonal to the first axis and being parallel to a line of latitude, andan azimuth angle measured with respect to the line of sight between the location of the platform and a second plane formed by the first axis and a third axis orthogonal to the first axis and being parallel to a line of longitude.
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Abstract
A method and apparatus for detecting objects. An object detector associated with a platform and configured to detect a number of objects is used to monitor for the number of objects. In response to detecting the number of objects, a number of distances to the number of objects detected by the object detector are measured using a distance measurement system. A number of geographic locations for the number of objects is identified using the number of distances, a location of the platform, and an orientation of the distance measurement system.
45 Citations
19 Claims
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1. An apparatus comprising:
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a platform; an object detector associated with the platform and configured to detect a number of objects; a distance measurement system associated with the platform and configured to measure a number of distances to the number of objects detected by the object detector; a location system associated with the platform and configured to identify a location of the platform; an orientation identification system associated with the platform and configured to identify an orientation of the distance measurement system; and a controller associated with the platform and configured to identify a number of geographic locations for the number of objects using the number of distances, the location of the platform, and the orientation of the distance measurement system, wherein the controller is configured to identify a center for each object in the number of objects to form a number of centers and direct the distance measurement system to measure the number of distances to the number of centers for the number of objects, wherein the geographic location for each object is identified based on the controller measuring an elevation angle measured with respect to a line of sight between the location of the platform and each object and a first plane formed by a first axis defined through the location of the platform and the center of the earth, and a second axis orthogonal to the first axis and being parallel to a line of latitude, and an azimuth angle measured with respect to the line of sight between the location of the platform and a second plane formed by the first axis and a third axis orthogonal to the first axis and being parallel to a line of longitude. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for detecting objects, the method comprising:
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monitoring for a number of objects using an object detector associated with a platform and configured to detect the number of objects; responsive to detecting the number of objects, measuring a number of distances to the number of objects detected by the object detector using a distance measurement system; identifying a number of geographic locations for the number of objects using the number of distances, a location of the platform, and an orientation of the distance measurement system, wherein the geographic location for each object is identified based on measuring an elevation angle measured with respect to a line of sight between the location of the platform and each object and a first plane formed by a first axis defined through the location of the platform and the center of the earth, and a second axis orthogonal to the first axis and being parallel to a line of latitude, and an azimuth angle measured with respect to the line of sight between the location of the platform and a second plane formed by the first axis and a third axis orthogonal to the first axis and being parallel to a line of longitude; and identifying a number of speeds for the number of objects and a number of trajectories for the number of objects. - View Dependent Claims (17, 18, 19)
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Specification