Attitude parameter evaluation method for unmanned vehicle independent landing based on visual information
An unmanned aerial vehicle and autonomous landing technology, applied in the field of unmanned aerial vehicles, can solve the problems of poor reliability of the navigation system and achieve the effect of improving the estimation accuracy
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[0041] The present invention will be further described below in conjunction with the drawings.
[0042] Reference figure 1 — Figure 5 , The specific implementation of the method for estimating the attitude parameters of autonomous landing of unmanned aerial vehicles based on visual information includes the following parts:
[0043] 1. Elevation angle estimation
[0044] Set the binocular camera to be parallel to the body of the unmanned aerial vehicle. The camera coordinate system coincides with the unmanned aerial vehicle's coordinate system. Assume that the unmanned aerial vehicle slides down in a straight line, and the unmanned aerial vehicle is located at a height H′ from the ground, and its flight direction The ground forms an angle α, reference figure 1 with figure 2 . The pitch angle α is obtained by formula (1):
[0045] α = tan - 1 H f ...
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