Laser radar echo wave processing system and method

A laser radar and processing system technology, applied to radio wave measurement systems, instruments, etc., can solve the problems of reducing false alarm rate, detector dark count noise interference, etc., and achieve the effect of reducing false alarm rate

Pending Publication Date: 2018-07-13
苏州镭图光电科技有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to provide a laser radar echo processing system and method that solves the problem of the dark count noise interference of the detector itself in the echo signal and effectively reduces the false alarm rate

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings.

[0033] It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0035] Techniques and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques and devices should be considered part of the description.

[0036] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have different v...

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Abstract

The invention relates to a laser radar echo wave processing system and method. The laser radar echo wave signal processing system comprises: a transmitting module for transmitting pulse laser, a receiving module used for receiving reflected light, a sampling module used for sampling analysis and a main control and signal processing module, wherein the transmitting module comprises a laser drivingcircuit, a laser device and a light beam shaping module; the receiving module comprises a receiving optical lens and a photodetector; the sampling module comprises a voltage threshold setting circuitand a voltage comparison circuit; the main control and signal processing module is used for providing trigger signals for the laser transmitting module, collecting echo time width signals, discriminating dark counting noise and real echo signals, and performing flight time measuring operation. Thus, according to the laser radar echo wave processing system and method disclosed in the present invention, noise can be filtered by adding a screening mechanism during echo signal processing operation, and false alarm rates can be lowered without increasing system power consumption and lens apertures.

Description

technical field [0001] The invention relates to the technical field of laser radar, in particular to a laser radar echo processing system and method. Background technique [0002] Lidar is a means of active detection of spatial information. Its basic working principle is similar to that of traditional radar: Lidar emits laser light to the target to be detected, and then the receiver collects the light signal reflected by the target, and determines by measuring the round-trip time of the emitted signal. The distance of the target, due to the advantages of high coherence, directionality, and monochromaticity of the laser, the laser radar system can achieve long-distance, high-precision ranging functions, and has been used in automatic driving, three-dimensional modeling of buildings, terrain mapping, It has been applied in many occasions such as rendezvous and docking. [0003] Lidar often uses the pulse time-of-flight method to extract the distance signal. The basic principl...

Claims

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Application Information

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IPC IPC(8): G01S7/487
CPCG01S7/4876
Inventor 朱俊吴小可陈忻
Owner 苏州镭图光电科技有限公司
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