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This paper presents a method to accurately identify the yaw-dynamic model of an unmanned helicopter. First, the model's structure is established by dynamic analysis. Then the model is reconstructed into a combination of three second-order subsystems. As the distribution of the damp ratios and natural frequencies of a second-order subsystems is limited, the model can be accurately identified from real-flight-test...
This paper presents a vision-based navigation algorithm for an autonomous helicopter landing in complex environment include appointed landing mark coupled with several similar targets. The vision navigation system is integrated with algorithms of vision detection, target recognition and navigation instruction calculation. The navigation is used for indicating the helicopter to land on the landing...
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