CN109525357A - Method based on the Communication Jamming confrontation that spectrum signature extracts - Google Patents
Method based on the Communication Jamming confrontation that spectrum signature extracts Download PDFInfo
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- CN109525357A CN109525357A CN201811363726.6A CN201811363726A CN109525357A CN 109525357 A CN109525357 A CN 109525357A CN 201811363726 A CN201811363726 A CN 201811363726A CN 109525357 A CN109525357 A CN 109525357A
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- frequency point
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- spectrum signature
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
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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
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
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Abstract
The invention discloses a kind of communication countermeasure methods extracted based on spectrum signature, including carry out full band scan, obtain spectrum signature information corresponding to each frequency point in the frequency range；It determines the corresponding interference frequency point of maximum energy value, interference is sent according to jamming bandwidth and interference frequency point；While emitting interference, holding is scanned full frequency band, the frequency point of scanning eliminates interference frequency point: when the absolute value for finding the difference of maximum energy value of maximum energy value and interference frequency point is more than or equal to preset threshold value, rescaning, otherwise keeps interference.The present invention interferes accuracy rate and more efficient, and the method for the Communication Jamming confrontation extracted based on spectrum signature intelligently interfered channel, military aspect in practical applications are widely used, and realize the interference in communication aspects to enemy.
Description
Technical field
The present invention relates to the perception of the radio frequency features in cognition wireless electrical domain and extractive techniques, and in particular to one kind is based on
Spectrum signature extracts the communication countermeasure method realized.
Background technique
As the communication between the fast-developing and various equipment of wireless communication is more and more frequent, especially military aspect,
It needs in many cases dynamically, and accurately interference enemy communication, this just needs the radio communication to other side to carry out
Investigation, measures its technical parameter, uses radio interference means appropriate accordingly, goes the radio for destroying and upsetting place logical
Letter.Implement effective communication countermeasure, communication, the command ability in place can be reduced.
And wherein most basic technical principle is exactly cognition wireless electric theory.In usable spectrum scarcity of resources, and utilization rate
In the case where low, cognitive radio technology is received significant attention, can from the time, frequency and spatially carry out multidimensional intelligence
Detecting, study, machine inference, optimization, the performance of multitask and concurrent processing and application.
Important component of the communication countermeasure as electronic countermeasure, its research field have been extended to from the point of view of wave band
All communication bands of light wave；It include the radio wave propagations mode such as sky wave, earthwave, space wave from the point of view of the mode of communication；Including
The modulation systems such as amplitude modulation, frequency modulation, phase modulation, single-side belt；Not only included the analogue communications such as speech, phone but also there are the digital communications such as TV.
From the point of view of Military Application, including tactical communication and strategic communicaton, also, all military radio communications are all communication countermeasure
Object.
How to improve interference accuracy rate and validity and how to make interfere frequency point with the channel variation of communication party and
Changing becomes the realistic problem for needing to solve.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of communication countermeasure side for extracting and realizing based on spectrum signature, packet
It includes:
Step 1: carrying out full band scan, obtain spectrum signature information corresponding to each frequency point in the frequency range；
Step 2: each frequency point and amplitude being saved as into two groups of identical 2 dimension groups, is compared by array, is misplaced to amplitude
Subtract each other, i.e. the amplitude of later group subtracts the amplitude of previous group, obtains each group of difference, then save as new array, and in new array
In find out maximum value, be indexed in former array by the corresponding position of maximum value, i.e., acquisition maximum two arrays of difference
Corresponding frequency point determines jamming bandwidth, determines the corresponding interference frequency point of maximum energy value, according to jamming bandwidth and interference frequency
Point sends interference；
Step 3: while emitting interference, holding is scanned full frequency band, and the frequency point of scanning eliminates interference frequency point:
When the absolute value of discovery maximum energy value and the difference for the maximum energy value for interfering frequency point is more than or equal to preset threshold value
When, it goes to step 1 and rescans, otherwise keep interference.
In above technical scheme, maximum value is found out in new array, through the corresponding position of maximum value in former array
The method being indexed are as follows: find out maximum value it is first group corresponding in the corresponding frequency point Fm3 of minuend.
Further, it is determined that the method for jamming bandwidth interference frequency point corresponding with maximum energy value is determined is that new array is removed
Go maximum value, search second largest value in new array, and index second largest value it is first group corresponding in the corresponding frequency point Fm4 of minuend,
Using the absolute value of the difference of frequency point Fm3 and frequency point Fm4 as bandwidth, the mean value conduct interference frequency point of frequency point Fm3 and frequency point Fm4.
In above technical scheme, when using energy feature, every KB energy is RMS average value, and energy average every time
Measuring number is 10；When using amplitude characteristic, directly take two o'clock intermediate value as the frequency point of interference signal.
In above technical scheme, communication equipment both sides can also be chosen and just established the moment frequency spectrum reaction of communication as frequency
Spectrum signature, to distinguish the transceiver of communicating pair, convenient for the accurate interference of next step.
In above technical scheme, it is preferable that the optional mono-tone interference of conflicting mode and multitone jamming.
Advantageous effects of the invention: the present invention interferes accuracy rate and more efficient, and channel is intelligently interfered
Method based on the Communication Jamming confrontation that spectrum signature extracts, military aspect in practical applications is widely used, real
Present interference of the communication aspects to enemy.
Detailed description of the invention
Fig. 1 is that the method for the present invention specific embodiment disturbs countercheck flow chart.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.Conflicting mode is selected, is communicated in multitone jamming with single-frequency
Number interference in select one；
Step 1: frequency spectrum perception；By the scanning to frequency range, extracts the feature of frequency spectrum and preserve；
Step 2: comparison decision；By the frequency point preserved and the corresponding range value of each frequency point, array is saved as；
Step 2-1: the data in the array of preservation are removed into the 0th pair of data, save as array 1, then will be in former array
Data remove the 9999th pair of data, save as array 2, such as have an array to have 5 groups of data respectively [0,2], [1,3], [2,
6], [3,4], [4.3], removing the 0th pair to save as array 1 then is [1,3], and [2,6], [3,4], [4.3] remove the 5th pair of preservation
It is then [0,2], [1,3], [2,6], [3,4] for array 2；
Step 2-2: array 1 and the data of opposite position in array 2 are made the difference, obtained difference is saved as to new number
Group 3；According to the example of step 3-1, array is [0,1], [1,3], [2.2], [3,1] at this time
Step 2-3: finding a maximum value in array 3, and indexes out a frequency point Fm3；According to previous step example, this
When maximum value be 3, be 6 to subtract 3 and obtain, be at this time 2 as frequency point corresponding to the 6 of minuend；
Step 2-4: removing Fm3 in array 3, then finds out a maximum value, and indexes out a frequency point Fm4, approximate at this time
Effective jamming bandwidth is the absolute value of two frequency point differences, and interference frequency point Fm2 is the intermediate value of two value of frequency point.Difference variation is maximum
The frequency range of the local information that comes into existence, is 2 according to previous step second largest value, is 4 absolute values for subtracting 6, and 4 pairs as minuend
The frequency point answered is 3, this Time Bandwidth is then that the absolute value of frequency point 2 and frequency point 3 is equal to 1, and interfering frequency point is that 2 and 3 intermediate value is
2.5。
Step 3: transmitting interference；
Step 3-1: it needs jamming bandwidth and interference frequency point to send a victim emitter for what is obtained, makes transmitter in phase
Frequency point is answered to emit interference signal；
Step 3-2: while emitting interference, holding is scanned full frequency band, and the frequency point scanned at this time eliminates step
Frequency point in rapid 3:
Step 3-3: it is carried out by the corresponding energy feature repetition index of frequency point obtained in the previous step, and with the thresholding α of setting
Compare, if more than the thresholding, then stop interfering, and return step 1, rescan, if being less than the thresholding, keeps interfering.
In specific embodiment, setting communication frequency point, such as 705MHZ makes to communicate double hairs and starts to communicate, opens intelligence communication pair
Whether anti-platform, the frequency point whether observing interface can measure communicating pair at this time is 705MHZ, can if it can, observing communication party again
It normally receives and sends accurately message, if it is not, explanation interference at this time is successful, then communication frequency point is changed into difference
Frequency point such as 715MHZ, then observe the platform can intelligence follow communication frequency point transformation switch oneself interference frequency point continue to send
Interference signal.
After the completion of test, it is found that the intelligence communication extracted based on spectrum signature confrontation platform effectively and can be carried out accurately
Interference determines frequency interference compared to common, and method of the invention helps to improve the accuracy and success rate of interference.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of communication countermeasure method extracted based on spectrum signature, characterized by comprising:
Step 1: carrying out full band scan, obtain spectrum signature information corresponding to each frequency point in the frequency range；
Step 2: each frequency point and amplitude being saved as into two groups of identical 2 dimension groups, is compared by array, dislocation phase is carried out to amplitude
Subtract, i.e. the amplitude of later group subtracts the amplitude of previous group, obtains each group of difference, then save as new array, and in new array
Maximum value is found out, is indexed in former array by the corresponding position of maximum value, is i.e. acquisition difference maximum two arrays institute
Corresponding frequency point determines jamming bandwidth, determines the corresponding interference frequency point of maximum energy value, according to jamming bandwidth and interference frequency point
Send interference；
Step 3: while emitting interference, holding is scanned full frequency band, and the frequency point of scanning eliminates interference frequency point: working as hair
When the absolute value of the difference of existing maximum energy value and the maximum energy value for interfering frequency point is more than or equal to preset threshold value, turn
It is rescaned to step 1, otherwise keeps interference.
2. a kind of communication countermeasure method extracted based on spectrum signature according to claim 1, it is characterised in that: counted newly
Maximum value is found out in group, the method being indexed in former array by the corresponding position of maximum value are as follows: it is corresponding to find out maximum value
First group in the corresponding frequency point Fm3 of minuend.
3. a kind of communication countermeasure method extracted based on spectrum signature according to claim 2, it is characterised in that: determine dry
The method for disturbing bandwidth interference frequency point corresponding with maximum energy value is determined is that new array removes maximum value, is searched secondary in new array
Big value, and index second largest value it is first group corresponding in the corresponding frequency point Fm4 of minuend, by the difference of frequency point Fm3 and frequency point Fm4
Absolute value as bandwidth, the mean value of frequency point Fm3 and frequency point Fm4 are as interference frequency point.
4. a kind of communication countermeasure method extracted based on spectrum signature according to claim 1, it is characterised in that: work as use
When energy feature, every KB energy is RMS average value, and energy number average every time is 10；When using amplitude characteristic, directly
Pick up frequency point of the two o'clock intermediate value as interference signal.
5. a kind of communication countermeasure method extracted based on spectrum signature according to claim 1, it is characterised in that: also optional
The moment frequency spectrum reaction for taking communication equipment both sides just to establish communication is set as spectrum signature to distinguish the transmitting-receiving of communicating pair
It is standby, convenient for the accurate interference of next step.
6. a kind of communication countermeasure method extracted based on spectrum signature according to claim 1, it is characterised in that: disturber
The optional mono-tone interference of formula and multitone jamming.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112911716A (en) * | 2021-02-05 | 2021-06-04 | 贵州久华信电子技术有限公司 | Data transmission method, device, equipment and storage medium |
| CN116735957A (en) * | 2023-06-07 | 2023-09-12 | 四川大学 | Near-frequency harmonic wave and inter-harmonic wave measuring method and system considering main lobe overlapping interference |
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| CN112911716A (en) * | 2021-02-05 | 2021-06-04 | 贵州久华信电子技术有限公司 | Data transmission method, device, equipment and storage medium |
| CN112911716B (en) * | 2021-02-05 | 2023-02-17 | 贵州久华信电子技术有限公司 | Data transmission method, device, equipment and storage medium |
| CN116735957A (en) * | 2023-06-07 | 2023-09-12 | 四川大学 | Near-frequency harmonic wave and inter-harmonic wave measuring method and system considering main lobe overlapping interference |
| CN116735957B (en) * | 2023-06-07 | 2024-02-27 | 四川大学 | Near-frequency harmonic wave and inter-harmonic wave measuring method and system considering main lobe overlapping interference |
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