CN115865261A - Unmanned aerial vehicle multi-interference-mode interference unit - Google Patents
Unmanned aerial vehicle multi-interference-mode interference unit Download PDFInfo
- Publication number
- CN115865261A CN115865261A CN202211499185.6A CN202211499185A CN115865261A CN 115865261 A CN115865261 A CN 115865261A CN 202211499185 A CN202211499185 A CN 202211499185A CN 115865261 A CN115865261 A CN 115865261A
- Authority
- CN
- China
- Prior art keywords
- interference
- frequency
- noise
- bpf
- vco
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Noise Elimination (AREA)
Abstract
The invention discloses an unmanned aerial vehicle multi-interference mode interference unit, which comprises a baseband noise signal source, an amplifier and a first VCO (voltage controlled oscillator), and a programmable waveform generator, a first BPF (band-pass filter), a mixer and a second BPF which are sequentially connected together, wherein the first VCO and the second BPF are connected with a microwave switch combiner selector, the combiner selector is connected with a power amplifier, the baseband noise signal source is connected with the microwave switch combiner selector through an MCU (microprogrammed control unit), and the programmable waveform generator is communicated with the MCU; when the microwave switch combiner selector is switched on, the first VCO is used for outputting random interference noise; when the microwave switch combiner selector is switched on to the second BPF, outputting dot frequency interference noise or frequency sweeping interference noise; random voltage noise of the baseband noise signal source is applied to the voltage control terminal of the first VCO. This MCU passes through microwave switch combiner selector and selects random interference pattern or point frequency interference, and frequency sweep interference pattern is disturbed with the combination, and the interference pattern is various, can adapt to multiple unmanned aerial vehicle interference, and efficiency is higher.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicle countermeasures, in particular to an unmanned aerial vehicle multi-interference mode interference unit.
Background
The unmanned aerial vehicle counter-braking system enables the unmanned aerial vehicle to trigger a protection mechanism to automatically return or land by transmitting a radio frequency interference signal.
At present, most of existing unmanned aerial vehicle interferors generate an interference signal of an interference frequency band through a VCO (voltage controlled oscillator), a high-power transmission blocking type interference unmanned aerial vehicle needs to be provided with a large-capacity storage battery due to high-power transmission, the interference is serious in heating during working, high in power consumption, short in continuous working time, single in interference mode and low in interference efficiency.
Disclosure of Invention
The invention aims to provide an unmanned aerial vehicle multi-interference-mode interference unit, which can generate corresponding interference signals according to the carrier frequency of an unmanned aerial vehicle in actual use, has various interference modes, can adapt to various unmanned aerial vehicle interferences and has higher efficiency.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an unmanned aerial vehicle multi-interference mode interference unit comprises a baseband noise signal source, an amplifier, a first VCO (voltage controlled oscillator), a programmable waveform generator, a first BPF (band-pass filter), a mixer and a second BPF, which are sequentially connected together, wherein the first VCO and the second BPF are connected with a microwave switch combiner selector, the combiner selector is connected with a power amplifier, the baseband noise signal source is connected with the microwave switch combiner selector through an MCU (microprogrammed control unit), and the programmable waveform generator is communicated with the MCU;
when the microwave switch combiner selector is switched on, the first VCO is used for outputting random interference noise;
when the microwave switch combiner selector is switched on to the second BPF, outputting dot frequency interference noise or frequency sweeping interference noise;
and when random interference occurs, random voltage noise of the baseband noise signal source is applied to the voltage control end of the first VCO to generate a noise frequency modulation signal.
The dot frequency interference noise or the sweep frequency interference noise is realized by controlling the special chip AD9910 of the frequency mixer through the MCU.
Further optimization, random interference noise is interference signals with random frequencies generated in a target frequency range, the target frequency is annihilated, the signal-to-noise ratio is also reduced, and suppression on normal communication is formed,
the dot-frequency interference noise aims at a target frequency to output an interference signal under the condition that the target frequency is known, and a suppression effect on target communication is generated.
The frequency scanning interference noise is frequency scanning in a target frequency range, and when the collision probability of the interference signal frequency and the communication frequency reaches a certain value, the signal-to-noise ratio of communication is affected, so that the error rate is increased, and effective interference is generated.
Further optimization, the AD9910 adopts an SPI port for control, and the AD9910 adopts a Ramped FSK mode to generate frequency sweeping signals.
Compared with the prior art, the invention has the following beneficial effects:
the microwave switch combining selector is characterized by mainly comprising a baseband noise signal source, an amplifier and a first VCO which are connected together in sequence, and a programmable waveform generator, a first BPF, a mixer and a second BPF which are connected together in sequence, wherein the first VCO and the second BPF are connected with a microwave switch combining selector, the combining selector is connected with a power amplifier, the baseband noise signal source is connected with the microwave switch combining selector through an MCU, and the programmable waveform generator is communicated with the MCU; the MCU selects a random interference mode or dot frequency interference, a frequency sweep interference mode and combined interference through the microwave switch combining selector, the interference modes are various, the MCU can adapt to interference of various unmanned aerial vehicles, and the efficiency is higher.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a waveform diagram of output dot frequency interference noise according to the present invention.
Fig. 2 is a waveform diagram of the output swept-frequency interference noise of the present invention.
FIG. 3 is a waveform diagram of the output random interference noise of the present invention.
Fig. 4 is an overall schematic block diagram of the present invention.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art would recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive; embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example one
The embodiment discloses an unmanned aerial vehicle multi-interference mode interference unit, which comprises a baseband noise signal source, an amplifier and a first VCO (voltage controlled oscillator), as well as a programmable waveform generator, a first BPF (band-pass filter), a mixer and a second BPF, which are sequentially connected together, wherein the first VCO and the second BPF are connected with a microwave switch combiner selector, the combiner selector is connected with a power amplifier, the baseband noise signal source is connected with the microwave switch combiner selector through an MCU (microprogrammed control unit), and the programmable waveform generator is communicated with the MCU;
when the microwave switch combiner selector is switched on, the first VCO is used for outputting random interference noise;
when the microwave switch combiner selector is switched on to the second BPF, outputting dot frequency interference noise or sweep frequency interference noise;
and when random interference occurs, random voltage noise of the baseband noise signal source is applied to the voltage control end of the first VCO to generate a noise frequency modulation signal.
Wherein, MCU is little the control unit (singlechip), VCO is voltage controlled oscillator, BPF is band-pass filter.
The dot frequency interference noise or the sweep frequency interference noise is realized by controlling a special chip AD9910 of the frequency mixer through the MCU; random interference noise is an interference signal that generates a random frequency within a target frequency range, annihilates the target frequency, and also reduces the signal-to-noise ratio, forming a squelch of normal communications,
the dot-frequency interference noise aims at a target frequency to output an interference signal under the condition that the target frequency is known, and a suppression effect on target communication is generated.
The frequency scanning interference noise is frequency scanning in a target frequency range, and when the collision probability of the interference signal frequency and the communication frequency reaches a certain value, the signal-to-noise ratio of communication is influenced, so that the error rate is increased, and effective interference is generated.
The AD9910 adopts an SPI (serial peripheral interface) for control, and the AD9910 adopts a Ramped FSK (frequency sweeping frequency Shift keying) mode to generate frequency sweeping signals.
This MCU passes through microwave switch combiner selector and selects random interference pattern or point frequency interference, and frequency sweep interference pattern is disturbed with the combination, and the interference pattern is various, can adapt to multiple unmanned aerial vehicle interference, and efficiency is higher.
The invention can generate 3 signals in practical use: random interference noise, dot frequency interference noise and sweep frequency interference noise; generating a corresponding interference signal according to the working carrier frequency of the unmanned aerial vehicle, and simultaneously selecting a random interference mode or a point frequency interference, a sweep frequency interference mode and a combined interference by the MCU through a microwave switch combining selector; realize the switch of microwave switch combiner selector through MCU, its transmitting power is little, and the consumption is little, and the battery of configuration is just little, and complete machine weight reduction 1/3, portable, the interference pattern is various, can adapt to multiple unmanned aerial vehicle interference, and efficiency is higher.
The invention generates 3 interference signals: random interference, dot frequency interference and frequency sweep interference, and a fourth signal can be formed by combining in actual use; the random interference is generated by FPGA, the dot frequency interference and the sweep frequency interference are generated based on the control of the single chip microcomputer on the DDS chip AD9910, and the whole system is flexible and efficient to control. The test result shows that the system can accurately generate the required interference signal and meet the requirements of various unmanned aerial vehicle interferences. Although the interference signal that this design produced is located the unmanned aerial vehicle frequency channel, such circuit structure also can be used to other frequency channels, for example cell-phone communication frequency channel, therefore this circuit structure is to the application of other frequency channels also have the reference meaning.
Testing random interference, dot frequency interference and swept frequency interference modes, wherein the structures of the random interference, the dot frequency interference and the swept frequency interference modes are shown in figures 1-3; according to the test, all three signals meet the requirements.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
The present invention should be considered as limited only by the preferred embodiments and not by the specific details, but rather as limited only by the accompanying drawings, and as used herein, is intended to cover all modifications, equivalents and improvements falling within the spirit and scope of the invention.
Claims (6)
1. The utility model provides an unmanned aerial vehicle interference pattern interference unit that disturbs more which characterized in that: the microwave switch combination selector comprises a baseband noise signal source, an amplifier, a first VCO (voltage controlled oscillator), a programmable waveform generator, a first BPF (band-pass filter), a mixer and a second BPF, which are sequentially connected together, wherein the first VCO and the second BPF are connected with a microwave switch combination selector;
when the microwave switch combiner selector is switched on, the first VCO is used for outputting random interference noise;
when the microwave switch combiner selector is switched on to the second BPF, outputting dot frequency interference noise or frequency sweeping interference noise;
and when random interference occurs, random voltage noise of the baseband noise signal source is applied to the voltage control end of the first VCO to generate a noise frequency modulation signal.
2. A drone multi-interference pattern jammer according to claim 1, characterized in that: the dot frequency interference noise or the sweep frequency interference noise is realized by controlling the special chip AD9910 of the frequency mixer through the MCU.
3. The drone multi-interference mode jammer of claim 1, wherein: random interference noise is an interference signal that generates a random frequency within a target frequency range, and annihilates the target frequency, which also reduces the signal-to-noise ratio, and suppresses normal communications.
4. The drone multi-interference mode jammer of claim 1, wherein: the dot frequency interference noise is an interference signal which is output by aiming at a target frequency under the condition that the target frequency is known, and a suppression effect on target communication is generated.
5. The drone multi-interference mode jammer of claim 1, wherein: the frequency scanning interference noise is frequency scanning in a target frequency range, and when the collision probability of the interference signal frequency and the communication frequency reaches a certain value, the signal-to-noise ratio of communication is influenced, so that the error rate is increased, and effective interference is generated.
6. A drone multi-interference pattern jammer according to claim 2, characterized in that: the AD9910 adopts an SPI port, and the AD9910 adopts a Ramped FSK mode to generate frequency sweep signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211499185.6A CN115865261A (en) | 2022-11-28 | 2022-11-28 | Unmanned aerial vehicle multi-interference-mode interference unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211499185.6A CN115865261A (en) | 2022-11-28 | 2022-11-28 | Unmanned aerial vehicle multi-interference-mode interference unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115865261A true CN115865261A (en) | 2023-03-28 |
Family
ID=85667030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211499185.6A Pending CN115865261A (en) | 2022-11-28 | 2022-11-28 | Unmanned aerial vehicle multi-interference-mode interference unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115865261A (en) |
-
2022
- 2022-11-28 CN CN202211499185.6A patent/CN115865261A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1083680C (en) | A method and apparatus for testing a base station in a time division multiple access radio communications system | |
| WO2010147712A2 (en) | A frequency selection method to mitigate in-band interference from inter-modulation spur of the collocated radio transmitter | |
| CN112865832B (en) | Ground observation whistle ultrashort wave over-the-horizon information transmission equipment and transmission method | |
| CN111917424B (en) | Low-emission broadband noise no-load short-wave radio station and implementation method thereof | |
| CN103905087B (en) | Wide interval frequency hopping radio-frequency receiving system | |
| CN111697979B (en) | Mobile terminal | |
| CN106487417A (en) | TV based on WiFi chip white frequency spectrum jamproof system and method | |
| CN101262300B (en) | Chaos interference system for chaos synchronization | |
| CN108449158B (en) | Multi-subband random gating pressing type interference source generation device and method | |
| CN115865261A (en) | Unmanned aerial vehicle multi-interference-mode interference unit | |
| CN112887051A (en) | Unmanned aerial vehicle remote control signal interference unit and use method thereof | |
| CN204948060U (en) | A kind of multichannel high selectivity transmitting-receiving microwave components | |
| CN103905075B (en) | Wide interval frequency hopping radio-frequency system | |
| CN115664460A (en) | Frequency hopping communication system and method based on electromagnetic interference | |
| CN116418365A (en) | Modulator-demodulator based on in-band frequency hopping system | |
| CN216356719U (en) | Transceiver, chip, system on chip and chip system for increasing 2.4GHz frequency band communication distance | |
| CN212783822U (en) | Dipole antenna with variable gain | |
| CN210954325U (en) | High-frequency broadband signal source | |
| CN100571429C (en) | A kind of GSM/CDMA dual-mode terminal and method of improving the CDMA receiving sensitivity | |
| CN108964683B (en) | Radio frequency transceiver circuit and mobile terminal | |
| Kolumbán et al. | Feasibility of UWB radio: Impulse radio versus chaos-based approach | |
| CN112763986A (en) | Radar communication integrated information distribution system | |
| CN201577089U (en) | Wide frequency band radio frequency front end module | |
| CN109347595A (en) | A kind of interference information screen method and shielding harness for concerning security matters region | |
| CN216905312U (en) | UWB remote control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |