CN111107573A - Intelligent jammer semi-physical simulation experiment system and method based on USRP - Google Patents
Intelligent jammer semi-physical simulation experiment system and method based on USRP Download PDFInfo
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- CN111107573A CN111107573A CN201911218573.0A CN201911218573A CN111107573A CN 111107573 A CN111107573 A CN 111107573A CN 201911218573 A CN201911218573 A CN 201911218573A CN 111107573 A CN111107573 A CN 111107573A
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- jammer
- service transmission
- usrp
- intelligent
- receiving end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/06—Testing, supervising or monitoring using simulated traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3912—Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
- H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
Abstract
The invention discloses a USRP-based intelligent jammer semi-physical simulation experiment system and an experiment method, wherein the system comprises a service transmission transmitting end, a service transmission receiving end and an intelligent jammer, wherein the service transmission transmitting end, the service transmission receiving end and the intelligent jammer are all composed of a computer, a USRP RIO and an antenna; the service transmission sending end and the service transmission receiving end respectively run a transmitting program and a receiving program of the communication efficiency testing system, after normal stable communication is established, the intelligent jammer is started to scan a frequency band of 1.3 GHz-3.7 GHz, the working frequency and the bandwidth of a communication signal in the frequency band are detected according to the scanning result, multi-tone or broadband noise is automatically generated, and then illegal communication in the environment is interfered, so that a communication link is damaged. The invention can realize automatic monitoring of electromagnetic spectrum environment and active release of interference signals, reduce development period and cost, and play a good role in promoting dynamic spectrum planning management.
Description
Technical Field
The invention belongs to the field of wireless communication interference, and particularly relates to an intelligent jammer semi-physical simulation experiment system and an intelligent jammer semi-physical simulation experiment method based on USRP.
Background
With the frequent emergence of unmanned aerial vehicles in recent years flying into airport areas and disturbing normal airport communication transactions, radio security and management control are brought into the sight of people. The security agency no longer focuses on the visible region and turns the eye to the invisible region, the radio spectrum. The reasonable use of the wireless communication frequency band can bring convenience to life, but the use beyond the regulation causes a plurality of troubles, such as breaking the progress of a major confidential conference, disturbing the fairness and the fairness of the examination, damaging the normal flight task of an airport and the like. How to interfere with illegal communication and block communication in the field of wireless communication becomes a concern.
The traditional solution for dealing with black fly includes throwing net capture, laser damage and sound wave interference, and the above solutions have the problems of large potential safety hazard, short action distance, unobvious effect and the like. Meanwhile, the anti-unmanned machine gun in the market mainstream also has the problems of excessive dependence on manpower, low intellectualization, limited application scene and the like.
Under the circumstances, the intelligent jammer is accepted by researchers, changes the conventional fixed wireless communication interference means, and realizes intellectualization, modularization and multi-scenario. However, the current interference detection system is only limited to a software simulation tool and is separated from the actual spectrum environment, so that the intuitive simulation effect and strong persuasion are lacked.
Disclosure of Invention
The invention aims to provide a USRP-based intelligent jammer semi-physical simulation experiment system and an intelligent jammer semi-physical simulation experiment method, which are used for representing the effect of wireless communication interference in a real frequency spectrum environment in a more real form in a semi-physical form.
The technical solution for realizing the purpose of the invention is as follows: a semi-physical simulation experiment system of an intelligent jammer based on USRP comprises a service transmission transmitting end, a service transmission receiving end and the intelligent jammer, wherein the service transmission transmitting end comprises a first computer, a first USRP RIO and a transmitting end antenna;
a first computer of a service transmission sending end modulates service data to obtain a baseband data stream, transmits the baseband data stream to a first USRP RIO through a PCI-E board card, and the first USRP RIO performs frequency conversion processing on the baseband data to obtain a radio frequency signal which is sent by a sending end antenna;
the service transmission receiving end receives the radio frequency signal through a receiving end antenna, the second USRP RIO processes the radio frequency signal to obtain a baseband data stream, and the baseband data stream is transmitted back to a second computer of the service transmission receiving end through the PCI-E board card;
the intelligent jammer detects the communication frequency band of the service transmission system through the receiving antenna connected to the third USRP RIO, and the transmitting antenna sends an interference signal to be applied to the service transmission frequency band.
A semi-physical simulation experiment method for an intelligent jammer comprises the following steps:
firstly, monitoring the periodicity of a local frequency spectrum environment by an intelligent jammer;
secondly, sending the suspicious communication frequency points monitored currently to a computer of an intelligent jammer;
thirdly, the intelligent interference machine generates interference signals to release the interference signals to the detected frequency points;
and fourthly, the service transmission receiving end is interfered, and the main interface of the service transmission receiving end displays the constellation diagram and the transmission error rate of the current receiver.
Compared with the prior art, the invention has the following remarkable advantages: the invention can realize automatic monitoring of electromagnetic spectrum environment and active release of interference signals, can carry out performance verification on different spectrum detection algorithms, various interference signals and interference modes, reduces development period and cost, and plays a good role in promoting dynamic spectrum planning management.
Drawings
Fig. 1 is a schematic view of the principle of the present invention.
Fig. 2 is a schematic diagram of a service delivery originating primary interface.
Fig. 3 is a schematic diagram of a service transmission receiving end main interface.
Fig. 4 is a schematic diagram of a smart jammer main interface.
Detailed Description
As shown in fig. 1, an intelligent jammer semi-physical simulation experiment system based on USRP comprises a service transmission transmitting end, a service transmission receiving end and an intelligent jammer, wherein the service transmission transmitting end comprises a first computer, a first USRP RIO and a transmitting end antenna, the service transmission receiving end comprises a second computer, a second USRP RIO and a receiving end antenna, and the intelligent jammer comprises a third computer, a third USRP RIO, a receiving antenna and a transmitting antenna;
a first computer of a service transmission sending end modulates service data to obtain a baseband data stream, transmits the baseband data stream to a first USRP RIO through a PCI-E board card, and the first USRP RIO performs frequency conversion processing on the baseband data to obtain a radio frequency signal which is sent by a sending end antenna;
the service transmission receiving end receives the radio frequency signal through a receiving end antenna, the second USRP RIO processes the radio frequency signal to obtain a baseband data stream, and the baseband data stream is transmitted back to a second computer of the service transmission receiving end through the PCI-E board card;
the intelligent jammer detects the communication frequency band of the service transmission system through the receiving antenna connected to the third USRP RIO, and sends an interference signal to be applied to the service transmission frequency band through the transmitting antenna, so that the purpose of interfering the service transmission is achieved. The service transmission system comprises a service transmission transmitting end and a service transmission receiving end.
The intelligent jammer scans and monitors the current spectrum environment in real time in a preset scanning frequency band, and finds out a communication frequency band to be interfered. The preset scanning frequency range is 1.3 GHz-3.7 GHz.
The intelligent jammer releases single tone, multi-tone, and broadband noise signals automatically or manually.
The service transmission receiving end is also used for displaying the instantaneous power spectrum, the instantaneous detection frequency and the bandwidth.
The interference signal parameters support real-time modification, wherein the interference signal parameters include interference modes and interference noise types, the interference modes are divided into automatic and manual modes, and the interference noise types include single tone, multi-tone and broadband noise signals.
The invention also provides an experimental method based on the intelligent jammer semi-physical simulation experimental system, which comprises the following steps:
firstly, monitoring the periodicity of a local frequency spectrum environment by an intelligent jammer;
secondly, sending the suspicious communication frequency points which are detected currently to a computer of the intelligent jammer;
thirdly, the intelligent interference machine generates interference signals to release the interference signals to the detected frequency points;
and fourthly, the service transmission receiving end is interfered, and the main interface of the service transmission receiving end displays the constellation diagram and the transmission error rate of the current receiver.
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Examples
The schematic diagram of the construction principle of the invention is shown in figure 1. The service transmission originating computer modulates the service data to be transmitted to obtain a baseband data stream, transmits the data to be transmitted to the USRP RIO through the PCI-E bus, and the USRP RIO processes the baseband data to obtain a radio frequency signal and transmits the radio frequency signal through the connected originating antenna. The main interface of traffic transmission is shown in fig. 2.
And the service transmission receiving end computer processes the received radio frequency signal through a receiving end antenna connected with the USRP RIO to obtain a baseband data stream, and then transmits the received data back to the computer through the PCI-E to simulate a normal communication link. The traffic transmission terminating end is shown in fig. 3.
The main interface of the intelligent jammer is shown in fig. 4, and includes a spectrum monitoring sub-module, an interference signal generating module, and an interference mode selecting module. The intelligent interference machine obtains a wireless communication frequency band under the current frequency spectrum environment through a frequency spectrum detection algorithm, generates an interference signal to the frequency band to be interfered through manually or automatically selecting an interference mode, and further achieves the purpose of destroying communication.
The experimental method of the semi-physical simulation experimental system comprises the following steps:
the first step is as follows: according to a simulation task, utilizing a LabVIEW graphic programming language to compile intelligent jammer software, wherein the intelligent jammer software comprises a main interface, a frequency spectrum monitoring submodule, a jamming signal generating module and a jamming mode selecting module; meanwhile, the interference detection software written at the service receiving end comprises a main interface and a video transmission error detection module; the video transmission error detection module is used for displaying the currently interfered communication quality;
the second step is that: the intelligent jammer frequency spectrum monitoring submodule monitors the periodicity of a local frequency spectrum environment;
the third step: the intelligent jammer frequency spectrum monitoring submodule sends suspicious communication frequency points which are found to be monitored currently to an intelligent jammer upper computer;
the fourth step: an interference signal generating module of the intelligent jammer generates an interference signal to release the interference signal to the detected frequency point; allowing for automatic generation of polyphonic or wideband noise, or can be adapted to be generated manually.
The fifth step: the service transmission receiving end is interfered, and the main interface of the service receiving end displays the constellation diagram and the transmission error rate of the current receiver.
Claims (7)
1. A semi-physical simulation experiment system of an intelligent jammer based on USRP is characterized by comprising a service transmission transmitting end, a service transmission receiving end and the intelligent jammer, wherein the service transmission transmitting end comprises a first computer, a first USRP RIO and a transmitting end antenna;
a first computer of a service transmission sending end modulates service data to obtain a baseband data stream, transmits the baseband data stream to a first USRP RIO through a PCI-E board card, and the first USRP RIO performs frequency conversion processing on the baseband data to obtain a radio frequency signal which is sent by a sending end antenna;
the service transmission receiving end receives the radio frequency signal through a receiving end antenna, the second USRP RIO processes the radio frequency signal to obtain a baseband data stream, and the baseband data stream is transmitted back to a second computer of the service transmission receiving end through the PCI-E board card;
the intelligent jammer detects the communication frequency band of the service transmission system through the receiving antenna connected to the third USRP RIO, and the transmitting antenna sends an interference signal to be applied to the service transmission frequency band.
2. The USRP-based intelligent jammer semi-physical simulation experiment system according to claim 1, wherein the intelligent jammer scans and monitors the current spectrum environment in real time in a preset scanning frequency band to find out a communication frequency band to be interfered.
3. The USRP-based intelligent jammer semi-physical simulation experiment system according to claim 2, wherein the preset scanning frequency band is 1.3 GHz-3.7 GHz.
4. The USRP-based intelligent jammer semi-physical simulation experiment system of claim 1 wherein the intelligent jammer automatically or manually releases single tone, multi-tone and wideband noise signals.
5. The USRP-based intelligent jammer semi-physical simulation experiment system according to claim 1, wherein the service transmission receiving end is further used for displaying an instantaneous power spectrum, an instantaneous detection frequency and a bandwidth.
6. The USRP-based intelligent jammer semi-physical simulation experiment system of claim 1 wherein the jammer parameters support real-time modification, wherein the jammer parameters include jammer modes and jammer noise types, the jammer modes are classified into automatic and manual modes, and the jammer noise types include single tone, multi-tone, and wideband noise signals.
7. An experimental method based on the intelligent jammer semi-physical simulation experimental system of claim 1, characterized by comprising the following steps:
firstly, monitoring the periodicity of a local frequency spectrum environment by an intelligent jammer;
secondly, sending the suspicious communication frequency points monitored currently to a computer of an intelligent jammer;
thirdly, the intelligent interference machine generates interference signals to release the interference signals to the detected frequency points;
and fourthly, the service transmission receiving end is interfered, and the main interface of the service transmission receiving end displays the constellation diagram and the transmission error rate of the current receiver.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115412105A (en) * | 2022-05-06 | 2022-11-29 | 南京邮电大学 | Reinforcement learning communication interference method based on USRP RIO |
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| CN104363596A (en) * | 2014-11-20 | 2015-02-18 | 中国人民解放军总参谋部第六十三研究所 | Dynamic spectrum management semi-physical simulation experiment system and method based on USRP |
| CN107911833A (en) * | 2017-10-30 | 2018-04-13 | 深圳无线电检测技术研究院 | A kind of air interference test method and system |
| CN108513650A (en) * | 2017-07-31 | 2018-09-07 | 深圳市大疆创新科技有限公司 | Interfere control method, equipment and the interference system of unmanned plane |
| CN209299273U (en) * | 2019-02-21 | 2019-08-23 | 中国人民解放军火箭军工程大学 | A kind of distributed jammers group |
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- 2019-12-03 CN CN201911218573.0A patent/CN111107573B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104363596A (en) * | 2014-11-20 | 2015-02-18 | 中国人民解放军总参谋部第六十三研究所 | Dynamic spectrum management semi-physical simulation experiment system and method based on USRP |
| CN108513650A (en) * | 2017-07-31 | 2018-09-07 | 深圳市大疆创新科技有限公司 | Interfere control method, equipment and the interference system of unmanned plane |
| CN107911833A (en) * | 2017-10-30 | 2018-04-13 | 深圳无线电检测技术研究院 | A kind of air interference test method and system |
| CN209299273U (en) * | 2019-02-21 | 2019-08-23 | 中国人民解放军火箭军工程大学 | A kind of distributed jammers group |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115412105A (en) * | 2022-05-06 | 2022-11-29 | 南京邮电大学 | Reinforcement learning communication interference method based on USRP RIO |
| CN115412105B (en) * | 2022-05-06 | 2024-03-12 | 南京邮电大学 | Reinforced learning communication interference method based on USRP RIO |
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