Vision-based horizon detection and target tracking for UAVs
ISVC'11 Proceedings of the 7th international conference on Advances in visual computing - Volume Part II
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According to the characteristic of GPS direct signal and reflection signal, unmanned aerial vehicle's altitude transducer and GPS navigation equipment are integrated to a miniature detention mapping receiver system. The GPS terrain echo signal mathematics equation has been inferred, the height measuring model which reflects the land surface characteristic has been established. Thus the GPS satellite is taken as the illumination source, the receiver is put on the unmanned aerial vehicle, the unmanned aerial vehicle guidance localization and the height measuring control simulation system are carried on separately using the GPS direct signal and the land reflected signal. The parallel processing of unmanned aerial vehicle guidance pulse, the GPS reflection signal and receiver is realized, which reduces unmanned aerial vehicle's payload, and raises system's operating efficiency. The analysis of simulation result confirms the model validity, which provides the basis for the following the unmanned flight control system optimization design.