CN109901118A - Manual corner reflector for synthetic aperture radar interferometry calibration - Google Patents
Manual corner reflector for synthetic aperture radar interferometry calibration Download PDFInfo
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Abstract
The present invention relates to a kind of manual corner reflectors for synthetic aperture radar interferometry calibration comprising corner reflector and pedestal adjusting device；The pedestal adjusting device is attached with the corner reflector, is configured to carry out multi-direction adjusting to corner reflector；The corner reflector is the trigone wimble structure with collapsible hinge apparatus, and entire corner reflector is folded into after the completion of observation by the hinge apparatus plane of a triangle；The pedestal adjusting device includes through to angle adjustment device, broadwise angle adjustment device, pitch angle regulating device and tripod；The tripod is steel tripod, as the position connecting with ground；The present invention is suitable for the calibration work of the Ground Deformations such as region of no relief surface subsidence, ground fissure monitoring, has the characteristics that detachable, anti-ponding, high-precision, easy to adjust, high reliability, lays the foundation for subsequent development calibration and the micro- deformation monitoring work of earth's surface.
Description
Technical field
Present invention invention is related to measurement and monitoring technical field, more specifically, is related to a kind of for synthetic aperture radar
The manual corner reflector of interferometry calibration.
Background technique
Synthetic aperture radar (SAR) is a kind of imaging radar with high-resolution, can be in natural environment, meteorology
Relatively high-resolution two-dimentional dimensional radar image is obtained in the case that environmental condition is poor.In order to generate radar image, need
Continuous wireless pulse is sent to detect target scene, then receives the echo of each pulse signal, continuous recording thunder
Allow to record from these mutiple antennas position groupings up to echo signal processing, which forms synthetic antenna aperture and allow to create
Build the image than given physical antenna higher resolution.Synthetic aperture radar has not to be illuminated by the light to be realized with limitations such as weather conditions
The characteristics of round-the-clock, round-the-clock earth observation, can effectively identify camouflage, penetrate covering, therefore synthetic aperture radar is
It is successfully applied to Ground Subsidence Monitoring, Geological Hazards Monitoring etc., achieves good application effect.
Interferometer radar refers to the synthetic aperture radar using interferometry technology, also referred to as double antenna SAR or relevant SAR,
It is the product that traditional synthetic aperture radar technique is merged with radio astronomy interference technique, is sent out using radar to target area
Microwave is penetrated, the reflection echo of Target scalar is then received, so that the synthetic aperture radar complex pattern pair of target area imaging is obtained,
If there are coherent conditions between complex pattern pair, synthetic aperture radar complex pattern is to the available interference pattern of conjugate multiplication, according to dry
The phase value for relating to figure obtains the path length difference of microwave in imaging twice, to calculate the landform of objective area, landforms and surface
Minor change, can be used for digital elevation model establish, crustal deformation detection, Ground Subsidence Monitoring and Sudden Geological Hazards monitoring
Etc..
In order to which full-scope safeguards synthetic aperture radar is for the monitoring accuracy of Target scalar, realize for earth's surface miniature deformation into
The effective measurement of row, needs to carry out scale operation to synthetic aperture radar, otherwise can not determine its monitoring accuracy.Calibration master at present
If being realized by the way that canonical reference scaler offer radar cross section reference value is arranged in selected calibration place.Wherein
Corner reflector is the most convenient, important, accurate canonical reference scaler, and the precision and degree of stability of radar cross section are very big
Calibration precision is affected in degree, it is therefore desirable for establishing reasonable, convenient, efficient, high-precision manual corner reflector to improve prison
Survey precision.
Manual corner reflector due to can in calibration region artificial its size of control, structure, shape and mounting means,
Therefore stabilization, clearly amplitude information are shown in diameter radar image, be can be realized and are carried out in Low coherence region
The potentiality of the micro deformation of InSAR technical monitoring earth's surface, are widely used in recent years and develop.Manual corner reflector is pacified
In calibration region, radar incident ray is irradiated on the orthogonal several surfaces of corner reflector, by several secondary reflections, is entered
Penetrating light will reflect back along the incoming road direction in path, form the bright spot of the shapes such as crosshair on the image, bright spot size and
Brightness is one or several resolution cells.Currently, many synthetic aperture radar interferometry units have begun user
Work corner reflector measures urban ground subsidence, great linear engineering microvariations, Landslide Deformation etc., has very wide application prospect.
But manual corner reflector in the prior art in terms of surface subsidence, Sudden Geological Hazards monitoring exist much ask
Topic.Firstly, manual corner reflector in the prior art causes to adjust since lower angular regulating device is using gear type adjustment valve
Reflector angles complex, and the accuracy for adjusting angle is unable to get guarantee, and the adjustment for carrying out angle each time all needs
It wants long time to measure and manual calibration, carries out pitch angle adjustment for different satellites and take time and effort；Secondly as
Traditional lead-covering, aluminum honeycomb, aluminum alloy material corner reflector be not for radar reflection it is ideal, stability is deposited
In some problems, and after corner reflector is after wind and rain, aluminium material is because reflecting properties caused by weathering have very greatly
Weakening, this can also impact reflectivity；Third, current manual's corner reflector due to use full-closed structure, summer
When be easy to cause ponding, and ponding will largely effect on the accuracy of reflector；Finally, currently employed corner reflector is solid
Fixed pattern device can not be moved once being installed, if local environment, which changes, can not also move adjustment, not appointed
What portability is unable to satisfy the feasibility that different zones are carried out with mobile calibration.
Summary of the invention
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide one kind to be used for interfering synthetic aperture radar
The manual corner reflector for measuring calibration is able to solve corner reflector during synthetic aperture radar interferometry and calibrates angle
It is difficult to adjust, the problems such as precision is lower, portability is low, not easy to clean, reflecting surface material is bad；Of the invention is used to synthesize hole
The manual corner reflector of diameter SAR interferometry calibration is suitable for detachable, the anti-ponding, high-precision of region of no relief Ground Subsidence Monitoring
Degree, easy to adjust, high reliability lay the foundation for subsequent development calibration and the micro- deformation monitoring work of earth's surface.
Technical scheme is as follows:
A kind of manual corner reflector for synthetic aperture radar interferometry calibration comprising corner reflector and pedestal tune
Regulating device；The pedestal adjusting device is attached with the corner reflector；The corner reflector is to fill with collapsible hinge
It sets, entire corner reflector is folded into after the completion of observation by each hinge apparatus the plane of a triangle；The corner reflector
Including the first plate, the second plate and third plate.Each plate is mutually perpendicular to two-by-two to form trigone wimble structure and each plate be reflective
Plate, the top of the first plate and the second plate is fixed by buckle when expansion；The buckle is detachable rubber trigone cone
Device is fixed the top of corner reflector when being used to open, prevents bifurcated.
Preferably, first plate and the second plate are the plate at left and right sides of the corner reflector top, wherein each plate
It is used as reflecting surface, the first plate includes the first plate first part and the first plate second part, the first plate first part and first
Plate second part is symmetrical structure, and the first Hinge is arranged between the first plate first part and the first plate second part；The
Two plates include the second plate first part and the second plate second part, and the second plate first part and the second plate second part are symmetrical junction
The second Hinge is arranged between the second plate first part and the second plate second part in structure；
First Hinge includes first part and second part, the first Hinge first part and the first Hinge
It is rotatablely connected between second part, the first Hinge first part connect with the first plate first part, the first Hinge
Two parts are connect with the first plate second part, and the lateral wall of first plate is arranged in the first Hinge；
Second Hinge includes first part and second part, the second Hinge first part and the second Hinge
It is rotatablely connected between second part, the second Hinge first part connect with the second plate first part, the second Hinge
Two parts are connect with the second plate second part, and the lateral wall of first plate is arranged in the second Hinge；
There is third Hinge between first plate and third plate, has the 4th hinge between second plate and third plate
Device；
Third Hinge includes first part and second part, and the second part and third plate of the first plate are closed by third
Page device connection, third Hinge first part connect with the first plate second part, third Hinge second part and the
The connection of three plates, third Hinge first part and third Hinge second part are rotatablely connected, third Hinge first
Part is located at the inner sidewall of the first plate.
4th Hinge includes first part and second part, and the second part and third plate of the second plate are closed by the 4th
Page device connection, the 4th Hinge first part connect with the second plate second part, the 4th Hinge second part and the
The connection of three plates, the 4th Hinge first part and the 4th Hinge second part are rotatablely connected, the 4th Hinge first
Part is located at the inner sidewall of the second plate.
Preferably, first plate, the second plate and third plate are three-decker comprising backboard, silver coating and gold-plated
Matrix grid layer；The backboard of first plate, the second plate and third plate is coating carbon fibre plate；The backboard is respectively provided with silver
Coating is provided with gold-plated matrix grid layer on the silver coating.
Preferably, in the junction of third plate rear end and the first plate and the second plate, it is provided with drainage hole.
Preferably, the gold-plated matrix grid is square grid, the coating carbon fibre plate with a thickness of 0.6mm, institute
State the diameter 2mm of square net in gold-plated matrix grid layer, the spacing 2mm between each square.
Preferably, the edge of each reflector is equipped with does not reflect rubber strip, defines for realizing with atural object around
Segmentation.
Preferably, the pedestal adjusting device includes through to angle adjustment device, broadwise angle adjustment device, pitch angle
Regulating device and tripod, the top setting of the tripod is through to angle adjustment device, broadwise angle adjustment device and pitching
Angle adjustment device；Through affixed, broadwise angle adjustment device and pitch angle to angle adjustment device and broadwise angle adjustment device
Degree regulating device is affixed, and pitch angle regulating device is connect with tripod, and corner reflector is fixed on described through filling to angular adjustment
In setting through to angular adjustment axis top.
Preferably, through to angle adjustment device include through to angular adjustment axis, through to angular adjustment handle, through to angle tune
Save sleeve, sleeve internal baffle, through to angular adjustment fixed screw.Through being provided with gear built in sleeve to angular adjustment sleeve inner
Plate, the sleeve internal baffle arrange in pairs in sleeve, described to be passed through out of sleeve to angular adjustment axis and through to angle
The diameter that adjustment axis is located at the shaft part between two groups of baffles is greater than through the diameter to angular adjustment axis other parts；Through to angle tune
Section sleeve be provided with screw hole, through installing to angular adjustment fixed screw to the screw hole, through to angular adjustment handle and warp
To angular adjustment axis connection, through being rotated in through being carried out into angular adjustment sleeve by angular adjustment handle to angular adjustment axis
It rotates at any angle, after the completion of adjusting, by through being fixed to angular adjustment fixed screw.
Preferably, through further including through to angular adjustment dial and through to angular adjustment pointer to angle adjustment device；
Through to angular adjustment pointer with through to angular adjustment axis connection, through being fixed on sleeve to angular adjustment dial.
Preferably, broadwise angular adjustment sleeve is connected with pitch angle regulating device by welding, outside can
To carry out the angular adjustment of 0-360 degree；Through being connected by welding with weft angle adjustment device to angular adjustment sleeve
Connect, outside can carry out the angular adjustment of 0-360 degree；Pitch angle regulating device, the adjusting of angle are by adjusting broadwise
Angle between angular adjustment sleeve and tripod determines that the adjustable range of angle is 0-180 degree.
Compared with prior art, the manual corner reflector for synthetic aperture radar interferometry calibration of the invention, leads to
It crosses and existing fixed corner reflector is optimized, such that the equipment after optimization is more convenient, accurate service
It works in synthetic aperture radar interferometry, can preferably serve surface subsidence, ground fissure, Sudden Geological Hazards, great
In the earth's surface microvariations measurement of linear engineering, is provided safeguard for urban planning and construction, be suitable for region of no relief Ground Subsidence Monitoring
Detachably, anti-ponding, high-precision, manual corner reflector easy to adjust, high reliability, can be significantly using this corner reflector
Reduction satellite angle regulating time, while there is stronger portability, be suitable for the geology necks such as surface subsidence, ground fissure monitoring
Domain application.Specifically, the manual corner reflector for synthetic aperture radar interferometry calibration of the invention has following excellent
Point:
(1) manual corner reflector of the invention is that have collapsible hinge trigone wimble structure, at left and right sides of top
Hinge is installed among reflecting surface；It is filled by hinge between two reflecting surfaces and the reflecting surface of bottom on top
It sets and is attached, once observation is completed, it will be able to entire corner reflector is folded by a triangle by each hinge apparatus
Plane, reflective portion and tripod and regulating device are all highly susceptible to carrying.
(2) simultaneously because it is that carbon fiber adds composite plating coating that it, which makes material, so very light in weight, easy to carry；By
Tripod and bearing arrangement are used in its underpart, portability is equally very strong, this reflector can be placed into vehicle completely
Boot packing is taken away.
(3) manual corner reflector of the invention constitutes trigone wimble structure by three pieces of orthogonal plates, wherein described
Plate is carbon fiber plate；Due to its special geometry, multiple internal reflex can be generated to incident electromagnetic wave, had strongly
Backward radar cross section (Radar Cross Section RCS).Three blocks of the present invention orthogonal carbon two-by-two
Fiber plate is provided with the unified structure of silvering and gold-plated matrix grid composition, sets on the plane of reflection of the bottom
It is equipped with aperture, in case influence of the high wind to corner reflector is drained or reduced when raining.
(4) it originally solves corner reflector in the prior art and generallys use aluminum alloy material, cause it for the total of light
Reflectivity is lower, especially drenches with rain with the exposing to the weather in the oxidation process of aluminum alloy material and field, total reflectivity meeting
The problem of further decreasing.This invention is using coating carbon fibre as backboard, and light-weight, intensity is big, is unlikely to deform, with a thickness of
0.6mm, the side length of the right-angle side of corner reflector are 0.5m, and spray silvering on the surface layer of backboard, so that its surface reflectivity
Aluminum alloy material before being much higher than.Meanwhile in order to further increase the reflectivity on surface, increases in reflective surface area and plate
Nintaus's square matrix coating, square net diameter 2mm, spacing 2mm, by verification experimental verification, this Facing material structure have compared with
Big Radar Cross Section, reflecting properties are better than pure silvering material, can satisfy the requirement of precise calibration.
(5) simultaneously because the edge zone of corner reflector has influence for the reflection of light, therefore on the side of reflector
What margin zone was equipped with black material does not emit rubber strip, makes it possible to have apparent segmentation boundary with surrounding atural object, convenient for
Reflection characteristic is extracted in the background for being easy to obscure.
(6) with the corner reflector pedestal adjusting device of multidirectional regulatory function；
The position that the present invention is connect with ground is steel tripod structure, and there are three ground fulcrum, each steel feet diameters for tool
It is three layers of cannula structure for 15mm, single-side stand length 1m, there is fixed and flexible knob, therefore height can be adjusted according to demand
Degree.Upper part has through to angle adjustment device, broadwise angle adjustment device and pitch angle regulating device, referring specifically to Fig. 2
It is shown.Wherein through to being bearing arrangement inside angle adjustment device, outside can carry out the angular adjustment of 0-360 degree, effect
Fruit is that corner reflector is allowed to carry out angular adjustment according to warp direction；It is bearing knot inside its broadwise angle adjustment device
Structure, outside can carry out the angular adjustment of 0-360 degree, effect is that corner reflector is allowed to carry out angle according to weft direction
Degree is adjusted；Pitch angle regulating device is mainly the bearing that the pitch angle of corner reflector is adjusted, the adjustable model of angle
Enclosing is 0-180 degree.Angle adjustment device uses carbon fiber as manufacture material, meets the requirements such as light, rigidity is strong
Detailed description of the invention
The advantages of above-mentioned and/or additional aspect of the invention, will be apparent from the description of the embodiment in conjunction with the following figures
Be readily appreciated that, in which:
Fig. 1 is the artificial corner reflection according to the present invention for synthetic aperture radar interferometry calibration
The structural schematic diagram of device.
Fig. 2 is that having for the manual corner reflector according to the present invention for synthetic aperture radar interferometry calibration is multidirectional
The structural schematic diagram of the corner reflector pedestal adjusting device of regulatory function.
Fig. 3 is the manual corner reflector according to the present invention for synthetic aperture radar interferometry calibration through to angle
Regulating device detailed structure view.
Fig. 4 is the broadwise angle of the manual corner reflector according to the present invention for synthetic aperture radar interferometry calibration
Regulating device detailed structure view.
Fig. 5 is the pitch angle tune of the manual corner reflector according to the present invention for synthetic aperture radar interferometry calibration
Regulating device detailed structure view.
Specific embodiment
To better understand the objects, features and advantages of the present invention, below with reference to
The present invention is further described in detail for the drawings and specific embodiments.It should be noted that
In the absence of conflict, the feature in embodiments herein and embodiment can be combined with each other.
Manual corner reflector according to an embodiment of the present invention for synthetic aperture radar interferometry calibration, extremely such as Fig. 1
Shown in Fig. 5 comprising corner reflector 1 and pedestal adjusting device.
The pedestal adjusting device is attached with corner reflector 1, is configured to carry out multi-direction tune to corner reflector
Section.
The corner reflector is the trigone wimble structure with collapsible hinge, as shown in Figure 1.The corner reflector includes the
One plate 11, the second plate 12 and third plate 13.Each plate is mutually perpendicular to two-by-two to form trigone wimble structure, due to its special geometry
Structure can generate multiple internal reflex to incident electromagnetic wave, have strong backward radar cross section (Radar Cross
Section RCS)。
It preferably, is reflector in first plate 11, the second plate 12 and third plate 13.
First plate 11 and the second plate 12 are the plate at left and right sides of the corner reflector top, wherein each plate is made
For reflecting surface, the first plate 11 includes the first plate first part 111 and the first plate second part 112, the first plate first part 111
It is symmetrical structure with the first plate second part 112, is arranged between the first plate first part 111 and the first plate second part 112
First Hinge 113.Second plate 12 includes the second plate first part 121 and the second plate second part 122, the second plate first
Divide and the second plate second part is symmetrical structure, the second hinge is set between the second plate first part and the second plate second part
Device 123.
Preferably, the first Hinge 113 includes first part and second part, the first Hinge first part and the
It being rotatablely connected between one Hinge second part, the first Hinge first part connect with the first plate first part, and first
Hinge second part is connect with the first plate second part, it is preferable that the outer of first plate is arranged in the first Hinge
Side wall.
Preferably, the second Hinge 123 includes first part and second part, the second Hinge first part and the
It being rotatablely connected between two Hinge second parts, the second Hinge first part connect with the second plate first part, and second
Hinge second part is connect with the second plate second part, it is preferable that the outer of first plate is arranged in the second Hinge
Side wall.
There is third Hinge 14 between first plate and third plate, there is the 4th conjunction between second plate and third plate
Page device 15, once observation is completed, so that it may entire corner reflector is folded into the plane of a triangle by hinge apparatus,
Its reflective portion is highly susceptible to carrying.
Preferably, third Hinge 14 includes first part and second part, the second part and third plate of the first plate
It is connected by third Hinge, third Hinge first part connect with the first plate second part, third Hinge
Two parts are connect with third plate, and third Hinge first part and third Hinge second part are rotatablely connected, it is preferable that
Third Hinge first part is located at the inner sidewall of the first plate.
Preferably, the 4th Hinge 15 includes first part and second part, the second part and third plate of the second plate
It is connected by the 4th Hinge, the 4th Hinge first part connect with the second plate second part, the 4th Hinge the
Two parts are connect with third plate, and the 4th Hinge first part and the 4th Hinge second part are rotatablely connected, it is preferable that
4th Hinge first part is located at the inner sidewall of the second plate.
First plate, the second plate and third plate are triangular structure, when expansion described in the first plate and the second plate it is mutual
It connects and the first plate and the second plate connect with third plate respectively, formation trigone wimble structure, the first plate and the second plate when expansion
Top is fixed by buckle 16.First plate, the second plate and third plate are mutually perpendicular to.The buckle has groove, institute
Stating groove includes two parts, and two parts are mutually perpendicular to the top for accommodating the first plate and the second plate, plays fixed effect.
Further, first plate, the second plate and third plate are three-decker comprising backboard, silver coating and plating
Golden matrix grid layer；The backboard of first plate, the second plate and third plate is coating carbon fibre plate；The backboard is respectively provided with
Silvering is provided with gold-plated matrix grid layer, and the company in third plate rear end and the first plate and the second plate on the silver coating
Place is met, drainage hole 17 is provided with, the drainage hole is the aperture that diameter is 3mm, it is preferable that the drainage hole is three rows, in case
Influence of the high wind to corner reflector is drained or reduced when raining.
Preferably, the gold-plated matrix grid 18 is square grid.
Preferably, the coating carbon fibre plate with a thickness of 0.6mm, the side length of the right-angle side of corner reflector is 0.5m.
Coating carbon fibre plate surface layer spray silvering so that its surface reflectivity be much higher than before aluminium alloy material
Matter.Meanwhile in order to further increase the reflectivity on surface, increase gold-plated square matrices coating in reflective surface area.
Preferably, in the gold-plated matrix grid layer square net diameter 2mm, the spacing 2mm between each square,
As shown in Figure 1.By verification experimental verification, this Facing material structure has biggish Radar Cross Section, and reflecting properties want excellent
In pure silvering material, the requirement of precise calibration more can satisfy.
Further, simultaneously because the edge zone of corner reflector has influence for the reflection of light, therefore described
What the edge zone of each reflector was equipped with black material does not emit rubber strip, makes it possible to have apparent segmentation with surrounding atural object
Boundary, convenient for extracting reflection characteristic in unconspicuous background.The pedestal adjusting device is located at the third panel of corner reflector
Downside, with multi-direction regulatory function.
The pedestal adjusting device includes through adjusting to angle adjustment device 2, broadwise angle adjustment device 3, pitch angle
Device 4 and tripod 5.
The tripod 5 is steel tripod, as the position connecting with ground.The tripod includes the first steel
Foot, the second steel feet and third steel feet；Preferably, the diameter of each steel feet is 15mm, single-side stand length 1m.
Preferably, each steel feet is three layers of cannula structure, has fixed and flexible knob, to adjust according to demand
Height according to the present invention for the manual corner reflector of synthetic aperture radar interferometry calibration apart from ground.
Preferably, through to 2 internal structure of angle adjustment device referring to Fig. 3, through including through to angle to angle adjustment device
Adjustment axis 21, through to angular adjustment handle 23, through to angular adjustment sleeve 24, sleeve internal baffle 25, through solid to angular adjustment
Determine screw 26.Through being internally provided with sleeve internal baffle 25 to angular adjustment sleeve 24, the sleeve internal baffle 25 through to
It is arranged in pairs in angular adjustment sleeve 24, it is described through being passed through out of sleeve to angular adjustment axis and through being located to angular adjustment axis 21
The diameter of shaft part between two groups of baffles 25 is greater than through the diameter to 21 other parts of angular adjustment axis.Through to angular adjustment sleeve
It is provided with screw hole, through into the installation to the screw hole of angular adjustment fixed screw 26.Through to angular adjustment handle with through to angle
It spends adjustment axis 21 to connect, through passing through to angular adjustment axis 21 through being rotated in through to angular adjustment sleeve to angular adjustment handle 23
It is rotated at any angle in 24.After the completion of adjusting, by through being fixed to angular adjustment fixed screw 26.
Preferably, through further including through to angular adjustment dial 28 and through to angular adjustment pointer to angle adjustment device
27.Through to angular adjustment pointer 27 with through being connect to angular adjustment axis 21, through being fixed on to angular adjustment dial 28 through to angle
Degree is adjusted on sleeve 24, through being rotated in through into angular adjustment sleeve 24 by angular adjustment handle 23 to angular adjustment axis 21
It is rotated at any angle, by through the pointer 27 on angular adjustment axis 21 and through the angle on angular adjustment sleeve 24
Scale determines that angle before and after rotation, angle can tighten fixed screw 26 after overregulating to fix.Through to angular adjustment
Sleeve 24 is connected with broadwise angle adjustment device 3 by welding, through can be into the outside of angular adjustment sleeve 24
The angular adjustment of row 0-360 degree.
According to an embodiment of the invention, through being 25cm to 24 diameter of angular adjustment sleeve, through running through whole to angular adjustment axis
It is a through being attached by the way of welding with corner reflector through the first end to angular adjustment axis 21 to angular adjustment sleeve.
Preferably, through being provided with supporting plate to the first end of angular adjustment axis, through affixed by supporting plate 29 and third plate to angular adjustment axis.
Preferably, the supporting plate is column structure, wherein being connected through being 10cm to the diameter of angular adjustment axis 21 with corner reflector
The supporting plate diameter connect is 40cm, with increase with the bonding area of corner reflector, thus avoid corner reflector generate it is any rock,
To influence calibration precision.Through to angular adjustment axis, variable diameter is 20cm inside sleeve internal baffle, this makes through to angle tune
Nodal axisn can be rotated at any angle by being rotated in sleeve for angular adjustment handle, and angle before and after rotation can be with
By determining through the angle index on the pointer and sleeve on angular adjustment axis, angle can tighten fixation after overregulating
Screw is fixed.Through being connected by welding with broadwise angle adjustment device to angular adjustment sleeve.It can be with outside it
Carry out the angular adjustment of 0-360 degree.
The top setting of the tripod 5 is through to angle adjustment device 2, broadwise angle adjustment device 3 and pitch angle tune
Regulating device 4.Corner reflector 1 be fixed on it is described through into angle adjustment device 2 through to 21 top of angular adjustment axis, wherein through to
It is linked together by the way of welding between angular adjustment axis 21 and corner reflector 1.Preferably, through to angular adjustment axis 21
Diameter is 10cm, in the end being connected with corner reflector 1, for example, the diameter of supporting plate becomes 40cm, in order to can
Increase with the bonding area of corner reflector 1, thus avoid corner reflector 1 generate it is any rock, to influence calibration precision.
Through to angular adjustment fixed screw 26 be passed through directly pushed up through the screw hole to angular adjustment sleeve through to
Screw locking structure on angular adjustment axis 21, may insure when locked position through to angular adjustment sleeve 24 and warp
Will not be subjected to displacement between angular adjustment axis 21, at the position of pine can by through to 21 pairs of angular adjustment axis through to
Angle is adjusted.
Through the structure to angular adjustment sleeve inner as shown in figure 3, through to angular adjustment sleeve diameter be 25cm, through to
Part of the angular adjustment axis inside sleeve internal baffle, diameter become 20cm, this allows through relying on to angular adjustment axis
Through to angular adjustment handle, through arbitrarily rotating into angular adjustment sleeve around center, and angle before and after rotation can be with
By through on angular adjustment axis through to angular adjustment pointer and through the angle index on angular adjustment sleeve, e.g., through to
Angular adjustment dial determines that angle can tighten fixed screw after overregulating to fix.Through logical to angular adjustment sleeve
The mode for crossing welding is connected with the broadwise angular adjustment axis in broadwise angle adjustment device.
Preferably, through being attached to angular adjustment sleeve and the first end of broadwise angular adjustment axis by welding.It is described
Broadwise angle adjustment device 3 includes broadwise angular adjustment axis 31, broadwise angular adjustment sleeve 32, broadwise angular adjustment fixed screw
33 and broadwise angular adjustment handle 34.
Broadwise angular adjustment sleeve 32 is internally provided with second sleeve internal baffle 35, the broadwise angular adjustment sleeve 32
Internal second sleeve internal baffle 35 arranges in pairs in broadwise angular adjustment sleeve 32, the broadwise angular adjustment axis 31 from
In broadwise angular adjustment sleeve 32 across and broadwise angular adjustment axis 31 be located at the axis two groups of second sleeve internal baffles 35
The diameter of section is greater than the diameter of 31 other parts of broadwise angular adjustment axis.Broadwise angular adjustment sleeve 32 is provided with screw hole, latitude
Into the installation to the screw hole of angular adjustment fixed screw 33.Broadwise angular adjustment handle and broadwise angular adjustment axis connection, latitude
It is rotated at any angle to angular adjustment axis by being rotated in broadwise angular adjustment sleeve for broadwise angular adjustment handle.
After the completion of adjusting, it is fixed by broadwise angular adjustment fixed screw 33.
Preferably, broadwise angle adjustment device further includes broadwise angular adjustment dial 36 and broadwise angular adjustment pointer
37.Broadwise angular adjustment pointer 37 is connect with broadwise angular adjustment axis 31, and broadwise angular adjustment dial 36 is fixed on broadwise angle
Degree is adjusted on sleeve 32, and broadwise angular adjustment axis 31 is rotated in broadwise angular adjustment sleeve by broadwise angular adjustment handle 34
It is rotated at any angle in 32, by the pointer 37 and broadwise angular adjustment sleeve 32 on broadwise angular adjustment axis 31
Angle dial 36 determines that angle before and after rotation, angle can tighten fixed screw after overregulating to fix.
Preferably, referring to fig. 4,32 diameter of broadwise angular adjustment sleeve is 25cm to broadwise angle adjustment device internal structure,
Broadwise angular adjustment axis 31 runs through entire broadwise angular adjustment tube-in-tube structure, the first end of broadwise angular adjustment axis 31 with through to angle
Degree regulating device 2 is attached by the way of welding.Broadwise angular adjustment hand is arranged in the second end of broadwise angular adjustment axis 31
Handle 34.Preferably, 31 diameter of broadwise angular adjustment axis is 10cm, but in gear built in the second sleeve of broadwise angular adjustment sleeve 32
35 inside variable diameter of plate is 20cm, this allows broadwise angular adjustment axis 31 to be rotated in latitude by broadwise angular adjustment handle 34
It is rotated at any angle into angular adjustment sleeve 32, and angle before and after rotation can pass through broadwise angular adjustment axis 31
On pointer 37 and sleeve on angle dial 36 determine that angle can tighten broadwise angular adjustment after overregulating and fix
Screw 34 is fixed.Broadwise angular adjustment sleeve 32 is connected with pitch angle regulating device 4 by welding.It can outside it
To carry out the angular adjustment of 0-360 degree.Broadwise angular adjustment sleeve diameter is 25cm, and broadwise angular adjustment axis is in broadwise angle tune
The part between the second sleeve internal baffle 35 of sleeve is saved, the diameter of broadwise angular adjustment axis becomes 20cm, this makes broadwise
Angular adjustment axis can rely on broadwise angular adjustment handle, arbitrarily rotate in broadwise angular adjustment sleeve around center, and
Angle before and after rotation can pass through the broadwise angle tune on the broadwise angular adjustment pointer and sleeve on broadwise angular adjustment axis
Dial is saved to determine, angle can tighten broadwise angular adjustment fixed screw after overregulating to fix.Broadwise angular adjustment
Sleeve is connected with pitch angle regulating device by welding.
The pitch angle regulating device 4 includes that pitch angle adjusts platform 41, pitch angle adjusts dial 42, pitching
Angular adjustment pointer 43 and pitch angle adjust fixed screw 44, as shown in figure 5, pitch angle regulating device, the tune of angle
Section is determined by adjusting angle between broadwise angular adjustment sleeve and tripod, and the adjustable range of angle is 0-180
Degree, angular dimension are to adjust pointer with dial to determine by pitch angle, and angle can tighten pitch angle after overregulating
Degree adjusts fixed screw and is fixed.Preferably, pitch angle regulating device is as shown in figure 5, the adjusting of its angle is by artificial
The angle between broadwise angular adjustment sleeve and tripod is adjusted to determine, the adjustable range of angle is 0-180 degree, angle
Size is to adjust pointer with dial to determine by pitch angle, and angle can tighten fixed screw after overregulating to consolidate
It is fixed.
The lower part setting first connecting portion of the pitch angle adjusting platform, the first of the first connecting portion and tripod
End connection, the second end of the tripod is as ground fulcrum.
The top setting of the tripod is filled through adjusting to angle adjustment device, broadwise angle adjustment device and pitch angle
It sets, as shown in Figure 2.
Preferably, through weight 22 is arranged to angular adjustment axis lower part, it is preferable that the weight is multiple groups, with anti-according to angle
The weight of emitter carries out counterweight.Preferably, through the weight to angular adjustment axis lower part, each is 1kg, will be anti-according to upper corners
The weight of emitter carries out counterweight, generally will be using 2-3 weight to balance.
Preferably, pitch angle regulating device, broadwise angle adjustment device and through using carbon to angle adjustment device
Fiber meets the requirements such as light, rigidity is strong as manufacture material.
Manual corner reflector of the invention overcomes to be connected using fixed point retaining ring in the prior art, causes to adjust angle ten
Point complexity, and adjust accuracy be unable to get guarantees, each time carry out angle adjusting require for quite a long time with
Complexity；Meanwhile which solve in the prior art using lead-covering and the corner reflector of aluminum honeycomb material for radar reflection
Be not it is ideal, the electromagnetic wave of multiband can not be reflected, and after corner reflector is after wind and rain, aluminium
The reflecting properties of matter can be more much lower, this can also impact reflectivity.In addition, in the invention patent corner reflector middle and lower part
There is hollow out aperture, rainwater can be discharged directly to ground.
The lower part that manual corner reflector of the invention solves corner reflector in the prior art is fixed using two steel columns
In clump, top welds together using three pieces of aluminium masking-outs are orthogonal, without any portability and once
It is installed the problem of can not just being removed.
Manual corner reflector of the invention solves corner reflector in the prior art using lead-covering structure, for light
The total reflectivity of line is lower, especially drenches with rain with the exposing to the weather in the oxidation process of aluminium material and field, total reflectivity
The problem of further decreasing.
Simultaneously because it is that carbon fiber adds composite plating coating that it, which makes material, so very light in weight, easy to carry；Due to it
Lower part uses tripod and bearing arrangement, and portability is equally very strong, this reflector can be placed into the standby of vehicle completely
Case packing is taken away.
Manual corner reflector of the invention can be used in surface subsidence, ground fissure, Sudden Geological Hazards, great linear work
In the measurement of journey.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.Those skilled in the art
It is understood that it can still modify to technical solution documented by previous embodiment, or to its middle part
Divide or all technical features are equivalently replaced；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution originally
Invent the range of each embodiment technical solution.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term " on ", "lower" is base
In orientation or positional relationship shown in the drawings, it is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relatively important
Property.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited,
Term " installation ", " connection ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to removable
Connection is unloaded, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be direct connection, it can also be in
Between medium indirect communication, can be the connection inside two elements.It for the ordinary skill in the art, can be specific
Situation understands the concrete meaning of above-mentioned term in the present invention.In addition, in the description of the present invention, unless separately
It is described, " at least three " are meant that two or more.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of manual corner reflector for synthetic aperture radar interferometry calibration, which is characterized in that it includes corner reflection
Device and pedestal adjusting device；The pedestal adjusting device is attached with the corner reflector；The corner reflector is with folding
Entire corner reflector is folded into the plane of a triangle by stacked hinge apparatus by each hinge apparatus after the completion of observation；Institute
Stating corner reflector includes the first plate, the second plate and third plate；Each plate is mutually perpendicular to two-by-two to form trigone wimble structure and each flat
Plate is reflector, and the top of the first plate and the second plate is fixed by buckle when expansion；The buckle is detachable rubber
Glue triangular pyramid body device, is fixed the top of corner reflector when being used to open, prevents bifurcated.
2. the manual corner reflector for synthetic aperture radar interferometry calibration as described in claim 1, which is characterized in that
First plate and the second plate are the plate at left and right sides of the corner reflector top, wherein each plate is used as reflecting surface,
First plate includes the first plate first part and the first plate second part, and the first plate first part and the first plate second part are symmetrical
The first Hinge is arranged between the first plate first part and the first plate second part in structure；Second plate includes the second plate the
A part and the second plate second part, the second plate first part and the second plate second part are symmetrical structure, in the second plate first
The second Hinge is set between part and the second plate second part；
First Hinge includes first part and second part, the first Hinge first part and the first Hinge second
It is rotatablely connected between part, the first Hinge first part connect with the first plate first part, the first Hinge second
Divide and connect with the first plate second part, the lateral wall of first plate is arranged in the first Hinge；
Second Hinge includes first part and second part, the second Hinge first part and the second Hinge second
It is rotatablely connected between part, the second Hinge first part connect with the second plate first part, the second Hinge second
Divide and connect with the second plate second part, the lateral wall of first plate is arranged in the second Hinge；
There is third Hinge between first plate and third plate, there is the 4th hinge dress between second plate and third plate
It sets；
Third Hinge includes first part and second part, and the second part of the first plate is filled with third plate by third hinge
Connection is set, third Hinge first part connect with the first plate second part, third Hinge second part and third plate
Connection, third Hinge first part and third Hinge second part are rotatablely connected, third Hinge first part
Positioned at the inner sidewall of the first plate；
4th Hinge includes first part and second part, and the second part and third plate of the second plate are filled by the 4th hinge
Connection is set, the 4th Hinge first part connect with the second plate second part, the 4th Hinge second part and third plate
Connection, the 4th Hinge first part and the 4th Hinge second part are rotatablely connected, the 4th Hinge first part
Positioned at the inner sidewall of the second plate.
3. the manual corner reflector for synthetic aperture radar interferometry calibration as claimed in claim 2, which is characterized in that
First plate, the second plate and third plate are three-decker comprising backboard, silver coating and gold-plated matrix grid layer；It is described
The backboard of first plate, the second plate and third plate is coating carbon fibre plate；The backboard is respectively provided with silvering, described silver-plated
Gold-plated matrix grid layer is provided on layer.
4. the manual corner reflector for synthetic aperture radar interferometry calibration as claimed in claim 3, which is characterized in that
In the junction of third plate rear end and the first plate and the second plate, it is provided with drainage hole.
5. the manual corner reflector for synthetic aperture radar interferometry calibration as claimed in claim 4, which is characterized in that
The gold-plated matrix grid is square grid, the coating carbon fibre plate with a thickness of 0.6mm, the gold-plated matrix grid layer
The diameter 2mm of middle square net, the spacing 2mm between each square.
6. the manual corner reflector for synthetic aperture radar interferometry calibration as claimed in claim 5, which is characterized in that
The edge of each reflector, which is equipped with, does not reflect rubber strip, for realizing the clearly segmentation with atural object around.
7. the manual corner reflector for synthetic aperture radar interferometry calibration as claimed in claim 6, which is characterized in that
The pedestal adjusting device includes through to angle adjustment device, broadwise angle adjustment device, pitch angle regulating device and three feet
Frame, the top setting of the tripod is through to angle adjustment device, broadwise angle adjustment device and pitch angle regulating device；Through
Affixed to angle adjustment device and broadwise angle adjustment device, broadwise angle adjustment device and pitch angle regulating device are affixed,
Pitch angle regulating device is connect with tripod, corner reflector be fixed on it is described through into angle adjustment device through to angle tune
Nodal axisn top.
8. the manual corner reflector for synthetic aperture radar interferometry calibration as claimed in claim 7, which is characterized in that
Through to angle adjustment device include through to angular adjustment axis, through to angular adjustment handle, through to built in angular adjustment sleeve, sleeve
Baffle, through to angular adjustment fixed screw.Through being provided with sleeve internal baffle to angular adjustment sleeve inner, built in the sleeve
Baffle arranges in pairs in sleeve, it is described passed through out of sleeve to angular adjustment axis and through to angular adjustment axle position in two groups of gears
The diameter of shaft part between plate is greater than through the diameter to angular adjustment axis other parts；Through being provided with screw to angular adjustment sleeve
Hole, through installing to angular adjustment fixed screw to the screw hole, through to angular adjustment handle with through to angular adjustment axis connection,
Through being rotated at any angle by being rotated in for angular adjustment handle into angular adjustment sleeve to angular adjustment axis, adjust
After the completion of section, by through being fixed to angular adjustment fixed screw.
9. the manual corner reflector for synthetic aperture radar interferometry calibration as claimed in claim 8, which is characterized in that
Through further including through to angular adjustment dial and through to angular adjustment pointer to angle adjustment device；Through to angular adjustment pointer
With through to angular adjustment axis connection, through being fixed on sleeve to angular adjustment dial.
10. the manual corner reflector for synthetic aperture radar interferometry calibration, feature exist as claimed in claim 9
In, broadwise angular adjustment sleeve is connected with pitch angle regulating device by welding, outside can carry out 0-360 degree
Angular adjustment；Through being connected by welding with weft angle adjustment device to angular adjustment sleeve, outside can be with
Carry out the angular adjustment of 0-360 degree；Pitch angle regulating device, the adjusting of angle be by adjusting broadwise angular adjustment sleeve with
Angle between tripod determines that the adjustable range of angle is 0-180 degree.
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| CN201910233462.0A CN109901118B (en) | 2019-03-26 | 2019-03-26 | Artificial corner reflector for synthetic aperture radar interferometry calibration |
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| CN201910233462.0A CN109901118B (en) | 2019-03-26 | 2019-03-26 | Artificial corner reflector for synthetic aperture radar interferometry calibration |
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| CN110824435A (en) * | 2019-11-13 | 2020-02-21 | 北京环境特性研究所 | Water accumulation preventing corner reflector and mounting method thereof |
| WO2021083853A1 (en) * | 2019-10-28 | 2021-05-06 | Geopartner Inspections A/S | System for use in determining the change in elevation and/or lateral displacement of a geographic location over time, and a link for such a system |
| CN113466846A (en) * | 2021-06-10 | 2021-10-01 | 上海铁路北斗测量工程技术有限公司 | Migration monitoring method and system for high-speed railway bridge |
| CN113640748A (en) * | 2021-08-13 | 2021-11-12 | 西南大学 | Low-operation-maintenance modular corner reflector suitable for complex mountain area |
| CN116008988A (en) * | 2023-02-24 | 2023-04-25 | 中国科学院空天信息创新研究院 | Three-face angle passive scaler for quantitative remote sensing |
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| CN116008988A (en) * | 2023-02-24 | 2023-04-25 | 中国科学院空天信息创新研究院 | Three-face angle passive scaler for quantitative remote sensing |
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