System, method and computer program product for detecting and tracking a moving ground target having a single phase center antenna
First Claim
1. A synthetic aperture radar (SAR) system having a single phase center antenna, the system comprising:
- a measurement unit capable of receiving a phase history of a target point scatterer, wherein the measurement unit is capable of estimating a ground position, velocity and acceleration of the target based upon the phase history, the measurement unit being capable of estimating the ground position, velocity and acceleration to thereby detect the target; and
a tracker unit capable of updating the range, radial velocity and acceleration of the target to thereby track the target based upon the estimated ground position, velocity and acceleration, the tracker unit being capable of updating the ground position, velocity and acceleration using a Kalman filter.
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Accused Products
Abstract
A synthetic aperture radar (SAR) system having a single phase center antenna is provided, the SAR system including a measurement unit and a tracker unit. The measurement unit is capable of receiving a phase history of a target point scatterer. From the phase history, then, the measurement unit is capable of estimating a ground position, velocity and acceleration of the target to thereby detect the target. The tracker unit, in turn, is capable of updating the ground position, velocity and acceleration of the target to thereby track the target based upon the ground position, velocity and acceleration. In this regard, the tracker unit is capable of updating the ground position, velocity and acceleration using a Kalman filter.
37 Citations
28 Claims
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1. A synthetic aperture radar (SAR) system having a single phase center antenna, the system comprising:
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a measurement unit capable of receiving a phase history of a target point scatterer, wherein the measurement unit is capable of estimating a ground position, velocity and acceleration of the target based upon the phase history, the measurement unit being capable of estimating the ground position, velocity and acceleration to thereby detect the target; and
a tracker unit capable of updating the range, radial velocity and acceleration of the target to thereby track the target based upon the estimated ground position, velocity and acceleration, the tracker unit being capable of updating the ground position, velocity and acceleration using a Kalman filter. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A synthetic aperture radar (SAR) system having a single phase center antenna, the system comprising:
a processing element capable of receiving a phase history of a target point scatterer, and thereafter estimating a ground position, velocity and acceleration of the target based upon the phase history to thereby detect the target, wherein the processing element is also capable of updating the ground position, velocity and acceleration of the target to thereby track the target based upon the estimated ground position, velocity and acceleration, the processing element being capable of updating the ground position, velocity and acceleration using a Kalman filter. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method comprising:
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receiving a phase history of a target point scatterer, the phase history received from a synthetic aperture radar (SAR) system having a single phase center antenna;
estimating a ground position, velocity and acceleration of the target based upon the phase history, the ground position, velocity and acceleration being estimated to thereby detect the target; and
updating the ground position, velocity and acceleration of the target to thereby track the target based upon the estimated ground position, velocity and acceleration, the ground position, velocity and acceleration being updated using a Kalman filter. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A computer program product comprising at least one computer-readable storage medium having computer-readable program portions stored therein, the computer-readable program portions comprising:
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a first executable portion for receiving a phase history of a target point scatterer, the first executable portion being adapted to receive the phase history from a synthetic aperture radar (SAR) system having a single phase center antenna;
a second executable portion for estimating a ground position, velocity and acceleration of the target based upon the phase history, the second executable portion being adapted to estimate the ground position, velocity and acceleration to thereby detect the target; and
a third executable portion for updating the ground position, velocity and acceleration of the target to thereby track the target based upon the estimated ground position, velocity and acceleration, the third executable portion being adapted to update the ground position, velocity and acceleration using a Kalman filter. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification