CN109471191A - A kind of method and apparatus of airborne gravity measurement - Google Patents
A kind of method and apparatus of airborne gravity measurement Download PDFInfo
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
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Abstract
The present embodiments relate to gravity measurement, disclose a kind of method and apparatus of airborne gravity measurement.The method of the airborne gravity measurement provided in embodiment of the present invention is applied to airborne gravity measurement device, comprising: according to aerial survey course line, obtains the position of tested point, and flies to tested point；In the case where being in relative static conditions with tested point, test block is discharged in tested point, and detect displacement data of the test block in vacuum falling bodies space and time data, wherein vacuum falling bodies are spatially located in airborne gravity measurement device；According to displacement data and time data, the absolute gravity value of tested point is calculated.Embodiment of the present invention allows to quickly and accurately measure the aerial gravity of near-earth, improves the accuracy of airborne gravity measurement.
Description
Technical field
The present embodiments relate to gravity measurement field, in particular to a kind of method and apparatus of airborne gravity measurement.
Background technique
Airborne gravity measurement refers to using aircraft as carrier, with one kind of relative gravity instrument measurement near-earth airborne gravity anomaly
Gravimetric method.Due to using aircraft as carrier carry out gravity measurement so that airborne gravity measurement be suitable for marsh, high mountain,
The roads survey crews such as land and water handover ground are difficult to the region reached.
Airborne gravity measurement obtains the mode of the acceleration of gravity of measurement position at present are as follows: is measured and is wrapped by relative gravity instrument
The total acceleration including acceleration of gravity, carrier movement acceleration and some other disturbance acceleration is included, total acceleration subtracts load
Adding correction value after the value of the acceleration of motion of body can be obtained the acceleration of gravity of the measurement position.
At least there are the following problems in the prior art for inventor's discovery: current airborne gravity measurement generallys use relatively heavy
The mode of power measurement, since relative gravity measurement can only obtain the relative variation of gravity, and can not obtain the absolute value of gravity,
It causes not directly determining by the gravity absolute value of geodetic；And the relative gravity instrument of relative gravity is measured vulnerable to temperature, air pressure
Influence and cause measurement drift problem, cause measurement gravity inaccuracy, measuring speed it is slow.Simultaneously as using opposite
Gravimetric mode needs to subtract the acceleration of motion of carrier when measuring gravity, and the acceleration of motion of carrier (aircraft) at present
It is not capable of measuring very accurate, thus gravimetric precision is caused to can only achieve milligal (mGal) magnitude, can not preferably be
Geodesic survey, earthquake prediction provide accurate gravimetric data.
Summary of the invention
A kind of method and apparatus for being designed to provide airborne gravity measurement of embodiment of the present invention allows to fast
Speed accurately measures the aerial gravity of near-earth, improves the accuracy of airborne gravity measurement.
In order to solve the above technical problems, embodiments of the present invention provide a kind of method of airborne gravity measurement, application
In airborne gravity measurement device, comprising: according to aerial survey course line, obtain the position of tested point, and fly to tested point；With
In the case that tested point is in relative static conditions, test block is discharged in tested point, and detect test block in vacuum falling bodies space
Interior displacement data and time data, wherein vacuum falling bodies are spatially located in airborne gravity measurement device；According to displacement data and
Time data calculate the absolute gravity value of tested point.
Embodiments of the present invention additionally provide a kind of equipment of airborne gravity measurement, comprising: rotor, main body, master control mould
Block and absolute gravity measurement device；Main control module is electrically connected with rotor, absolute gravity measurement device respectively, and rotor, master control mould
Block and absolute gravity measurement device are arranged in main body；Main control module obtains the position of tested point according to aerial survey course line,
And rotor wing rotation is controlled, drive main body to fly to tested point；Main control module is detecting main body with tested point in opposing stationary
In the case where state, the test block in absolute gravity measurement device is discharged in tested point, and it is empty in vacuum falling bodies to detect test block
Interior displacement data and time data, wherein vacuum falling bodies are spatially located in absolute gravity measurement device；Main control module according to
Displacement data and time data calculate the absolute gravity value of tested point.
Embodiment of the present invention in terms of existing technologies, according to pre-set aerial survey course line, get to
The position of measuring point, and the tested point that flies, without manual control, the airborne gravity measurement device flies to tested point, reduces people
Work operation, to accelerate the speed of entire gravity test；Due to during carrying out gravity measurement, the airborne gravity measurement
Device is whole to be in opposing stationary state with tested point, and directly passes through displacement data of the test block in vacuum falling bodies space
With time data, the absolute gravity value of the tested point is calculated, so that the aviation will not be added during carrying out gravity measurement
The acceleration of gravity measuring device itself improves the accuracy of the absolute gravity value of calculating, meanwhile, in entire measurement process
In, all without human intervention, the problem of inaccuracy is measured caused by avoiding because of manual operation.
In addition, obtaining the position of tested point according to aerial survey course line, and fly to before tested point, airborne gravity
The method of measurement further include: prestore the location information of at least one tested point；According to the location information of each tested point, setting boat
Sky measurement course line.By the location information of each tested point, aerial survey can be arranged with distinct principle (such as distance is most short) and navigated
Line, to ensure to meet different measurement demands.
In addition, discharging test block in tested point, and detect displacement data and time of the test block in vacuum falling bodies space
Data specifically include: discharging test block from vacuum falling bodies space in tested point, and open laser interference device；Pass through laser
The displacement data and time data that interference device detection test block generates in vacuum falling bodies space.While discharging test block
Laser interference device is opened, can accurately detect what test block generated in the vacuum falling bodies space by laser interference device
Displacement data and time data.
In addition, after flying to tested point, and before tested point discharges test block, the method for airborne gravity measurement is also
It include: the tilt angle data between acquisition and horizontal plane；According to tilt angle data, the tilt angle with horizontal plane is adjusted,
Keep the airborne gravity measurement device opposing stationary between horizontal plane where tested point on gravity measurement direction.It keeps
The airborne gravity measurement device, with horizontal plane where tested point, can be improved to gravimetric on gravity measurement direction
Accuracy.
In addition, according to displacement data and time data, after the absolute gravity value for calculating tested point, airborne gravity measurement
Method further include: detection aerial survey course line in whether there is unmeasured tested point, if in the presence of, then obtain it is next to
The location information of measuring point, and fly to next tested point, measure the absolute gravity value of next tested point.By detecting whether
There are unmeasured tested points, can voluntarily measure according to course line to each tested point, without being manually configured, further
Reduce artificial operation, improves the efficiency of measurement.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is a kind of idiographic flow schematic diagram of the method for airborne gravity measurement in first embodiment according to the present invention；
Fig. 2 is the interference fringe schematic diagram that laser interference device generates in first embodiment according to the present invention；
Fig. 3 is a kind of idiographic flow schematic diagram of the method for airborne gravity measurement in second embodiment according to the present invention；
Fig. 4 is a kind of concrete structure schematic diagram of the equipment of airborne gravity measurement in third embodiment according to the present invention；
Fig. 5 is a kind of concrete structure schematic diagram of the equipment of airborne gravity measurement in the 4th embodiment according to the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment party of the present invention
In formula, in order to make the reader understand this application better, many technical details are proposed.But even if without these technical details
And various changes and modifications based on the following respective embodiments, the application technical solution claimed also may be implemented.
The first embodiment of the present invention is related to the method for airborne gravity measurement, the method for the airborne gravity measurement is applied to
On airborne gravity measurement device, gravity measurement is carried out by airborne gravity measurement device.The method of the airborne gravity measurement it is specific
Process is as shown in Figure 1.
Step 101: according to aerial survey course line, obtaining the position of tested point, and fly to tested point.
In one concrete implementation, before the position for obtaining tested point, the location information of at least one tested point is prestored；
According to the location information of each tested point, aerial survey course line is set.
Specifically, engineer can be according to actual measurement needs, by the location information of at least one tested point, deposit
In the airborne gravity measurement device, the location information of each tested point may include the latitude and longitude information of the tested point, certainly, also
It can again include the altitude info ination etc. of tested point.Aviation can be set directly according to the latitude and longitude information of each tested point
Gravimetric course line.It is understood that the course line of airborne gravity measurement can be configured according to practical application, example
Such as, the flight path for if desired measuring all tested points is most short, then course line is arranged according to the most short principle of distance, if desired according to survey
The sequence for measuring the label of point carries out gravity measurement, then course line is then configured according to the flag sequence of measurement point.
After airborne gravity measurement course line is provided with, according to measurement demand, obtain on the airborne gravity measurement course line
Tested point location information, and fly according to the route of planning to the position of the tested point.
Step 102: in the case where being in relative static conditions with tested point, discharging test block in tested point, and detect
Displacement data of the test block in vacuum falling bodies space and time data, wherein vacuum falling bodies are spatially located at airborne gravity measurement
In device.
Specifically, which is flown using rotor, and the number of rotor can be one or two
More than a, it is to be understood that multiple rotors can be set, for making the airborne gravity measurement device in specified air position
Steadily hovering, the airborne gravity measurement device in present embodiment use 4 rotors, and 4 rotors are according to square or parallel four
The pattern of side shape is configured.It is, of course, also possible to which rotor is arranged by the way of other rock-steady structures, do not done in present embodiment
Limitation.Wherein, test block is installed in the vacuum falling bodies space, test block can be prism of corner cube.
It also include laser interference device, laser interference dress in the absolute gravity measurement device in one concrete implementation
It sets for emitting laser.During carrying out absolute gravity measurement, test block is discharged from vacuum falling bodies space in tested point,
And open laser interference device；By laser interference device detect the displacement data that is generated in vacuum falling bodies space of test block and
Time data.
Specifically, the beam of laser of laser interference device is radiated on the prism of corner cube of whereabouts, thus in prism of corner cube
The interference fringe that laser interference device can generate when free-falling, displacement when which contains prism of corner cube free-falling
With the function of time change, displacement data and time data when prism of corner cube free-falling thus can be completely measured.This reality
The process that laser interference device generates interference fringe in mode is applied no longer to be repeated herein.
Step 103: according to displacement data and time data, calculating the absolute gravity value of tested point.
Specific introduction is calculated to the process of the absolute gravity value of the tested point below:
For test block during discharging whereabouts, the displacement of measurement is respectively D1, D2 and D3, and corresponding displacement time is
T1, T2 and T3；The interference fringe that laser interference device generates is as shown in Fig. 2, according to movement of falling object equation, it is assumed that in T1
Quarter prism of corner cube speed is V0, then T1 to T2 moment, and time phase difference is (T2-T1), and drop is △ d1(△d1=D2-
D1), similarly, for T1 to the T3 moment, time phase difference is (T3-T1), and drop is △ d2(△d2=D3-D1), wherein △ d1
It can be one or more wavelength Xs (known to the optical maser wavelength of laser interference device transmitting) with △ d2, then T1 to T2 moment can be obtained public
Formula (1):
Similarly, T1 can obtain formula (2) to the T3 moment
Combinatorial formula (1) and formula (2) eliminate V0, acceleration g can be obtained, the specific process for eliminating V0, this embodiment party
Formula repeats no more.
Embodiment of the present invention in terms of existing technologies, according to the aerial survey course line of setting, gets tested point
Position, and the tested point that flies, without manual control, the airborne gravity measurement device flies to tested point, reduces artificial behaviour
Make, to accelerate the speed of entire gravity test；Due to during carrying out gravity measurement, the airborne gravity measurement device
It is whole be in opposing stationary state with tested point, and directly pass through displacement data of the test block in vacuum falling bodies space and when
Between data, the absolute gravity value of the tested point is calculated, so that the airborne gravity will not be added during carrying out gravity measurement
The acceleration of measuring device itself improves the accuracy of the absolute gravity value of calculating, meanwhile, in entire measurement process, all
Without human intervention, the problem of inaccuracy is measured caused by avoiding because of manual operation.
Second embodiment of the present invention is related to a kind of method of airborne gravity measurement.Second embodiment is real to first
The further improvement for applying mode, mainly thes improvement is that: in this second embodiment, after flying to tested point, and
Before tested point discharges test block, the method for airborne gravity measurement further includes that the tilt angle between adjustment and horizontal plane is kept
The airborne gravity measurement device on gravity measurement direction with horizontal plane where tested point.The method of the airborne gravity measurement
Detailed process it is as shown in Figure 3.
Step 201: according to aerial survey course line, obtaining the position of tested point, and fly to tested point.
Step 202: the tilt angle data between acquisition and horizontal plane.
Specifically, tilt detecting device is centered in airborne gravity measurement dress, it is real-time by the tilt detecting device
Detect the airborne gravity device tilt angle between horizontal plane awing, wherein tilt detecting device can at least be set
2 are set, is illustrated by taking two tilt detecting devices as an example in present embodiment, two tilt detecting devices can be set at this
Airborne gravity measurement device different location.
Step 203: according to tilt angle data, the tilt angle of adjustment and horizontal plane keeps the airborne gravity measurement to fill
Set on gravity measurement direction with horizontal plane where the tested point.
Specifically, if two tilt detecting devices are arranged in the different location in the airborne gravity device, two can be passed through
The tilt angle data of a tilt detecting device detection are compared, if two tilt angle data it is identical or level off to it is identical,
Then continue to keep the rotation speed of each rotor, however, it is determined that two tilt angle data are significantly different, then can be by adjusting rotation
The rotation speed of the wing, so that the tilt angle data of two tilt detecting devices output are identical, so that it is guaranteed that the airborne gravity is surveyed
The flight of device held stationary is measured, while being also ensured that the airborne gravity measurement device is to be measured with this on gravity measurement direction
Horizontal plane where point.
If being only provided with a tilt detecting device, the tilt angle data of tilt detecting device detection are obtained, are being examined
The difference for measuring the tilt angle data and predetermined inclination angle-data is greater than preset threshold, then controls the rotation speed of rotor, from
And adjust the tilt angle of the airborne gravity measurement device and horizontal plane, it is ensured that the airborne gravity measurement device is in gravity measurement side
Upwards with the tested point where horizontal plane.
Step 204: in the case where being in relative static conditions with tested point, discharging test block in tested point, and detect
Displacement data of the test block in vacuum falling bodies space and time data, wherein vacuum falling bodies are spatially located at airborne gravity measurement
In device.
Step 205: according to displacement data and time data, calculating the absolute gravity value of tested point.
Step 206: detection whether there is unmeasured tested point in aerial survey course line, if in the presence of thening follow the steps
207, otherwise, terminate gravimetric process.
Specifically, after calculating the absolute gravity value of tested point, the absolute gravity value of the tested point is recorded, and should
Measured point mark is to have surveyed, and avoids the airborne gravity measurement device from repeating to carry out gravity measurement to same tested point, avoids resource
Waste.Therefore, after the absolute gravity value for often having detected a tested point, judging, which whether there is in the aerial survey course line, is not surveyed
The tested point of amount.If it exists, 207 are thened follow the steps.
Step 207: obtain the location information of next tested point, and fly to next tested point, measure it is next to
The absolute gravity value of measuring point.
Specifically, according to the sequence of measurement, the location information of next tested point is obtained, repeats above-mentioned measurement tested point
The step of absolute gravity value, carries out the measurement of absolute gravity value to next tested point.
It should be noted that in step 201, step 204 and step 205 in present embodiment and first embodiment
Step 101, step 102 and step 103 are roughly the same, will not be described in great detail herein.
The method of the airborne gravity measurement provided in present embodiment, by detecting whether there are unmeasured tested point,
Voluntarily each tested point can be measured according to course line, without being manually configured, further reduce artificial operation, mention
The efficiency of high measurement.Meanwhile before carrying out absolute gravity measurement to tested point, according to tilt angle, adjustment and horizontal plane
Tilt angle keeps horizontal plane where the airborne gravity measurement device and tested point, so that it is guaranteed that carrying out absolute gravity survey
The accuracy of amount.
Third embodiment of the invention is related to a kind of equipment of airborne gravity measurement, the equipment packet of the airborne gravity measurement
It includes: rotor 301, main body 302, main control module 303 and absolute gravity measurement device 304.The tool of the equipment of the airborne gravity measurement
Body structure is as shown in Figure 4.
Main control module 303 is electrically connected with rotor 301, absolute gravity measurement device 304 respectively (to be not shown specific in Fig. 4
Connection relationship), and rotor 301, main control module 303 and absolute gravity measurement device 304 are arranged in main body 302；Master control mould
Block 303 obtains the position of tested point according to aerial survey course line, and control rotor 301 rotation, drive main body 302 flight to
Measuring point；Main control module 303 is discharged in the case where detecting that main body 302 and tested point are in relative static conditions in tested point
Test block in absolute gravity measurement device 304, and detect displacement data of the test block in vacuum falling bodies space and time number
According to, wherein vacuum falling bodies are spatially located in absolute gravity measurement device 304；Main control module 303 is according to displacement data and time number
According to calculating the absolute gravity value of tested point.Wherein, which can be prism of corner cube.
By the rotor 301 being arranged in main body 302 in present embodiment, so that the equipment of entire airborne gravity measurement can
It is hovered with realizing, is measured convenient for the gravity aerial to near-earth of absolute gravity measurement device 304 in the sky.
The rotor 301 for being mounted on main body 302 can be one, be also possible to multiple；In order to ensure the survey of entire airborne gravity
The stability of the equipment flight of amount, rotor 301 is at least 2, as shown in figure 4,4 rotors 301 are arranged in main body 302.Together
When, in order to improve the equipment flexibility of entire airborne gravity measurement, rotor 301 and main body 302 can use self-locking type clamp
It is attached, convenient for the number of flexible setting rotor 301.
One in the specific implementation, absolute gravity measurement device 304 includes: vacuum falling bodies space 3041, test block (in Fig. 4
Do not go out) and laser interference device 3042；Test block is located in vacuum falling bodies space 3041, in test block dropping process, master control
Module 303 controls laser interference device 3042, emits laser to test block；Main control module 303 is according to laser interference device 3042
The laser of transmitting obtains displacement data and time data in test block vacuum falling bodies space 3041.
It should be noted that airborne gravity measurement equipment further includes vibration isolating device 305；Vibration isolating device 305
In the lower section of absolute gravity measurement device 304, shaken in test block dropping process for preventing.
It is not difficult to find that present embodiment is system embodiment corresponding with first embodiment, present embodiment can be with
First embodiment is worked in coordination implementation.The relevant technical details mentioned in first embodiment still have in the present embodiment
Effect, in order to reduce repetition, which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in
In first embodiment.
Four embodiment of the invention is related to a kind of equipment of airborne gravity measurement.4th embodiment is implemented to third
The further improvement of mode, mainly thes improvement is that: in four embodiment of the invention, the airborne gravity measurement equipment is also
Including tilt detecting device 306, the specific structure of the equipment of the airborne gravity measurement is as shown in Figure 5.
Tilt detecting device 306 is electrically connected with main control module 303 and (specific connection relationship is not shown in Fig. 5), and tilts
Detection device 306 is arranged in main body；Tilt detecting device 306 obtains the tilt angle data between main body 302 and horizontal plane
And tilt angle data are transmitted to main control module 303；Main control module 303 receives the inclination angle degree that tilt detecting device obtains
According to, and rotor 301 is controlled according to tilt angle data, tilt angle between main body 302 and horizontal plane is adjusted, 302 main bodys are kept
On gravity measurement direction with horizontal plane where tested point.
Tilt detecting device 306 can be inclination sensor, it is to be understood that should select high-precision inclination sensor
Master control as the tilt detecting device 306 in the equipment of airborne gravity measurement, in the tilt detecting device 306 and main body 302
Module 303 is electrically connected, and main control module 303 can obtain the tilt angle data that tilt detecting device 306 detects in real time, can also
To be the tilt angle data for obtaining tilt detecting device 306 when main body 302 hovers over tested point and detecting.
If two tilt detecting devices 306 are arranged in the different location of the airborne gravity device, the judgement of main control module 303 is connect
Whether the difference of the two tilt angle data received is 0 or levels off to 0, if so, main control module 303 stops adjusting rotor
301 rotation speed, otherwise, main control module control the rotation speed of machine rotor 301, so that the main body 302 is in gravity measurement side
Upwards with the tested point horizontal plane.
If being only provided with a tilt detecting device 306, main control module 303 obtains the tilt detecting device 306 detection
Tilt angle data are greater than preset threshold, then master control in the difference for detecting the tilt angle data and predetermined inclination angle-data
Module 303 controls the rotation speed of rotor 301, so as to adjust the tilt angle of the airborne gravity measurement device and horizontal plane, really
Protect the airborne gravity measurement device on gravity measurement direction with place horizontal plane to be measured.
Present embodiment provide airborne gravity measurement equipment, by tilt detecting device, main control module and with master
A set of closed loop feedback system is formed between the rotor of control module electrical connection, allows main control module defeated according to tilt detecting device
Tilt angle data out adjust the rotation speed of rotor, so as to adjust the airborne gravity measurement device on gravity measurement direction
Tilt angle between horizontal plane where tested point is vertical angle, realizes the equipment of airborne gravity measurement in gravity measurement
Accurate positioning on direction substantially increases the accuracy of the device measuring gravity of the airborne gravity measurement.
It will be appreciated by those skilled in the art that implementing the method for the above embodiments is that can pass through
Program is completed to instruct relevant hardware, which is stored in a storage medium, including some instructions are used so that one
A equipment (can be single-chip microcontroller, chip etc.) or processor (processor) execute each embodiment the method for the application
All or part of the steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of method of airborne gravity measurement, which is characterized in that be applied to airborne gravity measurement device, comprising:
According to aerial survey course line, the position of tested point is obtained, and is flown to the tested point；
In the case where being in relative static conditions with the tested point, test block is discharged in the tested point, and described in detection
Displacement data of the test block in vacuum falling bodies space and time data, wherein the vacuum falling bodies are spatially located at the aviation
In gravity measuring device；
According to the displacement data and the time data, the absolute gravity value of the tested point is calculated.
2. the method for airborne gravity measurement according to claim 1, which is characterized in that according to aerial survey course line, obtain
The position of tested point is taken, and is flown to before the tested point, the method for the airborne gravity measurement further include:
Prestore the location information of at least one tested point；
According to the location information of each tested point, the aerial survey course line is set.
3. the method for airborne gravity measurement according to claim 1, which is characterized in that discharge and test in the tested point
Block, and displacement data of the test block in vacuum falling bodies space and time data are detected, it specifically includes:
Test block is discharged from vacuum falling bodies space in the tested point, and opens laser interference device；
By the laser interference device detect displacement data that the test block generates in vacuum falling bodies space and when
Between data.
4. the method for airborne gravity measurement according to claim 3, which is characterized in that flight to the tested point it
Afterwards, and before the tested point discharges test block, the method for the airborne gravity measurement further include:
Tilt angle data between acquisition and horizontal plane；
According to the tilt angle data, the tilt angle of adjustment and the horizontal plane keeps the airborne gravity measurement device
On gravity measurement direction with horizontal plane where the tested point.
5. the method for airborne gravity measurement according to claim 4, which is characterized in that according to the displacement data and institute
Time data are stated, after the absolute gravity value for calculating the tested point, the method for the airborne gravity measurement further include:
It detects with the presence or absence of unmeasured tested point in the aerial survey course line, if in the presence of next tested point is then obtained
Location information, and fly to next tested point, measure the absolute gravity value of next tested point.
6. a kind of equipment of airborne gravity measurement characterized by comprising rotor, main body, main control module and absolute gravity measurement
Device；
The main control module is electrically connected with the rotor, the absolute gravity measurement device respectively, and the rotor, the master control
Module and absolute gravity measurement device setting are on the body；
The main control module obtains the position of tested point according to the measurement course line set in advance, and controls the rotor wing rotation,
The main body is driven to fly to the tested point；
The main control module in the case where detecting the main body and the tested point is in relative static conditions, it is described to
Measuring point discharges the test block in the absolute gravity measurement device, and detects displacement of the test block in vacuum falling bodies space
Data and time data, wherein the vacuum falling bodies are spatially located in the absolute gravity measurement device；
The main control module calculates the absolute gravity value of the tested point according to the displacement data and the time data.
7. the equipment of airborne gravity measurement according to claim 6, which is characterized in that the absolute gravity measurement device packet
It includes: vacuum falling bodies space, test block and laser interference device；
The test block is located in vacuum falling bodies space, in the test block dropping process, the main control module control
The laser interference device, Xiang Suoshu test block emit laser；
The laser that the main control module emits according to the laser interference device obtains in the test block vacuum falling bodies space
The displacement data and the time data.
8. the equipment of airborne gravity measurement according to claim 7, which is characterized in that the airborne gravity measurement equipment is also
Including tilt detecting device；
The tilt detecting device is electrically connected with the main control module, and tilt detecting device setting is on the body；
The tilt detecting device obtains the tilt angle data between the main body and horizontal plane and by the inclination angle degree
According to being transmitted to the main control module；
The main control module receives the tilt angle data that the tilt detecting device obtains, and according to the tilt angle data
The rotor is controlled, tilt angle between the main body and the horizontal plane is adjusted, keeps the main body in gravity measurement direction
Horizontal plane where the upper and described tested point.
9. the equipment of the airborne gravity measurement according to any one of claim 6 to 8, which is characterized in that the aviation weight
Force measuring device further include: vibration isolating device；
The vibration isolating device is located at the lower section of the absolute gravity measurement device, for preventing the test block dropping process
It is middle to shake.
10. the equipment of airborne gravity measurement according to claim 9, which is characterized in that the test block is pyramid Ling Jing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811348976.2A CN109471191B (en) | 2018-11-13 | 2018-11-13 | Aviation gravity measurement method and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811348976.2A CN109471191B (en) | 2018-11-13 | 2018-11-13 | Aviation gravity measurement method and equipment |
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| Publication Number | Publication Date |
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| CN109471191A true CN109471191A (en) | 2019-03-15 |
| CN109471191B CN109471191B (en) | 2021-07-06 |
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| CN201811348976.2A Expired - Fee Related CN109471191B (en) | 2018-11-13 | 2018-11-13 | Aviation gravity measurement method and equipment |
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| CN112462443A (en) * | 2020-11-13 | 2021-03-09 | 中国自然资源航空物探遥感中心 | Synchronous terrain correction method and device for aerial gravity measurement |
| CN113031093A (en) * | 2021-03-09 | 2021-06-25 | 清华大学 | Gravity measurement system, method, apparatus, computer device and storage medium |
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