An in situ measurement of flow field of river based on four-rotor UAV

摘要

An in situ measurement method of flow field by four-rotor unmanned aerial vehicle (UAV) is proposed, which is mainly based on the following considerations: (1) Four-rotor UAV is a highly integrated image acquisition tool; (2) The operation is easy and the price is cheap; (3) It has good adaptability to complex environment. A multi-scale optical flow analysis method is developed to estimate the in-situ flow field of the river surface. Experiment results show that under certain conditions, the four-rotor unmanned aerial vehicle can achieve in situ river surface flow field measurement.