CN111817772A - Unmanned aerial vehicle detection and direction finding equipment and method - Google Patents
Unmanned aerial vehicle detection and direction finding equipment and method Download PDFInfo
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- CN111817772A CN111817772A CN202010661291.4A CN202010661291A CN111817772A CN 111817772 A CN111817772 A CN 111817772A CN 202010661291 A CN202010661291 A CN 202010661291A CN 111817772 A CN111817772 A CN 111817772A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
Abstract
The invention discloses unmanned aerial vehicle detection and direction finding equipment and method, which comprise the following steps: the detection antenna is used for receiving a radio signal transmitted by the unmanned aerial vehicle through the omnidirectional detection antenna and the frequency composite directional detection antenna; the front-end receiving module is used for amplifying the radio signals received by the detection antenna, sending the radio signals to the signal processing module and switching the omnidirectional detection antenna or the frequency composite directional detection antenna to the current channel; the signal processing module is used for analyzing and decoding the amplified radio signals and sending the acquired unmanned aerial vehicle discovery information and the acquired signal strength information to the warning module; the warning module is used for sending out corresponding warning after receiving the unmanned aerial vehicle discovery information and the signal strength information; and the power supply module is used for supplying power to the front-end receiving module, the signal processing module and the alarm module. The invention has the advantages of less antennas, simple principle, less equipment, low cost, convenient integration and miniaturization of an anti-unmanned aerial vehicle equipment system and simple and reliable direction finding function.
Description
Technical Field
The invention relates to the technical field of radio, in particular to unmanned aerial vehicle detection and direction finding equipment and method.
Background
In recent years, with the development and popularization of consumer-grade unmanned aerial vehicles, the market quantity of civil unmanned aerial vehicles is increasing, the phenomena that the unmanned aerial vehicles are illegally used are increased due to the fact that operating personnel are not good and good, the unmanned aerial vehicles interfere with social security, and cases influencing public security are rare. The unmanned aerial vehicle anti-collision system provides a new problem for security tasks of sensitive areas such as airports, nuclear power stations, army grounds and the like and large-scale conference activities, the demand of anti-unmanned aerial vehicle equipment is increasing, and the anti-unmanned aerial vehicle anti-collision equipment is produced at the same time.
The counter unmanned aerial vehicle firstly detects and discovers the unmanned aerial vehicle, and the unmanned aerial vehicle detection means mainly comprises radio detection, radar detection, photoelectric detection, sound detection and manual visual detection. The photoelectric and radar detection cost is high, and the sound detection efficiency and the manual visual detection efficiency are low.
Most unmanned aerial vehicle counter-braking equipment all adopts radio detection to give first place to in the existing market, and general radio detection can only discover unmanned aerial vehicle's radio signal, and does not possess the unmanned aerial vehicle and seek the function to, judges promptly whether to have unmanned aerial vehicle, and can not survey the position of confirming unmanned aerial vehicle. A few radio detection systems with the direction finding function need to integrate a plurality of antennas, and the equipment is heavy, large and expensive.
Disclosure of Invention
The invention aims to provide unmanned aerial vehicle detection and direction finding equipment and method, and aims to solve the problems in the prior art.
The invention provides a detection and direction-finding device for an unmanned aerial vehicle, which comprises:
the detection antenna is connected with the front end receiving module and used for receiving the radio signals transmitted by the unmanned aerial vehicle through the omnidirectional detection antenna and the frequency composite directional detection antenna;
the front-end receiving module is connected with the detection antenna and the signal processing module and is used for amplifying the radio signals received by the detection antenna, sending the radio signals to the signal processing module and switching the omnidirectional detection antenna or the frequency composite directional detection antenna to the current channel;
the signal processing module is connected with the front end receiving module, the warning module and the power supply module, and is used for analyzing and decoding the amplified radio signals and sending the acquired unmanned aerial vehicle discovery information and the acquired signal strength information to the warning module;
the warning module is connected with the signal processing module and used for sending corresponding alarms after receiving the unmanned aerial vehicle discovery information and the signal intensity information;
and the power supply module is connected with the front-end receiving module and the signal processing module and used for supplying power to the front-end receiving module, the signal processing module and the alarm module.
The invention provides a method for detecting and searching direction of an unmanned aerial vehicle, which comprises the following steps:
receiving a radio signal transmitted by the unmanned aerial vehicle through the omnidirectional detection antenna and the frequency composite directional detection antenna;
amplifying the received radio signal, sending the amplified radio signal to the signal processing module, and switching the omnidirectional detection antenna or the frequency composite directional detection antenna to the current channel;
analyzing and decoding the amplified radio signal, acquiring unmanned aerial vehicle discovery information and signal strength information and transmitting the information;
and sending out corresponding alarm after receiving the unmanned aerial vehicle discovery information and the signal strength information.
The embodiment of the invention adopts the frequency composite directional antenna, the number of the antenna is less than that of the common anti-unmanned aerial vehicle equipment, the principle is simple, the cost is low, the anti-unmanned aerial vehicle equipment system integration and miniaturization are facilitated, the simple and reliable direction finding function is provided, and the anti-unmanned aerial vehicle control accuracy can be greatly enhanced.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of an unmanned aerial vehicle detection and direction finding device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a 2.4G/5.8GHz composite directional antenna according to an embodiment of the invention;
FIG. 3 is an exemplary radiation pattern of a directional antenna of an embodiment of the present invention;
fig. 4 is a flowchart of a method for detecting and directing by an unmanned aerial vehicle according to an embodiment of the present invention.
Detailed Description
The technical solutions 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 some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Apparatus embodiment
According to an embodiment of the present invention, there is provided an apparatus for detecting and directing a direction of an unmanned aerial vehicle, fig. 1 is a schematic diagram of the apparatus for detecting and directing a direction of an unmanned aerial vehicle according to an embodiment of the present invention, as shown in fig. 1,
the embodiment of the invention comprises a detection antenna 10, a front-end receiving module 12, a signal processing module 14, an alarm module 16, a power supply module 18 and the like, wherein the detection antenna 10 comprises an omnidirectional antenna and a 2.4G/5.8GHz composite directional antenna. The unmanned aerial vehicle detection is passive detection, and the detection antenna does not emit radio signals and only receives remote control and image transmission signals of the unmanned aerial vehicle. After receiving the remote control signal of the unmanned aerial vehicle, the detection antenna 10 sends the signal to the front end receiving module 12, the front end receiving module 12 amplifies the signal and sends the signal to the signal processing module 14, the signal processing module 14 can receive the radio signal, the basic principle of a bottom layer protocol is obtained by adopting radio reverse engineering, the signal type of the radio signal is judged based on the cracking of a cognitive radio protocol, after the signal type of the radio signal is judged, the radio signal is demodulated and processed, and the signal parameters are analyzed. The signal processing module comprises an Artificial Intelligence (AI) single-module super computer, and after comparing signal parameters with a database, the signal processing module analyzes and resolves the signal parameters to determine the type of the illegally-invasive unmanned aerial vehicle and sends the type to the warning module 16, and the warning module 16 sends out warning response and has an indicator light to flash to remind an operator of detecting the unmanned aerial vehicle. AI single module supercomputers are known in the art. The power module 18 supplies power to the front end receiving module, the signal processing module and the alarm module.
The above modules will be specifically described below.
The unmanned aerial vehicle direction-finding equipment according to the embodiment of the invention specifically comprises:
the detection antenna 10 is connected with the front-end receiving module 12 and used for receiving radio signals transmitted by the unmanned aerial vehicle through the omnidirectional detection antenna and the frequency composite directional detection antenna; wherein, the omnidirectional detection antenna is a columnar antenna; the frequency composite directional detection antenna is a platy yagi-uda antenna. In the embodiment of the invention, the omnidirectional antenna and the directional antenna are used in combination, the omnidirectional antenna is used for detecting whether the unmanned aerial vehicle exists or not, and the directional antenna is used for the unmanned aerial vehicle to aim.
The probe antenna 10 specifically includes:
the omnidirectional detection antenna is connected with the front-end receiving module and used for receiving the radio signals within the coverage range in a default mode after the equipment is powered on and sending the radio signals to the front-end receiving module;
the frequency composite directional detection antenna is connected with the front-end receiving module and used for receiving radio signals of the unmanned aerial vehicles in different directions along with rotation of the equipment when the channel is switched to the detection antenna, and sending the radio signals to the front-end receiving module. In the direction finding process, a person is in a loop and is a part of equipment, and the directional antenna is endowed with different directions.
In the embodiment of the invention, the frequency composite directional detection antenna comprises: 2.4G/5.8GHz composite directional detection antenna. Specifically, the specific structure of the 2.4G/5.8GHz composite directional detection antenna is as follows: and the 2.4GHz antenna and the 5.8GHz antenna are compounded on one substrate. The 2.4GHz antenna and the 5.8GHz antenna are combined on one substrate, so that the space of the device can be saved.
Specifically, fig. 2 is a schematic diagram of a 2.4G/5.8GHz composite directional antenna according to an embodiment of the present invention; fig. 3 is a representative radiation pattern of a directional antenna of an embodiment of the present invention. As shown in fig. 2-3, in particular, the omni-directional antenna of the embodiment of the present invention has a cylindrical shape, and can receive signals from various angles. The 2.4G/5.8GHz composite directional antenna of the embodiment of the invention is plate-shaped, as shown in figure 2. The 2.4G/5.8GHz composite directional antenna of the embodiment of the invention belongs to a yagi-uda antenna and has stronger directivity. The antenna has reversibility as with most antennas, i.e., the same antenna pair can be used as both a transmitting antenna and a receiving antenna, and the same antenna has the same basic characteristic parameters for transmission or reception. The antenna pattern is an important figure for measuring the antenna performance. By antenna pattern is meant a pattern of the relative field strength of the radiated field (the signal strength of the receiving or transmitting radio) as a function of direction at a distance from the antenna. A typical radiation pattern for such an antenna is shown in fig. 3.
As can be seen from fig. 3, the relative field strength of the radiation field of the 2.4G/5.8GHz composite directional antenna in the embodiment of the present invention is strongest near the front of the antenna, that is, for the emission sources (drones) with the same distance and the same strength, the strength of the signal of the drone located near the front of the antenna received by the antenna is strongest. In contrast, when there is an unmanned aerial vehicle with a certain signal strength at a certain distance, the 2.4G/5.8GHz composite directional antenna of the embodiment of the present invention is directed to different directions, the received signal strength is different, and when the antenna is directed to the vicinity of the direction where the unmanned aerial vehicle is located, the signal strength received by the antenna is strongest. By combining the characteristics, the embodiment of the invention can utilize the human-in-loop, namely, the hand-held equipment rotates to enable the antenna to face different directions, so as to realize the general direction finding of the unmanned aerial vehicle detection, and can also enable the equipment to rotate through the rotating mechanism to enable the antenna to face different directions, so as to realize the general direction finding of the unmanned aerial vehicle detection.
It should be noted that the directional antenna is not limited to 2.4GHz and 5.8GHz, and other frequency bands, such as 900MHz, may be added as required.
A front end receiving module 12, connected to the detecting antenna 10 and the signal processing module 14, for amplifying the radio signal received by the detecting antenna, and sending the radio signal to the signal processing module, so as to switch the omnidirectional detecting antenna or the frequency composite directional detecting antenna to the current channel; that is, the front-end receiving module 12 may switch the access of the omni-directional antenna and the directional antenna. The front-end receiving module 12 has both channel switching and signal amplifying functions
The signal processing module 14 is connected with the front-end receiving module 12, the warning module 16 and the power module 18, and is configured to analyze and decode the amplified radio signal, and send the acquired discovery information and signal strength information of the unmanned aerial vehicle to the warning module; the signal processing module 14 is specifically configured to:
the method comprises the steps of judging the signal type of a radio signal of an omnidirectional detection antenna, determining the signal type of the radio signal, demodulating the radio signal according to the signal type, analyzing signal parameters, comparing the signal parameters with a database, analyzing and resolving, determining the model of the unmanned aerial vehicle, and sending unmanned aerial vehicle discovery information to an alarm module;
and demodulating, decoding and analyzing the radio signal of the frequency composite directional detection antenna, and sending the acquired signal strength information to an alarm module.
The warning module 16 is connected with the signal processing module 14 and is used for sending out corresponding alarms after receiving the unmanned aerial vehicle discovery information and the signal strength information; specifically, when the direction is being sought, the warning module 16 reflects the received signal strength with different frequencies of warning sounds and flashing warning lights, indicating the direction of the unmanned aerial vehicle.
The alert module 16 includes at least one of:
the LED lamp is connected with the signal processing module and used for indicating whether the unmanned aerial vehicle is detected or not through the light-on and indicating the strength of the detected radio signal through the frequency of the light-on;
the buzzer is connected with the signal processing module and used for indicating whether the unmanned aerial vehicle is detected or not through buzzing and indicating the strength of the detected radio signal through the buzzing size and frequency;
the display screen can be the OLED screen, is connected with signal processing module for when detecting unmanned aerial vehicle, show unmanned aerial vehicle's model, whether detect unmanned aerial vehicle and the radio signal's that detects intensity through digit or signal check demonstration. That is to say, the warning sounds and the light signals with different frequencies can also be displayed in the manner of numbers or signal grid lighting quantity display with different sizes.
And the power supply module 18 is connected with the front-end receiving module 12 and the signal processing module 14 and is used for supplying power to the front-end receiving module 12, the signal processing module 14 and the alarm module 16.
In addition, in the embodiment of the invention, the omnidirectional detection antenna and the frequency composite directional detection antenna are fixed on the nylon support through the nylon stud, the distance between the omnidirectional detection antenna and the frequency composite directional detection antenna and the distance between the antenna and the wall surface of the glass fiber reinforced plastic antenna housing are not less than the preset distance, an antenna connecting plate is arranged between the glass fiber reinforced plastic antenna housing and the machine shell, shielding is formed between the antenna and the machine shell, and the antenna connecting plate is made of aluminum alloy materials.
The general direction finding of the unmanned aerial vehicle detection according to the embodiment of the invention is described in detail below with reference to the accompanying drawings.
Firstly, the antenna of the equipment faces a certain direction, after the equipment is powered on, the equipment is defaulted to be connected with the omnidirectional antenna to be connected with the front-end receiving module, the omnidirectional antenna is used for detecting firstly, after a radio signal in a coverage range is received, the radio signal is amplified by the front-end receiving module and then sent to the signal processing module, the signal processing module is used for demodulating, decoding and analyzing characteristics of the signal, whether the signal is an unmanned aerial vehicle or not is judged, if the signal is judged to be the unmanned aerial vehicle, the signal is sent to the warning module, the warning module sends out an acousto-optic early warning. At the moment, an operator can manually switch to a direction-finding function, a 2.4G/5.8GHz composite directional antenna is communicated with a front-end receiving module and is detected by the directional antenna, the operator can hold the equipment to slowly rotate in situ to enable the directional antenna to face different directions, or can rotate the equipment through a rotating mechanism to enable the antenna to face different directions, unmanned aerial vehicle signals received by the directional antenna are sent to a signal processing module through the front-end receiving module in the process, the signal processing module demodulates, decodes and analyzes the signals, and sends corresponding signals to an alarm module according to the strength of the signals received by the directional antenna, the alarm module sends sounds with different frequencies and the alarm lamp flickers, the stronger the unmanned aerial vehicle signals are, the higher the alarm sound frequency is, the higher the flickering frequency of the alarm lamp is, the direction with the highest alarm sound frequency and the highest flickering frequency of the alarm lamp in one circle is the approximate direction in which the unmanned aerial vehicle is located, the general direction finding of unmanned aerial vehicle detection is realized.
Method embodiment
According to an embodiment of the present invention, there is provided a method for detecting and locating a direction of an unmanned aerial vehicle, which can be used in the above apparatus, fig. 4 is a flowchart of the method for detecting and locating a direction of an unmanned aerial vehicle according to an embodiment of the present invention, and as shown in fig. 4, the method specifically includes the following steps:
step 401, receiving a radio signal transmitted by an unmanned aerial vehicle through an omnidirectional detection antenna and a frequency composite directional detection antenna; in step 401, after the device is powered on, the omni-directional detection antenna receives a radio signal within a coverage range by default; when the channel is switched to the detection antenna, the frequency composite directional detection antenna receives radio signals of the unmanned aerial vehicles in different directions along with the rotation of the equipment. Wherein, the frequency composite directional detection antenna is: 2.4G/5.8GHz composite directional detection antenna. That is to say, in the embodiment of the present invention, the omnidirectional antenna is used in combination with the directional antenna, the omnidirectional antenna is used for detecting whether the unmanned aerial vehicle exists, and the directional antenna is used for the unmanned aerial vehicle to aim at. In practical application, in the directional antenna direction finding process, a person is in a loop and is a part of equipment, and the directional antenna can be endowed with different directions.
Specifically, fig. 2 is a schematic diagram of a 2.4G/5.8GHz composite directional antenna according to an embodiment of the present invention; fig. 3 is a representative radiation pattern of a directional antenna of an embodiment of the present invention. As shown in fig. 2-3, in particular, the omni-directional antenna of the embodiment of the present invention has a cylindrical shape, and can receive signals from various angles. The 2.4G/5.8GHz composite directional antenna of the embodiment of the invention is plate-shaped, as shown in figure 2. The 2.4G/5.8GHz composite directional antenna of the embodiment of the invention belongs to a yagi-uda antenna and has stronger directivity. The antenna has reversibility as with most antennas, i.e., the same antenna pair can be used as both a transmitting antenna and a receiving antenna, and the same antenna has the same basic characteristic parameters for transmission or reception. The antenna pattern is an important figure for measuring the antenna performance. By antenna pattern is meant a pattern of the relative field strength of the radiated field (the signal strength of the receiving or transmitting radio) as a function of direction at a distance from the antenna. A typical radiation pattern for such an antenna is shown in fig. 3.
As can be seen from fig. 3, the relative field strength of the radiation field of the 2.4G/5.8GHz composite directional antenna in the embodiment of the present invention is strongest near the front of the antenna, that is, for the emission sources (drones) with the same distance and the same strength, the strength of the signal of the drone located near the front of the antenna received by the antenna is strongest. In contrast, when there is an unmanned aerial vehicle with a certain signal strength at a certain distance, the 2.4G/5.8GHz composite directional antenna of the embodiment of the present invention is directed to different directions, the received signal strength is different, and when the antenna is directed to the vicinity of the direction where the unmanned aerial vehicle is located, the signal strength received by the antenna is strongest. By combining the characteristics, the embodiment of the invention utilizes the rotation of a person in a loop, namely, a hand-held device, to enable the antenna to face different directions, thereby realizing the general direction finding of the unmanned aerial vehicle detection.
It should be noted that the directional antenna is not limited to 2.4GHz and 5.8GHz, and other frequency bands, such as 900MHz, may be added as required.
Step 402, amplifying the received radio signal, sending the amplified radio signal to a signal processing module, and switching the omnidirectional detection antenna or the frequency composite directional detection antenna to the current channel;
step 403, analyzing and decoding the amplified radio signal, acquiring and sending discovery information and signal strength information of the unmanned aerial vehicle; in step 403, performing signal type judgment on the radio signal of the omnidirectional detection antenna, determining the signal type of the radio signal, demodulating the radio signal according to the signal type, analyzing the signal parameters, comparing the signal parameters with a database, performing analysis and calculation, determining the model of the unmanned aerial vehicle, acquiring unmanned aerial vehicle discovery information, and transmitting the information; and demodulating, decoding and analyzing the radio signal of the frequency composite directional detection antenna, acquiring and sending signal strength information.
And step 404, after receiving the unmanned aerial vehicle discovery information and the signal strength information, sending out a corresponding alarm.
In step 404, whether the unmanned aerial vehicle is detected or not can be indicated by lighting of the LED lamp, and the strength of the detected radio signal can be indicated by the frequency of lighting; whether the unmanned aerial vehicle is detected can be indicated through the buzzing of the buzzer, and the strength of the detected radio signal can be indicated through the buzzing size and frequency; can also show unmanned aerial vehicle's model and communication frequency channel when detecting unmanned aerial vehicle through the display screen to show through digit or signal check whether detect unmanned aerial vehicle and the radio signal's that detects strong and weak.
In addition, in the embodiment of the present invention, an external terminal may be connected through a set network interface to perform device upgrade or data export.
The general direction finding of the unmanned aerial vehicle detection according to the embodiment of the invention is described in detail below with reference to the accompanying drawings.
Firstly, the antenna of the equipment faces a certain direction, after the equipment is powered on, the equipment is defaulted to be connected with the omnidirectional antenna to be connected with the front-end receiving module, the omnidirectional antenna is used for detecting firstly, after a radio signal in a coverage range is received, the radio signal is amplified by the front-end receiving module and then sent to the signal processing module, the signal processing module is used for demodulating, decoding and analyzing characteristics of the signal, whether the signal is an unmanned aerial vehicle or not is judged, if the signal is judged to be the unmanned aerial vehicle, the signal is sent to the warning module, the warning module sends out an acousto-optic early warning. At the moment, an operator can manually switch to a direction-finding function, a 2.4G/5.8GHz composite directional antenna is communicated with a front-end receiving module and is detected by the directional antenna, the operator can hold the equipment to slowly rotate in situ to enable the directional antenna to face different directions, or can rotate the equipment through a rotating mechanism to enable the antenna to face different directions, unmanned aerial vehicle signals received by the directional antenna are sent to a signal processing module through the front-end receiving module in the process, the signal processing module demodulates, decodes and analyzes the signals, and sends corresponding signals to an alarm module according to the strength of the signals received by the directional antenna, the alarm module sends sounds with different frequencies and the alarm lamp flickers, the stronger the unmanned aerial vehicle signals are, the higher the alarm sound frequency is, the higher the flickering frequency of the alarm lamp is, the direction with the highest alarm sound frequency and the highest flickering frequency of the alarm lamp in one circle is the approximate direction in which the unmanned aerial vehicle is located, the general direction finding of unmanned aerial vehicle detection is realized.
In summary, the embodiment of the invention adopts the 2.4G/5.8GHz composite directional antenna, the number of the antennas is less than that of the common anti-unmanned aerial vehicle, the principle is simple, the cost is low, the anti-unmanned aerial vehicle equipment system integration and miniaturization are facilitated, the simple and reliable direction finding function is provided, and the anti-unmanned aerial vehicle control accuracy is greatly enhanced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides an unmanned aerial vehicle surveys and seeks to equipment, its characterized in that sets up in the equipment casing:
the detection antenna is connected with the front end receiving module and used for receiving the radio signals transmitted by the unmanned aerial vehicle through the omnidirectional detection antenna and the frequency composite directional detection antenna;
the front-end receiving module is connected with the detection antenna and the signal processing module and is used for amplifying the radio signals received by the detection antenna, sending the radio signals to the signal processing module and switching the omnidirectional detection antenna or the frequency composite directional detection antenna to the current channel;
the signal processing module is connected with the front end receiving module, the warning module and the power supply module, and is used for analyzing and decoding the amplified radio signals and sending the acquired unmanned aerial vehicle discovery information and the acquired signal strength information to the warning module;
the warning module is connected with the signal processing module and used for sending corresponding alarms after receiving the unmanned aerial vehicle discovery information and the signal intensity information;
and the power supply module is connected with the front-end receiving module and the signal processing module and used for supplying power to the front-end receiving module, the signal processing module and the alarm module.
2. The device according to claim 1, characterized in that said probe antenna comprises in particular:
the omnidirectional detection antenna is connected with the front-end receiving module and used for receiving the radio signals within the coverage range in a default mode after the equipment is powered on and sending the radio signals to the front-end receiving module;
the frequency composite directional detection antenna is connected with the front end receiving module and used for receiving radio signals of unmanned aerial vehicles in different directions along with rotation of equipment and sending the radio signals to the front end receiving module when a channel is switched to the detection antenna.
3. The apparatus of claim 2, wherein the frequency complex directional sounding antenna is: 2.4G/5.8GHz composite directional detection antenna; the 2.4G/5.8GHz composite directional detection antenna has the specific structure that: and the 2.4GHz antenna and the 5.8GHz antenna are compounded on one substrate.
4. The device of claim 2, wherein the signal processing module is specifically configured to:
the method comprises the steps of judging the signal type of a radio signal of an omnidirectional detection antenna, determining the signal type of the radio signal, demodulating the radio signal according to the signal type, analyzing signal parameters, comparing the signal parameters with a database, analyzing and resolving, determining the model of the unmanned aerial vehicle, and sending unmanned aerial vehicle discovery information to an alarm module;
and demodulating, decoding and analyzing the radio signal of the frequency composite directional detection antenna, and sending the acquired signal strength information to an alarm module.
5. The device of claim 1, wherein the alert module comprises at least one of:
the LED lamp is connected with the signal processing module and used for indicating whether the unmanned aerial vehicle is detected or not through the light-on and indicating the strength of the detected radio signal through the frequency of the light-on;
the buzzer is connected with the signal processing module and used for indicating whether the unmanned aerial vehicle is detected or not through buzzing and indicating the strength of the detected radio signal through the buzzing size and frequency;
the display screen, with signal processing module connects for when detecting unmanned aerial vehicle, show unmanned aerial vehicle's model and communication frequency channel, whether detect unmanned aerial vehicle and the radio signal's that detects power through digit or signal check demonstration.
6. An unmanned aerial vehicle detection and direction finding method is characterized in that,
receiving a radio signal transmitted by the unmanned aerial vehicle through the omnidirectional detection antenna and the frequency composite directional detection antenna;
amplifying the received radio signal, sending the amplified radio signal to the signal processing module, and switching the omnidirectional detection antenna or the frequency composite directional detection antenna to the current channel;
analyzing and decoding the amplified radio signal, acquiring unmanned aerial vehicle discovery information and signal strength information and transmitting the information;
and sending out corresponding alarm after receiving the unmanned aerial vehicle discovery information and the signal strength information.
7. The method of claim 6, wherein receiving the radio signal transmitted by the drone through the omni-directional probe antenna and the frequency composite directional probe antenna specifically comprises:
the omnidirectional detection antenna receives radio signals within a coverage range by default after the equipment is powered on;
when the channel is switched to the detection antenna, the frequency composite directional detection antenna receives radio signals of the unmanned aerial vehicles in different directions along with the rotation of the equipment.
8. The method of claim 7, wherein the frequency composite directional sounding antenna is: 2.4G/5.8GHz composite directional detection antenna.
9. The method according to claim 7, wherein the analyzing and decoding the amplified radio signal to obtain the discovery information and the signal strength information of the drone and sending the discovery information and the signal strength information specifically comprises:
the method comprises the steps of judging the signal type of a radio signal of an omnidirectional detection antenna, determining the signal type of the radio signal, demodulating the radio signal according to the signal type, analyzing signal parameters, comparing the signal parameters with a database, analyzing and resolving, determining the model of the unmanned aerial vehicle, acquiring unmanned aerial vehicle discovery information and sending the information;
and demodulating, decoding and analyzing the radio signal of the frequency composite directional detection antenna, acquiring and sending signal strength information.
10. The method of claim 6, wherein issuing the corresponding alert after receiving the drone discovery information and the signal strength information specifically comprises:
whether the unmanned aerial vehicle is detected is indicated through the lighting of the LED lamp, and the strength of the detected radio signal is indicated through the frequency of the lighting; and/or
Whether the unmanned aerial vehicle is detected is indicated through the buzzing of the buzzer, and the strength of the detected radio signal is indicated through the buzzing size and frequency; and/or
Show unmanned aerial vehicle's model and communication frequency channel when detecting unmanned aerial vehicle through the display screen to show through digit or signal check whether detect unmanned aerial vehicle and the radio signal's that detects strong and weak.
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