Optimized-LM-algorithm-based laser radar waveform decomposition method
A LM algorithm and laser radar technology, applied in the field of laser remote sensing, can solve problems such as the existence of optimized space, and achieve the effects of improving efficiency, reducing the number of changes, and quickly converging performance
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[0031] The technical implementation of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0032] Such as figure 1 As shown, the method of full waveform decomposition based on the optimized LM algorithm, the specific steps are as follows:
[0033] (1) Digitally collect the backscatter full waveform data through the laser radar system. The wavelength of the laser used in the embodiment is 1064 nm, the half-amplitude pulse width is 5 ns, and the sampling rate is 1 Gsps. figure 2 It is the full waveform of the noisy laser collected in the examples.
[0034] (2) Carry out signal enhancement on the observed waveform, including noise processing and smoothing processing. In the embodiment, wavelet denoising is selected for noise processing, and Gaussian smoothing is selected for smoothing. image 3 The blue solid line of represents the waveform obtained by signal enhancement in the embodiment.
[0035] (3) Set the threshold, ...
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