A laser radar full waveform data decomposition sounding method, device and electronic equipment

A waveform data, lidar technology, applied in radio wave measurement systems, instruments, etc., to improve accuracy and reliability, improve rationality, and avoid effects

Active Publication Date: 2022-01-25
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Abstract
  • Description
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Problems solved by technology

[0004] The problem solved by the present invention is: how to effectively eliminate noise data and improve the calculation accuracy of water depth

Method used

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  • A laser radar full waveform data decomposition sounding method, device and electronic equipment
  • A laser radar full waveform data decomposition sounding method, device and electronic equipment
  • A laser radar full waveform data decomposition sounding method, device and electronic equipment

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Embodiment Construction

[0060] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0061] combine figure 1 As shown, the embodiment of the present invention provides a laser radar full waveform data decomposition sounding method, including the following steps:

[0062] Step 100, acquiring the full waveform data of the detection research water area.

[0063] Specifically, in the research waters, the airborne lidar system is used to emit, for example, a high-power, narrow-pulse laser beam, and the distribution of the corresponding echo signal energy in time series is recorded to form a complete full waveform data for use in Detect the depth of the research waters, etc.

[0064] Step 200: Perform preprocessing according to the channel data of the full waveform data to determine the first valid waveform data.

[0065] Spe...

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Abstract

The present invention provides a laser radar full waveform data decomposition sounding method, device and electronic equipment, wherein the laser radar full waveform data decomposition sounding method includes: obtaining the full waveform data of the detection research waters; Preprocessing, determining the first effective waveform data; filtering the first effective waveform data to obtain the second effective waveform data and noise data; screening according to the second effective waveform data and noise data to determine the correct channel data; according to the correct channel Gaussian iterative decomposition based on curvature is performed on the data to determine the Gaussian echo parameter set; optimization is performed according to the Gaussian echo parameter set to determine the real water surface time and real bottom time; according to the real water surface time and real bottom time, the water depth of the research water area is determined. The invention solves and jointly verifies the research water area through multi-channel data, effectively eliminates a large amount of noise data, and improves the calculation accuracy of water depth.

Description

technical field [0001] The present invention relates to the technical field of laser radar, in particular to a laser radar full waveform data decomposition sounding method, device and electronic equipment. Background technique [0002] Airborne Laser bathymetric (ALB) technology can quickly and accurately obtain the water depth and underwater topography of research waters, and has developed rapidly in recent years. It has a wide range of applications in geomorphological surveying and mapping. [0003] Since the single-channel data transmission method of the lidar system cannot meet the situation of large data transmission volume, at present, multi-channel data combination is mostly used in lidar sounding. In terms of multi-channel joint processing, such as using the near-infrared channel to determine the position of the water surface echo, using the deep-water channel to determine the position of the bottom echo, etc., it is impossible to effectively eliminate the wrong dat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/48
CPCG01S7/4802
Inventor 乐源吴临谌一夫董玉森张东方赵倩李帅王力哲
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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