发明名称 |
NON-CAUSAL ATTITUDE ESTIMATION FOR REAL-TIME MOTION COMPENSATION OF SENSED IMAGES ON A MOVING PLATFORM |
摘要 |
An attitude estimator provides non-causal attitude estimates for real-time motion compensation of sensed images on a moving platform. A non-causal filter processes uncompensated attitude samples received with a latency from an IMU at a high rate clock to provide an attitude estimate that is strictly non-causal but satisfies a just-in-time (JIT) criteria for real-time motion compensation of images captured at a low rate clock. On-average the error of the non-causal attitude estimate is less than the error of a causal attitude estimate. If the lag added by the non-causal filter is greater than the latency, the effective transfer function of the non-causal filter has a negative gain slope that attenuates high frequency noise of the uncompensated attitude samples. |
申请公布号 |
WO2013191794(A1) |
申请公布日期 |
2013.12.27 |
申请号 |
WO2013US35793 |
申请日期 |
2013.04.09 |
申请人 |
RAYTHEON COMPANY |
发明人 |
COVELLO, JAMES, A.;LARACUENTE, ANGEL, D.;FRETHEIM, TORMOD |
分类号 |
H04N5/232 |
主分类号 |
H04N5/232 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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