Abstract：The spatial orientation method of oscillating orange was investigated.The under-damped oscillation model was used to denote orange oscillation process. FFT spectrum analysis method was used to determine the oscillation period of oscillating orange, and Fourier curve fitting method was used to determine the centroid coordinates of equilibrium point.The three-dimensional coordinates of equili-brium point were determined based on the centroid coordinates of left orange image and corresponding right orange image.According to oscillation period and three-dimensional spatial coordinates of equili-brium point, the spending time of each phase and the movement velocity were determined. The experimental results show that the algorithm can well satisfy the requirements of spatial orientation of oscillating orange.
2015, Vol. 36 
