Method and device for acquiring laser imaging echo waveform and level characteristics

Abstract

The invention relates to a method and a device for acquiring laser imaging echo waveform and level characteristics, a laser imaging device is adopted for transmitting laser pulse to a target, and a multi-echo time delay measurement unit and a maximum undistorted waveform collection unit of the device are utilized for respectively extracting multi-echo time delay data and full waveform data of the same transmitted pulse. The full waveform data is utilized for extracting the echo pulse broadening characteristic, the power characteristic, the waveform distribution characteristic and the like as target characteristics and saving in an echo pulse database. The multi-echo time delay data is utilized for generating a target multi-level point cloud image, and the echo power characteristic is further utilized for generating a target gray image. The method and the device fully utilize time delay, peak power and waveform information contained in echo pulse, and can not only obtain the target conventional point cloud image, but also realize the target multi-level imaging and the target gray imaging, generate the waveform characteristic database and achieve the purpose of acquiring the laser imaging echo waveform and level characteristics.

Description

technical field [0001] The invention relates to the field of laser imaging, in particular to a method and device for acquiring laser imaging echo waveforms and hierarchical features. Background technique [0002] With the advancement of laser technology and laser receiving technology, and the increasing demand for high-precision detection in various fields of society, laser imaging technology is attracting more and more attention from people. Especially in recent years, its gradual application in remote sensing, surveying and mapping, atmospheric observation, resource survey and other fields has promoted the continuous development of imaging technology. [0003] Using high-brightness, high-direction and high-coherence lasers to detect targets and direct imaging technology can constitute airborne, space-borne and ground-based laser imaging systems. Using laser active detection, the target can be measured and the high-resolution distance data of the target can be obtained. C...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned existing technologies and systems, provide a method for acquiring laser imaging echo waveforms and hierarchical features, and solve the problem that the prior art and systems obtain less laser echo information, and the echo information To solve the problem of insufficient acquisition ability, realize multi-level imaging, grayscale imaging, and waveform feature extraction of laser targets

Images