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A coherent pulsed laser ranging method, related device and storage medium

A technology of laser ranging and coherent pulse, which is applied in the computer field, can solve the problems of low accuracy of pulsed laser ranging and achieve the effect of improving ranging accuracy

Active Publication Date: 2021-04-30
11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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  • Abstract
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Problems solved by technology

[0008] The present invention provides a coherent pulsed laser ranging method, a related device and a computer-readable storage medium to solve the problem of low ns-level pulsed laser ranging accuracy in the prior art

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  • A coherent pulsed laser ranging method, related device and storage medium
  • A coherent pulsed laser ranging method, related device and storage medium
  • A coherent pulsed laser ranging method, related device and storage medium

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Embodiment Construction

[0045] In order to solve the problem of low accuracy of the existing ns level pulsed laser ranging, the present invention provides a coherent pulsed laser ranging method, the present invention performs two-phase modulation on the laser seed signal, and the received The cross-correlation demodulation is performed on the mixed frequency signal to obtain the target signal time, thereby improving the ranging accuracy of the coherent pulsed laser. The present invention will be described in further 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.

[0046] The first embodiment of the present invention provides a method for coherent pulsed laser ranging, see figure 1 , the method includes:

[0047] S101. Perform chopping, frequency modulation and amplification processing on the laser seed source, and trans...

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Abstract

The invention discloses a coherent pulse laser ranging method, a related device and a computer-readable storage medium. The invention performs two-phase modulation on the laser emission signal, and combines the laser echo signal returned by the target to be measured with the local oscillator The optical signal is mixed in the mixer, and the cross-correlation demodulation is performed on the received mixed signal, and the time point at which the maximum value of the demodulated signal appears is recorded as the target signal time, so as to perform laser ranging calculation. That is to say, the present invention performs two-phase modulation on the laser emission signal, and performs cross-correlation demodulation on the received mixed frequency signal, thereby obtaining the target signal time, thereby improving the accuracy of coherent pulsed laser ranging.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a coherent pulsed laser ranging method, a related device and a computer-readable storage medium. Background technique [0002] Due to the small divergence angle of the laser, the laser pulse duration is extremely short, and the instantaneous power is extremely large (up to megawatts or more), the pulse laser ranging method can make the laser ranging system have good directionality and high ranging accuracy. , strong anti-interference ability, good concealment and other advantages, so it has been widely used. [0003] The pulse laser ranging method has the following advantages: [0004] First, under the same total average optical power output conditions, the pulsed light wave laser range finder can measure a much longer distance than the continuous light wave laser range finder; [0005] Second, the ranging speed is faster; [0006] Third, there is no need for coopera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/08G01S7/41
CPCG01S7/41G01S17/08
Inventor 刘波周寿桓眭晓林颜子恒吴姿妍
Owner 11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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