Laser radar full-waveform data decomposition sounding method and device, and electronic equipment

A technology of laser radar and waveform data, applied in radio wave measurement systems, instruments, etc., to achieve the effects of improving accuracy and reliability, improving rationality, and avoiding influence

Active Publication Date: 2021-11-05
CHINA UNIV OF GEOSCIENCES (WUHAN)
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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

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  • Laser radar full-waveform data decomposition sounding method and device, and electronic equipment
  • Laser radar full-waveform data decomposition sounding method and device, and electronic equipment
  • Laser radar full-waveform data decomposition sounding method and 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 effective waveform data.

[0065]...

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Abstract

The invention provides a laser radar full-waveform data decomposition sounding method and device, and electronic equipment. The method comprises the following steps: obtaining full-waveform data of a detection research water area; performing preprocessing according to the channel data of the full-waveform data, and determining first effective waveform data; filtering the first effective waveform data to obtain second effective waveform data and noise data; screening according to the second effective waveform data and the noise data to determine correct channel data; carrying out gaussian iterative decomposition based on curvature according to the correct channel data, and determining a Gaussian echo parameter set; optimizing according to the Gaussian echo parameter set, and determining real water meter time and real water bottom time; and determining the water depth of the research water area according to the real water meter time and the real water bottom time. According to the invention, resolving and joint verification are carried out on a research water area through multi-channel data, a large amount of noise data is effectively eliminated, and the water depth calculation precision is improved.

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 Applications(China)
IPC IPC(8): G01S7/48
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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