CN208721024U - A kind of two-dimensional surface deformation monitoring system based on microwave interference - Google Patents
A kind of two-dimensional surface deformation monitoring system based on microwave interference Download PDFInfo
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Abstract
The utility model provides a kind of two-dimensional surface deformation monitoring system based on microwave interference, comprising: at least two microwave interference distortion measurement radars, n stable reference point, several target tested points, -- Radar Control System and long-range monitoring platform；Wherein: n >=2；Microwave interference distortion measurement radar and -- Radar Control System communication connection, -- Radar Control System and long-range monitoring platform are connected to the network；Microwave interference distortion measurement radar is used to acquire the deformation quantity data of stable reference point and target tested point and is transferred to -- Radar Control System；-- Radar Control System includes error compensation module, displacement computing module and deformation monitoring module.The utility model is a kind of suitable for side slope, the deformation monitoring of dam, and simple installation, use cost are low, the degree of automation and precision are high, monitoring effect is good, are not easy to be disturbed, and can realize the deformation monitoring system to its STABILITY MONITORING by measuring the deformation component of two-dimensional surface in the horizontal and vertical directions.
Description
Technical field
The utility model relates to a kind of two-dimensional surface deformation monitoring systems, and in particular to a kind of two-dimensional surface based on microwave interference
Deformation monitoring system.
Background technique
In nature and daily life, deformation phenomenon is seen everywhere, and the deformation quantity that object can bear has certain
Range, when its deformation quantity exceed allow range when, it would be possible to catastrophic consequence occurs, as deformation it is excessive caused by:
Landslide, the collapsing of large bridge, skyscraper, large-scale dam etc., these can all lead to the generation of huge disaster.To keep away
Exempt from and reduce life and property loss when disaster occurs, deformation monitoring is just particularly important.
Two-dimensional surface deformation monitoring is by taking slope monitoring as an example, and slope monitoring technology passes through the development of many years, according to monitoring object
Difference, can probably be divided into surface displacement, groundwater pressure variation, Influence of The Blasting Vibration, anchorage stress variation and deep
Portion's displacement is the multiclass monitoring technology such as main monitoring object.Wherein: (1) monitor surface displacement based on monitoring technology history the most
Long, traditional ground displacement technology mainly passes through geodesic method by total station or theodolite to monitoring point coordinate
It is monitored.In recent years, with the fast development of electronic information technology and the mixing together of each subject, a variety of ground displacements
Technology continues to bring out, and such as automates total station monitoring network, laser ranging scanning technique, synthetic aperture radar interferometry skill
Art, global positioning system monitoring technology, digital imagery monitoring technology, GIS-Geographic Information System monitoring technology etc., it is a series of novel
The invention and application of technology provide more convenient effectively means for slope project ground displacement.(2) with ground water pressure
Power is that the monitoring technology of main monitoring object is will drill to beat to be detected and install hydraulic gage to detect underground in side slope body
The regularity of distribution of water.(3) earthquake and monitoring of blasting vibration are then the tests by generating seismic wave to explosion, parse dominant bit
The parameters such as shifting, speed, acceleration, master oscillator frequenc, velocity of wave motion and vibration duration measure the influence journey of explosion side slope
Degree.(4) anchorage stress monitoring be by monitor be laid in slope reinforcement in open-pit mine engineering stream line, the high dependent sensor on anchor pole,
The monitoring calculation to sensing data is converted by the monitoring calculation of sliding force, then calculates the size of landslide sliding force, it is real
The now local High and dangerous slope STABILITY MONITORING early warning to anchoring engineering is applied.This few class monitoring technology is steady in specified conditions or side slope
Certain aspect of qualitative evaluation has unique advantage, but does not have the condition for being generalized to entire side slope comprehensive monitoring.
Again by taking the deformation monitoring of dam as an example: the content of dam safety monitoring includes: deformation monitoring, seepage monitoring, stress
Strain monitoring, temperature detection and environmental monitoring etc..Wherein deformation monitoring and seepage monitoring are emphasis, and deformation monitoring is even more in weight
Weight.Under normal circumstances, the exception of dam is all to first pass through the deformation of dam body to reflect, so for the safety of dam
Need to be listed in first place in monitoring is exactly deformation monitoring.The deformation of dam can be divided into Horizontal Deformation and vertical deformation, in which:
(1) monitoring method of Horizontal Deformation has method of tension wire alignment, collimation line method, method of laser alignment, intersection monitoring method, GPS method and traverse method
Deng.Method of tension wire alignment and GPS method are using more, and cost is relatively low for method of tension wire alignment, easy to operate, but the degree of automation is not high, measurement
Precision and scale selection are related；GPS method the degree of automation is higher, and still, precision is poor, cost is slightly higher.(2) prison of vertical deformation
Survey method has geometric leveling method, static level method, triangulated height method and multipoint displacement meter method etc., and common method has geometrical standard
Method and static level method, wherein geometric leveling method is able to satisfy the detection requirement of most of dam, but can not realize automation；
Static level method precision is high but easily affected by environment.
The IBIS-FM/FL series of products of Italian IDS company are again based on the distortion measurement radar of microwave interference technology
System is based on synthetic aperture imaging algorithm, by the radar host computer of the straight line uniform motion on high-precision sliding rail to observation scene
The radar image of different moments is formed, and the deformation in scene is estimated by the phase change of image sequence, there are one for this method
A little limitations, such as: 1) volume weight is big, and deployment is difficult；2) the strong scattering point in scene is relied on, is measured for scattering weak region
Effect is poor；3) it is easy to be influenced by surface vegetation and rubble；4) two-dimensional surfaces such as dam are unable to measure in horizontal and vertical direction
On deformation component.
The quasi- one kind that provides of the utility model is suitable for the two-dimensional surfaces deformation monitorings such as side slope, dam, is existed by measuring two-dimensional surface
Deformation component on horizontal and vertical direction realizes the deformation monitoring method and system of deformation monitoring purpose.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of suitable for side slope, the deformation monitoring of dam, and installs
It is easy, use cost is low, the degree of automation and precision are high, monitoring effect is good, is not easy to be disturbed, can be existed by measurement two-dimensional surface
Deformation component on horizontal and vertical direction and realize the deformation monitoring system to its STABILITY MONITORING.
In order to solve the above-mentioned technical problem, the utility model uses following technical scheme:
For the understanding and narration convenient for this paper, now make an explanation to following noun:
1, the beam angle range and maximum of microwave interference distortion measurement radar in the utility model radar coverage: are indicated
Region in operating distance.
2, stable reference point: refer to the process that distortion measurement is carried out using microwave interference distortion measurement radar in the utility model
In, deformation quantity is always zero reference point, also referred to as permanent datum, ground control point.
3, coordinate system: coordinate system used herein is three-dimensional system of coordinate, and x/y plane is parallel to the horizontal plane, x-axis and slopes
Vertical section direction is parallel, as shown in Fig. 2.
4, horizontal displacement and vertical displacement: horizontal displacement refers to the displacement in coordinate system x-axis direction, and vertical displacement refers to coordinate system
Displacement on z-axis direction.
The utility model provides a kind of two-dimensional surface deformation monitoring system based on microwave interference, specifically includes:
At least two microwave interference distortion measurement radars, n stable reference point, several target tested points, radar control
System and long-range monitoring platform；Wherein: n >=2；The microwave interference distortion measurement radar and -- Radar Control System communication connection,
The -- Radar Control System and long-range monitoring platform are connected to the network；
The microwave interference distortion measurement radar is for acquiring the deformation quantity data of stable reference point and target tested point simultaneously
It is transferred to -- Radar Control System；
The -- Radar Control System includes error compensation module, displacement computing module and deformation monitoring module: the error
Compensating module is for establishing error compensation model to the deformation quantity data of received stable reference point and to the shape of target tested point
Variable data compensates；The displacement computing module is used for the coordinate system according to setting to the compensated data of target tested point
It is projected, and according to each stable reference point, the location information of target tested point and microwave interference distortion measurement radar and its throwing
Shadow relationship finds out the horizontal displacement of target tested point and vertical displacement and is transferred to long-range monitoring platform；The deformation monitoring mould
Block is used to realize the deformation monitoring to each target tested point according to the horizontal displacement threshold values and vertical displacement threshold values of setting and will prison
Long-range monitoring platform is transferred to when surveying fructufy.
Further,
The error compensation model specifically refers to measuring system deformation monitoring error being divided into zero-mean error and gradual mistake
Difference；The deformation quantity data of stable reference point are then based on, zero-mean error are smoothly removed using time domain, then use least square method
Acquire the gradual error of stable reference point；Then by the gradual error of stable reference point to the measurement data of target tested point into
A kind of compensation model of row compensation and foundation.
Further,
The zero-mean error refers to that measurement error, the gradual error include systematic error and unit distance atmosphere errors.
Further,
The deformation monitoring system further includes several reflection enhancement bodies, and the reflection enhancement body is fixedly connected simultaneously with anchor pole
It is fixed in rock-soil layer by anchor pole；
The reflection enhancement body includes reference point reflection enhancement body and tested point reflection enhancement body, and the reference point reflection increases
Strong body is fixed at steady point reference point；The tested point reflection enhancement body is at tested point.
Further,
The reflection enhancement body is Dihedral Corner Reflectors, trihedral corner reflector or active transponder/reflector, for improving
Measurement point radar reflection or scattering strength.
The utility model also provides the deformation monitoring method of the above-mentioned two-dimensional surface deformation monitoring system based on microwave interference, tool
Body is as follows:
S1, selection stable reference point and target tested point
In microwave interference distortion measurement radar coverage, several targets that selection is located on two-dimensional surface to be monitored are waited for
Measuring point and n stable reference point；The stable reference point is the point that deformation occurs is displaced in entire time of measuring, and steady
Determine number n≤2 of reference point；
And meet | rik-rjk|≥δr, wherein rikAnd rjkArbitrary target tested point i and j is respectively indicated to microwave interference deformation
The distance of radar k, δrIndicate the distance resolution of radar；
Because instrumentation radar has a distance resolution, that is it distance can not differentiate above from too close two
A target, so in order to which reference point is distinguished, it is necessary to meet distance interval greater than resolution ratio.
S2, the deformation quantity for seeking each point
Using at least two microwave interference distortion measurement radars simultaneously to the stable reference point and target tested point of selection
It carries out distortion measurement and acquires deformation quantity data, while deformation quantity data are transferred to -- Radar Control System；
S3, error compensation
-- Radar Control System establishes error compensation model based on the deformation quantity data of stable reference point, supplements mould by error
Type carries out error compensation to the deformation quantity data of target tested point, obtains the deformation quantity Δ l of target tested point；
S4, horizontal displacement and vertical displacement are asked
-- Radar Control System carries out data projection, root according to the coordinate system of its setting to the deformation quantity Δ l of target tested point
According to the location information and its projection relation of each stable reference point, target tested point and microwave interference distortion measurement radar, mesh is found out
Mark horizontal displacement and the vertical displacement of tested point；
S5, deformation monitoring
Horizontal displacement threshold values and vertical displacement threshold values are set in -- Radar Control System, when the horizontal position found out in step S4
It moves and exceeds vertical displacement threshold values beyond horizontal displacement threshold values or vertical displacement, that is, determine the two-dimensional surface occurrence injury, radar control
System signal an alert processed realizes the deformation monitoring to the two-dimensional surface to long-range monitoring platform.
Further,
The error compensation model established in step S3 refers to: by measuring system deformation monitoring error be divided into zero-mean error and
Gradual error；Deformation amount measurement data based on stable reference point smoothly removes zero-mean error using time domain, then using minimum
Square law acquires the gradual error of stable reference point；Then the measurement by the gradual error of stable reference point to target tested point
Data compensate to obtain the deformation quantity Δ l of target tested point；
The zero-mean error refers to that measurement error, the gradual error include systematic error and unit distance atmosphere errors.
Further,
Error compensation model in step S3 specifically refers to:
Wherein: d1-dnIt respectively represents post-compensation of the deformation quantity data of n stable reference point Jing Guo L summation and falls measurement mistake
Data after difference；It is long that L represents time domain window；dmea1i-dmeaniRespectively represent the measurement error of n stable reference point；dsysiIt represents
Systematic error；a(ti) represent unit distance atmosphere errors；r1i-rniN stable reference point is respectively represented to survey to microwave interference deformation
Measure the radial distance of radar；
Based on above-mentioned error compensation model, systematic error d can be calculated using least square methodsysIt is big with unit distance
Gas error a (t)；
It is then based on the systematic error d acquiredsysWith unit distance atmosphere errors a (t), target is compensated according to the following formula
The gradual error of tested point obtains the practical deformation quantity Δ l of target tested point:
Δ l=ddis=(d-dsys-a(t)·r)-dmea
Wherein: d indicates the deformation quantity data for the target tested point that radar measures；The wavelength of λ expression radar emission signal；Indicate phase difference；R is radial distance of the target tested point to instrumentation radar.
The deduction process of above-mentioned error compensation model is as follows:
(1) the deformation quantity d of some stable reference point first is that microwave interference distortion measurement radar calculates according to the following formula
It obtains:
Wherein: λ indicates the wavelength of transmitting signal；D indicates deformation quantity；Indicate phase difference；
The utility model is the distortion measurement method based on microwave interference, and microwave interference distortion measurement radar is to pass through calculating
Deformation phase is extracted in interference between neighbouring sample, and further calculates deformation quantity, therefore microwave interference distortion measurement radar is surveyed
The deformation quantity d of the stable reference point obtained is according to phase differenceIt is calculated；
Its principle is: 1, emitting Broad-band Modulated Signal to object to be measured by radar, receiving antenna receives echo, through mixed
Frequently, process of pulse-compression is filtered and then passed through, the distribution situation of object is obtained；2, radar is to continuously receiving twice
Echo-signal carries out difference, finds out phase difference, and calculate deformation quantity.
Because (2) analyzing the composition of the deformation quantity d of stable reference point, the calculation formula of deformation quantity d is determined:
Deformation quantity d includes monitoring object deformation and deformation error, expression formula are as follows:
D=ddis+derr
In formula: ddisIndicate the deformation of monitoring object, derrIndicate deformation error；
Deformation error derrFurther comprise: measurement error, radar system error and atmosphere errors, it may be assumed that
derr=dmea+dsys+datm
In formula: dmeaIndicate measurement error, dsysIndicate radar system error, datmIndicate atmosphere errors；
According to the characteristic of these errors, measurement error dmeaBelong to zero-mean error, radar system error dsysIt is missed with atmosphere
Poor datmBelong to Slow―varying system error, in which: radar system error dsysIt is with measurement apart from unrelated, and atmosphere errors datmIt is
It is proportional to measurement distance.
Due to that atmosphere can be considered as and be uniformly distributed, be approximately considered atmosphere shadow in entirely measurement environment no significant difference
Loud and radial distance is in a linear relationship, atmosphere errors datmCalculation formula is as follows:
datm(t,rn)=a (t) rn
In formula: rnRepresent tested point to instrumentation radar radial distance；A (t) represents unit distance atmosphere errors；
That is: finally determine that the calculation formula of the deformation quantity d of measurement point is as follows:
D=ddis+derr=ddis+dmea+dsys+a(t)grn
Due to stable reference point in entire time of measuring deformation occurs displacement, it may be assumed that
ddis1=ddis2=L=ddisn=0
Show that the microwave interference distortion measurement d difference of n stable reference point is as follows:
Wherein: dsys1=dsys2=L=dsysn=dsys。
Further, since atmosphere errors and systematic error are gradual errors, and radar sampling rate is much higher than its ramp rate,
So upper within a certain period of time can consider that it is constant, therefore mean value is taken to fall measurement Error Compensation in the time domain, specifically
Method is to choose a length of L of time domain window, final to determine that error compensation model is as follows:
As n >=2, it can be based on above-mentioned error compensation model, systematic error d is calculated using least square methodsysAnd list
Position is apart from atmosphere errors a (t).
Further,
Step S4 specifically comprises the following steps: the deformation quantity Δ l=(Δ x, Δ y, Δ z), the existing measurement that set tested point
Data and bibliography show deformation quantity Δ y very little along the y-axis direction, to measure the deformation of y-axis direction, then need using minimum
Three model machines measure, if Δ y=0, the utility model selection is illustrated (i.e. n=2) to the model of two model machines, if having
It needs, can and so on；According to the measurement data of two radars, following deformation quantity computation model is established:
Wherein: Δ r1With Δ r2The respectively deformation quantity that measures of radar 1 and 2, (x1,y1,z1) and (x2,y2,z2) respectively indicate
Relative coordinate when same measurement point is respectively origin with radar 1 and radar 2；
Acquire as a result, tested point in the horizontal direction with the deformation quantity of vertical direction, it may be assumed that horizontal displacement Δ x and vertical displacement
Δ z:
Wherein:And x1z2≠x2z1。
The utility model has the beneficial effects that
The method and traditional measurement method that the utility model is mentioned are suitable in measurement accuracy, measurement efficiency, lower deployment cost, environment
Answering property etc. has outstanding advantage.Distortion measurement radar uses phase interference techniques, and distortion measurement precision is high；Two radars are set
Standby to cover entire dam or side slope, measurement result is comprehensively accurate, and needs when conventional system monitor large-area region
It is intensive to lay sensor, cause the construction cost of system higher；Use aspect is run in system, distortion measurement radar only needs to safeguard
Two radar host computers, it is convenient to operate, and conventional system generally requires entrance or sensor is laid in contact monitoring region or auxiliary is set
Standby, system building is relatively time-consuming, battery, detection are furthermore replaced in operational process and repair the work of damage device etc. all and will expend compared with
The big time and cost；The conditions such as distortion measurement radar environments are adaptable, be not illuminated by the light, sleet, smog haze influence, can whole day
Wait round-the-clock work.In addition, method provided by the utility model can be simultaneously by the Horizontal Deformation (horizontal position of two-dimensional surface to be measured
Move) and vertical deformation (vertical displacement) measure simultaneously, this will substantially reduce time and the cost of distortion measurement.
The utility model proposes the two-dimensional surface deformation monitoring method and system based on microwave interference, have it is round-the-clock, complete
It when, monitoring sensitivity is high, functional reliability is high, be not illuminated by the light influenced with weather, comprehensive use cost is low and technology maturation etc.
Advantage, measurement accuracy and high degree of automation and the mutation process of deformation quantity can be recorded, can be suitable for side slope,
The STABILITY MONITORING of the two-dimensional surfaces such as dam has good replicability.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.
In the accompanying drawings:
The structural schematic diagram of Fig. 1 the utility model embodiment deformation of slope monitoring system；
Fig. 2 is the utility model embodiment deformation of slope monitoring systematic difference schematic diagram；
Fig. 3 is the reflection enhancement body scheme of installation of the utility model embodiment；
Fig. 4 is the utility model embodiment target tested point data projection schematic diagram；
Fig. 5 is the deformation monitoring method flow diagram of the utility model embodiment；
Fig. 6 is the two radar experimental data analogous diagrams of the utility model embodiment；
Fig. 7 is the result data analogous diagram of the target tested point of the utility model embodiment；
Description of symbols:
101, radar one；102, radar two；θ1、θ2The respectively field angle of radar one, radar two；201-202, stablize ginseng
Examination point；301-303, target tested point；4, side slope to be measured；5, reflection enhancement body；6, anchor pole；7, rock-soil layer；8, radar control system
System；801, error compensation module；802, it is displaced computing module；803, deformation monitoring module；9, long-range monitoring platform.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
Embodiment 1:
As shown in figs. 1-7, the present embodiment provides a kind of deformation of slope monitoring based on microwave interference by taking slope monitoring as an example
The monitoring method of system and the deformation monitoring system.
It includes 2 microwave interference instrumentation radars being arranged in side slope 4 to be measured, i.e. radar that deformation of slope, which monitors service system,
One 101, radar 2 102, further include selected in the investigative range of microwave interference instrumentation radar 2 stable reference points (201,
And 3 target tested points (301,302,303) 202) (position of each point is only to illustrate in Fig. 1)；The stable reference point and mesh
Pass through setting reflection enhancement body 5 at mark tested point, reflection enhancement body 5 includes: that the reference point that is arranged at steady point reference point is anti-
The tested point reflection enhancement body 502 penetrating reinforcement 501 and being arranged at target tested point；Reflection enhancement body 5 is for improving measurement
Point radar reflection or scattering strength, reflection enhancement body 5 are fixed in rock-soil layer 7 by anchor pole 6, the reflection enhancement in the present embodiment
Body 5 selects dihedral angle transmitter, can also select trihedral corner reflector or active transponder/reflection as other preferred embodiments
Device；
The deformation monitoring system of the present embodiment further includes -- Radar Control System 8 and long-range monitoring platform 9；Radar 1, thunder
It is connected to the network respectively with 8 communication connection of -- Radar Control System, -- Radar Control System 8 and long-range monitoring platform 9 up to 2 102.
Radar 1, radar 2 102 are used to acquire the deformation quantity data of stable reference point and target tested point and are transferred to
-- Radar Control System 8；
-- Radar Control System 8 includes error compensation module 801, displacement computing module 802 and deformation monitoring module 803: accidentally
Poor compensating module 801 is for establishing error compensation model to the deformation quantity data of received stable reference point and to target tested point
Deformation quantity data compensate；Computing module 802 is displaced for compensated to target tested point according to the coordinate system of setting
Data are projected, and according to each stable reference point, target tested point and microwave interference distortion measurement radar location information and
Its projection relation finds out the horizontal displacement of target tested point and vertical displacement and is transferred to long-range monitoring platform 9；Deformation monitoring mould
Block 803 is used to realize the deformation monitoring to each target tested point according to the horizontal displacement threshold values and vertical displacement threshold values of setting and will
Monitoring result real-time Transmission gives long-range monitoring platform 9.
The monitoring method of the present embodiment is specific as follows:
Assuming that being that origin establishes coordinate system with radar 1, the coordinate of each radar, stable reference point and target tested point is set
It is as follows:
One 101 coordinate of radar is (0,0,0), and 2 102 coordinate of radar is (10, -50,1)；
The coordinate of two stable reference points is respectively (100,80,115), (140,100,123)；
The coordinate of three target tested points is respectively (120,90,120), (100,90,75), (110,85,100)；
The deformation quantity of stable reference point is 0, and radar sampling frequency is 200Hz, and when measurement is 1 hour a length of；If radar surveying
Standard deviation is 0.01mm.
Based on above-mentioned error compensation model provided by the utility model, it is assumed that the gradual error of the system of radar one is 0.5mm,
The gradual error of radar two system is 0.6mm, and atmosphere unit distance error is that (these parameters are the emulation ginsengs of setting to 1mm/km
Number, is unclear for system, but if finally the two can calibrate for error, illustrate the calibration program be it is capable it
Effectively)；If (Δ x, Δ y, Δ z)=(3mm, 0,1mm) are carried out the deformation quantity Δ l=of tested point according to condition assumed above
Experiment simulation, the simulation result of two radars is as shown in fig. 6, the curve above in Fig. 6 is the measurement data of radar one, below
Curve is the measurement data of radar one.
The level of the 3 target tested points finally acquired according to above-mentioned deformation quantity computation model provided by the utility model
Displacement and vertical displacement data (as shown in Figure 7), and analysis comparison is made with practical deformation quantity, it is as shown in table 1 below:
The practical deformation quantity and measurement deformation quantity comparative analysis table of 1 target tested point of table
By upper table 1 it can be seen that the measurement error value of method provided in this embodiment controls within 0.05%, measure
Precision is high, and is practicable.
It should be noted that the main technical principle of the utility model are as follows:
(1) differential interferometry technology；Radar is by transmitting continuous wave signal, for the echo phase twice in succession of same target point
Position carries out difference, and acquiring phase difference isThus the deformation quantity for finding out target isWherein λ indicates transmitting
The wavelength of signal.It is mainly characterized by extrapolating deformation quantity by phase, and target deformation quantity will have higher precision.
(2) Error Compensation Technology；Error present in measuring system is divided into zero-mean error and gradual error, and is passed through
Time domain smoothly falls zero-mean error compensation, gradual error be divided into systematic error and to apart from relevant atmosphere errors, gradual mistake
Difference is estimated by the way that the method for stable reference point is arranged, and the evaluated error by acquiring compensates, which has very
Good applicability.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (2)
1. a kind of two-dimensional surface deformation monitoring system based on microwave interference, which is characterized in that specifically include:
At least two microwave interference distortion measurement radars, n stable reference point, several target tested points, -- Radar Control System
And long-range monitoring platform, it further include the reference point reflection enhancement body that stable reference point is set, the tested point that tested point is set
Reflection enhancement body；The microwave interference distortion measurement radar and -- Radar Control System communication connection, the -- Radar Control System with
Long-range monitoring platform network connection；The microwave interference distortion measurement radar is used to acquire stable reference point and target tested point
Deformation quantity data are simultaneously transferred to -- Radar Control System；The reference point reflection enhancement body, tested point reflection enhancement body are and anchor pole
It is fixedly connected and passes through anchor pole and be fixed in rock-soil layer；
The point for displacement that the stable reference point is that deformation occurs in entire time of measuring, and the number n of stable reference point
≧2；And meet | rik-rjk|≥δr, wherein rikAnd rjkArbitrary target tested point i and j is respectively indicated to microwave interference deformation radar
The distance of k, δrIndicate the distance resolution of radar；
The -- Radar Control System includes error compensation module, displacement computing module and deformation monitoring module: the error compensation
Module is for establishing error compensation model to the deformation quantity data of received stable reference point and to the deformation quantity of target tested point
Data compensate；The displacement computing module is used to carry out the compensated data of target tested point according to the coordinate system of setting
Projection, and closed according to each stable reference point, the location information of target tested point and microwave interference distortion measurement radar and its projection
System finds out the horizontal displacement of target tested point and vertical displacement and is transferred to long-range monitoring platform；The deformation monitoring module is used
It is tied according to the realization of the horizontal displacement threshold values and vertical displacement threshold values of setting to the deformation monitoring of each target tested point and by monitoring
Long-range monitoring platform is transferred to when fruit.
2. a kind of two-dimensional surface deformation monitoring system based on microwave interference according to claim 1, which is characterized in that
The reflection enhancement body is Dihedral Corner Reflectors, trihedral corner reflector or active transponder/reflector.
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| CN111505634A (en) * | 2020-04-29 | 2020-08-07 | 湖南鼎方量子科技有限公司 | High-precision slope deformation monitoring system and method |
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