Interference preventing method and device for laser radar, laser radar and storage medium

A laser radar and anti-interference technology, which is applied in the direction of measuring devices, electromagnetic wave re-radiation, and utilization of re-radiation, can solve the problem of inaccurate laser radar parameters and achieve the effect of accurately obtaining parameters

Active Publication Date: 2020-02-07
LEISHEN INTELLIGENT SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, the received light return pulse is not necessarily the laser pulse emitted by the laser radar and reflected by the target object, but may also be the laser emitted by other equipment. This is not accurate enough for the parameters obtained by lidar

Method used

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  • Interference preventing method and device for laser radar, laser radar and storage medium
  • Interference preventing method and device for laser radar, laser radar and storage medium
  • Interference preventing method and device for laser radar, laser radar and storage medium

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Experimental program
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Effect test

Embodiment 1

[0040] figure 1 The flow diagram of a laser radar anti-jamming method provided in Embodiment 1 of the present invention is applicable to the scene of eliminating the laser radar interference light source. The method can be executed by the laser radar anti-jamming device, and the device can use software and / or hardware, and can be integrated on the lidar.

[0041] Such as figure 1 As shown, the lidar anti-jamming method provided by Embodiment 1 of the present invention includes:

[0042] S110. Transmit at least three groups of laser pulses according to a preset timing, where the preset timing includes a fixed timing.

[0043] Wherein, the preset timing refers to controlling the timing of laser pulse emission. Laser pulses refer to laser light used to detect parameters of a target object. For example, when the distance to the target object needs to be detected, a laser pulse is sent out, which is reflected by the target object and received by the lidar, and the distance to t...

Embodiment 2

[0060] figure 2 It is a schematic flowchart of a lidar anti-jamming method provided in Embodiment 2 of the present invention. This embodiment is a further refinement of the above-mentioned technical solution, and is applicable to the scene where the laser radar interfering light source is eliminated. The method can be executed by an anti-jamming device of the laser radar, which can be realized by software and / or hardware, and can be integrated on the laser radar.

[0061] Such as figure 2 As shown, the laser radar anti-jamming method provided by Embodiment 2 of the present invention includes:

[0062] S210. Inject the random sequence into the fixed sequence to obtain an anti-jamming sequence.

[0063] Wherein, the random timing refers to an uncertain timing. Inject random timing into fixed timing to obtain anti-jamming timing. Specifically, each random time sequence may or may not be the same, and may be determined according to actual usage conditions, which is not limi...

Embodiment 3

[0079] Figure 5 It is a structural schematic diagram of a lidar anti-jamming device provided in Embodiment 3 of the present invention. This embodiment is applicable to the scene of eliminating the interference light source of lidar. The device can be realized by software and / or hardware, and can be Integrated on lidar.

[0080] Such as Figure 5 As shown, the lidar anti-jamming device provided in this embodiment may include a transmitting device 310, a receiving device 320, a computing device 330, and a rejecting device 340, wherein:

[0081] The emitting device 310 is configured to emit at least three groups of laser pulses according to a preset timing sequence, and the preset timing sequence includes a fixed timing sequence;

[0082] The receiving device 320 is configured to obtain at least three sampling data according to the received return light pulse;

[0083] Calculation means 330, configured to calculate the characteristic information of each of the laser pulses co...

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Abstract

Embodiments of the invention provide an interference preventing method and device for laser radar, laser radar and a storage medium. The interference preventing method for laser radar comprises: transmitting at least three groups of laser pulses according to a preset time series, the preset time series comprising a fixed time series; obtaining at least three sampling data according to the receivedreturn pulses; calculating, according to the sampling data, characteristic information that the laser pulses correspond to the return pulses; and eliminating interference points of an external lightsource according to the characteristic information. By eliminating the interference points of the external light source, the laser radar accurately obtains parameters.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of laser radar, and in particular, to a laser radar anti-jamming method and device, laser radar and storage medium. Background technique [0002] Lidar is a radar system that emits laser pulses to detect the position, speed and other characteristic quantities of the target. Its working principle is to first transmit the detection laser pulse to the target object, and then combine the received return light pulse reflected from the target object with the laser The pulses are compared, and after proper processing, the lidar can obtain the relevant parameters of the target object, such as the distance from the target object. [0003] However, the received light return pulse is not necessarily the laser pulse emitted by the laser radar and reflected by the target object, but may also be the laser emitted by other equipment, so the parameters obtained by the laser radar are not accurate enoug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/02G01S7/484G01S7/495
CPCG01S17/02G01S7/484G01S7/495Y02A90/10
Inventor 胡小波段佩华
Owner LEISHEN INTELLIGENT SYST CO LTD
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