CN214375263U - Miniaturized millimeter-scale precision bidirectional flat-panel radar corner reflector - Google Patents
Miniaturized millimeter-scale precision bidirectional flat-panel radar corner reflector Download PDFInfo
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- CN214375263U CN214375263U CN202023275569.9U CN202023275569U CN214375263U CN 214375263 U CN214375263 U CN 214375263U CN 202023275569 U CN202023275569 U CN 202023275569U CN 214375263 U CN214375263 U CN 214375263U
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- corner reflector
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- electromagnetic wave
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- reflector
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Abstract
The utility model discloses a two-way dull and stereotyped radar corner reflector of miniaturized millimeter level precision, it is a plurality of including the galvanized screw pole, the lower extreme of galvanized screw pole links to each other with the concrete foundation, the upper end and the horizontal support panel of galvanized screw pole link to each other, be provided with the copper-plated cone nut who is used for adjusting horizontal support panel on the every galvanized screw pole, be provided with two triangle-shaped mounting holes that run through and become central symmetry on the horizontal support panel, be provided with the reflector of three triangular pyramid shapes at the bottom of going in every triangle-shaped mounting hole, every single flux corner reflector constitutes by three electromagnetic wave reflection panel that are three triangular shape, be provided with the outlet that is used for discharging the inside ponding of reflector on one side of its waist panel. The corner reflector is small in size, convenient to carry and low in cost, the monitoring precision can reach the magnitude of 1mm, and errors caused by SCR in phase interference and deformation signals can be effectively reduced.
Description
Technical Field
The utility model relates to a monitoring facilities technical field, in particular to two-way dull and stereotyped radar corner reflector of miniaturized millimeter level precision.
Background
In recent years, synthetic aperture radar interferometry (InSAR) technology is gradually applied, and becomes an important geodetic measurement technology for accurately observing ground displacement and deformation. The satellite-borne synthetic aperture radar has the capability of remote sensing imaging with high precision, all weather, all time and large area, thereby playing an important role in the fields of forestry, geology, ocean, hydrology, agriculture, military reconnaissance, mapping and surveying and mapping and the like. A number of passive and active devices are typically deployed within the calibration field to perform radiometric calibration and geometric correction of the SAR image. The corner reflector has a relatively stable, large radar cross-sectional area and exhibits a 3db beamwidth independent of wavelength and size, and therefore, it becomes a common passive scaling device in SAR broadray scaling. The corner reflector can be used as a reference point target for SAR image Fourier transform calibration and can also be used as a ground control point for carrying out SAR image set geometric correction.
Because the artificial corner reflector can provide a high signal-to-noise ratio (SCR), the artificial corner reflector is often applied to the radiation calibration of a monitoring area with low coherent target density to form a CR-InSAR system for deformation measurement. The size of the radar reflector is mainly dependent on the radar wavelength, the resolution and the accuracy of the deformation to be monitored. However, the conventional corner reflector is large in size, heavy and inconvenient to carry, and quick deployment, quick installation and regular maintenance are difficult to realize for field long-term fixed-point observation. Moreover, the large volume angle reflection requires a large area of infrastructure, which is very unsuitable for a covered dam, and this causes limitations in its application, and the cost becomes high as the volume increases.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a two-way dull and stereotyped radar corner reflector of miniaturized millimeter level precision. The reflector is mainly used for detecting radar satellite signals in an X wave band. On one hand, the high-precision satellite data has shorter wavelength, so that the application of a miniaturized and low-price radar transmitter becomes possible. On the other hand, a large amount of X-band radar satellite data is currently available, such as TerraSAR-X, CosmoSky-Med and KOMPSAT5, which have high spatial resolution.
The purpose of the utility model is realized through the following technical scheme:
a miniaturized millimeter-scale precision bidirectional flat plate radar corner reflector comprises a single-flux corner reflector, a copper-plated conical nut, galvanized screw rods, a concrete foundation, a horizontal supporting panel and a water outlet, wherein the lower ends of a plurality of the galvanized screw rods are connected with the concrete foundation, the upper end of the galvanized screw rods is connected with the horizontal supporting panel, each galvanized screw rod is provided with the copper-plated conical nut used for adjusting the angle of the horizontal supporting panel, two triangular mounting holes which penetrate through the horizontal supporting panel and are in central symmetry are arranged on the horizontal supporting panel, a triangular pyramid reflector is arranged in each triangular mounting hole, each reflector comprises three triangular single-flux corner reflectors, and a water outlet for discharging accumulated water in the reflector is formed in one of the single-flux corner reflectors.
Furthermore, the upper surface of the horizontal supporting panel is rectangular, and the mounting holes with isosceles triangle-shaped orifices are formed in the rectangular surface.
Furthermore, the single-flux corner reflector comprises two waist electromagnetic wave reflection plates and a bottom electromagnetic wave reflection plate, the two waist electromagnetic wave reflection plates are matched with the waist edge of the mounting hole, and the bottom electromagnetic wave reflection plate is matched with the bottom edge of the waist electromagnetic wave reflection plate.
Furthermore, the intersecting line of the two waist electromagnetic wave reflecting plates is vertical to the height of the triangle formed by the bottom electromagnetic wave reflecting plates.
Furthermore, a level gauge for detecting the horizontal state condition of the horizontal support panel is arranged on the horizontal support panel.
Furthermore, an opening part formed by the three single-flux corner reflectors is provided with a transparent toughened glass protective cover matched with the opening part.
Further, a tip portion of each of the reflectors is in contact with the concrete foundation.
Further, the water discharge port is disposed near a tip portion of the reflector.
Furthermore, the concrete foundation with through four between the horizontal support panel galvanized screw poles are connected, four galvanized screw poles set up on four angles of horizontal support panel.
Furthermore, the opening part is detachably connected with the transparent toughened glass protective cover.
The utility model has the advantages that:
in the corner reflector, firstly, not only the structure is miniaturized, but also the corner reflector is convenient to carry, the cost is very low, and a large amount of linear infrastructure for monitoring, such as oil pipelines or weed-covered dams, can be used. Secondly, small corner reflectors take up little floor space and are more convenient to install, especially where the monitored infrastructure itself is limited in space. Third, miniaturized corner reflectors have very low visual impact on the present landscape. And the accuracy of the monitoring can be of the order of about 1 mm.
Drawings
FIG. 1 is a schematic side view of the present invention;
fig. 2 is a schematic side elevation view of the structure of the present invention;
FIG. 3 is a schematic view of the front vertical surface of the structure of the present invention;
fig. 4 is a schematic plan view of the present invention;
fig. 5 is a schematic cross-sectional view of one of the reflectors of the present invention taken from the middle.
In the figure, 1-single flux corner reflector, 2-copper-plated conical nut, 3-galvanized screw rod, 4-level, 5-concrete foundation, 6-horizontal supporting panel, 7-water outlet and 8-transparent toughened glass protective cover.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution:
the utility model provides a two-way dull and stereotyped radar corner reflector of miniaturized millimeter level precision, including two pairs of single flux corner reflector 1, copper facing conical nut 2, galvanized screw pole 3, concrete foundation 5, horizontal support panel 6 and outlet 7, 4 galvanized screw pole 3's lower extreme links to each other with concrete foundation 5, galvanized screw pole 3's upper end links to each other with horizontal support panel 6, be provided with copper facing conical nut 2 that is used for adjusting horizontal support panel 6 angle on every galvanized screw pole 3, be provided with two on the horizontal support panel 6 and run through and become the central symmetry's triangle-shaped mounting hole, be provided with the reflector of triangular pyramid in every triangle-shaped mounting hole, every reflector comprises single flux corner reflector 1, be provided with outlet 7 that is used for discharging the inside ponding of reflector on the one side board of single flux corner reflector 1. The horizontal supporting panel 6 is rectangular, a mounting hole with an isosceles triangle orifice is formed in the surface of the horizontal supporting panel, and a toughened glass protective cover 8 is mounted on the mounting hole. The single flux corner reflector 1 comprises two waist electromagnetic wave reflection plates and a bottom electromagnetic wave reflection plate, wherein the two waist electromagnetic wave reflection plates are matched with the waist edge of the mounting hole, the electromagnetic wave reflection plates are matched with the bottom edge of the waist electromagnetic wave reflection plates, and meanwhile, the bottom electromagnetic wave reflection plates are also matched with the waist edge of the mounting hole. The intersecting line of the two waist electromagnetic wave reflecting plates is vertical to the height of a triangle formed by the bottom electromagnetic wave reflecting plates. The water discharge port 7 is provided near the tip end of the reflector. The tip of each reflector is in contact with the concrete foundation 5. Wherein the horizontal support panel 6 needs to be kept in a horizontal position. The miniaturized bi-directional corner reflector comprises two small triangular reflectors, one reflector facing the direction of the flux of the up-orbit satellite and the other reflector facing the direction of the flux of the down-orbit satellite. Since both are coupled to a unique structure, two-dimensional vector displacements of the same deformation signal can be detected simultaneously. The length and width of the whole bidirectional corner reflector is about 36cm multiplied by 21cm, and the height is about 12cm (excluding the height of the concrete foundation 5), similar to the ground paving bricks. The flat plate type corner reflector is very suitable for being applied to linear dams covered by a large amount of weeds or countries and regions with a large amount of landforms in low-land plain areas.
The single-flux angle reflector 1 and the horizontal supporting panel 6 are both made of metal aluminum plates (or other light coating alloy materials with high electromagnetic wave reflection performance) and are manufactured into a single-flux angle reflection instrument with a certain incident angle, and the single-flux angle reflection instrument is used for effectively reflecting radar electromagnetic waves of an orbit-ascending or orbit-descending satellite. The copper-plated conical nut 2 is used for supporting and adjusting the height. The galvanized screw rod 3 is a fixed supporting structural member and is about 12cm high. The concrete foundation 5 is used for fixing the whole instrument, ensures the structural stability of the instrument, and is partially or completely placed in the sand. For soils with different physical and chemical properties, such as higher liquefaction, for example, sandy soils, the soil should be thickened properly to ensure the stability. The aperture of the water outlet 7 is 4-6 mm, and the rain and snow water seeping into the corner in rainy and snowy days is removed.
In some embodiments, a level 4 is disposed on the horizontal support panel 6 for detecting the horizontal state of the horizontal support panel 6. The level 4 is used for adjusting and ensuring the horizontal state of the horizontal direction of the corner reflector by combining the copper-plated conical nut 2, namely the horizontal support panel 6 is ensured to be horizontally arranged.
In some embodiments, the openings formed by the three single-flux corner reflectors 1 are provided with transparent tempered glass protective covers 8 matched with the openings. The opening part is detachably connected with the transparent toughened glass protective cover 8. Transparent toughened glass protection casing 8 is the glass protection casing of angle reflection ware, and the glass protection casing can be dismantled when probably influencing radar echo signal, and transparent toughened glass protection casing 8 is used for sheltering from rain and snow water or stone junk etc..
In some embodiments, the concrete foundation 5 is connected to the horizontal support panel 6 by four galvanized screw rods 3, and the four galvanized screw rods 3 are disposed at four corners of the horizontal support panel 6.
Firstly, the utility model discloses the structure is miniaturized, and conveniently carries, and the cost is cheaper, can extensively be used for monitoring the longer linear infrastructure of route and survey for a long time, for example the dam of petroleum pipeline or weeds cover etc.. Secondly, the utility model discloses area is little, the installation is more convenient, and especially the infrastructure that monitors lays the advantage more obvious under the area and the limited condition in space. Third, the miniaturized corner reflectors have very little impact on the present landscape vision. And the monitoring precision can reach about 1mm magnitude, and errors caused by SCR in phase interference and deformation signals can be effectively reduced through space-time filtering after the angle reflector array is miniaturized.
The utility model discloses but workable in moist environment and have shallow careless flat ground, should estimate the SCR value of reflector and environment before the installation, use backscattering coefficient etc. to carry out the angle estimation of model estimation and single radar reflector rib flange. The whole device is arranged on a wide shallow grass lawn area or a linear dam for long-term observation, and the effect is most ideal. The method is mainly suitable for observing satellite data of the X-band radar (for example, the resolution of a TerrasAR-X satellite image is 3X 3m, and the change of an incident angle is between 24 and 39 degrees). When the device is installed, the periphery of the device is provided with a small number of tall and big shelters, and the foundation of the device is deeply buried and fixed and thickened according to the physical and chemical properties of actual soil.
The cross section of the single flux radar reflector 1 has a certain degree of freedom in maintaining the maximized radar cross section direction while maintaining the horizontal aperture direction by estimating and selecting the sizes of rib ribs b and a (the height of a triangle formed by the bottom electromagnetic wave reflecting plate). The value of a/b is related to the magnitude of theta, and should be estimated according to parameters such as satellite incidence angle, dimension, elevation and the like. As shown in fig. 5, a is the height of the triangle formed by the bottom electromagnetic wave reflecting plate, and b is the length of the intersection line of the two waist electromagnetic wave reflecting plates. When the bidirectional flat-plate radar angle reflector array is arranged, the optimized deformation field sampling needs to be considered, the distance between each small-sized flat-plate radar reflector needs to be considered when the array is observed, and the distance is not less than the error caused by the decoherence effect caused by atmospheric delay and is about 800 meters.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (10)
1. The utility model provides a two-way dull and stereotyped radar corner reflector of miniaturized millimeter level precision which characterized in that: including single flux corner reflector (1), copper facing taper nut (2), zinc-plated screw pole (3), concrete foundation (5), horizontal support panel (6) and outlet (7), a plurality of the lower extreme of zinc-plated screw pole (3) with concrete foundation (5) link to each other, the upper end of zinc-plated screw pole (3) with horizontal support panel (6) link to each other, every be provided with on zinc-plated screw pole (3) and be used for the adjustment horizontal support panel (6) angle copper facing taper nut (2), be provided with two on horizontal support panel (6) and run through and become the triangle-shaped mounting hole of central symmetry, every be provided with the reflector of three triangular pyramid shapes at the bottom of going in the triangle-shaped mounting hole, every single flux corner reflector (1) are three electromagnetic wave reflection panel group that are three triangular shape and constitute, every be provided with on single flux corner reflector (1) and be used for discharging ponding inside the reflector ponding A water outlet (7).
2. A miniaturized millimeter-scale precision bi-directional flat-panel radar corner reflector according to claim 1, characterized in that: the upper surface of the horizontal supporting panel (6) is rectangular, and the rectangular surface is provided with mounting holes with openings in the shape of isosceles triangles.
3. A miniaturized millimeter-scale precision bi-directional flat-panel radar corner reflector according to claim 2, characterized in that: the single-flux corner reflector (1) comprises two waist electromagnetic wave reflecting plates and a bottom electromagnetic wave reflecting plate, the two waist electromagnetic wave reflecting plates are matched with the waist edges of the mounting holes, and the bottom electromagnetic wave reflecting plate is matched with the bottom edges of the waist electromagnetic wave reflecting plates.
4. A miniaturized millimeter-scale precision bi-directional flat-panel radar corner reflector according to claim 3, characterized in that: the intersecting line of the two waist electromagnetic wave reflecting plates is vertical to the high line of the triangle of the bottom electromagnetic wave reflecting plate.
5. A miniaturized millimeter-scale precision bi-directional flat-panel radar corner reflector according to claim 1, characterized in that: the horizontal supporting panel (6) is provided with a level (4) for detecting the horizontal state of the horizontal supporting panel (6).
6. A miniaturized millimeter-scale precision bi-directional flat-panel radar corner reflector according to claim 1, characterized in that: the opening part formed by the two single flux corner reflectors (1) is provided with a transparent toughened glass protective cover (8) matched with the opening part.
7. A miniaturized millimeter-scale precision bi-directional flat-panel radar corner reflector according to claim 1, characterized in that: the tip of each reflector is in contact with the concrete foundation (5).
8. A miniaturized millimeter-scale precision bi-directional flat-panel radar corner reflector according to claim 7, characterized in that: the drain opening (7) is provided near the tip end portion of the single-flux corner reflector (1).
9. A miniaturized millimeter-scale precision bi-directional flat-panel radar corner reflector according to claim 2, characterized in that: concrete foundation (5) with through four between horizontal support panel (6) galvanized screw pole (3) are connected, four galvanized screw pole (3) set up on four angles of horizontal support panel (6).
10. The miniaturized millimeter-scale precision bi-directional flat-panel radar corner reflector of claim 6, wherein: the opening part is detachably connected with the transparent toughened glass protective cover (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023275569.9U CN214375263U (en) | 2020-12-30 | 2020-12-30 | Miniaturized millimeter-scale precision bidirectional flat-panel radar corner reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023275569.9U CN214375263U (en) | 2020-12-30 | 2020-12-30 | Miniaturized millimeter-scale precision bidirectional flat-panel radar corner reflector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214375263U true CN214375263U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023275569.9U Expired - Fee Related CN214375263U (en) | 2020-12-30 | 2020-12-30 | Miniaturized millimeter-scale precision bidirectional flat-panel radar corner reflector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214375263U (en) |
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2020
- 2020-12-30 CN CN202023275569.9U patent/CN214375263U/en not_active Expired - Fee Related
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Granted publication date: 20211008 |