Airplane angular rate signal reconstruction method based on unscented kalman filter
An unscented Kalman, signal reconstruction technology, applied in the aviation field, can solve the problems of non-linear aircraft that cannot be directly applied, unsuitable for engineering applications, and complicated operation.
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[0097] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific examples.
[0098] refer to figure 1 , an aircraft angular rate signal reconstruction method based on unscented Kalman filtering, comprising the following steps:
[0099] 1) Establishment of state equation
[0100] Considering the generality of the problem, assume the following conditions:
[0101] (1) The plane is a rigid body, and its mass is considered constant;
[0102] (2) Treat the earth as an inertial system, ignoring the influence of the earth's rotation and revolution;
[0103] (3) Ignore the curvature of the earth, that is, adopt the so-called "flat earth assumption";
[0104] (4) Assuming that the plane is symmetrically arranged, that is, the product of inertia I xz and I zy is equal to zero.
[0105] The spatial motion of a rigid-body aircraft can be described by the six-degree-of-freedom relationship of th...
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