CN108089192A - The method that range measurement is carried out using laser - Google Patents
The method that range measurement is carried out using laser Download PDFInfo
- Publication number
- CN108089192A CN108089192A CN201711144859.XA CN201711144859A CN108089192A CN 108089192 A CN108089192 A CN 108089192A CN 201711144859 A CN201711144859 A CN 201711144859A CN 108089192 A CN108089192 A CN 108089192A
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- CN
- China
- Prior art keywords
- laser
- carried out
- phase difference
- range measurement
- distance
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- 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.)
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Classifications
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- 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
Abstract
The invention discloses the methods that range measurement is carried out using laser, comprise the following steps：S1：To objective emission laser, and receive the laser that target is reflected back；S2：The laser received is amplified filtering, and is AD converted processing；S3：The time for emitting laser and the time for receiving reflection laser are carried out asking poor, and the initial distance between transmitting laser point and target is drawn according to the difference；S4：The laser of transmitting and the reflection laser received are subjected to phase bit comparison and draw phase difference；S5：Initial distance is modified according to phase difference to obtain final distance.The method that the present invention carries out range measurement using laser, by phase difference to initial distance amendment, can effectively improve accuracy of detection；And show that laser emitting power can be significantly increased in final distance using phase difference merely, so the present invention is compared with the prior art, have the advantages that precision is high and energy saving.
Description
Technical field
The present invention relates to field of measuring technique, and in particular to the method that range measurement is carried out using laser.
Background technology
Laser ranging is progress ranging using laser as light source.According to the mode of laser work be divided into continuous wave laser and
Pulse laser.The gas lasers such as He-Ne, argon ion, krypton cadmium work in continuous output state, for phase laser distance measurement；
Double heterogeneous gallium arsenide semiconductor lasers, for infrared distance measurement；The solid state lasers such as ruby, neodymium glass, swash for pulsed
Ligh-ranging.Laser range finder is due to the features such as monochromaticjty of laser is good, high directivity, in addition electronic circuit semiconductor transformation integrates
Change, compared with geodimeter, not only day and night operation but also range accuracy can be improved, substantially reduce weight and power consumption, make
The distance for measuring the remote target such as artificial earth satellite, moon comes true.
Existing laser ranging technique often uses impulse method, that is, range measurement is carried out by way of the time difference,
And laser can be scattered by dust when suspended matters in air, so as to reduce the precision of impulse method detecting distance.
The content of the invention
The technical problems to be solved by the invention are existing laser ranging techniques often using impulse method, that is, pass through
The mode of time difference carries out range measurement, and laser can be scattered by dust when suspended matters in air, so as to reduce
The precision of impulse method detecting distance is solved the above problems, and it is an object of the present invention to provide carried out the method for range measurement using laser.
The present invention is achieved through the following technical solutions：
The method that range measurement is carried out using laser, is comprised the following steps：S1：To objective emission laser, and receive target
The laser being reflected back；S2：The laser received is amplified filtering, and is AD converted processing；S3：By emit laser when
Between and receive time of reflection laser and carry out asking poor, and drawn according to the difference emit between laser point and target it is initial away from
From；S4：The laser of transmitting and the reflection laser received are subjected to phase bit comparison and draw phase difference；S5：According to phase difference to first
Beginning distance is modified to obtain final distance.
In the prior art, laser ranging technique is often using impulse method, that is, into row distance by way of the time difference
Measurement, and laser can be scattered by dust when suspended matters in air, so as to reduce the essence of impulse method detecting distance
Degree.The present invention and receives the laser that target is reflected back in application, first to objective emission laser, then by the laser received into
Row amplification filtering, and processing is AD converted, subsequently the time for emitting laser and the time for receiving reflection laser are carried out
It asks poor, and the initial distance between transmitting laser point and target is drawn according to the difference, subsequently by the laser of transmitting and reception
To reflection laser carry out phase bit comparison and draw phase difference, subsequently initial distance is modified to obtain according to phase difference final
Distance.When scattering, phase can't change laser, so by phase difference to initial distance amendment, Ke Yiyou
The raising accuracy of detection of effect；And show that laser emitting power can be significantly increased in final distance using phase difference merely, so this hair
It is bright compared with the prior art, have the advantages that precision is high and energy saving.
Further, the rgb value of the laser uses (255,0,0).
Further, the amplification is amplified using operational amplifier.
Further, the step S3 includes following sub-step：Difference described in S3 is multiplied by the light velocity, is that the difference obtains
Go out to emit the initial distance between laser point and target.
Further, it is further comprising the steps of：S6：When the distance change of phase difference revision is more than threshold value, S1 is performed.
The present invention in application, when phase difference revision distance change be more than threshold value when, that is, think ranging process occur compared with
It is big can not, carry out ranging next time from the beginning at this time, improve the precision of final ranging.
Compared with prior art, the present invention it has the following advantages and advantages：
The method that the present invention carries out range measurement using laser, can be effective by phase difference to initial distance amendment
Improve accuracy of detection；And show that laser emitting power can be significantly increased in final distance using phase difference merely, so phase of the present invention
Than in the prior art, having the advantages that precision is high and energy saving.
Specific embodiment
Understand to make the object, technical solutions and advantages of the present invention clearer, with reference to embodiment, the present invention is made
Further to be described in detail, exemplary embodiment of the invention and its explanation are only used for explaining the present invention, are not intended as to this
The restriction of invention.
Embodiment
The method that the present invention carries out range measurement using laser, the method that range measurement is carried out using laser, including following
Step：S1：To objective emission laser, and receive the laser that target is reflected back；S2：The laser received is amplified filtering,
And it is AD converted processing；S3：The time for emitting laser and the time for receiving reflection laser are carried out asking poor, and according to the difference
It is worth the initial distance between transmitting laser point and target；S4：The laser of transmitting and the reflection laser received are subjected to phase
Bit comparison draws phase difference；S5：Initial distance is modified according to phase difference to obtain final distance.The rgb value of the laser
Using (255,0,0).The amplification is amplified using operational amplifier.The step S3 includes following sub-step：It will be in S3
The difference is multiplied by the light velocity, is that the difference draws the initial distance emitted between laser point and target.It is further comprising the steps of：
S6：When the distance change of phase difference revision is more than threshold value, S1 is performed.
When the present embodiment is implemented, first to objective emission laser, and the laser that target is reflected back is received, then will received
Laser is amplified filtering, and is AD converted processing, subsequently by the time for emitting laser and receive reflection laser when
Between carry out asking poor, and according to the difference draw transmitting laser point and target between initial distance, subsequently by the laser of transmitting
Phase bit comparison is carried out with the reflection laser received and draws phase difference, and subsequently initial distance is modified according to phase difference
To final distance.When scattering, phase can't change laser, so by phase difference to initial distance amendment,
Accuracy of detection can effectively be improved；And show that laser emitting power can be significantly increased in final distance using phase difference merely, institute
With the present invention compared with the prior art, have the advantages that precision is high and energy saving.When the distance change of phase difference revision is more than threshold value
When, that is, think ranging process occur it is larger can not, carry out ranging next time from the beginning at this time, improve final ranging
Precision.
Above-described specific embodiment has carried out the purpose of the present invention, technical solution and advantageous effect further
It is described in detail, it should be understood that the foregoing is merely the specific embodiments of the present invention, is not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (5)
1. the method for range measurement is carried out using laser, which is characterized in that comprise the following steps：
S1：To objective emission laser, and receive the laser that target is reflected back；
S2：The laser received is amplified filtering, and is AD converted processing；
S3：The time for emitting laser and the time for receiving reflection laser are carried out asking poor, and show that transmitting swashs according to the difference
Initial distance between luminous point and target；
S4：The laser of transmitting and the reflection laser received are subjected to phase bit comparison and draw phase difference；
S5：Initial distance is modified according to phase difference to obtain final distance.
2. the method according to claim 1 that range measurement is carried out using laser, which is characterized in that the RGB of the laser
Value uses (255,0,0).
3. the method according to claim 1 that range measurement is carried out using laser, which is characterized in that the amplification is using fortune
Amplifier is calculated to be amplified.
4. the method according to claim 1 that range measurement is carried out using laser, which is characterized in that the step S3 includes
Following sub-step：
Difference described in S3 is multiplied by the light velocity, is that the difference draws the initial distance emitted between laser point and target.
5. the method according to claim 1 that range measurement is carried out using laser, which is characterized in that further include following step
Suddenly：
S6：When the distance change of phase difference revision is more than threshold value, S1 is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711144859.XA CN108089192A (en) | 2017-11-17 | 2017-11-17 | The method that range measurement is carried out using laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711144859.XA CN108089192A (en) | 2017-11-17 | 2017-11-17 | The method that range measurement is carried out using laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108089192A true CN108089192A (en) | 2018-05-29 |
Family
ID=62172529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711144859.XA Withdrawn CN108089192A (en) | 2017-11-17 | 2017-11-17 | The method that range measurement is carried out using laser |
Country Status (1)
| Country | Link |
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| CN (1) | CN108089192A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407108A (en) * | 2018-12-17 | 2019-03-01 | 北京瑞特森传感科技有限公司 | A kind of laser radar system and distance measuring method |
| WO2020206602A1 (en) * | 2019-04-09 | 2020-10-15 | 华为技术有限公司 | Distance measurement method, apparatus and device |
-
2017
- 2017-11-17 CN CN201711144859.XA patent/CN108089192A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407108A (en) * | 2018-12-17 | 2019-03-01 | 北京瑞特森传感科技有限公司 | A kind of laser radar system and distance measuring method |
| WO2020206602A1 (en) * | 2019-04-09 | 2020-10-15 | 华为技术有限公司 | Distance measurement method, apparatus and device |
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20180529 |