CN219737754U - Foundation synthetic aperture radar precision testing device and precision testing system - Google Patents
Foundation synthetic aperture radar precision testing device and precision testing system Download PDFInfo
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- CN219737754U CN219737754U CN202321108841.5U CN202321108841U CN219737754U CN 219737754 U CN219737754 U CN 219737754U CN 202321108841 U CN202321108841 U CN 202321108841U CN 219737754 U CN219737754 U CN 219737754U
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Abstract
The utility model relates to the technical field of radar testing, in particular to a precision testing device and a precision testing system for a foundation synthetic aperture radar. The foundation synthetic aperture radar precision testing device comprises a corner reflector and further comprises a movable base, wherein the corner reflector is arranged on the movable base, a movable rail is further arranged on the movable base, a sliding groove extending along the extending direction of the movable rail is formed in the movable rail, a guide piece matched with the sliding groove is arranged at the lower end of the corner reflector, scale marks are arranged on the movable rail along the extending direction of the movable rail, and an indicator matched with the scale marks is arranged on the corner reflector. Compared with the prior art, the precision testing device for the ground-based synthetic aperture radar can guide the movement of the corner reflector through the movement track, accurately obtain the movement distance of the corner reflector through the cooperation of the scale mark and the indicating piece, and further accurately test the radar precision by comparing the movement distance of the corner reflector with the movement distance of the corner reflector measured by the ground-based synthetic aperture radar.
Description
Technical Field
The utility model relates to the technical field of radar testing, in particular to a precision testing device and a precision testing system for a foundation synthetic aperture radar.
Background
Unlike lasers, the electromagnetic wave divergences used are very strong and physical focusing is difficult to achieve, and in 1999, professor d.tarchi in italy proposed the concept of a ground-based synthetic aperture radar. The ground-based synthetic aperture radar calculates the displacement of an object by acquiring radar waves of a pixel block for a plurality of times and comparing phase information of reflected waves of the object acquired in different time periods, thereby realizing high resolution, and being capable of capturing a high-resolution radar scanning image similar to an optical photograph under weather conditions with low visibility. The ground-based synthetic aperture radar has the characteristics of high resolution, all-weather operation, effective recognition of camouflage and penetrating of a cover, and has remarkable application value.
The accuracy of the ground-based synthetic aperture radar is guaranteed by achieving the characteristics, in the prior art, the accuracy of the ground-based synthetic aperture radar is generally tested by using a corner reflector, after a radar electromagnetic wave emission signal is scanned onto the corner reflector, a strong echo signal is generated on a radar window, then object displacement is calculated according to reflection signals acquired in different time periods, and then the displacement calculated by the radar is compared with the displacement of the corner reflector to detect the accuracy of the ground-based synthetic aperture radar.
In the prior art, the corner reflector is generally directly and manually carried when being moved, so that the operation is inconvenient, the obtained corner reflector is inaccurate in displacement, and the measurement accuracy of the ground-based synthetic aperture radar cannot be accurately tested, so that the design of the testing device capable of detecting the measurement accuracy of the ground-based synthetic aperture radar is a technical problem to be solved urgently by a person skilled in the art.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a precision testing device and a precision testing system for a foundation synthetic aperture radar, wherein a movable base is arranged, a movable rail is arranged on the movable base, a corner reflector can slide along a chute of the movable rail through a guide piece, and then the movement of the corner reflector is guided by the movable rail, so that the movement of the corner reflector is facilitated, the movement precision is ensured, the actual movement distance of the corner reflector can be accurately obtained through the matching of an indication piece on the corner reflector and a scale mark on the movable rail, the actual movement distance is compared with the movement distance of the corner reflector measured by the foundation synthetic aperture radar, the testing precision of the foundation synthetic aperture radar can be accurately tested, and the testing precision is ensured.
According to the technical scheme, the precision testing device for the ground-based synthetic aperture radar comprises a corner reflector and a movable base, wherein the corner reflector is arranged on the movable base, a movable rail is further arranged on the movable base, a sliding groove extending along the extending direction of the movable rail is formed in the movable rail, a guide piece matched with the sliding groove is arranged at the lower end of the corner reflector, scale marks are arranged on the movable rail along the extending direction of the movable rail, and an indicator piece matched with the scale marks is arranged on the corner reflector.
Further, the guide piece is the guide bar, and the lower extreme of guide bar stretches into in the spout, the upper end stretches out the removal track and fixed mounting is on the corner reflector, and still fixed mounting has support piece on the corner reflector one side of guide bar dorsad, and support piece is used for supporting the corner reflector and avoids the toppling.
Further, the guide bar is disposed at a side facing away from the reflection surface of the corner reflector.
Further, the support member includes two support rods, which are disposed at both sides of the moving rail, respectively, and the lower ends of which are supported on the movable base.
Further, the two support rods are symmetrically arranged on two sides of the moving track.
Further, the scale marks are scales arranged along the extending direction of the moving track, and the indicating piece is a scale pointer matched with the scales.
Further, the graduated scale is arranged on the side surface of the moving track, and the lower end of the graduated pointer is attached to the graduated scale.
The utility model further provides a foundation synthetic aperture radar precision testing system, which comprises a foundation synthetic aperture radar and a foundation synthetic aperture radar precision testing device matched with the foundation synthetic aperture radar, wherein the foundation synthetic aperture radar precision testing device comprises a corner reflector and a movable base, the corner reflector is arranged on the movable base, a movable rail is further arranged on the movable base, a sliding groove extending along the extending direction of the corner reflector is arranged on the movable rail, a guide piece matched with the sliding groove is arranged at the lower end of the corner reflector, scale marks are arranged on the movable rail along the extending direction of the corner reflector, and an indicator matched with the scale marks is arranged on the corner reflector.
Further, the guide piece is the guide bar, and the lower extreme of guide bar stretches into in the spout, the upper end stretches out the removal track and fixed mounting is on the corner reflector, and still fixed mounting has support piece on the corner reflector one side of guide bar dorsad, and support piece is used for supporting the corner reflector and avoids the toppling.
Further, the guide bar is disposed at a side facing away from the reflection surface of the corner reflector.
Further, the support member includes two support rods, which are disposed at both sides of the moving rail, respectively, and the lower ends of which are supported on the movable base.
Further, the two support rods are symmetrically arranged on two sides of the moving track.
Further, the scale marks are scales arranged along the extending direction of the moving track, and the indicating piece is a scale pointer matched with the scales.
Further, the graduated scale is arranged on the side surface of the moving track, and the lower end of the graduated pointer is attached to the graduated scale.
The beneficial effects are that: according to the precision testing device for the ground-based synthetic aperture radar, the movable base is arranged, so that the reflecting surface of the corner reflector is aligned with the radar port of the ground-based synthetic aperture radar during actual testing, the radial direction of the reflecting surface of the corner reflector is consistent with the radial direction of the radar port of the ground-based synthetic aperture radar, the operation is convenient, and the testing accuracy is ensured. The movable base is provided with the movable rail, the corner reflectors can slide along the sliding grooves of the movable rail through the guide piece, and then the movable rail is utilized to guide the movement of the corner reflectors, so that the movement of the corner reflectors is facilitated, and the movement accuracy is guaranteed.
Through the scale mark cooperation on the indicator on the corner reflector and the movable track, can accurately obtain the travel distance of corner reflector, compare this travel distance with the distance that the corner reflector that detects of ground synthetic aperture radar moved, and then can test out the test accuracy of ground synthetic aperture radar accurately, guarantee the test accuracy.
The guide piece is designed to be a guide rod of which the upper end extends out of the moving track, and the corner reflectors are supported by the support piece, so that the corner reflectors are arranged above the moving track at intervals, friction between the corner reflectors and the moving track is avoided when the corner reflectors move, the corner reflectors are protected, and the service life is guaranteed.
The guide rod is arranged on one side of the corner reflector, which is opposite to the reflecting surface, the corner reflector is supported by the support rods, and one side of the two support rods, which is opposite to the guide rod, is arranged, so that the support rods can be ensured to stably support the corner reflector, the stability is improved, the structure is simple and compact, and the use is convenient.
The graduated scale is arranged on the side face of the moving track, and the graduated pointer is attached to the graduated scale, so that the moving distance of the corner reflector can be conveniently observed and calculated, and the calculation result is ensured to be accurate.
According to the precision testing system for the ground synthetic aperture radar, disclosed by the utility model, the moving distance of the corner reflector can be accurately measured through the precision testing device for the ground synthetic aperture radar, so that the precision of the test of the ground synthetic aperture radar can be accurately tested, and the operation is convenient.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a ground based synthetic aperture radar accuracy testing device of the ground based synthetic aperture radar accuracy testing system in embodiment 1;
fig. 2 is a schematic structural diagram of another view angle of the ground based synthetic aperture radar precision testing apparatus of the ground based synthetic aperture radar precision testing system of embodiment 1.
In the figure: 1. a corner reflector; 11. a reflecting surface; 2. a movable base; 3. a support rod; 4. a guide rod; 5. a moving track; 51. a chute; 6. a graduated scale; 7. a scale pointer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present utility model, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The utility model is described in further detail below with reference to the attached drawing figures:
the specific embodiment 1 of the foundation synthetic aperture radar precision testing system provided by the utility model comprises the following components:
referring to fig. 1 and 2, the system for testing the accuracy of the ground-based synthetic aperture radar of the present utility model includes a ground-based synthetic aperture radar (not shown), and a ground-based synthetic aperture radar accuracy testing device cooperating with the ground-based synthetic aperture radar. The foundation synthetic aperture radar precision testing device comprises a movable base 2, and a corner reflector 1 is arranged on the movable base 2.
In this embodiment, the movable base 2 is a flat plate structure, and when in actual use, an operator moves the movable base 2 according to the radial distance between the ground synthetic aperture radar and the corner reflector 1 in a carrying manner, so that the corner reflector 1 is aligned to the radar port of the ground synthetic aperture radar, and further, the radial direction of the corner reflector 1 and the radial direction of the ground synthetic aperture radar are consistent, and the test accuracy is ensured. Of course, in other embodiments, the movable base 2 may further include a moving wheel disposed at a lower end of the flat plate structure, and moved by pushing.
As shown in fig. 1, the movable base 2 is further provided with a moving rail 5, the moving rail 5 is provided with a chute 51 extending along the extending direction thereof, the lower end of the corner reflector 1 is provided with a guide member adapted to the chute 51, the moving rail 5 is provided with scale marks along the extending direction thereof, and the corner reflector 1 is provided with an indicator member matched with the scale marks. The corner reflector 1 can slide along the sliding groove 51 of the moving rail 5 through the guide piece, and then the moving rail 5 is utilized to guide the movement of the corner reflector 1, so that the movement of the corner reflector 1 is facilitated, and the movement precision is ensured. Through the cooperation of the indicator on the corner reflector 1 and the scale mark on the moving track 5, the moving distance of the corner reflector 1 can be accurately obtained, the moving distance is compared with the detected moving distance of the corner reflector of the ground-based synthetic aperture radar, and then the testing precision of the ground-based synthetic aperture radar can be accurately tested, and the testing accuracy is ensured.
In this embodiment, as shown in fig. 1, the chute 51 is a T-shaped slot formed in the moving rail 5, and the upper end of the T-shaped slot is a notch, so that the guiding stability of the guiding element can be ensured by the T-shaped slot. Of course, in other embodiments, the chute 51 may be a straight chute when meeting the actual requirements, so long as the movement of the corner reflector 1 can be guided, and no limitation is made herein.
Specifically, as shown in fig. 1 and 2, in the present embodiment, the guide member is a guide rod 4, and the guide rod 4 is disposed on a side facing away from the reflection surface 11 of the corner reflector 1. The lower end of the guide rod 4 extends into the sliding groove 51 of the moving rail 5 and can slide along the sliding groove 51, the upper end of the guide rod 4 extends upwards out of the moving rail 5 and is fixedly arranged on the corner reflector 1, and a supporting piece is fixedly arranged on one side of the corner reflector 1, which is away from the guide rod 4, and is used for supporting the corner reflector 1 to avoid overturning. Therefore, the corner reflectors 1 are arranged above the moving rail 5 at intervals, friction between the corner reflectors 1 and the moving rail 5 is avoided when the corner reflectors 1 move, the corner reflectors 1 and the moving rail 5 are protected, and the service lives of the corner reflectors are guaranteed.
In the present embodiment, as shown in fig. 1 and 2, the support member includes two support rods 3 symmetrically arranged along the moving rail 5, the two support rods 3 are respectively arranged on both sides of the moving rail 5, and the lower ends of the two support rods 3 are supported on the movable base 2. The triangle that the upper ends that like this set up can make guide bar 4 and two bracing pieces 3 enclose is close with the lower terminal surface of corner reflector 1, guarantees that bracing piece 3 stably supports corner reflector 1, improves stability. And the supporting rod 3 is used for supporting the corner reflector 1, so that the structure is simple, the weight is light, and the practical use is convenient. Meanwhile, in actual use, the guide rod 4 and the two support rods 3 support the corner reflector 1 together, so that the corner reflector is more stable. In other embodiments, the support may be a support block, the upper end of which is fixedly installed on the corner reflector 1 and the lower end of which is seated on the moving rail 5, by which the corner reflector 1 is supported, and which slides on the moving rail 5 following the corner reflector 1 when the corner reflector 1 moves.
In practical use, the ground-based synthetic aperture radar can generally capture a quarter wavelength, if the distance of movement of the corner reflector 1 is greater than the quarter wavelength, the ground-based synthetic aperture radar cannot capture, so that the movement amount of the ground-based synthetic aperture radar and the corner reflector 1 is generally small, and further the distance of movement of the support rod 3 along with the corner reflector 1 is also small, and although the support rod 3 is supported between the corner reflector 1 and the movable base 2, interference cannot be caused to the movement of the corner reflector 1, the support rod 3 can always stably support the corner reflector 1, and no difficulty in movement exists in the support rod 3.
In this embodiment, as shown in fig. 1 and 2, the scale marks are scales 6 arranged along the extending direction of the moving rail 5, and the indicator is a scale pointer 7 matched with the scales 6.
Specifically, the scale 6 is arranged on the side of the moving rail 5, and the scale pointer 7 is arranged on the side of the corner reflector 1 facing the scale 6. The specific scale pointer 7 is arranged at one end of the corner reflector 1 facing away from the reflecting surface 11, and the lower end of the scale pointer 7 is attached to the scale 6. The setting is convenient for observe and calculate the displacement distance of corner reflector 1 on the one hand, on the other hand can guarantee that scale pointer 7 indicates accurately, guarantees that the result of calculating corner reflector 1 displacement is accurate, and then guarantees the accuracy of testing ground synthetic aperture radar precision.
In other embodiments, the scale 6 may also be arranged on the upper end face of the moving rail 5, with the lower end of the scale pointer 7 abutting against the surface of the scale 6 for indication. In other embodiments, the scale mark may be a plurality of scale points customized according to actual movement requirements, that is, different scale points are arranged on the moving track 5 along the extending direction, the distance between the different two points is the movement amount of the corner reflector 1 in different tests, and the displacement amount of the corner reflector 1 can be obtained by observing the different points.
The working process of the utility model comprises the following steps: the ground-based synthetic aperture radar is placed in an operating position and the movable base 2 is arranged on the ground. When the accuracy test is performed on the ground based synthetic aperture radar, the movable base 2 is first moved according to the radial distance of the ground based synthetic aperture radar from the corner reflector 1 so that the corner reflector 1 is aligned with the ground based synthetic aperture radar, and then the ground based synthetic aperture radar is turned on.
The initial position of the corner reflector 1 on the graduated scale 6 is recorded, the corner reflector 1 is moved according to the test requirement, the corner reflector 1 slides on the moving track 5, the indication of the graduated pointer 7 on the graduated scale 6 is observed, the position of the corner reflector 1 on the graduated scale 6 when the corner reflector 1 stops moving is recorded, and the actual moving amount of the corner reflector 1 is calculated. The test movement amount of the corner reflector 1 measured by the ground based synthetic aperture radar is observed. Meanwhile, in the 1 moving process of the corner reflector, whether the ground-based synthetic aperture radar can sensitively capture echoes or not can be observed, and the sensitivity is tested.
And comparing the test movement amount with the actual movement amount, if the test movement amount and the actual movement amount are consistent, the precision of the foundation synthetic aperture radar meets the requirement, and if the test movement amount and the actual movement amount are inconsistent, the precision does not reach the standard. Thus, the precision test of the ground-based synthetic aperture radar is completed.
Example 2: the present embodiment provides a different guide member, unlike embodiment 1 in that in this embodiment, the guide member is a guide block, the lower end of the guide block is deep into the chute, the upper end of the guide block is directly fixedly mounted on the corner reflector, the lower end surface of the corner reflector is directly located on the moving track, and at this time, the lower end of the corner reflector does not need to be provided with a support member, and the moving track directly supports the corner reflector.
Example 3: the present embodiment provides a different guide, unlike embodiment 1, in which the guide rod may be provided at a side of the corner reflector facing the reflection surface when the actual demand is satisfied.
The structure of the ground-based synthetic aperture radar precision testing device of the embodiment of the utility model is the same as that of the ground-based synthetic aperture radar precision testing device in the ground-based synthetic aperture radar precision testing system, and the description thereof is omitted.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The utility model provides a ground synthetic aperture radar precision testing arrangement, includes corner reflector (1), its characterized in that still includes movable base (2), corner reflector (1) set up on movable base (2), still be provided with on movable base (2) and remove track (5), be provided with on removal track (5) along spout (51) that extend of its extending direction, the lower extreme of corner reflector (1) be provided with the guide of spout (51) adaptation, be provided with the scale mark along its extending direction on removal track (5), be provided with on corner reflector (1) with scale mark complex indicator.
2. The ground-based synthetic aperture radar precision testing device according to claim 1, wherein the guide member is a guide rod (4), the lower end of the guide rod (4) extends into the sliding groove (51), the upper end of the guide rod extends out of the moving track (5) and is fixedly arranged on the corner reflector (1), and a support member is fixedly arranged on one side of the corner reflector (1) facing away from the guide rod (4) and is used for supporting the corner reflector (1) to avoid overturning.
3. The ground-based synthetic aperture radar precision testing device according to claim 2, characterized in that the guide bar (4) is arranged on the side facing away from the reflecting surface (11) of the corner reflector (1).
4. A ground-based synthetic aperture radar precision testing apparatus according to claim 3, characterized in that the support comprises two support bars (3), the two support bars (3) being arranged on both sides of the moving track (5) respectively, and the lower ends of the two support bars (3) being supported on the movable base (2).
5. The ground-based synthetic aperture radar precision testing device according to claim 4, characterized in that the two support bars (3) are symmetrically arranged on both sides of the moving track (5).
6. Foundation synthetic aperture radar accuracy testing device according to any of claims 1-5, characterized in that the scale marks are scales (6) arranged along the extension direction of the moving track (5), and the indicator is a scale pointer (7) cooperating with the scales (6).
7. The ground-based synthetic aperture radar precision testing device according to claim 6, characterized in that the scale (6) is arranged on the side of the moving track (5), and the lower end of the scale pointer (7) is attached to the scale (6).
8. A ground based synthetic aperture radar accuracy testing system, comprising a ground based synthetic aperture radar and a ground based synthetic aperture radar accuracy testing device matched with the ground based synthetic aperture radar, wherein the ground based synthetic aperture radar accuracy testing device is the ground based synthetic aperture radar accuracy testing device according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321108841.5U CN219737754U (en) | 2023-05-10 | 2023-05-10 | Foundation synthetic aperture radar precision testing device and precision testing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321108841.5U CN219737754U (en) | 2023-05-10 | 2023-05-10 | Foundation synthetic aperture radar precision testing device and precision testing system |
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| Publication Number | Publication Date |
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| CN219737754U true CN219737754U (en) | 2023-09-22 |
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| CN202321108841.5U Active CN219737754U (en) | 2023-05-10 | 2023-05-10 | Foundation synthetic aperture radar precision testing device and precision testing system |
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| CN (1) | CN219737754U (en) |
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2023
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