Systems and methods for space-time radar imaging
First Claim
1. A system for imaging an object moving in torque-free motion, the system comprising:
- a receiver configured to acquire radar data reflected by an object moving in torque-free motion;
a memory configured to store instructions for processing the acquired radar data; and
a processor configured to determine a motion state of the moving object and generate a three-dimensional representation of the moving object, based on the determined motion state.
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Abstract
A method of imaging a moving object, including the steps of acquiring radar data reflected by the moving object, determining a motion state of the moving object; and generating a three-dimensional representation of the moving object based on the determined motion state, is disclosed. The motion state may be a complete solution of translational and rotational motion determined based on at least one of the inertia tensor components of the moving object, or solutions of Euler'"'"'s torque-free equations of motions. The three-dimensional representation may be generated by reconstructing static patterns of the moving object based on estimated initial translational and rotational conditions of the object. A system for imaging the moving object according to this method is also disclosed.
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Citations
26 Claims
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1. A system for imaging an object moving in torque-free motion, the system comprising:
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a receiver configured to acquire radar data reflected by an object moving in torque-free motion; a memory configured to store instructions for processing the acquired radar data; and a processor configured to determine a motion state of the moving object and generate a three-dimensional representation of the moving object, based on the determined motion state. - View Dependent Claims (2, 3, 4, 5)
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6. A computer-implemented method of imaging an object moving in torque-free motion, the method comprising the steps of:
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acquiring radar data reflected by the moving object; defining an intensity of the radar data as a function of generalized coordinates of motion; defining estimated initial conditions for the generalized coordinates of motion; integrating the intensity of the defined radar data across at least a portion of the moving object; redefining the estimated initial conditions until the integrated intensity of the radar data has been optimized; and generating a three-dimensional representation of the moving object by reconstructing static patterns of the moving object as a function of the estimated initial conditions that optimize the integrated intensity of the radar data. - View Dependent Claims (7, 8, 9)
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10. A computer-implemented method of imaging an object moving in torque-free motion, the method comprising:
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acquiring radar data reflected by the moving object; determining a complete motion state of the moving object; and generating a three-dimensional representation of the moving object based on the determined complete motion state, by associating radar pulse times with orientation estimates of the moving object. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A computer-readable medium that stores a set of executable instructions, which when read by a processor perform steps in a method of imaging an object moving in torque-free motion, the steps comprising:
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acquiring radar data reflected by the moving object; determining a motion state of the moving object; and generating a three-dimensional representation of the moving object based on the determined motion state. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A computer-implemented method of imaging an object moving in torque-free motion, the method comprising the steps of:
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acquiring radar data reflected by the moving object; defining a metric of the radar data as a function of generalized coordinates of motion; defining estimated initial conditions for the generalized coordinates of motion; integrating the metric of the radar data across at least a portion of the moving object; redefining the estimated initial conditions until the integrated metric of the radar data has been optimized; and generating a three-dimensional representation of the moving object by reconstructing static patterns of the moving object as a function of the estimated initial conditions that optimize the integrated metric of the radar data.
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26. A system for imaging an object moving in torque-free motion, the system comprising:
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a receiver configured to acquire radar data reflected by the moving object; a memory configured to store instructions for processing the acquired radar data; and a processor configured to determine a motion state of the moving object and generate a three-dimensional representation of the moving object, based on the determined motion state; wherein the motion state is determined based on a model of the inertia tensor components of the moving object.
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Specification