激光测距复杂重叠回波信号解算方法OA

Aiming at the problem of error in decomposing the echo signal of complex full waveform LiDAR,we proposed a Gaussian decomposition method based on waveform inflection point distribution.We decomposed the target echo data step by step according to the return laser intensity from high to low at first.Then,according to the inflection point distribution state of target waveform curve,we used different standard deviation solution methods to achieve accurate waveform decomposition.Finally,we used Levenberg Marquardt sub-linear least squares algorithm for fitting to obtain accurate simulation waveform.In order to verify the accuracy of this method for waveform data decomposition,we used the weak overlapping waveform data and the complex overlapping waveform data to conduct experiments respectively,and compared with the existing commonly used methods.The experimental results show that the proposed method is superior to other methods in terms of the degree of image fitting and accuracy evaluation index of decomposed image,and can accurately and effectively decompose the complex echo signal.