Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A vehicle-mounted obstacle avoidance laser radar waveform extraction method, laser radar and medium

A laser radar and waveform extraction technology, which is applied in the directions of electromagnetic wave re-radiation, radio wave measurement system, instrument, etc., can solve the problem of large impact on the echo dynamic range of ranging accuracy, low maturity of photon counting scheme, multi-target recognition and acquisition Weak ability and other problems, to achieve the effect of not being easy to search, overcome the difficulty of extraction, and improve the dynamic range

Active Publication Date: 2020-11-17
白犀牛智达(北京)科技有限公司
View PDF17 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the system layout of the threshold identification scheme is relatively simple, but the ranging accuracy is greatly affected by the dynamic range of the echo, and the ability to recognize multiple targets is weak; the full waveform acquisition scheme of the laser echo channel has a slightly complicated system architecture and a large data flow , online real-time processing is more complicated, but it is more suitable for multi-target recognition and acquisition; the photon counting scheme is currently low in maturity and high in cost, and is not suitable for the current low-cost vehicle-mounted obstacle avoidance lidar system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A vehicle-mounted obstacle avoidance laser radar waveform extraction method, laser radar and medium
  • A vehicle-mounted obstacle avoidance laser radar waveform extraction method, laser radar and medium
  • A vehicle-mounted obstacle avoidance laser radar waveform extraction method, laser radar and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.

[0045] Terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only, and are not intended to limit the present disclosure. The singular forms "a", "said" and "the" used in the embodiments of this disclosure and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise, "a plurality" Generally contain at least two.

[0046] It should be u...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a vehicle-mounted obstacle avoidance laser radar waveform extraction method, laser radar and medium. The method includes the following steps: receiving an optical signal at the focal plane through a photoelectric detector, and performing photoelectric conversion to obtain an electrical analog signal of the laser radar ; convert the analog signal into the digital waveform of the echo through the high-speed AD and modulation circuit; store the digital waveform online, and obtain the echo interval of the effective waveform online through the sliding window filtering method; The effective waveform is integrated to obtain the target centroid position. The invention relates to a waveform extraction method of vehicle-mounted obstacle avoidance laser radar. The method relies on the laser echo full waveform acquisition technology system, and acquires all laser echo signals on the laser transmission channel in a single acquisition, which can be used for the full waveform data channel. Analyze the information of all sampling points on the system to obtain the position of multi-pulse and multi-centroid, thus achieving centimeter-level ranging accuracy.

Description

technical field [0001] The invention relates to the field of vehicle-mounted obstacle avoidance laser radar, in particular to a vehicle-mounted obstacle avoidance laser radar waveform extraction method, a laser radar and a medium, which are suitable for a vehicle-mounted laser radar system with real-time and high-speed response, and can realize real-time effective target recognition, multi-target The waveform is extracted and the distance information is obtained. [0002] technical background [0003] At present, in order to quickly respond to the distance of the moving target, obtain the ranging value accurately, and reduce the probability of false alarm of the target, the vehicle-mounted obstacle avoidance lidar usually uses a micro-pulse, high repetition frequency, quasi-continuous laser, the laser power is about 1W, and the repetition frequency is 300KHz. The system aperture is 3mm; through the lidar equation, it can be obtained that the peak power of the laser signal rea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/487G01S17/931
CPCG01S7/4873G01S17/931
Inventor 王瀚基
Owner 白犀牛智达(北京)科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com