CN218816538U - Portable advanced geological early warning device based on phased array radar - Google Patents
Portable advanced geological early warning device based on phased array radar Download PDFInfo
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- CN218816538U CN218816538U CN202223427047.5U CN202223427047U CN218816538U CN 218816538 U CN218816538 U CN 218816538U CN 202223427047 U CN202223427047 U CN 202223427047U CN 218816538 U CN218816538 U CN 218816538U
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Abstract
The utility model discloses a portable advance geology early warning device based on phased array radar, including advance geology early warning host computer, the receiver, the transmitter, first plate antenna, second plate antenna, first portable pole and the portable pole of second, first plate antenna and second plate antenna are phased array radar antenna, advance geology early warning host computer and receiver communication connection, receiver and transmitter communication connection, first plate antenna installs on the receiver, second plate antenna installs on the transmitter, first portable pole and first plate antenna are connected, second portable pole and second plate antenna are connected, when carrying out geology abnormal structure and visiting, first plate antenna and second plate antenna are used for the different positions of laminating at the detection face, and first plate antenna and second plate antenna are parallel to each other. The utility model discloses an advance geology early warning device based on phased array radar has possessed advantages such as the detection degree of depth is dark, the use is convenient and convenient operation.
Description
Technical Field
The utility model belongs to the technical field of advance geology early warning, concretely relates to portable advance geology early warning device based on phased array radar.
Background
At present, in mineral exploitation operation, such as coal mining operation, the working environment of a fully mechanized mining face is severe, electromagnetic interference is serious, and potential geological disaster risks exist. In addition, the geological abnormal structure inside the coal seam cannot be detected before coal mining operation, and the geological abnormal structure comprises coal seam strike, ordovician water, falling column water inrush, faults, karst caves or gravel belts and the like. The geological abnormal structure causes interruption of normal coal mining work if the geological abnormal structure is light, and seriously causes great economic loss and endangers the life safety of personnel.
In the current stage, the advanced geological early warning device usually adopts the means of point electrodes, a camera, a pressure sensor, microseismic, radar detection and the like to realize early warning and monitoring on the operation surface. These monitoring means have the following problems during operation: 1. the point electrode method has side influence; 2. the camera can only see the surface of the coal bed; 3. the pressure sensor cannot be protected after being installed, is extremely easy to damage, cannot ensure reliability and has a short service life; 4. the microseism method needs to lay a large number of detectors into the drill holes, and needs to drill a large number of drill holes, so that the time and labor are wasted, and the resolution of the monitoring result is low; 5. the conventional radar technology can only realize the detection depth within less than or equal to 10m, and the depth is too shallow, so that the advanced early warning within a large distance range cannot be realized. Therefore, the monitoring means have the problems of shallow detection depth, poor precision, poor implementation effect, insufficient resolution or difficult protection and the like.
Nowadays, the demand for convenience and rapid detection function of the advanced geological early warning device is more and more increasing, a scheme for conveniently and efficiently detecting the geological abnormal structure by penetrating through the coal bed in the coal mining operation is urgently needed, and the defects existing in the conventional advanced geological early warning device can be overcome, so that the trend of the coal bed in front of a working face, the water of the ordoviciation, the water inrush of a collapse column, the fault, the karst cave or the gravel zone and the like can be detected in advance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome one or more of prior art not enough, provide a portable advance geology early warning device based on phased array radar.
The purpose of the utility model is realized through the following technical scheme:
portable advance geology early warning device based on phased array radar, advance geology early warning device be used for with survey
Detecting a geological abnormal structure after surface lamination; the advanced geological early warning device comprises an advanced geological early warning host, a receiver, a transmitter, a first plate-shaped antenna, a second plate-shaped antenna, a first lifting rod and a second lifting rod, wherein the first plate-shaped antenna and the second plate-shaped antenna are phased array radar antennas; the advanced geological early warning host is in communication connection with the receiver, the receiver is in communication connection with the transmitter, the first plate-shaped antenna is installed on the receiver, the second plate-shaped antenna is installed on the transmitter, the first lifting rod is connected with the first plate-shaped antenna, the second lifting rod is connected with the second plate-shaped antenna, when geological abnormal structure detection is carried out, the first plate-shaped antenna and the second plate-shaped antenna are used for being attached to different positions of a detection surface, and the first plate-shaped antenna and the second plate-shaped antenna are parallel to each other;
the advanced geological early warning host is used for generating a pulse type detection signal and sending the pulse type detection signal to the transmitter through the receiver;
the transmitter generates radar detection waves according to the received detection signals and transmits the radar detection waves through the second plate-shaped antenna;
the receiver is used for receiving the echo reflected by the geological abnormal structure through the first plate-shaped antenna and sending the echo to the advanced geological early warning host;
the advanced geological early warning host is also used for receiving the echo and analyzing the echo.
Preferably, the advanced geological early warning device further comprises a power supply, and the power supply is electrically connected with the advanced geological early warning host; a first battery groove body is arranged on the receiver, and a first battery is arranged in the first battery groove body; and a second battery groove body is arranged on the transmitter, and a second battery is arranged in the second battery groove body.
Preferably, the number of the first battery groove bodies is two, and the number of the second battery groove bodies is two.
Preferably, the advanced geological early warning device further comprises a first transmission optical fiber, a second transmission optical fiber, a third transmission optical fiber and a fourth transmission optical fiber; the receiver is provided with a first electrode hole groove, a second electrode hole groove, a third electrode hole groove and a fourth electrode hole groove, and the transmitter is provided with a fifth electrode hole groove and a sixth electrode hole groove;
the first end of the first transmission optical fiber is connected with the detection signal output end of the advanced geological early warning host, and the second end of the first transmission optical fiber is connected with the detection signal input end of the receiver through the first electrode hole groove;
the first end of the second transmission optical fiber is connected with the detection signal output end of the receiver through a second electrode hole slot, and the second end of the second transmission optical fiber is connected with the detection signal input end of the transmitter through a fifth electrode hole slot;
the first end of the third transmission optical fiber is connected with the echo signal input end of the advanced geological early warning host, and the second end of the third transmission optical fiber is connected with the echo signal output end of the receiver through a third electrode hole groove;
and the first end of the fourth transmission optical fiber is connected with the return signal input end of the receiver through a fourth electrode hole slot, and the second end of the fourth transmission optical fiber is connected with the return signal output end of the transmitter through a sixth electrode hole slot.
Preferably, the power supply is a lead-acid battery.
Preferably, the first planar antenna is identical in structure to the second planar antenna; the first plate-shaped antenna is a plate-shaped antenna with the center frequency of 200MHz and the length of 0.5m, or a plate-shaped antenna with the center frequency of 100MHz and the length of 1m, or a plate-shaped antenna with the center frequency of 50MHz and the length of 2m, or a plate-shaped antenna with the center frequency of 25MHz and the length of 4m, or a plate-shaped antenna with the center frequency of 12.5MHz and the length of 8 m.
Preferably, when geological abnormal structure detection is carried out, the spacing distance between the first plate-shaped antenna and the second plate-shaped antenna is adjustable.
The utility model has the advantages that:
(1) The detection depth of the geological abnormal structure is improved by using the first plate-shaped antenna and the second plate-shaped antenna which are of the phased array type, the defects of poor precision, poor implementation effect, insufficient resolution, difficulty in protection and the like in detection schemes such as a traditional point electrode method and a microseismic method are overcome by using a detection method based on the phased array radar technology, advanced early warning in a large distance range is realized, and the maximum detection depth is more than or equal to 100m; meanwhile, the use convenience of the advanced geological early warning device is realized by combining the arrangement of the first lifting rod, the second lifting rod, the power supply, the first battery and the second battery.
To sum up, the embodiment of the utility model provides an advance geology early warning device based on phased array radar that realizes possesses the detection degree of depth, it is convenient to use, advantages such as convenient operation to explore in advance and combine the coal seam trend in the place ahead of working face (detection face), the water of oxygen, the pillar that falls suddenly water, the fault, geology abnormal structure such as karst cave or rubble area, after discovering geology abnormal structure, can in time take corresponding safeguard procedures, avoided unnecessary losses such as personnel and equipment, security when having improved the mining operation of mineral products.
(2) The quantity of first battery is two, and one is main one and is equipped with, and the quantity of second battery is two, and one is main one and is equipped with, the duration when having improved receiver and transmitter operation, and then improved the embodiment of the utility model provides an advance geology early warning device's based on phased array radar use reliability who realizes.
(3) First plate antenna and the equal compatible multiple specification of second plate antenna are applicable to the differentiation operation demand of different detection depth, and then have improved the embodiment of the utility model provides an advance geology early warning device's based on phased array radar suitability that realizes.
(4) When going on geology abnormal structure to survey, the spacing distance of first plate antenna and second plate antenna is adjustable, makes the embodiment of the utility model provides a realize advance geology early warning device based on phased array radar has possessed the ability of surveying different geology position radar wave speed, and the detection function reinforcing.
Drawings
FIG. 1 is a schematic structural diagram of a portable advanced geological early warning device based on a phased array radar;
FIG. 2 is a functional block diagram of an advanced geological early warning host;
FIG. 3 is a schematic diagram of a detection method of the portable advanced geological early warning device based on the phased array radar;
FIG. 4 is an enlarged side view of the advanced geological early warning host of FIG. 1;
FIG. 5 is an enlarged side view of the receiver or transmitter of FIG. 1;
in the figure, 1, an advanced geological early warning host computer; 2. a lead-acid battery; 3. a host power supply cable; 4. a receiver; 5. a first plate-shaped antenna; 6. a first lifting bar; 7. a transmitter; 8. a second plate-shaped antenna; 9. a second lifting bar; 10. a first transmission optical fiber; 11. a second transmission optical fiber; 12. a third transmission fiber; 13. a fourth transmission fiber.
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 to 5, the embodiment provides a portable advanced geological early warning device based on a phased array radar, and the advanced geological early warning device is used for detecting a geological abnormal structure based on radar detection waves after being attached to a detection surface (a fully mechanized coal mining face in coal mining operation).
Specifically, the advanced geological early warning device comprises an advanced geological early warning host 1, a power supply, a receiver 4, a first battery, a transmitter 7, a second battery, a first plate-shaped antenna 5, a second plate-shaped antenna 8, a first lifting rod 6 and a second lifting rod 9, wherein the first plate-shaped antenna 5 and the second plate-shaped antenna 8 are both phased array radar antennas, the advanced geological early warning host 1 is in communication connection with the receiver 4, the receiver 4 is in communication connection with the transmitter 7, the first plate-shaped antenna 5 is installed at the bottom of the receiver 4, the second plate-shaped antenna 8 is installed at the bottom of the transmitter 7, the first lifting rod 6 is connected with the first plate-shaped antenna 5, the second lifting rod 9 is connected with the second plate-shaped antenna 8, the power supply is electrically connected with the advanced geological early warning host 1 through a host power supply cable 3, the first battery is installed in a first battery tank arranged on the receiver 4, and the second battery is installed in a second battery tank arranged on the transmitter 7. When detecting a geological abnormal structure, the first plate-shaped antenna 5 and the second plate-shaped antenna 8 are attached to different positions on the detection surface, and the first plate-shaped antenna 5 and the second plate-shaped antenna 8 are parallel to each other.
The advanced geological early warning host 1 is used for generating a pulse type detection signal and sending the pulse type detection signal to the transmitter 7 through the receiver 4. Specifically, the advanced geological early warning host 1 sends the generated pulse-type detection signal to the receiver 4, and the receiver 4 receives the detection signal and forwards the detection signal to the transmitter 7.
The transmitter 7 generates a radar detection wave based on the received detection signal, and transmits the radar detection wave through the second plate antenna 8.
The receiver 4 is used for receiving the echo reflected by the geological abnormal structure through the first plate-shaped antenna 5 and sending the echo to the advanced geological early warning host 1.
The advanced geological early warning host 1 is also used for receiving the echo and analyzing the echo. Specifically, the advance geological early warning host 1 analyzes the echo by using an analysis process in a common embodiment. For example: the method comprises the steps of calculating echo signals to obtain a geological radar image, identifying reflection forms among different objects by utilizing parameters such as intensity of energy reflection, waveform and frequency change speed, distribution characteristics, continuous in-phase axis, staggered section and the like in the corresponding geological radar image, and automatically recording double time courses of radar detection waves propagated in a geological layer so as to determine the spatial position of a geological abnormal structure. As shown in fig. 2, the advanced geological early warning host 1 includes the following functional modules: the device comprises a signal module, an interpretation module and a display module. The signal module is used for generating pulse type detection signals and processing received echoes reflected by the geological abnormal structure; the interpretation module analyzes the echo, generates an analysis result after the analysis, and sends the analysis result to the display module, wherein the analysis result comprises early warning information, and the early warning information comprises geological abnormal structures such as coal seam trend, ordovician water, collapse column water inrush, faults, karst caves or gravel belts and the like at a determined position in front of a detection surface; the display module displays the analysis result, and the display module is preferably a display screen. In another embodiment, the advanced geological early warning host 1 does not display the analysis result, but transmits the analysis result to a gateway centralized control host set in the coal mining operation for display.
In the present embodiment, the power supply source is preferably a lead-acid battery 2, and the power supply capacity of the lead-acid battery 2 is 12v @9ah. The first battery groove bodies are respectively arranged at the left side and the right side of the receiver 4, the number of the first batteries is two, and one battery is a main battery and the other battery is a spare battery. The second battery groove bodies are respectively arranged at the left side and the right side of the transmitter 7, the number of the second batteries is two, and one battery is a main battery and the other battery is a spare battery. The advanced geological early warning host 1 has the following specific specifications: the time window is 0.5-200000ns; the number of sampling points is 10-31000; the hardware superposition times are 1-65536; software superposition is not limited; enhancing a dynamic signal; hardware sampling interval 5ps; digital balance time sampling; the pulse receiving frequency is greater than 10 kilohertz; active source temperature and voltage compensation; the energy consumption is 100mA @12V; the working temperature range is minus 50 ℃ to plus 50 ℃. When the detection operation is carried out, the advanced geological early warning host 1 can be carried on the back by a detector through the auxiliary tool straps, so that the operation is facilitated. The shell of the receiver 4 is made of light waterproof insulating plastic steel; the receiver 4 is provided with a switch button capable of switching on and off the receiver 4 and a signal indicator for representing the working state of the receiver 4; the overall dimensions of the receiver 4 are 24.8cm x 18cm x 12.1cm; the specific specifications of the receiver 4 are: the maximum superposition time 65536, the power consumption 100mA @12V, the working temperature range of-50 ℃ to +50 ℃ and the data record of 32bit. The transmitter 7 housing is also made of lightweight waterproof insulating plastic steel; the transmitter 7 is provided with a switch button capable of switching on and off the transmitter 7 and a signal indicator for representing the working state of the transmitter 7; the overall size of the transmitter 7 is 24.8cm 12.1cm 8.2cm; the specific specifications of the transmitter 7 are: the maximum generated voltage is 1200V, the voltage at 1-5 gear can be adjusted, the power consumption is 150mA @12V, and the working temperature range is minus 50 ℃ to plus 50 ℃. The first and second hand-lift bars 6 and 9 are made of insulating plastic sleeve and non-slip material, and have the size of 36cm by 10cm by 62cm.
Fig. 3 shows a schematic diagram of a detection method, when geological abnormal structure detection is performed, the first plate-shaped antenna 5 and the second plate-shaped antenna 8 are closely attached to a detection surface and are separated by a certain distance, the first plate-shaped antenna 5 and the second plate-shaped antenna 8 are parallel to each other, and the realized geological early warning direction is a direction in which the first plate-shaped antenna 5 and the second plate-shaped antenna 8 vertically face downward. From the perspective of the moving manner of the first plate-shaped antenna 5 and the second plate-shaped antenna 8, the embodiments of the advanced geological early warning device implemented by the present embodiment for geological abnormal structure detection can be classified into the following three types: one of the two methods is a common offset method, that is, the first plate-shaped antenna 5 and the second plate-shaped antenna 8 move at the same time and measure the distance; the second method is a wide angle reflection method, that is, one of the first plate-shaped antenna 5 and the second plate-shaped antenna 8 is fixed, and the other is moved; the third method is a common center point method, that is, the first plate-shaped antenna 5 and the second plate-shaped antenna 8 move equidistantly around a certain point. When the common center point method is adopted, the advanced geological early warning device can detect different geological layers, and when the wide-angle reflection method is adopted, the advanced geological early warning device can quickly complete the detection process.
Preferably, in the advanced geological early warning device, the communication connection between the advanced geological early warning host 1 and the receiver 4 is realized through the first transmission optical fiber 10 and the third transmission optical fiber 12, the communication connection between the receiver 4 and the transmitter 7 is realized through the second transmission optical fiber 11 and the fourth transmission optical fiber 13, correspondingly, the receiver 4 is provided with a first electrode hole groove, a second electrode hole groove, a third electrode hole groove and a fourth electrode hole groove, the transmitter 7 is provided with a fifth electrode hole groove and a sixth electrode hole groove, and for facilitating the connection of optical fiber cables, marks are arranged beside each electrode hole groove. The first end of the first transmission optical fiber 10 is connected with the detection signal output end of the advanced geological early warning host 1, and the second end of the first transmission optical fiber 10 is connected with the detection signal input end of the receiver 4 through the first electrode hole slot. A first end of the second transmission optical fiber 11 is connected with the detection signal output end of the receiver 4 through the second electrode hole slot, and a second end of the second transmission optical fiber 11 is connected with the detection signal input end of the transmitter 7 through the fifth electrode hole slot. The first end of the third transmission optical fiber 12 is connected with the echo signal input end of the advanced geological early warning host 1, and the second end of the third transmission optical fiber 12 is connected with the echo signal output end of the receiver 4 through the third electrode hole slot. A first end of the fourth transmission fiber 13 is connected to the return signal input end of the receiver 4 via a fourth electrode hole slot, and a second end of the fourth transmission fiber 13 is connected to the return signal output end of the transmitter 7 via a sixth electrode hole slot.
Preferably, the first plate-shaped antenna 5 and the second plate-shaped antenna 8 are identical in structure and are compatible with multiple specifications. Specifically, the first planar antenna 5 or the second planar antenna 8 may be: the antenna comprises a first specification plate-shaped antenna with the center frequency of 200MHz and the length of 0.5m, a second specification plate-shaped antenna with the center frequency of 100MHz and the length of 1m, a third specification plate-shaped antenna with the center frequency of 50MHz and the length of 2m, a fourth specification plate-shaped antenna with the center frequency of 25MHz and the length of 4m, and a fifth specification plate-shaped antenna with the center frequency of 12.5MHz and the length of 8 m. The maximum detection depth of the plate-shaped antenna with the first specification is 5-10m, and the spatial resolution is 0.125m. The maximum detection depth of the plate-shaped antenna with the second specification is 10-30m, and the spatial resolution is 0.25m. The maximum detection depth of the plate-shaped antenna with the third specification is 20-60m, and the spatial resolution is 0.5m. The maximum detection depth of the plate-shaped antenna with the fourth specification is 60 to 100m, and the spatial resolution is 1m. The maximum detection depth of the fifth-specification plate-shaped antenna is 80-120m, and the spatial resolution is 2m.
In a specific embodiment, the first 5 and second 8 patch antennas are spaced apart by 1 meter. When a second specification plate-shaped antenna with the center frequency of 100MHz is adopted, the detection distance can reach about 30m in front of the detection surface; when a third specification plate-shaped antenna with the center frequency of 50MHz is adopted, the detection distance can reach about 60m in front of the detection surface; when a fourth specification plate antenna with a center frequency of 25MHz is used, the detection distance can reach about 100m in front of the detection surface.
The utility model discloses a working process does: when coal mining operation geological exploration is carried out, the advanced geological early warning host 1 is connected with the lead-acid battery 2 through the host power supply cable 3, and detection operators carry out operation movement on the body through braces; the advanced geological early warning host 1 is connected with a receiver 4 through a first transmission optical fiber 10 and a third transmission optical fiber 12, and the receiver 4 is connected with a transmitter 7 through a second transmission optical fiber 11 and a fourth transmission optical fiber 13; the detection operator moves the receiver 4 through the first hand lever 6 and moves the transmitter 7 through the second hand lever 9; the transmitter 7 and the receiver 4 are tightly attached to a detection surface, and the spacing distance between the transmitter and the receiver is determined; the transmitter 7 and the receiver 4 are started through switch buttons respectively arranged on the transmitter 7 and the receiver 4; and the detection operator observes the analysis result of the echo through a display screen of the advanced geological early warning host 1, and performs advanced forecast and work arrangement according to the analysis result.
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 (7)
1. A portable advanced geological early warning device based on phased array radar is used for detecting a geological abnormal structure after being attached to a detection surface; the advanced geological early warning device is characterized by comprising an advanced geological early warning host, a receiver, a transmitter, a first plate-shaped antenna, a second plate-shaped antenna, a first portable rod and a second portable rod, wherein the first plate-shaped antenna and the second plate-shaped antenna are phased array radar antennas; the advanced geological early warning host is in communication connection with the receiver, the receiver is in communication connection with the transmitter, the first plate-shaped antenna is installed on the receiver, the second plate-shaped antenna is installed on the transmitter, the first lifting rod is connected with the first plate-shaped antenna, the second lifting rod is connected with the second plate-shaped antenna, when geological abnormal structure detection is carried out, the first plate-shaped antenna and the second plate-shaped antenna are used for being attached to different positions of a detection surface, and the first plate-shaped antenna and the second plate-shaped antenna are parallel to each other;
the advanced geological early warning host is used for generating a pulse type detection signal and sending the pulse type detection signal to a transmitter through the receiver;
the transmitter generates radar detection waves according to the received detection signals and transmits the radar detection waves through the second plate-shaped antenna;
the receiver is used for receiving the echo reflected by the geological abnormal structure through the first plate-shaped antenna and sending the echo to the advanced geological early warning host;
the advanced geological early warning host is also used for receiving the echo and analyzing the echo.
2. The phased array radar-based portable advanced geological early warning device as claimed in claim 1, characterized by further comprising a power supply, wherein the power supply is electrically connected with the advanced geological early warning host; a first battery groove body is arranged on the receiver, and a first battery is arranged in the first battery groove body; and a second battery groove body is arranged on the transmitter, and a second battery is arranged in the second battery groove body.
3. The phased array radar-based portable advanced geological early warning device as claimed in claim 2, wherein the number of the first battery tanks is two, and the number of the second battery tanks is two.
4. The phased array radar-based portable advanced geological early warning device according to claim 1, characterized in that the advanced geological early warning device further comprises a first transmission optical fiber, a second transmission optical fiber, a third transmission optical fiber and a fourth transmission optical fiber; a first electrode hole groove, a second electrode hole groove, a third electrode hole groove and a fourth electrode hole groove are formed in the receiver, and a fifth electrode hole groove and a sixth electrode hole groove are formed in the transmitter;
the first end of the first transmission optical fiber is connected with the detection signal output end of the advanced geological early warning host, and the second end of the first transmission optical fiber is connected with the detection signal input end of the receiver through the first electrode hole groove;
the first end of the second transmission optical fiber is connected with the detection signal output end of the receiver through a second electrode hole slot, and the second end of the second transmission optical fiber is connected with the detection signal input end of the transmitter through a fifth electrode hole slot;
the first end of the third transmission optical fiber is connected with the echo signal input end of the advanced geological early warning host, and the second end of the third transmission optical fiber is connected with the echo signal output end of the receiver through a third electrode hole groove;
and the first end of the fourth transmission optical fiber is connected with the return signal input end of the receiver through a fourth electrode hole slot, and the second end of the fourth transmission optical fiber is connected with the return signal output end of the transmitter through a sixth electrode hole slot.
5. The phased array radar-based portable advanced geological early warning device according to claim 2, wherein the power supply is a lead-acid battery.
6. The phased array radar-based portable advanced geological early warning device according to claim 1,
the first planar antenna and the second planar antenna are identical in structure; the first plate-shaped antenna is a plate-shaped antenna with a central frequency of 200MHz and a length of 0.5m, or a plate-shaped antenna with a central frequency of 100MHz and a length of 1m, or a plate-shaped antenna with a central frequency of 50MHz and a length of 2m, or a plate-shaped antenna with a central frequency of 25MHz and a length of 4m, or a plate-shaped antenna with a central frequency of 12.5MHz and a length of 8 m.
7. The phased array radar-based portable advanced geological early warning device according to claim 1, wherein the first plate-shaped antenna and the second plate-shaped antenna are adjustable in separation distance when geological abnormal structures are detected.
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| CN202223427047.5U CN218816538U (en) | 2022-12-21 | 2022-12-21 | Portable advanced geological early warning device based on phased array radar |
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| CN202223427047.5U CN218816538U (en) | 2022-12-21 | 2022-12-21 | Portable advanced geological early warning device based on phased array radar |
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