Fixed type decoy equipment and navigation decoy system

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, in particular to fixed type decoy equipment and a navigation decoy system, and the fixed type decoy equipment comprises a holding pole, a decoy host, an omnidirectional antenna and a directional antenna; the omnidirectional antenna is arranged on the holding pole; the directional antenna is arranged on one side, deviating from the omnidirectional antenna, of the holding pole in the direction from the omnidirectional antenna to the holding pole; the decoy host is electrically connected with the omnidirectional antenna and the directional antenna, and the decoy host is used for outputting decoy signals to the omnidirectional antenna and / or the directional antenna so as to output the decoy signals based on the omnidirectional antenna and the directional antenna. Through the above structure, the omni-directional antenna and the directional antenna cooperate with each other to output a decoy signal, thereby realizing omni-directional decoy of the unmanned aerial vehicle to leave.

Description

[Technical field]

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to a fixed decoy device and a navigation decoy system. [Background technology]

[0002] The navigation deception system transmits a virtual global positioning signal, tricking drones into receiving a designated, imaginary location. This deceives the drone's internal positioning device and, based on a database of restricted and no-fly zones, forces the drone to make an emergency landing, undergo a restricted altitude, or fly away in a designated direction, thereby achieving intelligent defense. This effectively counters drone swarm attacks, enabling all-weather active defense. With its low milliwatt-level transmission power, low cost, and universal applicability, it is suitable for key protected areas and large public venues.

[0003] Currently, most of the fixed navigation decoy equipment on the market is placed on the ground or in residential buildings, and is affected by various obstructions. The decoy distance and effect are far from the ideal value, and the effect of decoying and driving away various drones is not good. [Utility Model Content]

[0004] The embodiments of the present invention provide a fixed decoy device and a navigation decoy system, which are intended to solve the technical problem in the prior art that the navigation decoy system is blocked and cannot decoy the drone to leave in all directions.

[0005] In order to solve the above technical problems, a technical solution adopted by the embodiment of the present utility model is: providing a fixed deception device, including a holding pole, a deception host, an omnidirectional antenna and a directional antenna;

[0006] The omnidirectional antenna is arranged on the holding pole;

[0007] Along the direction from the omnidirectional antenna to the pole, the directional antenna is arranged on a side of the pole away from the omnidirectional antenna;

[0008] The decoy host is electrically connected to the omnidirectional antenna and the directional antenna, and is used to output a decoy signal to the omnidirectional antenna and / or the directional antenna, so as to output a decoy signal based on the omnidirectional antenna and the directional antenna.

[0009] Optionally, the holding pole includes a fixed pole and a telescopic pole, and the telescopic pole is telescopically arranged on the fixed pole;

[0010] The omnidirectional antenna and the directional antenna are both arranged on the telescopic rod;

[0011] The decoy host is arranged on the fixing rod.

[0012] Optionally, the omnidirectional antenna is used to output a decoy signal within a first field of view angle;

[0013] The directional antenna is used to output a decoy signal within a second field of view angle;

[0014] Wherein, the first field of view angle is α, the second field of view angle is β, the first field of view angle and the second field of view angle do not overlap at least partially, and α + β ≥ 360°.

[0015] Optionally, the decoy host includes a signal generator, a processing module, an adjustment module, and a coupling module;

[0016] The signal generator is connected to the processing module, the processing module is connected to the adjustment module, the adjustment module is connected to the coupling module, the adjustment module is also connected to the omnidirectional antenna, and the coupling module is connected to the directional antenna;

[0017] The processing module is configured to receive the decoy signal output by the signal generator and process the decoy signal;

[0018] The adjustment module is configured to adjust the processed decoy signal to output a decoy signal with a preset intensity to the omnidirectional antenna;

[0019] The coupling module is configured to obtain the decoy signal with the preset intensity and output the signal to the directional antenna.

[0020] Optionally, the processing module includes a first power divider, a filter, and a second power divider, wherein the filter includes a first filter, a second filter, a third filter, and a load;

[0021] The first power divider includes one input and four outputs, the one input is connected to the signal generator, and the four outputs are respectively connected to the first filter, the second filter, the third filter, and the load;

[0022] The second power divider includes four inputs and one output, the four inputs are respectively connected to the first filter, the second filter, the third filter, and the load, and the one output is connected to the adjustment module.

[0023] Optionally, the adjustment module includes a first low-noise amplifier and an adjustable attenuator;

[0024] The first low-noise amplifier is connected to the second power divider, the adjustable attenuator is connected to the first low-noise amplifier, and the adjustable attenuator is also used to connect to the omnidirectional antenna and the coupling module.

[0025] Optionally, the decoy host further includes a second low-noise amplifier;

[0026] The second low noise amplifier is connected to the omnidirectional antenna and the adjustable attenuator respectively.

[0027] Optionally, the coupling module is a microstrip line coupling circuit.

[0028] Optionally, the gain of the directional antenna is greater than the gain of the omnidirectional antenna.

[0029] In order to solve the above technical problems, another technical solution adopted by the embodiment of the present invention is: to provide a navigation deception system, which includes the fixed deception device as described above, and the fixed deception device is used to output a deception signal to control the drone to leave the current area through the deception signal.

[0030] Different from the related art, the present invention provides a fixed decoy device and navigation decoy system. The fixed decoy device includes a pole, a decoy host, an omnidirectional antenna, and a directional antenna. The omnidirectional antenna is mounted on the pole. The directional antenna is mounted on the side of the pole facing away from the omnidirectional antenna, extending from the omnidirectional antenna to the pole. The decoy host is electrically connected to the omnidirectional antenna and the directional antenna, and is configured to output a decoy signal to the omnidirectional antenna and / or the directional antenna, thereby outputting a decoy signal based on the omnidirectional and directional antennas. Through this structure, the omnidirectional and directional antennas work together to output decoy signals, thereby omnidirectionally decoying drones.

Brief Description of the Drawings

[0031] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0032] Figure 1 It is a schematic diagram of an application scenario of the navigation deception system provided by an embodiment of the present utility model;

[0033] Figure 2 This is a schematic diagram of a fixed deception device provided by an embodiment of the present utility model;

[0034] Figure 3 is a schematic diagram of a decoy signal viewing angle provided by an embodiment of the present utility model;

[0035] Figure 4 is a schematic diagram of a fixed deception device provided by another embodiment of the present utility model;

[0036] Figure 5 This is a structural block diagram of a decoy host provided by an embodiment of the present utility model;

[0037] Figure 6 It is a structural block diagram of a decoy host provided by another embodiment of the present utility model.

Specific Embodiments

[0038] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0039] The technical features involved in the various embodiments of the present application described below do not conflict with each other and can be combined with each other.

[0040] When an element is expressed as "connected" to another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween.

[0041] The terms "first", "second", etc. in the description and claims of the present utility model are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type and do not limit the number of objects. For example, the first object can be one or more.

[0042] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0043] Please refer to Figure 1 , Figure 1 which is a schematic diagram of an application scenario of a navigation decoy system provided by an embodiment of the present utility model. As Figure 1As shown, the application scenario includes a navigation decoy system 1 and a drone 2, wherein the navigation decoy system 1 includes a fixed decoy device 100; the fixed decoy device 100 is set on the ground or in a residential building, etc., and the fixed decoy device 100 is mainly used to send a decoy signal to the drone 2, so that the drone 2 leaves the current area based on the decoy signal. Based on this, the drone 2 can be prevented from flying into the restricted area. The decoy signal refers to a GNSS (Global Navigation Satellite System) signal, which is an airborne radio navigation and positioning system that can provide users with all-weather three-dimensional coordinates, speed and time information at any location on the surface of the earth or in near-Earth space. Based on this, in actual applications, a virtual GNSS signal is sent in real time by the fixed decoy device 100, so that the drone 2 receives the virtual location information and leaves the current area based on the location information.

[0044] For further information, see Figure 2 , Figure 2 This is a schematic diagram of a fixed deception device provided by an embodiment of the present utility model. Figure 2 As shown, the fixed decoy device 100 includes a pole 10, a decoy host 20, an omnidirectional antenna 30 and a directional antenna 40;

[0045] The omnidirectional antenna 30 is arranged on the holding pole 10; along the direction from the omnidirectional antenna 30 to the holding pole 10, the directional antenna 40 is arranged on a side of the holding pole 10 away from the omnidirectional antenna 30;

[0046] The decoy host 20 is electrically connected to the omnidirectional antenna 30 and the directional antenna 40 , and the decoy host 20 is used to output a decoy signal to the omnidirectional antenna 30 and / or the directional antenna 40 , so as to output a decoy signal based on the omnidirectional antenna 30 and the directional antenna 40 .

[0047] Specifically, when the fixed decoy device 100 outputs a decoy signal, the presence of the mast 10 blocks the omnidirectional antenna 30 from outputting the decoy signal in the direction of the mast 10. This creates a blind spot for the decoy signal and prevents it from omnidirectionally deceiving the drone 2. Therefore, by introducing the directional antenna 40 and positioning it away from the omnidirectional antenna 30, the decoy signal is output even in the blind spot of the omnidirectional antenna 30, thereby achieving omnidirectional decoy of the drone 2.

[0048] In another embodiment, the gain of the directional antenna 40 is greater than that of the omnidirectional antenna 30. Therefore, through the directional antenna 40, the intensity of the decoy signal can also be greatly increased. It should be noted that the antenna gain is mainly used to measure the ability of the antenna to concentrate and radiate the input power, reflecting the strength of the antenna's ability to radiate or receive electromagnetic waves in a specific direction. That is, by setting the directional antenna 40, the intensity of the decoy signal can be increased at the same frequency, thereby expanding the driving distance of the fixed decoy device 100. Preferably, the gain of the omnidirectional antenna 30 is 3 dBi, and the gain of the directional antenna 40 is 14 dBi.

[0049] In some embodiments, after the decoy host 20 outputs a decoy signal, the omnidirectional antenna 30 will receive the decoy signal and output the decoy signal within the first field of view; the directional antenna 40 will output the decoy signal within the second field of view. Wherein, as Figure 3 shown, the first field of view is α, the second field of view is β, the first field of view and the second field of view at least partially do not overlap, and α + β ≥ 360°. Based on this, the decoy signal can be output omnidirectionally, solving the problem of the pole 10 blocking the omnidirectional antenna 30.

[0050] In some embodiments, please refer to Figure 4 , Figure 4 which is a schematic diagram of a fixed decoy device provided by another embodiment of the present invention. As Figure 4 shown, the pole 10 includes a telescopic rod 11 and a fixed rod 12, and the telescopic rod 11 is telescopically arranged on the fixed rod 12; the omnidirectional antenna 30 and the directional antenna 40 are both arranged on the telescopic rod 11; the decoy host 20 is arranged on the fixed rod 12.

[0051] Among them, through the combination of the telescopic rod 11 and the fixed rod 12, the height of the fixed decoy device 100 can be increased, so as to output the decoy signal without dead angle by using the high altitude, thereby improving the reliability of the fixed decoy device 100.

[0052] Furthermore, please refer to Figure 5 , Figure 5 which is a structural block diagram of the decoy host provided by the embodiment of the present invention. As Figure 5 shown, the decoy host 20 includes a signal generator 21, a processing module 22, an adjustment module 23, and a coupling module 24;

[0053] The signal generator 21 is connected to the processing module 22, the processing module 22 is connected to the adjustment module 23, the adjustment module 23 is connected to the coupling module 24, the adjustment module 23 is also connected to the omnidirectional antenna 30, and the coupling module 24 is connected to the directional antenna 40;

[0054] The processing module 22 is configured to receive the spoofing signal output by the signal generator 21 and process the spoofing signal;

[0055] The adjustment module 23 is configured to adjust the processed spoofing signal to output a spoofing signal with a preset intensity to the omnidirectional antenna 30;

[0056] The coupling module 24 is configured to obtain the spoofing signal with the preset intensity and output the signal to the directional antenna 40.

[0057] Specifically, when the fixed spoofing device 100 operates, the signal generator 21 will output a spoofing signal in real time and output the spoofing signal to the processing module 22, so that the processing module 22 processes the spoofing signal, thereby improving the quality of the spoofing signal. After processing the spoofing signal, the processing module 22 will output the spoofing signal to the adjustment module 23, so that the adjustment module 23 adjusts the intensity of the spoofing signal, thereby outputting a spoofing signal with a preset intensity to the omnidirectional antenna 30. Among them, when the spoofing signal is adjusted by the adjustment module 23, the coupling module 24 will also couple out another spoofing signal from the adjusted spoofing signal and output the other spoofing signal to the directional antenna 40, so that the directional antenna 40 synchronously outputs the spoofing signal. It should be noted that the coupling module 24 is mainly a component that couples the power on one line to another line. Among them, the amplitudes of the two coupled signals can be equal or unequal.

[0058] In some embodiments, the signal generator 21 is mainly configured to output GNSS-related signals (spoofing signals), so that the fixed spoofing device 100 sends virtual position signals to the unmanned aerial vehicle 2 based on the GNSS signals, thereby controlling the unmanned aerial vehicle 2 to leave the current range.

[0059] In another embodiment, the signal generator 21 is a DAC chip, and the DAC chip is mainly configured to receive virtual position information. Among them, the virtual position information is a digital signal. After the DAC signal receives the virtual position signal, it converts the digital signal into an analog signal and outputs it. Preferably, the model of the signal generator 21 can be DAC9163. It should be noted that in some other embodiments, the signal generator 21 can also be other models of chips with the same function as DAC9163.

[0060] In some embodiments, the coupling module 24 is a microstrip line coupling circuit, which is composed of two parallel and closely placed microstrip lines, and mainly realizes signal transmission and distribution through the coupling of electromagnetic fields. Among them, the first line in the microstrip line coupling circuit is the main microstrip line, which is mainly connected to the adjustment module 23 and the omnidirectional antenna 30 respectively, and the second line is the coupling microstrip line, which is mainly connected to the directional antenna 40. When the adjustment module 23 outputs a spoofing signal with a preset intensity, the main microstrip line will transmit the spoofing signal to the omnidirectional antenna 30; at the same time, the coupling microstrip line will couple the spoofing signal to the directional antenna 40. Based on this, the omnidirectional antenna 30 and the directional antenna 40 can output spoofing signals simultaneously.

[0061] In still other embodiments, the coupling module 24 can also be a directional coupler, which is respectively connected to the adjustable attenuator 232 and the directional antenna 40. Among them, the directional coupler is a general microwave / millimeter wave component, which mainly distributes microwave signals according to a certain ratio. Preferably, the directional coupler can be composed of microstrip lines, waveguides, coaxial cables, or strip lines, etc.

[0062] In some embodiments, please refer to Figure 6 , Figure 6 is a structural block diagram of a spoofing host provided by another embodiment of the present invention. As Figure 6 shown, the processing module 22 includes a first power divider 221, a filter 222, and a second power divider 223. Among them, the filter 222 includes a first filter 2221, a second filter 2222, a third filter 2223, and a load 2224;

[0063] The first power divider 221 includes one input and four outputs. The one input is connected to the signal generator 21, and the four outputs are respectively connected to the first filter 2221, the second filter 2222, the third filter 2223, and the load 2224;

[0064] The second power divider 223 includes four inputs and one output. The four inputs are respectively connected to the first filter 2221, the second filter 2222, the third filter 2223, and the load 2224, and the one output is connected to the adjustment module 23.

[0065] It can be known that the power divider is mainly used to divide an input signal into two or more signals with equal or unequal energy for output; it can also combine two or more input signals into one signal for output. At this time, the power divider is also a combiner. Optionally, the models of the first power divider 221 and the second power divider 223 are SCA-4-20+. Among them, the first power divider 221 and the second power divider 223 can also be chips of other models with the same function.

[0066] Specifically, the first power divider 221 mainly divides the spoofing signal into four signals and then inputs them into the corresponding filters 222 respectively to filter the spoofing signals of different frequencies, so as to remove the noise in the spoofing signals and improve the quality of the spoofing signals. After filtering the spoofing signals of different frequencies, the spoofing signals are input into the second power divider 223 to combine the four spoofing signals into one signal for output. Optionally, the model of the first filter 2221 is TA1658A, and its operating frequency is 1582.40HZ; the model of the second filter 2222 is TA1227BBB, and its operating frequency is 1227HZ; the model of the third filter 2223 is TA2493A, and its operating frequency is 2493HZ. Based on this, different models of filters can be used to filter the spoofing signals of different energies, so as to improve the quality of the spoofing signals. It can be known that the first filter 2221, the second filter 2222, and the third filter 2223 are mainly used to filter signals of different frequencies. Therefore, in some embodiments, the first filter 2221, the second filter 2222, and the third filter 2223 can also be filters with other operating frequencies.

[0067] In some embodiments, the load 2224 is a resistor, and the resistance value of the resistor is 50 ohms. Among them, the resistance value of the resistor is not limited to 50 ohms, and the resistance value of the resistor can be changed according to different requirements.

[0068] Furthermore, since the power divider is mainly used to change one signal into several signals for output, and there will be attenuation in each signal. Therefore, after the spoofing signal is output through the second power divider 223, in order to improve the gain of the spoofing signal, an amplifier needs to be added to amplify the attenuated spoofing signal.

[0069] Among them, as Figure 6 shown, the adjustment module 23 includes a first low-noise amplifier 231 and an adjustable attenuator 232;

[0070] The first low noise amplifier 231 is connected to the processing module 22 , the adjustable attenuator 232 is connected to the first low noise amplifier 231 , and the adjustable attenuator 232 is further used to connect the omnidirectional antenna 30 and the coupling module 24 .

[0071] It should be noted that because the amplifier itself significantly interferes with the signal, a low-noise amplifier (LNA) is introduced to reduce the amplifier's interference with the decoy signal, thereby reducing the amplifier's interference with the signal and improving the signal-to-noise ratio of the decoy signal. Optionally, the first LNA 231 is a model HMC311LP3. In other embodiments, the first LNA 231 may also be a LNA with the same functionality as the HMC311LP3.

[0072] Furthermore, the model of the adjustable attenuator 232 is RFSA3613. In other embodiments, the adjustable attenuator 232 may also be an attenuator having the same function as the RFSA3613.

[0073] In some embodiments, as Figure 6 As shown, the decoy host 23 also includes a second low-noise amplifier 26. The second low-noise amplifier 26 is connected to the omnidirectional antenna 30 and the adjustable attenuator 232, respectively. Optionally, the model of the second low-noise amplifier 26 is PHA-23LN+. In other embodiments, the second low-noise amplifier 26 can also have the same functions as the PHA-23LN+.

[0074] The combination of the second low noise amplifier 26 and the adjustable attenuator 232 can meet the signal strength requirements in different scenarios.

[0075] The present invention provides a fixed decoy device, comprising a pole, a decoy host, an omnidirectional antenna, and a directional antenna. The omnidirectional antenna is mounted on the pole. The directional antenna is mounted on the side of the pole facing away from the omnidirectional antenna, along the direction from the omnidirectional antenna to the pole. The decoy host is electrically connected to the omnidirectional antenna and the directional antenna, and is configured to output a decoy signal to the omnidirectional antenna and / or the directional antenna, thereby outputting a decoy signal based on the omnidirectional and directional antennas. Through this structure, the omnidirectional and directional antennas cooperate to output decoy signals, thereby achieving omnidirectional decoy of drones.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; under the idea of the present utility model, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present utility model as described above. For the sake of brevity, they are not provided in detail; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application.

Claims

1. A fixed decoy device, characterized in that, Including pole, decoy host, omnidirectional antenna and directional antenna; The omnidirectional antenna is arranged on the holding pole; Along the direction from the omnidirectional antenna to the pole, the directional antenna is arranged on a side of the pole away from the omnidirectional antenna; The decoy host is electrically connected to the omnidirectional antenna and the directional antenna, and is used to output a decoy signal to the omnidirectional antenna and / or the directional antenna, so as to output a decoy signal based on the omnidirectional antenna and the directional antenna.

2. The fixed decoy device according to claim 1, characterized in that, The holding pole includes a fixed pole and a telescopic pole, and the telescopic pole is telescopically arranged on the fixed pole; The omnidirectional antenna and the directional antenna are both arranged on the telescopic rod; The decoy host is arranged on the fixing rod.

3. The fixed decoy device according to claim 1, wherein, The omnidirectional antenna is used to output a decoy signal within a first field of view; The directional antenna is used to output a decoy signal within a second field of view; The first field of view angle is α, the second field of view angle is β, the first field of view angle and the second field of view angle at least partially do not overlap, and α+β≥360°.

4. The fixed decoy device according to claim 1, wherein The decoy host includes a signal generator, a processing module, a regulating module and a coupling module; The signal generator is connected to the processing module, the processing module is connected to the adjustment module, the adjustment module is connected to the coupling module, the adjustment module is also connected to the omnidirectional antenna, and the coupling module is connected to the directional antenna; The processing module is used to receive the decoy signal output by the signal generator and process the decoy signal; The adjustment module is used to adjust the processed decoy signal to output a decoy signal of a preset strength to the omnidirectional antenna; The coupling module is used to obtain the decoy signal of the preset strength and output the signal to the directional antenna.

5. The fixed decoy device according to claim 4, wherein The processing module includes a first power divider, a filter and a second power divider, wherein the filter includes a first filter, a second filter, a third filter and a load; The first power divider includes one input and four outputs, the one input is connected to the signal generator, and the four outputs are respectively connected to the first filter, the second filter, the third filter and the load; The second power distributor includes four inputs and one output, the four inputs are respectively connected to the first filter, the second filter, the third filter and the load, and the one output is connected to the regulating module.

6. The fixed decoy device according to claim 5, characterized in that, The adjustment module includes a first low noise amplifier and an adjustable attenuator; The first low-noise amplifier is connected to the second power divider, the adjustable attenuator is connected to the first low-noise amplifier, and the adjustable attenuator is also used to connect the omnidirectional antenna and the coupling module.

7. The fixed decoy device according to claim 6, characterized in that, The decoy host further includes a second low noise amplifier; The second low noise amplifier is connected to the omnidirectional antenna and the adjustable attenuator respectively.

8. The fixed decoy device according to claim 4, characterized in that, The coupling module is a microstrip line coupling circuit.

9. The fixed decoy device according to any one of claims 1-8, characterized in that, The gain of the directional antenna is greater than the gain of the omnidirectional antenna.

10. A navigation deception system, characterized in that, The navigation deception system includes a fixed deception device as described in any one of claims 1 to 9, and the fixed deception device is used to output a deception signal to control the drone to leave the current area through the deception signal.

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