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Method and system for laser intensity modulation distance measurement and speed measurement, terminal equipment, storage medium

A technology of laser intensity and speed measurement, applied in radio wave measurement systems, measurement devices, instruments, etc., can solve the problems of poor laser anti-interference ability, poor speed measurement accuracy, and many transmission frequencies.

Active Publication Date: 2021-04-23
武汉光谷航天三江激光产业技术研究院有限公司
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Problems solved by technology

The existing methods of distance measurement and speed measurement have poor real-time performance, many transmission frequencies, poor speed measurement accuracy and poor laser anti-interference ability

Method used

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  • Method and system for laser intensity modulation distance measurement and speed measurement, terminal equipment, storage medium
  • Method and system for laser intensity modulation distance measurement and speed measurement, terminal equipment, storage medium
  • Method and system for laser intensity modulation distance measurement and speed measurement, terminal equipment, storage medium

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[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0047] In one embodiment of the present invention, as figure 1 As shown, a laser intensity modulation ranging and speed measuring method comprises steps:

[0048] S1, emit light intensity modulated laser light towards the target to be measured;

[0049] S2, take the launch time as the time starting point t 0 , after dividing the received signal by the modulated signal, perform convolution acc...

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Abstract

The invention discloses a laser intensity modulation distance measurement speed measurement method and system, terminal equipment, and a storage medium. The laser intensity modulation distance measurement speed measurement method includes the steps of: emitting light intensity modulated laser light towards the target to be measured; taking the emission time as the time starting point, After dividing the received signal by the modulated signal, convolution is performed according to the modulation duration, and at the same time, the received signal is stored according to the excess modulation time; the transmission and reception duration is obtained according to the positive maximum value of the volume; the received signal after the transmission and reception duration is denoised to obtain Denoise the received light; obtain the normalized value of the emitted light and the normalized value of the received light of the denoised received light; according to the function of the normalized value of the emitted light, the normalized value of the received light, the sending and receiving time, and the speed of the target to be measured The rate is obtained through the relationship; the distance of the target to be measured is obtained according to the speed of light and the sending and receiving time. The invention realizes single pulse simultaneous distance measurement and speed measurement, and has strong anti-interference ability, good real-time performance and more accurate speed measurement.

Description

technical field [0001] The invention belongs to the technical field of laser distance measurement and speed measurement, and more specifically relates to a laser intensity modulation distance measurement and speed measurement method and system, a terminal device, and a storage medium. Background technique [0002] The traditional laser ranging uses laser pulses to measure the optical path time difference, which is realized by using the linear relationship between the optical path and the time difference, and the speed measurement is realized by using Doppler frequency shift or two times of distance measurement. The existing distance measurement and speed measurement methods have poor real-time performance, many transmission frequencies, poor speed measurement accuracy and poor laser anti-interference ability. [0003] Therefore, those skilled in the art urgently need to provide a laser ranging and speed measurement technology solution with low transmission frequency, good re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/58
CPCG01S17/58
Inventor 王耀东庹文波杜征宇刘厚康张乐周康任杰姜永亮李强
Owner 武汉光谷航天三江激光产业技术研究院有限公司
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