CN109407108A - A kind of laser radar system and distance measuring method - Google Patents
A kind of laser radar system and distance measuring method Download PDFInfo
- Publication number
- CN109407108A CN109407108A CN201811541534.XA CN201811541534A CN109407108A CN 109407108 A CN109407108 A CN 109407108A CN 201811541534 A CN201811541534 A CN 201811541534A CN 109407108 A CN109407108 A CN 109407108A
- Authority
- CN
- China
- Prior art keywords
- light beam
- laser light
- laser
- radar system
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 210000001525 retina Anatomy 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 1
- 230000004446 light reflex Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The invention discloses a kind of laser radar system and distance measuring methods.The transmitting unit of the laser radar system is for emitting first laser light beam；First laser light beam exposes to target object back reflection to converting unit；Converting unit is used to the first laser light beam reflected through target object being converted to second laser light beam；The frequency of first laser light beam is less than the frequency of second laser light beam；Receiving unit is for receiving second laser light beam；Signal processing unit is used to be compared to obtain the time difference with the second time at the first time, and then the distance of laser radar system and target object is obtained according to the time difference, wherein, it is at the first time the time that transmitting unit emits first laser light beam, the second time was the time that receiving unit receives second laser light beam；Or, signal processing unit is used to obtain the distance of laser radar system and target object according to the phase difference between first laser light beam and second laser light beam.It realizes under the premise of meeting eye-safe, reduces cost, improve detection efficient, while improving the effect of detection range.
Description
Technical field
The present embodiments relate to optical technical field more particularly to a kind of laser radar systems and distance measuring method.
Background technique
Laser radar mainly includes transmitting, reception and signal processing three parts.Emitting portion is used for emission pulse laser, swashs
Light reflexes to receiving portion by target object, and signal processing is by transmitting light and receives the optical oomputing light flight time come really
Determine object distance.
In order to improve laser radar detection distance, there are mainly two types of methods at present, one is detector sensitivity is improved, separately
One is increase laser power.
If laser radar uses visible light as light source, the retina of the mankind can be injured, in order to realize eye-safe,
Laser radar is all made of infrared light as light source, however, infrared detector is generally used in order to improve detector sensitivity,
Although infrared detector is higher to infrared light detecting efficiency, cost is unfavorable for commercialization much higher than conventional detector；
If laser transmission power is too small, detection range will be relatively close.
Summary of the invention
The present invention provides a kind of laser radar system and distance measuring method, realizes under the premise of meeting eye-safe, reduces
Cost improves detection efficient, while improving the purpose of detection range.
In a first aspect, the embodiment of the invention provides a kind of laser radar systems, comprising:
Transmitting unit, converting unit, receiving unit and signal processing unit；The transmitting unit and the reception are single
Member is connect with the signal processing unit；
The transmitting unit is for emitting first laser light beam；
The first laser light beam exposes to target object back reflection to the converting unit；The converting unit is used for will
Second laser light beam is converted to through the first laser light beam that the target object reflects；The frequency of the first laser light beam
Less than the frequency of the second laser light beam；
The receiving unit is for receiving the second laser light beam；
The signal processing unit is used to be compared to obtain the time difference with the second time at the first time, and then according to institute
State the distance that the time difference obtains the laser radar system and the target object, wherein the first time is the transmitting
Unit emits the time of the first laser light beam, and second time is that the receiving unit receives the second laser light beam
Time；
Or, the signal processing unit is used for according to the phase between the first laser light beam and the second laser light beam
Potential difference obtains the distance of the laser radar system and the target object.
Further, the laser radar system further includes filter unit；
The filter unit is set on the path of the propagation of the light between the target object and the converting unit, is used
In filtering out the interference light beam in the first laser light beam reflected through the target object.
Further, the filter unit includes optical filter.
Further, the wave-length coverage of the first laser light beam of the transmitting unit transmitting is λ1, 760nm≤λ1≤
10μm；
The wave-length coverage of the second laser light beam is λ2, 400nm≤λ2≤760nm。
Further, the converting unit includes frequency multiplier.
Further, the receiving unit includes receiving camera lens and detector；
The reception camera lens is used to the second laser light beam focusing on the detector；
The detector is used to the second laser light beam being converted to electric signal.
Further, the detector includes silicon detector, area array sensor or ccd image sensor.
Further, the transmitting unit includes:
Semiconductor laser, optical fiber laser, solid state laser or gas laser.
Further, the transmission power of the transmitting unit is P, 1W≤P≤100W.
Second aspect, the embodiment of the invention also provides a kind of distance measuring method of laser radar system, the laser radar systems
The distance measuring method of system is realized based on the laser radar system of first aspect；
The distance measuring method of the laser radar system includes:
The transmitting unit is opened, to form first laser light beam；
It controls the converting unit and the first laser light beam reflected through the target object is converted into second laser
Light beam；
The second laser light beam is received by the receiving unit；
The signal processing unit will at the first time and the second time was compared to obtain the time difference, so according to it is described when
Between difference obtain the distance of the laser radar system and the target object, wherein the first time is the transmitting unit
Emit the time of the first laser light beam, second time be the receiving unit receive the second laser light beam when
Between；
Or, the signal processing unit is according to the phase difference between the first laser light beam and the second laser light beam
Obtain the distance of the laser radar system and the target object.
The present invention emits first laser light beam by transmitting unit, and first laser light beam exposes to target object back reflection extremely
The first laser light beam of reflection is converted to second laser light beam by converting unit, converting unit, and receiving unit receives second laser
Light beam, wherein the frequency of first laser light beam is less than second laser light beam, and signal processing unit will first time and the second time
Be compared to obtain the time difference, so according to the time difference obtain the laser radar system and the target object away from
From, wherein emit the time of first laser light beam for transmitting unit at the first time, the second time was that receiving unit reception second swashs
The time of light light beam swashs or, signal processing unit is obtained according to the phase difference between first laser light beam and second laser light beam
The distance of optical detection and ranging system and target object solves in the prior art if can injure the view of people using visible light as light source
Nethike embrane, if using infrared detector, it is at high cost, it is unfavorable for commercialization；And laser transmission power it is too small when, detection range
Will closer problem, realize under the premise of meeting eye-safe, reduce cost, improve detection efficient, while improving detection
The effect of distance.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of laser radar system provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram that a kind of laser radar system provided in an embodiment of the present invention includes filter unit；
Fig. 3 is a kind of flow chart of the distance measuring method of laser radar system provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Fig. 1 is a kind of structural schematic diagram for laser radar system that the embodiment of the present invention one provides, laser radar system packet
Include transmitting unit 10, converting unit 20, receiving unit 30 and signal processing unit 40；Transmitting unit 10 and receiving unit 30
It is connect with signal processing unit 40；Transmitting unit 10 is for emitting first laser light beam；First laser light beam exposes to target
50 back reflection of object is to converting unit 20；Converting unit 20 is for being converted to the first laser light beam reflected through target object 50
Second laser light beam；The frequency of first laser light beam is less than the frequency of second laser light beam；Receiving unit 30 is for receiving second
Laser beam,；Signal processing unit 40 is used to obtain laser thunder according to the product of first time and the second time difference and the light velocity
Up to the distance of system and target object 50, wherein it is at the first time the time of the transmitting first laser light beam of transmitting unit 10, second
Time is the time that receiving unit 30 receives second laser light beam.
Wherein, first laser light beam can be modulated to pass through, the laser light with specific frequency (wavelength) and phase
Beam.Converting unit 20 include can with the unit of switched laser beam frequencies, in the present embodiment transmitting unit 10 emits first swashs
Light light beam exposes to 50 back reflection of target object to converting unit 20, and converting unit 20 is converted to received first laser light beam
The second laser light beam bigger than first laser beam frequencies, receiving unit 30 receive second laser light beam, signal processing unit 40
It is obtained by comparing the time that the time and receiving unit 30 of the transmitting first laser light beam of transmitting unit 10 receive second laser light beam
To the difference of two time, then by this time difference multiplied by the spread speed of laser, and then laser radar system and mesh are obtained
The distance between object 50 is marked, illustratively, the time that transmitting unit 10 emits first laser light beam is t1, receiving unit 30 connects
The time for receiving second laser light beam is t2, spread speed is 300000km/s to laser in air, then laser radar system and mesh
Marking the distance between object 50 is (t2-t1)*300000/2.Alternatively, signal processing unit 40 is according to first laser light beam and second
Phase difference between laser beam obtains the distance of laser radar system and target object 50.
The technical solution of the present embodiment emits first laser light beam by transmitting unit, and first laser light beam exposes to mesh
Object back reflection is marked to converting unit, the first laser light beam of reflection is converted to second laser light beam by converting unit, is received single
Member receives second laser light beam, wherein the frequency of first laser light beam is less than second laser light beam, and signal processing unit is by first
Time and the second time are compared to obtain the time difference, so according to the time difference obtain laser radar system and target object away from
From, wherein emit the time of first laser light beam for transmitting unit at the first time, the second time was that receiving unit reception second swashs
The time of light light beam, alternatively, signal processing unit is obtained according to the phase difference between first laser light beam and second laser light beam
The distance of laser radar system and target object solves in the prior art if can injure people using visible light as light source
Retina, if using infrared detector, it is at high cost, it is unfavorable for commercialization；And laser transmission power it is too small when, detection away from
From will closer problem, realize under the premise of meeting eye-safe, reduce cost, improve detection efficient, while improving spy
Ranging from effect.
Based on the above technical solution, optionally, Fig. 2 is a kind of laser radar system provided in an embodiment of the present invention
Structural schematic diagram including filter unit, as shown in Fig. 2, laser radar system further includes filter unit 60；Filter unit 60 is set
It is placed on the path that light between target object 50 and converting unit 20 is propagated, for filtering out reflect through target object 50 the
Interference light beam in one laser beam.
Wherein, filter unit 60 can filter out the interference signal of other wavelength in addition to first laser light beam, i.e. interference letter
Number will not be received unit 30 detects, the accuracy rate of the detection range of laser radar system can be improved.
Based on the above technical solution, optionally, filter unit 60 includes optical filter.
Based on the above technical solution, optionally, the wave-length coverage for the first laser light beam that transmitting unit 10 emits
For λ1, 760nm≤λ1≤10μm；The wave-length coverage of second laser light beam is λ2, 400nm≤λ2≤760nm。
Wherein, first laser light beam is infrared light, and the wave-length coverage of infrared light is λ1, illustratively, λ1For
1550nm, the infrared light that transmitting unit 10 emits is converted to visible light beam by converting unit 20 in the present embodiment, at this time may be used
Using to the higher detector of visible light beam detection efficient.By this technical solution, can not have to infrared detector can
Detection efficient is improved, save the cost is conducive to commercialization.
Based on the above technical solution, optionally, converting unit 20 includes frequency multiplier.
Wherein, the frequency of the first laser light beam of reflection is made to obtain second laser light beam at multiple increase by frequency multiplier,
Even if the frequency of second laser light beam is equal to the integral multiple of the frequency of first laser light beam.
Based on the above technical solution, optionally, receiving unit 30 includes that reception camera lens and detector (do not show in figure
Out)；Camera lens is received to be used to second laser light beam focusing on detector；Detector is used to second laser light beam being converted to telecommunications
Number.
Wherein, it is scattered since target object surface exists, the first laser light beam being reflected back through target object would generally compare
Compared with diverging, equally the first laser light beam of reflection, which is converted to second laser light beam, by converting unit can also compare diverging, institute
It is focused on detector with receiving camera lens for the second laser light beam of diverging.Second laser light beam is converted to telecommunications by detector
Number.
Based on the above technical solution, optionally, detector includes silicon detector, area array sensor or Charged Couple
Device image sensor.
Wherein, detector includes silicon detector, area array sensor or ccd image sensor etc., this field skill
Art personnel are appreciated that detector includes but is not limited to above-mentioned example, and those skilled in the art can be according to needed for product voluntarily
The type for choosing detector, in the present invention without concrete restriction.
Based on the above technical solution, optionally, transmitting unit 10 include: semiconductor laser, optical fiber laser,
Solid state laser or gas laser.
Wherein, transmitting unit 10 includes: semiconductor laser, optical fiber laser, solid state laser or gas laser etc.,
It will be understood by those skilled in the art that transmitting unit 10 includes but is not limited to above-mentioned example, those skilled in the art can basis
The type that transmitting unit is voluntarily chosen needed for product, in the present invention without concrete restriction.
Based on the above technical solution, optionally, the transmission power of transmitting unit 10 is P, 1W≤P≤100W.
Wherein, the transmission power for increasing transmitting unit 10 can increase the distance of laser radar system and target object, people
Eye is very low for the photosensitive rate of infrared light, therefore the transmission power P for emitting the transmitting unit 10 of infrared light can be very big.This technology
Long-range detection may be implemented by using powerful infrared light in scheme.
Fig. 3 is a kind of flow chart of the distance measuring method of laser radar system provided in an embodiment of the present invention, the laser radar
The distance measuring method of system based on the above embodiment realize by any one laser radar system；
The distance measuring method of laser radar system includes:
S210, transmitting unit is opened, to form first laser light beam；
The first laser light beam reflected through target object is converted to second laser light beam by S220, control converting unit；
S230, second laser light beam is received by receiving unit；
S240, signal processing unit are compared first time and the second time to obtain the time difference, and then according to the time
Difference obtains the distance of laser radar system and target object, wherein emits first laser light beam at the first time for transmitting unit
Time, the second time are the time that receiving unit receives second laser light beam；Or, signal processing unit is according to first laser light beam
Phase difference between second laser light beam obtains the distance of laser radar system and target object.
The technical solution of the present embodiment, the present invention emit first laser light beam by transmitting unit, and first laser light beam shines
Target object back reflection is incident upon to converting unit, the first laser light beam of reflection is converted to second laser light beam by converting unit,
Receiving unit receives second laser light beam, wherein the frequency of first laser light beam is less than second laser light beam, signal processing unit
It will be compared to obtain the time difference with the second time at the first time, and then laser radar system and object obtained according to the time difference
The distance of body, wherein emit the time of first laser light beam for transmitting unit at the first time, the second time was receiving unit reception
The time of second laser light beam, alternatively, signal processing unit is according to the phase between first laser light beam and second laser light beam
Difference obtains the distance of laser radar system and target object, solves in the prior art if can hurt using visible light as light source
The retina of victimization, if using infrared detector, it is at high cost, it is unfavorable for commercialization；And laser transmission power it is too small when,
Detection range will closer problem, realize under the premise of meeting eye-safe, reduce cost, improve detection efficient, simultaneously
Improve the effect of detection range.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of laser radar system characterized by comprising transmitting unit, converting unit, receiving unit and signal processing
Unit；The transmitting unit and the receiving unit are connect with the signal processing unit；
The transmitting unit is for emitting first laser light beam；
The first laser light beam exposes to target object back reflection to the converting unit；The converting unit is used for will be through institute
The first laser light beam for stating target object reflection is converted to second laser light beam；The frequency of the first laser light beam is less than
The frequency of the second laser light beam；
The receiving unit is for receiving the second laser light beam；
The signal processing unit for will at the first time and the second time be compared to obtain the time difference, and then according to it is described when
Between difference obtain the distance of the laser radar system and the target object, wherein the first time is the transmitting unit
Emit the time of the first laser light beam, second time be the receiving unit receive the second laser light beam when
Between；
Or, the signal processing unit is used for according to the phase difference between the first laser light beam and the second laser light beam
Obtain the distance of the laser radar system and the target object.
2. laser radar system according to claim 1, which is characterized in that further include filter unit；
The filter unit is set on the path of the propagation of the light between the target object and the converting unit, for filtering
Except the interference light beam in the first laser light beam reflected through the target object.
3. laser radar system according to claim 2, which is characterized in that the filter unit includes optical filter.
4. laser radar system according to claim 1, which is characterized in that described the first of the transmitting unit transmitting swashs
The wave-length coverage of light light beam is λ1, 760nm≤λ1≤10μm；
The wave-length coverage of the second laser light beam is λ2, 400nm≤λ2≤760nm。
5. laser radar system according to claim 1, which is characterized in that the converting unit includes frequency multiplier.
6. laser radar system according to claim 1, which is characterized in that the receiving unit includes receiving camera lens and spy
Survey device；
The reception camera lens is used to the second laser light beam focusing on the detector；
The detector is used to the second laser light beam being converted to electric signal.
7. laser radar system according to claim 6, which is characterized in that the detector includes: silicon detector, face battle array
Sensor or ccd image sensor.
8. laser radar system according to claim 1, which is characterized in that the transmitting unit includes:
Semiconductor laser, optical fiber laser, solid state laser or gas laser.
9. laser radar system according to claim 4, which is characterized in that the transmission power of the transmitting unit is P, 1W
≤P≤100W。
10. a kind of distance measuring method of laser radar system, which is characterized in that the distance measuring method of the laser radar system is based on power
Benefit requires laser radar system described in any one of 1-9 to realize；
The distance measuring method of the laser radar system includes:
The transmitting unit is opened, to form first laser light beam；
It controls the converting unit and the first laser light beam reflected through the target object is converted into second laser light beam；
The second laser light beam is received by the receiving unit；
The signal processing unit will be compared to obtain the time difference with the second time at the first time, and then according to the time difference
Obtain the distance of the laser radar system and the target object, wherein the first time is transmitting unit transmitting
The time of the first laser light beam, second time are the time that the receiving unit receives the second laser light beam；
Or, the signal processing unit is according to the phase difference acquisition between the first laser light beam and the second laser light beam
The distance of laser radar system and the target object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811541534.XA CN109407108A (en) | 2018-12-17 | 2018-12-17 | A kind of laser radar system and distance measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811541534.XA CN109407108A (en) | 2018-12-17 | 2018-12-17 | A kind of laser radar system and distance measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109407108A true CN109407108A (en) | 2019-03-01 |
Family
ID=65460926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811541534.XA Pending CN109407108A (en) | 2018-12-17 | 2018-12-17 | A kind of laser radar system and distance measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109407108A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884652A (en) * | 2019-03-04 | 2019-06-14 | 光梓信息科技（上海）有限公司 | Pulse laser driver and delay calibration method, laser radar and distance measuring method |
| CN110174676A (en) * | 2019-04-30 | 2019-08-27 | 深圳市速腾聚创科技有限公司 | Distance measuring method, system and the equipment of laser radar |
| CN117849766A (en) * | 2024-03-08 | 2024-04-09 | 常州星宇车灯股份有限公司 | Laser radar system and control method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5847817A (en) * | 1997-01-14 | 1998-12-08 | Mcdonnell Douglas Corporation | Method for extending range and sensitivity of a fiber optic micro-doppler ladar system and apparatus therefor |
| JP2010127839A (en) * | 2008-11-28 | 2010-06-10 | Mitsubishi Electric Corp | Laser radar device |
| CN201876545U (en) * | 2010-09-02 | 2011-06-22 | 淄博职业学院 | Pulse phase type laser distance measuring instrument |
| KR20120043843A (en) * | 2010-10-27 | 2012-05-07 | 한국과학기술원 | The three-dimensional imaging pulsed laser radar system using Geiger-mode avalanche photo-diode focal plane array and Auto-focusing method for the same |
| JP2013113669A (en) * | 2011-11-28 | 2013-06-10 | Mitsubishi Electric Corp | Laser radar device |
| CN104730535A (en) * | 2015-03-20 | 2015-06-24 | 武汉科技大学 | Vehicle-mounted Doppler laser radar distance measuring method |
| CN204964760U (en) * | 2015-09-09 | 2016-01-13 | 中国科学院寒区旱区环境与工程研究所 | Embedded laser rangefinder system |
| CN107884780A (en) * | 2016-09-30 | 2018-04-06 | 比亚迪股份有限公司 | Distance-finding method, laser radar and vehicle |
| CN108008400A (en) * | 2017-11-17 | 2018-05-08 | 合肥安杰特光电科技有限公司 | A kind of precision distance measurement system |
| CN108089192A (en) * | 2017-11-17 | 2018-05-29 | 合肥安杰特光电科技有限公司 | The method that range measurement is carried out using laser |
| CN208000376U (en) * | 2018-03-01 | 2018-10-23 | 深圳市镭神智能系统有限公司 | A kind of mobile lidar |
| CN209640493U (en) * | 2018-12-17 | 2019-11-15 | 北京瑞特森传感科技有限公司 | A kind of laser radar system |
-
2018
- 2018-12-17 CN CN201811541534.XA patent/CN109407108A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5847817A (en) * | 1997-01-14 | 1998-12-08 | Mcdonnell Douglas Corporation | Method for extending range and sensitivity of a fiber optic micro-doppler ladar system and apparatus therefor |
| JP2010127839A (en) * | 2008-11-28 | 2010-06-10 | Mitsubishi Electric Corp | Laser radar device |
| CN201876545U (en) * | 2010-09-02 | 2011-06-22 | 淄博职业学院 | Pulse phase type laser distance measuring instrument |
| KR20120043843A (en) * | 2010-10-27 | 2012-05-07 | 한국과학기술원 | The three-dimensional imaging pulsed laser radar system using Geiger-mode avalanche photo-diode focal plane array and Auto-focusing method for the same |
| JP2013113669A (en) * | 2011-11-28 | 2013-06-10 | Mitsubishi Electric Corp | Laser radar device |
| CN104730535A (en) * | 2015-03-20 | 2015-06-24 | 武汉科技大学 | Vehicle-mounted Doppler laser radar distance measuring method |
| CN204964760U (en) * | 2015-09-09 | 2016-01-13 | 中国科学院寒区旱区环境与工程研究所 | Embedded laser rangefinder system |
| CN107884780A (en) * | 2016-09-30 | 2018-04-06 | 比亚迪股份有限公司 | Distance-finding method, laser radar and vehicle |
| CN108008400A (en) * | 2017-11-17 | 2018-05-08 | 合肥安杰特光电科技有限公司 | A kind of precision distance measurement system |
| CN108089192A (en) * | 2017-11-17 | 2018-05-29 | 合肥安杰特光电科技有限公司 | The method that range measurement is carried out using laser |
| CN208000376U (en) * | 2018-03-01 | 2018-10-23 | 深圳市镭神智能系统有限公司 | A kind of mobile lidar |
| CN209640493U (en) * | 2018-12-17 | 2019-11-15 | 北京瑞特森传感科技有限公司 | A kind of laser radar system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884652A (en) * | 2019-03-04 | 2019-06-14 | 光梓信息科技（上海）有限公司 | Pulse laser driver and delay calibration method, laser radar and distance measuring method |
| CN110174676A (en) * | 2019-04-30 | 2019-08-27 | 深圳市速腾聚创科技有限公司 | Distance measuring method, system and the equipment of laser radar |
| CN110174676B (en) * | 2019-04-30 | 2021-05-14 | 深圳市速腾聚创科技有限公司 | Laser radar ranging method, system and equipment |
| CN117849766A (en) * | 2024-03-08 | 2024-04-09 | 常州星宇车灯股份有限公司 | Laser radar system and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109188397B (en) | Laser transmitter-receiver and laser radar | |
| EP1680687B1 (en) | Detection of an electromagnetic signal | |
| CN109407108A (en) | A kind of laser radar system and distance measuring method | |
| CN106597468B (en) | A kind of dual-mode laser imaging system and imaging method | |
| CN111880194B (en) | Non-field-of-view imaging apparatus and method | |
| CN104155639A (en) | Transmitting and receiving integrated laser radar device | |
| Oh et al. | Development and analysis of a photon-counting three-dimensional imaging laser detection and ranging (LADAR) system | |
| CN209640493U (en) | A kind of laser radar system | |
| KR101145132B1 (en) | The three-dimensional imaging pulsed laser radar system using geiger-mode avalanche photo-diode focal plane array and auto-focusing method for the same | |
| KR20200102900A (en) | Lidar device | |
| JP2020020612A (en) | Distance measuring device, method for measuring distance, program, and mobile body | |
| US10473923B2 (en) | Focal region optical elements for high-performance optical scanners | |
| CN109696684A (en) | Self-correlation laser radar device | |
| CN112346068A (en) | Device and method for improving angular resolution of laser radar | |
| CN113391295B (en) | Laser radar scanning system and device | |
| US20130341486A1 (en) | Apparatus for obtaining 3d information using photodetector array | |
| KR20120069487A (en) | Active optical radar apparatus | |
| US11921238B2 (en) | Convolved augmented range LIDAR nominal area | |
| CN106599668B (en) | A kind of target identities identifying system | |
| Bi et al. | Infrared sensors and ultrasonic sensors | |
| CN106679792A (en) | Detection system | |
| CN210690828U (en) | Laser radar receiving device, laser radar transmitting device and laser radar transmitting system | |
| CN111751828A (en) | Laser radar system | |
| CN110346779B (en) | Measuring method for time channel multiplexing of multi-beam laser radar | |
| CN113064140B (en) | Three-dimensional laser scanning radar device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |