CN107193050B - A kind of the absolute gravity measurement optical system and method for double freely falling bodies - Google Patents
A kind of the absolute gravity measurement optical system and method for double freely falling bodies Download PDFInfo
- Publication number
- CN107193050B CN107193050B CN201710357374.2A CN201710357374A CN107193050B CN 107193050 B CN107193050 B CN 107193050B CN 201710357374 A CN201710357374 A CN 201710357374A CN 107193050 B CN107193050 B CN 107193050B
- Authority
- CN
- China
- Prior art keywords
- spectroscope
- falling bodies
- prism
- interference
- vacuum chamber
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V7/00—Measuring gravitational fields or waves; Gravimetric prospecting or detecting
- G01V7/02—Details
- G01V7/04—Electric, photoelectric, or magnetic indicating or recording means
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of absolute gravity measurement optical systems of double freely falling bodies, including laser light source, falling bodies mechanism, upper vacuum chamber, lower vacuum chamber and the interferometer being arranged between upper vacuum chamber and lower vacuum chamber；The falling bodies mechanism includes two and identical, corresponding is separately positioned on the indoor upper falling bodies prism of upper and lower two vacuum and lower falling bodies prism；The interferometer includes the first interference system, the second interference system and third interference system；After the laser light source injects interferometer, after the first interference system, the second interference system and third interference system, three interference signals are generated, for calculating absolute gravity true value.The present invention also provides measurement methods corresponding with the system.
Description
Technical field
The present invention relates to especially a kind of absolute gravity measurement optical system of double freely falling bodies, the invention further relates to one
The absolute gravity measurement method of the double freely falling bodies of kind, belongs to high-precision absolute gravity measurement field.
Background technique
Currently, high-precision absolute gravimeter be a kind of light harvesting to begin one's study in the world from the seventies, electricity, computer,
Vacuum technique in detection Vertical ground motion, describes earth's surface mass redistribution, prediction whole world sea in integrated precision instrument
The science such as plane lifting, calibration relative gravity instrument drift, mineral products detection, airmanship and national defense construction field, which have, widely answers
With.Since the 1960s, with the high speed development of deep space exploration and missilery, every field is to high-precision absolute gravity
The requirement of measurement also constantly improves, and countries in the world all increase the investment to absolute gravimeter research.Common at present is absolute
Gravimeter model includes the JILA type absolute gravimeter in the U.S., and the FG5 absolute gravimeter and A10 flow model of Micro-g company are exhausted
To gravimeter, the MPG type absolute gravimeter of Italian IMGC type absolute gravimeter Germany, Russian GABL type absolute gravity
Instrument and the NIM type absolute gravimeter of China.Absolute gravimeter working principle includes freely falling body method, upthrow method etc., is freely fallen
The principle of body method is to determine distance when falling bodies do free-falling in gravitational field using laser interferometer, by rubidium atom
Clock measures the time of free-falling, then according to formulaAcquire the numerical values recited of absolute gravity.Upthrow method is substantially same
Freely falling body method is similar, and different modes is only taken in measuring route, to eliminate vacuum resistance, electrostatic force etc. draws
The systematic error risen.But complicated because shaking the big projectile mechanism of error caused by casting, therefore, common at present is high-precision absolute
What gravimeter largely used is all freely falling body method.
The working principle of free fall type absolute gravimeter is as follows: allow a prism of corner cube as falling bodies in high vacuum from
By falling, using measurements by laser interferometry prism of corner cube distance of fall S, under being measured accordingly using the synchronous clock signal of atomic clock
Time t is fallen, finally, the distance S and time value t that are obtained with least square method fitting actual measurement, add earth tide, air pressure, Ghandler motion
It is corrected Deng items, obtains the measured gravity acceleration value put, wherein distance S is equal to number of interference fringes N multiplied by laser half-wavelength
λ/2, uncertainty are guaranteed by the uncertainty of laser；The uncertainty of free-fall time is not by the true of atomic clock
Fixed degree is guaranteed.Simplified freely falling body distance of fall and the theoretical relationship of time beAt this
In the process, error derives from many aspects, measurement error caused by the vibration including the earth, and falling objects optical center mass center is not overlapped
Bring error, vacuum chamber residual gas molecule is for falling objects inhibition bring error etc..Due to freely falling body
Method is to discharge bracket after falling bodies are promoted to certain height by bracket to the control mode of falling bodies, and falling bodies is allowed to do free-falling
Movement, the drive force source of such falling bodies servo tracking mechanism is just at the vibration source of entire measuring system.Therefore, in falling
System self-vibration in the process is inevitably present, and this vibration will introduce system for the high-precision absolute measurement that precision is 10-8 magnitude
System error, simultaneously, it is contemplated that this error is the coupling generation vibrated with ground, with the difference of measuring point underground structure, coupling
The vibration mode generated afterwards is different, seriously affects application of the absolute gravimeter in mobile observation, presently the most successful shock insulation
Method, " super spring " active isolation systems exactly proposed by Micro-g company.
In addition to the absolute value of acceleration of gravity, gravity gradient value also has very high researching value, often through gravity ladder
Spend instrument measurement.Gravity gradiometer can be divided into gravimeter based on differential accelerometer and based on torque according to the difference of principle
Gravity gradiometer.In view of time-consuming for torque measuring method, stability is poor, and the influence vulnerable to hypsography, so, difference
Accelerometer gravimeter is the instrument of current measurement gravity gradient most common in the world[1].With laser technology and intervening atom
Technology flourishes, and the research and development of laser interference gravity gradiometer also become the core of scholars' research.Invention person
Possess the gravimeter research experience of decades with its team, and cooperated to grind with Institute of Geophosics of China Earthquake Administration in 2012
Chinese First " the earth's surface vertical gradient of gravity measuring system based on laser interferance method " is made.The program is by the vacuum of gravimeter
Chamber is divide into upper part and lower part, and each section all contains a set of falling bodies, bracket and guide rail, passes through gear, rack gear using a motor
Guarantee that two falling bodies that vertical interval is 50cm move up and down vertically simultaneously, moves synchronously so that installation error and foozle institute
Caused by radial force offset, ensured the stability of a whole set of unit.Test result finds the same of former double falling bodies free-fallings
Rigidity and the up rightness of double optical paths between step property, reference point and each optical component etc. are the weights for influencing its measurement accuracy
Want factor[2].However, in order to guarantee that two sets of optical paths are independent of each other completely up and down, two falling bodies are in addition to vertical in this scheme
Direction has distance outer, also there is the nearly gap of 10cm in the horizontal direction, and designer thinks this error to result in calculating
It influences less, to be ignored, if in fact wanting to further increase the precision of instrument, it is necessary to solve the problems, such as this.
In conclusion after consulting pertinent literature and summary and induction the absolute gravity measurement experience of decades, this patent
A kind of new absolute gravity measurement method and absolute gravimeter optical system are proposed, i.e., is connected two individual absolute gravimeters
It connects same and be divided into synchronizing in two upper and lower vacuum chambers and carry out whereabouts measurement, measures the whereabouts between two vacuum chambers
The reference point of distance, two falling bodies distance of falls of measurement is same point, overcomes the stiff problem between each optical component, interferometer
Three kinds of sampling processings are carried out for free-falling campaign, to eliminate error brought by ground vibration, realize high-acruracy survey.
This absolute gravity measurement method can acquire the absolute value and gradient value of acceleration of gravity simultaneously, greatly improve working efficiency.
Bibliography:
[1] present Research [J] the physical prospecting and change of Wu Qiong, Teng Yuntian, Zhang Bing, Zhang Tao worldwide gravimetric gradient former are visited, and 37
(5),2013.
[2] Wu Qiong, Teng Yuntian, Zhang Bing, Guo Youguang are set based on the earth's surface vertical gradient of gravity measuring system of laser interferance method
Meter and test [J] earthquake journal, 38 (5), 2016.
Summary of the invention
The object of the present invention is to provide a kind of double freely falling body absolute gravity measurement methods of laser and its light path systems, improve exhausted
To gravimetric precision, reliability is enhanced.
To achieve the goals above, in a first aspect, the present invention provides a kind of absolute gravity measurement optics of double freely falling bodies
System including laser light source, falling bodies mechanism, upper vacuum chamber, lower vacuum chamber and is arranged between upper vacuum chamber and lower vacuum chamber
Interferometer；
The falling bodies mechanism include two it is identical, corresponding be separately positioned on upper and lower two vacuum it is indoor on fall
Body prism and lower falling bodies prism；
The interferometer includes the first interference system, the second interference system and third interference system；The laser light source is penetrated
After entering interferometer, generated by the first interference system dry for calculating the first of the gravity acceleration value of upper falling bodies prism point
Signal is related to, is generated by the second interference system dry for calculating the second of the absolute gravity acceleration value of lower falling bodies prism point
Signal is related to, is generated by third interference system for calculating the weight between upper falling bodies prism point and lower falling bodies prism point
The third interference signal of power acceleration gradient value.
Preferably, the upper falling bodies prism and lower falling bodies prism are done by the driving of same set of servo control system freely falls
Body movement.
Preferably, first interference system includes the first spectroscope, the second spectroscope, third spectroscope, the 4th light splitting
Mirror, the first reflective mirror, the second reflective mirror, reference prism and the first photelectric receiver, the positional relationship of each element meet below
Light transmission path: laser source issues a laser, and two-beam is divided into after the first spectroscope, and wherein light beam is by the
Incident second spectroscope, light are again divided into two-beam on the second spectroscope surface after one reflecting mirror, and wherein reflected light is through upper true
In empty room after upper falling bodies prism and reference prism reflection, then by the second reflective mirror and the 4th spectroscopical reflection, finally with the
One spectroscopical transmitted light is intersected in third spectroscope, forms interference and is received by the first photelectric receiver；
Second interference system includes the first spectroscope, the 5th spectroscope, the 6th spectroscope, the 7th spectroscope, the 4th
Reflective mirror, reference prism and the second photelectric receiver, the positional relationship of each element meet light transmission path below: passing through institute
Incident 6th spectroscope of another beam in the two-beam being divided into after the first spectroscope is stated, other point after the 6th spectroscope of laser light incident
For two-way, be directly projected on the 7th spectroscope all the way, another way by lower falling bodies prism, reference prism, the 4th reflective mirror and
It is formed and is interfered with transmitted light after 5th spectroscope, received by the second photelectric receiver；
The third interference system includes the 5th spectroscope and third photelectric receiver, and laser is by falling in upper vacuum chamber
The light and be finally intersected in by the light that falling bodies prism under lower vacuum chamber and reference prism reflect that body prism and reference prism reflect
5th spectroscope, and the interference fringe formed on this spectroscope is received by third photoelectric sensor.
Preferably, the reference prism of the interferometer is integral structure, including upper and lower two sub- prisms, and the two optical center
It is overlapped.
Preferably, it is solid to be all made of rigidly connected mode for the laser light source, each spectroscope, each reflective mirror and reference prism
It is fixed.
Second aspect, the present invention also provides a kind of absolute gravity measurement measuring methods of double freely falling bodies, use
Systematic survey absolute gravity acceleration true value described in one side, absolute gravity acceleration true value are installed following formula and are calculated:
Wherein:
gouIt is absolute gravity acceleration true value, gcuIt is the gravity acceleration value of upper falling bodies prism point, gcdIt is lower falling bodies
The gravity acceleration value of prism point, gηGravity between upper falling bodies prism point and lower falling bodies prism point accelerates
Gradient value is spent, above each value is obtained according to corresponding interference signal.
A kind of double freely falling body absolute gravity measurement methods of laser provided by the invention and its light path system, individually by two
Absolute gravimeter is connected to same and is divided into synchronizing in two upper and lower vacuum chambers and carries out whereabouts measurement, measures two vacuum
Distance of fall between room, the reference point of two falling bodies distance of falls of measurement are same point, are overcome rigid between each optical component
Property problem, interferometer carries out three kinds of sampling processings for free-falling campaign, real to eliminate error brought by ground vibration
Existing high-acruracy survey.This absolute gravity measurement method can acquire the absolute value and gradient value of acceleration of gravity simultaneously, mention significantly
High working efficiency.
Detailed description of the invention
Fig. 1 is the structural representation of the absolute gravity measurement optical system of double freely falling bodies provided by the embodiment of the present invention
Figure.
In figure:
The upper vacuum chamber of 1-；Vacuum chamber under 2-；The upper falling bodies prism of 3-；Falling bodies prism under 4-；The first spectroscope of 11-；12- second
Spectroscope；13- third spectroscope；The 4th spectroscope of 14-；The 5th spectroscope of 15-；The 6th spectroscope of 16-；The 7th spectroscope of 17-；
The first reflective mirror of 21-；The second reflective mirror of 22-；23- third reflective mirror；The 4th reflective mirror of 24-；31- reference prism；The first light of 41-
Electric receiver；The second photelectric receiver of 42-；43- third photelectric receiver.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Before describing measuring system and measurement method provided in an embodiment of the present invention, absolute gravity acceleration is first introduced
The calculation formula of true value.
If the true value of the absolute gravity acceleration of somewhere measured point is g on the earth0, measured value gc, when measurement drawn by vibrating
The measurement error entered is Δ g, then
gc=g0+Δg (1)
If two falling bodies are the distance synchronous vertical drops in perpendicular separation h, available two measurement results are fallen from above
The measurement result that bulk measurement obtains is:
gcu=g0u+Δgu (2)
It is by the measurement result that whereabouts bulk measurement obtains:
gcd=g0u+Δgd+ηh (3)
Herein, g0uUpper half absolute gravity true value, gcuAbsolute gravity acceleration value, g are measured for the upper halfcdFor lower half
Portion measures absolute gravity acceleration value, Δ gu、ΔgdRespectively indicate the systematic error that upper and lower part is introduced by measurement, ηhBe by
The gravitational acceleration gradient value of measuring point interval h, η are the gravitational acceleration gradient value of unit length, then ηh=η × h.
Since the reference point of two falling bodies whereabouts measurement distance is same reference point, then
Δgu=Δ gd=Δ g (4)
The measurement result that upper falling bodies measurement obtains is:
gcu=g0u+Δg (5)
The measurement result that whereabouts bulk measurement obtains is:
gcd=g0u+Δg+ηh (6)
Special designing is carried out to optical path, interferometer is placed on to the centre of two falling bodies, reference side and measurement side error superposition,
Then have:
gη=2 Δ g+ ηh (7)
It is obtained by formula (5), (6), (7):
gcu+gcd=2g0u+gη (8)
Thus to obtain the absolute gravity acceleration true value of no vibration interference error:
According to above formula, the embodiment of the invention provides a kind of absolute gravity measurement optical system of double freely falling bodies,
Its optical path refers to Fig. 1, and vacuum chamber is divide into upper part and lower part, a complete phase is respectively set in upper and lower two vacuum chambers 1,2
Same falling bodies prism, i.e., upper falling bodies prism 3 and lower falling bodies prism 4, two falling bodies prism distance H are 100cm, are oppositely arranged.
Two falling bodies prisms in driving mechanism driving falling bodies mechanism do the movement of falling object simultaneously；
The laser light source of laser beam emitting device is divided into two-beam, a branch of incident 6th light splitting after the first spectroscope
Mirror, another light beam incident second spectroscope after the first reflecting mirror；
Two light path principles of corresponding first interference system of upper and lower two vacuum chamber and the second interference system are consistent.
First interference system include the first spectroscope 11, the second spectroscope 12, third spectroscope 13, the 4th spectroscope 14,
First reflective mirror 21, the second reflective mirror 22, reference prism 31 and the first photelectric receiver 41, the positional relationship of each element meet with
Under light transmission path: laser source issue a laser, be divided into two-beam after the first spectroscope 11, wherein light beam
Incident second spectroscope 12, light are again divided into two-beam on 12 surface of the second spectroscope after the first reflecting mirror 21, wherein
Reflected light is after falling bodies prism 3 upper in upper vacuum chamber 1 and reference prism reflection, then passes through the second reflective mirror 22 and the 4th spectroscope
14 reflection is finally intersected in third spectroscope 13 with the transmitted light of the first spectroscope 11, forms interference by the first opto-electronic receiver
Device 41 receives.
Second interference system includes the first spectroscope 11, the 5th spectroscope 15, the 6th spectroscope 16, the 7th spectroscope
17, the 4th reflective mirror 24, reference prism 31 and the second photelectric receiver 42, the positional relationship of each element meet light below and pass
Defeated path: incident 6th spectroscope 16 of another beam in the two-beam being divided into after first spectroscope 11, laser enter
It is not divided into two-way after penetrating the 6th spectroscope 16, is directly projected on the 7th spectroscope 17 all the way, another way passes through lower falling bodies prism
4, it is formed and is interfered with transmitted light after reference prism 31, the 4th reflective mirror 24 and the 5th spectroscope 15, by the second photelectric receiver 42
It receives；
The third interference system includes the 5th spectroscope 15 and third photelectric receiver 43, and laser passes through upper vacuum chamber 1
In upper falling bodies prism 3 and reference prism 31 light reflected and reflected by the lower falling bodies prism 4 of lower vacuum chamber 2 and reference prism 31
Light is finally intersected in the 5th spectroscope 15, and the interference fringe formed on this spectroscope is received by third photelectric receiver 43.
Fig. 1 gives a kind of light channel structure for meeting above-mentioned light transmission path, i.e., the first layer of interferometer from a left side to
Right successively angularly disposed first reflective mirror 21, the second spectroscope 12, third spectroscope 13 and the first photelectric receiver 41.The second layer
Successively angularly disposed the second reflective mirror 22, the 4th spectroscope 14 and third reflective mirror 23 from left to right, wherein third reflective mirror
23 inclined directions are opposite with the second reflective mirror 22 and the 4th spectroscope 14.Reference prism 31 is arranged in third layer.4th layer from a left side to
Right successively angularly disposed the 4th reflective mirror 24 and the 5th spectroscope 15 and third photelectric receiver 43.Layer 5 from left to right according to
Secondary setting the first spectroscope 11, the 6th spectroscope 16, the 7th spectroscope 17 and the second photelectric receiver 42.Each reflection and transmission
Optical circuit path and joint it is as shown in Figure 1.
Laser source, each spectroscope, reflecting mirror and reference prism etc. are rigidly connected in this system, and falling bodies prism is in vacuum chamber
In synchronized by the driving of same set of servo control system and done the movement of falling object, so, the first photelectric receiver 41 and second
No matter the environmental disturbances such as ground vibration suffered by the interference fringe that photelectric receiver 42 receives and air pressure go back in the horizontal direction
It is vertically oriented and keeps identical.
Be overlapped the optical center of two pieces of small reference prisms using special technique, so no matter by which kind of vibration shadow
It rings, the light path and the difference being directly incident between the light path on prism that light is incident on spectroscope after falling bodies and prismatic reflection
Value is held essentially constant, and does not influence system accuracy.
Single drop test can generate three groups of different interference fringes in this system, so acquire three it is different plus
Speed g；First interference mechanism and the second interference mechanism can get gravity acceleration value g1And g2, third interference mechanism can get terraced
Angle value g3；Bring formula intoThe absolute gravity acceleration value g that can be corrected0。
Above to a kind of double freely falling body absolute gravity measurement methods of laser provided by the present invention and its light path system and side
Method is described in detail.Used herein a specific example illustrates the principle and implementation of the invention, above
The explanation of embodiment is merely used to help understand the core idea of the present invention.It should be pointed out that for the common skill of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for art personnel, these change
It is also fallen within the protection scope of the claims of the present invention into modification.
Claims (4)
1. a kind of absolute gravity measurement optical system of double freely falling bodies, which is characterized in that including laser light source, falling bodies mechanism,
Upper vacuum chamber, lower vacuum chamber and the interferometer being arranged between upper vacuum chamber and lower vacuum chamber；
The falling bodies mechanism include two it is identical and it is corresponding be separately positioned on vacuum chamber and lower vacuum it is indoor on fall
Body prism and lower falling bodies prism；
The interferometer includes the first interference system, the second interference system and third interference system；The laser light source is injected dry
After interferometer, believe by the first interference that the first interference system generates the gravity acceleration value for calculating upper falling bodies prism point
Number, believe by the second interference that the second interference system generates the absolute gravity acceleration value for calculating lower falling bodies prism point
Number, it generates by third interference system and adds for calculating the gravity between upper falling bodies prism point and lower falling bodies prism point
The third interference signal of velocity gradient value；
First interference system includes the first spectroscope, the second spectroscope, third spectroscope, the 4th spectroscope, first reflective
Mirror, the second reflective mirror, reference prism and the first photelectric receiver, the positional relationship of each element meet light transmission below road
Diameter: laser light source issues a laser, and two-beam is divided into after the first spectroscope, and wherein light beam passes through the first reflecting mirror
Incident second spectroscope, light are again divided into two-beam on the second spectroscope surface afterwards, and wherein reflected light is through in upper vacuum chamber
After falling bodies prism and reference prism reflection, then by the second reflective mirror and the 4th spectroscopical reflection, finally with the first spectroscope
Transmitted light be intersected in third spectroscope, form interference and received by the first photelectric receiver；
Second interference system includes the first spectroscope, the 5th spectroscope, the 6th spectroscope, the 7th spectroscope, the 4th reflective
Mirror, reference prism and the second photelectric receiver, the positional relationship of each element meet light transmission path below: by described the
Another beam in the two-beam being divided into after one spectroscope incident 6th spectroscope is divided into two after the 6th spectroscope of laser light incident
Road is directly projected to all the way on the 7th spectroscope, and another way passes through lower falling bodies prism, reference prism, the 4th reflective mirror and the 5th
It is formed and is interfered with transmitted light after spectroscope, received by the second photelectric receiver；
The third interference system includes the 5th spectroscope and third photelectric receiver, and laser passes through falling bodies rib upper in upper vacuum chamber
The light and be finally intersected in the 5th by the light that falling bodies prism under lower vacuum chamber and reference prism reflect that mirror and reference prism reflect
Spectroscope, and the interference fringe formed on this spectroscope is received by third photoelectric sensor；
The reference prism of the interferometer is integral structure, including upper and lower two sub- prisms, and the two optical center is overlapped.
2. the absolute gravity measurement optical system of double freely falling bodies according to claim 1, which is characterized in that fallen on described
Body prism and lower falling bodies prism are driven by same set of servo control system does the movement of falling object.
3. the absolute gravity measurement optical system of double freely falling bodies according to claim 1, which is characterized in that the laser
Light source, each spectroscope, each reflective mirror and reference prism are all made of rigidly connected mode and fix.
4. a kind of absolute gravity measurement measuring method of double freely falling bodies, which is characterized in that any using claim 1-3
The systematic survey absolute gravity acceleration true value, absolute gravity acceleration true value are calculated according to following formula:
Wherein:
gouIt is absolute gravity acceleration true value, gcuIt is the gravity acceleration value of upper falling bodies prism point, gcdIt is lower falling bodies prism
The gravity acceleration value of point, gηAcceleration of gravity ladder between upper falling bodies prism point and lower falling bodies prism point
Angle value, above each value are obtained according to corresponding interference signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710357374.2A CN107193050B (en) | 2017-05-19 | 2017-05-19 | A kind of the absolute gravity measurement optical system and method for double freely falling bodies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710357374.2A CN107193050B (en) | 2017-05-19 | 2017-05-19 | A kind of the absolute gravity measurement optical system and method for double freely falling bodies |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107193050A CN107193050A (en) | 2017-09-22 |
| CN107193050B true CN107193050B (en) | 2019-03-05 |
Family
ID=59875225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710357374.2A Active CN107193050B (en) | 2017-05-19 | 2017-05-19 | A kind of the absolute gravity measurement optical system and method for double freely falling bodies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107193050B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001830B (en) * | 2018-05-24 | 2019-10-18 | 中国计量科学研究院 | A kind of device reducing absolute gravimeter falling bodies rotation error based on Inertia Based on Torsion Pendulum Method |
| CN109814165B (en) * | 2019-02-25 | 2020-05-19 | 浙江大学 | Light power cooling miniaturized high-precision optical gravimeter |
| CN114019573B (en) * | 2021-10-14 | 2023-09-26 | 中国地质大学（武汉） | Gravity acceleration measuring device and method based on grid falling method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5461914A (en) * | 1994-03-14 | 1995-10-31 | The Regents Of The University Of California | Optical fiber gravity meter |
| CN103941302A (en) * | 2014-05-15 | 2014-07-23 | 浙江大学 | Double-vacuum cavity type fall control absolute gravity meter and application method |
| CN104199116A (en) * | 2013-09-06 | 2014-12-10 | 中国计量科学研究院 | Method and system for measuring absolute gravity of freely falling body based on double interferometers |
| CN104765075A (en) * | 2015-04-09 | 2015-07-08 | 中国科学院测量与地球物理研究所 | Dual-optical-path testing device for light speed limited effect in absolute gravimeter |
-
2017
- 2017-05-19 CN CN201710357374.2A patent/CN107193050B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5461914A (en) * | 1994-03-14 | 1995-10-31 | The Regents Of The University Of California | Optical fiber gravity meter |
| US5637797A (en) * | 1994-03-14 | 1997-06-10 | The Regents Of The University Of California | Optical fiber gravity meter |
| CN104199116A (en) * | 2013-09-06 | 2014-12-10 | 中国计量科学研究院 | Method and system for measuring absolute gravity of freely falling body based on double interferometers |
| CN103941302A (en) * | 2014-05-15 | 2014-07-23 | 浙江大学 | Double-vacuum cavity type fall control absolute gravity meter and application method |
| CN104765075A (en) * | 2015-04-09 | 2015-07-08 | 中国科学院测量与地球物理研究所 | Dual-optical-path testing device for light speed limited effect in absolute gravimeter |
Non-Patent Citations (2)
| Title |
|---|
| 基于激光干涉法的地表重力垂直梯度测量***设计及试验;吴琼 等;《地震学报》;20160930;第38卷(第5期);第794-802页 |
| 绝对重力仪研制中几种干扰因素的实验研究;张为民 等;《地球物理学进展》;20080831;第23卷(第4期);第1143-1148页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107193050A (en) | 2017-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107193050B (en) | A kind of the absolute gravity measurement optical system and method for double freely falling bodies | |
| CA2252594C (en) | Gravity meter | |
| CN103941302B (en) | Double-vacuum cavity type fall control absolute gravity meter and application method | |
| CN105066991B (en) | Inertia measurement equipment based on cold atom principle of interference | |
| CN103472494A (en) | Sensor and method for measuring gravitational potential three-order differential quotient based on atom interference effect | |
| CN103472495A (en) | Vertical gravity gradient measuring sensor based on atom interference effect | |
| EP3037849B1 (en) | Gradiometer configuration invariant to laser phase noise and sensor rotations | |
| CN203480055U (en) | Geopotential third-order derivative measuring transducer based on atom interference effect | |
| Canuel et al. | The matter-wave laser interferometer gravitation antenna (MIGA): New perspectives for fundamental physics and geosciences | |
| CN203519846U (en) | Vertical gravity gradient measurement sensor based on atomic interference effects | |
| CN106842347B (en) | A kind of measuring system of the full component of array intervening atom gravity gradient tensor | |
| CN103430052A (en) | Absolute gravimetric measurement device by atomic interferometry for geophysical applications particularly for monitoring hydrocarbon reservoirs | |
| CN203881958U (en) | Level gravity gradient measurement sensor based on cold atomic beam interferometer | |
| CN104007480A (en) | Horizontal gravity gradient measuring sensor based on cold atomic beam interferometer | |
| US20140224012A1 (en) | Interferometric Gradiometer Apparatus and Method | |
| CN201654251U (en) | Indoor fixed suspension type free falling body absolute gravimeter | |
| CN107121708B (en) | Absolute gravity measurement system and measurement method | |
| CN110686663B (en) | Two-degree-of-freedom atomic interference gyroscope | |
| Araya et al. | Gravity gradiometer implemented in AUV for detection of seafloor massive sulfides | |
| Vitushkin et al. | Laser displacement interferometers with subnanometer resolution in absolute ballistic gravimeters | |
| RU2754098C1 (en) | Laser space gravity gradiometer | |
| CN112213796B (en) | Absolute gravity measurement method and absolute gravimeter | |
| CN213275992U (en) | Multi-component cold atom gravity gradient measurement system | |
| Brown et al. | Atom interferometric gravity sensor system | |
| Zhang et al. | Test of the uplift of Tibetan Plateau by FG5 absolute gravimeter at Lhasa station |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100015 3rd floor, block m3, No.1 Jiuxianqiao East Road, Chaoyang District, Beijing Patentee after: BEIJING AODI DETECTION INSTRUMENT Co.,Ltd. Patentee after: Zhongdi Zhuang (Beijing) Geological Instrument Co.,Ltd. Patentee after: Guo Youguang Address before: 100015 3rd floor, block m3, No.1 Jiuxianqiao East Road, Chaoyang District, Beijing Patentee before: BEIJING AODI DETECTION INSTRUMENT Co.,Ltd. Patentee before: BEIJING GEOLOGICAL INSTRUMENT FACTORY OF MINISTRY OF GEOLOGY AND MINERAL RESOURCES Patentee before: Guo Youguang |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221129 Address after: 100015 Floor 3, Building M3, No. 1, Jiuxianqiao East Road, Chaoyang District, Beijing Patentee after: BEIJING AODI DETECTION INSTRUMENT Co.,Ltd. Patentee after: Guo Youguang Address before: 100015 3rd floor, block m3, No.1 Jiuxianqiao East Road, Chaoyang District, Beijing Patentee before: BEIJING AODI DETECTION INSTRUMENT Co.,Ltd. Patentee before: Zhongdi Zhuang (Beijing) Geological Instrument Co.,Ltd. Patentee before: Guo Youguang |