发明名称 |
SYSTEMS AND METHODS FOR ATTITUDE FAULT DETECTION BASED ON INTEGRATED GNSS/INERTIAL HYBRID FILTER RESIDUALS |
摘要 |
Systems and methods for attitude fault detection based on integrated GNSS/inertial hybrid filter residuals are provided. In one embodiment, a fault detection system for aircraft attitude measurement system comprises: a sensor monitor coupled to a first inertial measurement unit, the sensor monitor comprising: a navigation error model for the first inertial measurement unit, the model configured to model a plurality of error states including at least an attitude error state vector, an velocity error state vector, and a position error state vector determined from data generated by the first inertial measurement unit; and a propagator-estimator configured to propagate and update error states based on GNSS data; and a residual evaluator configured to input measurement error residual values generated by the propagator-estimator, wherein the residual evaluator outputs an alert signal when the measurement error residual values exceed a threshold. |
申请公布号 |
US2016290826(A1) |
申请公布日期 |
2016.10.06 |
申请号 |
US201414564359 |
申请日期 |
2014.12.09 |
申请人 |
Honeywell International Inc. |
发明人 |
Brenner Mats Anders;Ahlbrecht Mark A.;Morrison John R. |
分类号 |
G01C23/00;G07C5/08;G05D1/08;B64D47/00 |
主分类号 |
G01C23/00 |
代理机构 |
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代理人 |
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主权项 |
1. A fault detection system for aircraft attitude measurement system, the fault detection system comprising:
a sensor monitor coupled to a first inertial measurement unit of the aircraft attitude measurement system, the sensor monitor comprising:
a navigation error model for the first inertial measurement unit, the navigation error model configured to model a plurality of error states including at least an attitude error state vector, an velocity error state vector, and a position error state vector determined from data generated by the first inertial measurement unit; anda propagator-estimator configured to propagate and update the plurality of error states from the navigation error model based on GNSS data; and a residual evaluator configured to input measurement error residual values generated by the propagator-estimator, wherein the residual evaluator outputs an alert signal when the measurement error residual values exceed a predetermined statistical threshold. |
地址 |
Morristown NJ US |