Pulse laser ranging echo moment resolving method and system as well as terminal

Abstract

The invention discloses a pulse laser ranging echo moment resolving method and system as well as a terminal. The pulse laser ranging echo moment resolving method comprises the following steps: performing batch simulating calculation according to various parameters such as the target feature of a ranging scene, the parameters of a laser rangefinder, a target distance, a ranging angle, digitalization accuracy and noise level to generate theoretical pulse laser ranging full-waveform data; intercepting echo signal waveform data according to a specified width to serve as training and test sample data, and converting the resolving resolution into the classification tag value of the training and test sample data; and subtracting a main wave moment from an echo moment to obtain the ranging flighttime, and calculating the ranging value according to the flight time. Through adoption of the pulse laser ranging echo moment resolving method and system, the features of an echo waveform do not needto be extracted, the features can be automatically identified through deep learning to construct complex features, and echo moment calculation can be finished by using the features, so that the workload is very low compared with practical measuring notification.

Description

technical field [0001] The present invention relates to the technical field of pulsed laser ranging, in particular to a pulsed laser ranging echo time calculation method, system and terminal based on deep learning. Background technique [0002] The pulse laser ranging method, that is, the time-of-flight measurement method, measures the time-of-flight difference between the emitted laser pulse and the echo pulse returned from the target, so that the target distance can be converted. Therefore, the factors that affect the ranging accuracy of the laser radar are mainly Time measurement accuracy and time discrimination accuracy of echo signals. The time measurement accuracy is mainly affected by the fixed time measurement electronics accuracy, while the time identification accuracy is more affected by the signal echo amplitude, dynamic range, echo shape, etc., especially in long-distance laser ranging or complex environment applications, due to the target The range of distance ...

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Problems solved by technology

[0006] In order to overcome the defects of the above-mentioned prior art and solve the problem of the universality of pulse laser ranging echo time calculation, the purpose of the present invention is to provide a pulse laser ranging echo time calculation method, system and method based on deep learning. Terminal, through the method, system and terminal, the echo time calculation can be completed in a low-cost, easy-to-implement, and universal manner

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