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Laser intensity modulation distance measurement and speed measurement method and system, terminal equipment and storage medium

A laser intensity and speed measurement technology, which is applied in radio wave measurement systems, measurement devices, electromagnetic wave re-radiation, etc., can solve problems such as poor real-time performance, poor laser anti-interference ability, and poor speed measurement accuracy

Active Publication Date: 2021-01-15
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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  • Laser intensity modulation distance measurement and speed measurement method and system, terminal equipment and storage medium
  • Laser intensity modulation distance measurement and speed measurement method and system, terminal equipment and storage medium
  • Laser intensity modulation distance measurement and speed measurement method and system, terminal equipment and storage medium

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Embodiment Construction

[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, starting from the launch time , after dividing the received signal by the modulating signal, press the modulating duration Do convolut...

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Abstract

The invention discloses a laser intensity modulation distance measurement and speed measurement method and system, terminal equipment and a storage medium. The laser intensity modulation distance measurement and speed measurement method comprises the steps of emitting light intensity modulated laser towards a to-be-measured target; taking the emitting time as a time starting point, dividing the receiving signal by the modulation signal, then carrying out convolution according to the modulation duration, and meanwhile, storing the received signal according to the time exceeding the modulation time; acquiring emitting and receiving duration according to the position of the convolution maximum value; de-noising the received signal after the emitting and receiving duration to obtain de-noisedreceived light; obtaining an emitted light normalization value of the emitted light and a received light normalization value of the de-noised received light; obtaining a rate according to the functionrelationship among the emitted light normalization value, the received light normalization value, the emitting and receiving duration and the rate of the to-be-measured target; and obtaining the distance of the to-be-measured target according to the light speed and the emitting and receiving duration. According to the invention, single pulse simultaneous distance measurement and speed measurementare realized, the anti-interference capability is strong, the real-time performance is good, and the speed measurement is more accurate.

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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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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