CN220207842U - Array antenna air-coupled ground penetrating radar - Google Patents
Array antenna air-coupled ground penetrating radar Download PDFInfo
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- CN220207842U CN220207842U CN202321232734.3U CN202321232734U CN220207842U CN 220207842 U CN220207842 U CN 220207842U CN 202321232734 U CN202321232734 U CN 202321232734U CN 220207842 U CN220207842 U CN 220207842U
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- 230000000149 penetrating effect Effects 0.000 title claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 31
- 238000010168 coupling process Methods 0.000 claims abstract description 28
- 238000005859 coupling reaction Methods 0.000 claims abstract description 28
- 230000008878 coupling Effects 0.000 claims abstract description 15
- 230000005855 radiation Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Abstract
The utility model discloses an array antenna space coupling ground penetrating radar which comprises an ultra-wideband array antenna and a radar host, wherein the antenna is connected with the radar host through a radio frequency cable, the array antenna comprises a plurality of miniaturized ultra-wideband antenna units, the antenna units comprise two types of receiving and transmitting sharing and receiving separation, the receiving and transmitting sharing is provided with a single feed interface, and the receiving and transmitting separation is provided with two feed interfaces. The antenna unit is fixed on the wiring board, the cable is collected in a power divider or a radio frequency delay unit arranged on the back of the wiring board, the metal cover plate is matched with the wiring board, a plurality of radio frequency cable through holes are respectively formed in the wiring board and the metal cover plate, the radar host is fixed on the metal cover plate, and a fixing device arranged on the back of the metal cover plate is close to two sides of the radar host. The utility model adopts the combination of the ultra-wideband array antenna and the radar host, thereby not only realizing the spaced detection far away from the surface of the measured object and improving the measuring effect, but also having wide application range, simple design, compact structure and improving the convenience of use.
Description
Technical Field
The utility model belongs to the field of geophysical exploration, and particularly relates to an array antenna space-coupling ground penetrating radar.
Background
The ground penetrating radar is equipment for transmitting low-frequency electromagnetic waves with stronger penetrability into the underground and collecting electromagnetic waves reflected by underground objects or interfaces, and has wide application in nondestructive detection of roads, railways, airports, bridges, tunnels, dams and the like, detection of hidden targets of underground pipelines, mines and the like. The method mainly comprises two types of ground coupling detection and air coupling detection according to an antenna measurement mode, wherein the ground coupling detection requires that a ground penetrating radar antenna is close to the surface of a measured object; the ground penetrating radar antenna can keep a certain distance from the surface of the measured object during the air coupling detection, and is generally within 1m at present.
At present, the problems that the performance of a radar system is rapidly reduced along with the measurement distance, the low-frequency antenna beam is difficult to concentrate and the like exist in the null coupling detection, the perspective measurement effect of the null coupling detection radar is lower than that of the ground coupling detection radar, and the practical application is limited.
The array antenna technology can greatly improve the antenna gain, further improve the radar system performance, and meanwhile, the array antenna can form narrower antenna beams, so that the array antenna technology is very beneficial to reducing the environmental interference. However, the conventional array antenna generally uses a feed network to feed each unit, and the design of the array feed network is more complicated as the number of antenna units is larger due to the problems of power division, coupling, matching and the like.
The present chinese utility model application document with publication number CN218824726U discloses a step frequency ground penetrating radar system, "comprising: the system comprises an upper computer, a control module, a transmitter, a receiver, an antenna switch and an array antenna; the upper computer is communicated with the transmitter and the receiver through the control module; the array antenna is connected with the antenna switch through a radio frequency cable; the antenna switch is connected with the receiver and the transmitter through the radio frequency cable; the antenna switch is connected with the antenna units to provide an antenna receiving and transmitting channel, but the system has the problems of low gain effect, small measuring range, weak accurate positioning capability, complex operation and single radar system body in the using process.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model aims to provide the array antenna space coupling ground penetrating radar, and the array antenna space coupling ground penetrating radar is based on a miniaturized ultra-wideband antenna technology, adopts a combination mode of the ultra-wideband array antenna and a radar host with higher sensitivity, realizes space-free detection far away from the surface of a measured object through the characteristics of high data transmission speed and accurate positioning of the ultra-wideband, and has the advantages of wide application range, simple design and convenient operation, and improved measurement effect.
To achieve the above and other related objects, the present utility model adopts the following technical solutions:
the utility model provides an array antenna air-coupling ground penetrating radar which comprises an ultra-wideband array antenna, a radar host, a wiring board and a metal cover plate, wherein the metal cover plate is used for shielding backward radiation of the antenna, the ultra-wideband array antenna is arranged on the front surface of the wiring board, the back surface of the wiring board is matched with the front surface of the metal cover plate, the radar host is arranged on the back surface of the metal cover plate, and the ultra-wideband array antenna is connected with the radar host through a radio frequency cable.
As the preferable technical scheme, a plurality of radio frequency cable through holes are respectively formed in the metal cover plate and the wiring plate, and the ultra-wideband array antenna is connected with the radar host through the radio frequency cables sequentially passing through the through holes in the wiring plate and the through holes in the metal cover plate.
As an optimized technical scheme, the size and the shape of the metal cover plate are matched with those of the wiring board, and the front surface of the metal cover plate covers the back surface of the wiring board.
As an optimal technical scheme, the back of the wiring board is provided with a radio frequency device, the radio frequency cable is collected at the input end of the radio frequency device, the output end of the radio frequency device is connected with an output radio frequency cable, and the output radio frequency cable is connected with a radar host. Further, the radio frequency device adopts, but is not limited to, a power divider or a radio frequency delay device.
As an preferable technical scheme, the ultra-wideband array antenna comprises a plurality of miniaturized ultra-wideband antenna units, and the miniaturized ultra-wideband antenna units adopt a receiving-transmitting shared antenna unit or a receiving-transmitting separated antenna unit. Further, the transceiver shared antenna unit comprises a single feed interface, and the transceiver separated antenna unit comprises two feed interfaces.
As an optimal technical scheme, the radar system adopted by the radar host is an ultra-wideband narrow pulse system or a stepping frequency system.
As a further preferable technical scheme, the back of the metal cover plate is provided with a fixing device, the fixing device is positioned close to two sides of the radar host, and the fixing device comprises a fixing screw and a detachable handle.
As described above, the present utility model has the following advantageous effects:
(1) According to the array antenna space coupling ground penetrating radar, the ultra-wideband array antenna with higher gain is adopted, so that the space-isolation measurement distance of space coupling perspective detection is improved, the measurement efficiency is improved, meanwhile, the beam width of the detection antenna can be reduced, the environmental interference is further reduced, and the measurement effect is improved.
(2) According to the array antenna space coupling ground penetrating radar, the ultra-wideband array antenna and the radar host are compact in structural design, and the size and the weight of the radar system are reduced by adopting the miniaturized antenna unit, so that the convenience in use is improved.
(3) The array antenna space-coupling ground penetrating radar adopts two types of miniaturized antenna units of receiving-transmitting sharing or receiving-transmitting separation, and uses a single or two feed interfaces for the two different types of receiving-transmitting sharing and receiving-transmitting separation respectively, so that the design of a feed network is simple.
(4) The array antenna air-coupling ground penetrating radar adopts but not limited to an ultra-wideband narrow pulse system or a stepping frequency system radar system, has wide application range and is simple and convenient to operate.
Drawings
Fig. 1 is a general schematic diagram of an array antenna space-coupling ground penetrating radar of the present utility model.
Fig. 2 is a schematic exploded view of an array antenna air-coupled ground penetrating radar according to the present utility model.
Wherein, the reference numerals specifically explain as follows: the ultra-wideband array antenna 1, the wiring board 2, the metal cover plate 3, the fixing device 4 and the radar host 5.
Detailed Description
For a better understanding of the objects, structures and functions of the present utility model, reference should be made to the accompanying drawings in which embodiments of the utility model are shown, and in which it is apparent that the embodiments described are merely some, but not all, of the embodiments of the utility model.
In the description of the present utility model, it should be noted that, as referred to in the present specification, positional relationships such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the positional relationships shown in the drawings, are merely for convenience of describing embodiments of the present utility model and simplifying the description, and are not to be construed as limiting the present utility model, as the indicated devices or elements must have specific orientations, configurations and operations in specific directions, or the like.
Example 1
As shown in fig. 1-2, the present embodiment provides an array antenna air-coupled ground penetrating radar, which includes an ultra-wideband array antenna 1 and a radar host 5. The ultra-wideband array antenna 1 comprises 8 receiving-transmitting separated miniaturized ultra-wideband antenna units, and the space between the antenna units is 0.13m. The ultra-wideband array antenna 1 has the overall length of 1.06m and the weight of 5 kg. The radar host 5 adopts a stepping frequency system, the working center frequency is 1.3GHz, the bandwidth is 1GHz, the beam width of a main antenna in the array direction is 16 degrees, and the dynamic range of a radar system is 80dB; the distance of the space measurement is 1 to 5m.
Example 2
As shown in fig. 1-2, the present embodiment provides an array antenna air-coupled ground penetrating radar, which includes an ultra-wideband array antenna 1 and a radar host 5. The ultra-wideband array antenna 1 comprises 8 receiving and transmitting shared miniaturized ultra-wideband antenna units, and the space between the antenna units is 0.24m. The ultra-wideband array antenna 1 has the overall length of 1.8m and the weight of 7 kg. The radar host 5 adopts an ultra-wideband narrow pulse system, the working center frequency is 500MHz, the bandwidth is 800MHz, the beam width of a main antenna in the array direction is 18 degrees, and the dynamic range of a radar system is 60dB; the distance of the space measurement is 1 to 10m.
Example 3
As shown in fig. 1 and 2, the present embodiment provides an assembling method of an array antenna space-coupling ground penetrating radar in embodiment 1 or embodiment 2, which includes the following steps:
the method comprises the steps that firstly, the back surfaces of a plurality of miniaturized ultra-wideband antenna units of an ultra-wideband array antenna 1 are fixed on the front surface of a wiring board 2, at least two antenna units are arranged, the ultra-wideband array antenna can form narrower detection beams, the back surfaces of the antenna units are connected with an input radio-frequency cable, the antenna units comprise a receiving-transmitting shared antenna unit or a receiving-transmitting separated antenna unit, the receiving-transmitting shared antenna unit comprises a single feed interface, and the receiving-transmitting separated antenna unit comprises two feed interfaces;
step two, the wiring board 2 is provided with a plurality of radio frequency cable through holes, the input radio frequency cables connected to the antenna unit are gathered at the input end of the radio frequency device arranged on the back surface of the wiring board 2 through the radio frequency cable through holes, the output end of the radio frequency device is connected with the output radio frequency cable, and in actual work, the radio frequency device comprises but is not limited to a power divider or a radio frequency delay device;
step three, the front surface of a metal cover plate 3 is covered on the back surface of a wiring panel, the metal cover plate is used for shielding the backward radiation of the ultra-wideband array antenna, a plurality of radio frequency cable through holes are formed in the metal cover plate 3, a radar host 5 is fixed on the back surface of the metal cover plate 3, the output radio frequency cable is connected to the radar host 5 through the radio frequency cable through holes in the metal cover plate 3, the radar host is used for transmitting and receiving ultra-wideband electromagnetic wave signals, and in operation, a radar system adopted by the radar host 5 comprises but is not limited to an ultra-wideband narrow pulse system or a stepping frequency system;
and step four, a plurality of fixing devices 4 are arranged on the back surface of the metal cover plate 3, the positions of the fixing devices 4 are close to the radar host 5, the fixing devices 4 comprise fixing screws and detachable handles, in actual work, when the metal cover plate is in a non-installation state, the metal cover plate can be carried through the handles, when the metal cover plate is required to be installed, the handles are detached, and the array antenna 1 is enabled to be in air-coupled ground penetrating radar and a loading platform through the fixing screws.
In the actual working process, electromagnetic waves are emitted to an underground target through the transmitting antenna in the antenna unit, radar signals are reflected between each layer and the target on the ground and underground due to different mediums, echo signals are received through the receiving antenna in the antenna unit, and then the echo signals are converted into digital signals which are collected by the radar host machine and then are subjected to data processing.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the utility model, and it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. The utility model provides an array antenna space coupling ground penetrating radar, its characterized in that includes ultra wide band array antenna (1), radar host computer (5), walks wiring board (2) and is used for shielding antenna backward radiation's metal apron (3), ultra wide band array antenna (1) install in walk wiring board (2) openly, walk wiring board (2) back with metal apron (3) openly match, radar host computer (5) install in metal apron (3) back, ultra wide band array antenna (1) through radio frequency cable with radar host computer (5) are connected.
2. The array antenna air-coupling ground penetrating radar according to claim 1, wherein a plurality of radio frequency cable through holes are respectively formed in the metal cover plate (3) and the wiring plate (2), and the ultra-wideband array antenna (1) is connected to the radar host (5) through the radio frequency cables sequentially passing through the radio frequency cable through holes in the wiring plate (2) and the radio frequency cable through holes in the metal cover plate (3).
3. An array antenna space-coupling ground penetrating radar according to claim 1, characterized in that the size and shape of the metal cover plate (3) are matched with those of the wiring board (2), and the front surface of the metal cover plate (3) is covered on the back surface of the wiring board (2).
4. An array antenna air-coupled ground penetrating radar according to claim 1, characterized in that the back of the wiring board (2) is provided with a radio frequency device, the radio frequency device comprises a radio frequency device input end and a radio frequency device output end, the radio frequency cables are collected at the radio frequency device input end, the radio frequency device output end is connected with an output radio frequency cable, and the output radio frequency cable is connected with a radar host (5).
5. An array antenna space-coupling ground penetrating radar according to claim 4, wherein the radio frequency device is a power divider or a radio frequency delay.
6. An array antenna space-coupling ground penetrating radar according to claim 1, characterized in that the ultra-wideband array antenna (1) comprises a plurality of miniaturized ultra-wideband antenna units, and the miniaturized ultra-wideband antenna units adopt a common antenna unit or a separate antenna unit for receiving and transmitting.
7. An array antenna space-coupling ground penetrating radar according to claim 6, wherein the transceiver shared antenna unit comprises a single feed interface, and the transceiver split antenna unit comprises two feed interfaces.
8. An array antenna space-coupling ground penetrating radar according to claim 1, characterized in that the radar system adopted by the radar host (5) is an ultra-wideband narrow pulse system or a step frequency system.
9. An array antenna space-coupling ground penetrating radar according to any one of claims 1-8, characterized in that the back of the metal cover plate (3) is provided with a fixing device (4), the fixing device (4) is located close to two sides of the radar host (5), and the fixing device (4) comprises a fixing screw and a detachable handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321232734.3U CN220207842U (en) | 2023-05-22 | 2023-05-22 | Array antenna air-coupled ground penetrating radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321232734.3U CN220207842U (en) | 2023-05-22 | 2023-05-22 | Array antenna air-coupled ground penetrating radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220207842U true CN220207842U (en) | 2023-12-19 |
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ID=89140239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321232734.3U Active CN220207842U (en) | 2023-05-22 | 2023-05-22 | Array antenna air-coupled ground penetrating radar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220207842U (en) |
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2023
- 2023-05-22 CN CN202321232734.3U patent/CN220207842U/en active Active
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