4D GIS based virtual reality for moving target prediction
First Claim
1. A method of 4D GIS based virtual reality for moving target prediction, comprising the steps of:
- (a) recognizing a predetermined terrain and a plurality of predetermined targets;
(b) positioning and tracking said targets;
(c) estimating and reasoning a predetermined destination; and
(d) predicting movement route and traiectory of said moving target,wherein said step (a) further comprises steps of;
(a1) obtaining terrain and moving target image from a Moving Target Indication (MTI) sensor or an Unmanned Aerial Vehicle (UAV) camera;
(a2) extracting moving targets by subtraction from a sequence of measurements from said MTI sensor or said Unmanned Aerial Vehicle (UAV) camera;
(a3) recognizing said moving target using pattern recognition;
(a4) classifying terrain background through a statistical model based image classifier; and
(a5) registering said classified terrain with a digital map from GIS through matching recognized culture (man-made) objects and natural objects.
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Abstract
The technology of the 4D-GIS system deploys a GIS-based algorithm used to determine the location of a moving target through registering the terrain image obtained from a Moving Target Indication (MTI) sensor or small Unmanned Aerial Vehicle (UAV) camera with the digital map from GIS. For motion prediction the target state is estimated using an Extended Kalman Filter (EKF). In order to enhance the prediction of the moving target'"'"'s trajectory a fuzzy logic reasoning algorithm is used to estimate the destination of a moving target through synthesizing data from GIS, target statistics, tactics and other past experience derived information, such as, likely moving direction of targets in correlation with the nature of the terrain and surmised mission.
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Citations
13 Claims
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1. A method of 4D GIS based virtual reality for moving target prediction, comprising the steps of:
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(a) recognizing a predetermined terrain and a plurality of predetermined targets; (b) positioning and tracking said targets; (c) estimating and reasoning a predetermined destination; and (d) predicting movement route and traiectory of said moving target, wherein said step (a) further comprises steps of; (a1) obtaining terrain and moving target image from a Moving Target Indication (MTI) sensor or an Unmanned Aerial Vehicle (UAV) camera; (a2) extracting moving targets by subtraction from a sequence of measurements from said MTI sensor or said Unmanned Aerial Vehicle (UAV) camera; (a3) recognizing said moving target using pattern recognition; (a4) classifying terrain background through a statistical model based image classifier; and (a5) registering said classified terrain with a digital map from GIS through matching recognized culture (man-made) objects and natural objects. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification