CN107465463A - A kind of means for anti-jamming and method - Google Patents
A kind of means for anti-jamming and method Download PDFInfo
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- CN107465463A CN107465463A CN201710843282.5A CN201710843282A CN107465463A CN 107465463 A CN107465463 A CN 107465463A CN 201710843282 A CN201710843282 A CN 201710843282A CN 107465463 A CN107465463 A CN 107465463A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 8
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 8
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000002452 interceptive effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
Abstract
The invention provides a kind of means for anti-jamming and method, including radio frequency reception channel, frequency synthesis and radio frequency transmitting channel, the radio frequency reception channel includes detector module, amplifier module, filter module and low-converter module, and detector module, amplifier module, filter module and low-converter module are sequentially connected；The radio frequency transmitting channel includes detector module, amplifier module and upconverter module, and detector module, amplifier module and upconverter module are sequentially connected；The frequency synthesis is DDS circuit module.The present invention improves the anti-interference of communication system, the carrier frequency of receiving-transmitting sides transmission signal is set to carry out Discrete Change according to agreement rule, i.e. communicate in Up/Down Conversion carrier wave by DDS circuit module control and random jump, a variety of accidental channels are produced by frequency displacement control signal, so as to reach anti-interference purpose, meet the requirement of receiving module performance well, for communication equipment, greatly improve the Performance And Reliability of equipment.
Description
Technical field
The present invention relates to a kind of means for anti-jamming and method, belongs to telecommunication technology field.
Background technology
Confront with each other and be particularly important in modern war, between electronic warfare, once being disturbed successfully by other side, then lose at once
Initiative is gone, a side of initiative is lost in electronic warfare, because of communication disruption, the possibility commanded failure and failed is very big.
To tackle the risk in this kind of military communication, using the detectings such as bounce frequency filter module DDS circuit module interference and
Channel is distributed in real time, therefore higher requirement is proposed to the antijamming capability of Wireless Telecom Equipment, it is desirable to receives mould
Block image frequency and interference signal rejection ability are strong, and input dynamic range and machine sensitivity are high, thus we determine use with
Fast channel allocation Technology design theory based on frequency hopping, quick distribution conversion channel, makes interference signal can not interfere with just
Chang Xindao.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of means for anti-jamming and method, the means for anti-jamming and side
Method uses the circuit such as control circuit and DDS chips, and the local oscillation signal for producing 155-305MHz is carried out up and down to radio-frequency receiving-transmitting signal
Frequency conversion, radio-frequency receiving-transmitting channel interfering signal is isolated in outside if filter block after mixing, so as to avoid various frequencies
Electromagnetic interference between rate, receiving sensitivity is improved, noise-reduction coefficient, improves input dynamic range, image frequency and clutter suppression
Ability processed, so as to strengthen Electro Magnetic Compatibility, signal is avoided to interfere.
The present invention is achieved by the following technical programs.
A kind of means for anti-jamming provided by the invention, including radio frequency reception channel, frequency synthesis and radio frequency transmitting channel, institute
Stating radio frequency reception channel includes detector module, amplifier module, filter module and low-converter module, detector module,
Amplifier module, filter module and low-converter module are sequentially connected；The radio frequency transmitting channel includes detector module, put
Big device module, upconverter module and filter module, detector module, amplifier module, upconverter module and wave filter
Module is sequentially connected；The frequency synthesis is DDS circuit module；Low-converter module and radio frequency in the radio frequency reception channel
Upconverter module in transmission channel is connected with DDS circuit module respectively.
Detector module in institute radio frequency reception channel and radio frequency transmitting channel is power detector module.
Amplifier module in the radio frequency reception channel is low noise amplifier module, and filter module filters for frequency hopping
Device module.
Amplifier module in the radio frequency transmitting channel is driving amplifier module, and filter module is intermediate-frequency filter
Module.
Based on a kind of anti-interference method, comprise the following steps：
1. reception signal：The faint radio of power detector module reception antenna reception space in radio frequency reception channel
Signal simultaneously detects；
2. signal amplifies：Low noise amplifier module in radio frequency reception channel is put the radio signal received
Greatly；
3. select channel frequency：Radio signal after amplification is subjected to bounce frequency filter module detecting, selected corresponding
Channel frequency；
4. letter obtains fast frequency-hopped channel：By DDS circuit module output signal as local oscillator, mixed with channel frequency
Frequently, fast frequency-hopped channel is obtained；
5. obtain the signal of fast frequency-hopped channel：Fast frequency-hopped channel is subjected to down coversion in upconverter module, obtained
The signal of fast frequency-hopped channel is taken, and is sent to DDS circuit module；
6. obtain quick change frequency hopping channel：By the signal of transmission signal and fast frequency-hopped channel in if filter block
In be mixed, obtain quick change frequency hopping channel；
7. obtain the signal of quick change frequency hopping channel：Quick change frequency hopping channel is carried out in upconverter module
Frequency conversion, obtain the signal of quick change frequency hopping channel；
8. power amplification：The signal of quick change frequency hopping channel carries out power amplification through driving amplifier module；
9. radio-frequency transmissions：By the signal of the quick change frequency hopping channel after power amplification, detected through power detector module
Radio-frequency transmissions afterwards.
4. middle DDS circuit module uses parallel port control to the step, and Hopping time is less than 5us, and output signal is 155~
305MHz, obtain 50us fast frequency-hopped channel.
The rf inputs of the radio frequency reception channel and the RF output end of radio frequency transmitting channel insert coupling detection
Carry out power detection.
The step 1. in the wireless signal that receives be less than -94dBm, 2. middle wireless signal amplifies 57~61dB to step,
The frequency of step 6. middle transmission signal is 8MHz.
The beneficial effects of the present invention are：The anti-interference of communication system is improved, makes the load of receiving-transmitting sides transmission signal
Wave frequency rate according to agreement rule carry out Discrete Change, that is, communicate in Up/Down Conversion carrier wave by DDS circuit module control and with
Machine saltus step, a variety of accidental channels are produced by frequency displacement control signal, so as to reach anti-interference purpose, meet receiving module well
The requirement of performance, for communication equipment, greatly improve the Performance And Reliability of equipment.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the control principle drawing of channel of the present invention.
Embodiment
Be described further below technical scheme, but claimed scope be not limited to it is described.
As shown in figure 1, a kind of means for anti-jamming, including radio frequency reception channel, frequency synthesis and radio frequency transmitting channel, realize
Interference detecting and fast channel allocation function, the radio frequency reception channel include detector module, amplifier module, wave filter mould
Block and low-converter module, detector module, amplifier module, filter module and low-converter module are sequentially connected；It is described
Radio frequency transmitting channel includes detector module, amplifier module, upconverter module and filter module, detector module, puts
Big device module, upconverter module and filter module are sequentially connected；The frequency synthesis is DDS circuit module；The radio frequency
The upconverter module in low-converter module and radio frequency transmitting channel in receiving channel is connected with DDS circuit module respectively.
Detector module in institute radio frequency reception channel and radio frequency transmitting channel is power detector module.
Amplifier module in the radio frequency reception channel is low noise amplifier module, and filter module filters for frequency hopping
Device module.
Amplifier module in the radio frequency transmitting channel is driving amplifier module, and filter module is intermediate-frequency filter
Module.
Based on a kind of anti-interference method, comprise the following steps：
1. reception signal：The faint radio of power detector module reception antenna reception space in radio frequency reception channel
Signal simultaneously detects；
2. signal amplifies：Low noise amplifier module in radio frequency reception channel is put the radio signal received
Greatly；
3. select channel frequency：Radio signal after amplification is subjected to bounce frequency filter module detecting, selected corresponding
Channel frequency, this step detect interference signal；
4. letter obtains fast frequency-hopped channel：Consider a variety of interfering frequencies, by DDS circuit module output signal as local oscillator,
It is mixed with channel frequency, radio frequency reception channel interfering signal is isolated in outside upconverter module after mixing, avoided
Electromagnetic interference between various frequencies, obtains fast frequency-hopped channel, due to frequency caused by interference signal and DDS circuit module not
Correlation, and DDS circuit module quickly constantly changes channel, so interference signal can not pass through bounce frequency filter module and DDS
Circuit module, finally obtain clean reception and transmission signal；
5. obtain the signal of fast frequency-hopped channel：Fast frequency-hopped channel is subjected to down coversion in upconverter module, obtained
The signal of fast frequency-hopped channel is taken, and is sent to DDS circuit module；
6. obtain quick change frequency hopping channel：By the signal of transmission signal and fast frequency-hopped channel in if filter block
In be mixed, radio frequency transmitting channel interfering signal is isolated in outside upconverter module after mixing, avoids various frequencies
Electromagnetic interference between rate, obtain quick change frequency hopping channel；
7. obtain the signal of quick change frequency hopping channel：Quick change frequency hopping channel is carried out in upconverter module
Frequency conversion, obtain the signal of quick change frequency hopping channel；
8. power amplification：The signal of quick change frequency hopping channel carries out power amplification through driving amplifier module；
9. radio-frequency transmissions：By the signal of the quick change frequency hopping channel after power amplification, detected through power detector module
Radio-frequency transmissions afterwards.
4. middle DDS circuit module uses parallel port control to the step, and Hopping time is less than 5us, and output signal is 155~
305MHz, obtain 50us fast frequency-hopped channel.
The rf inputs of the radio frequency reception channel and the RF output end of radio frequency transmitting channel insert coupling detection
Carry out power detection.
The step 1. in the wireless signal that receives be less than -94dBm, 2. middle wireless signal amplifies 57~61dB to step,
The frequency of step 6. middle transmission signal is 8MHz.
As shown in Fig. 2 channel control also needs to mutually make an uproar sine wave signal as reference source, this hair using 1GHz or so height
The bright ADF4350PLL chips generation frequency change reference source using ADI companies.ADF4350 can generate 137MHz-4.4GHz
The sine wave of frequency range, 1GHz's mutually makes an uproar as 93dBc@1kHz, 100dBc@>10kHz.
In summary, invention enhances receiving sensitivity, reduce noise coefficient, also improve input dynamic range,
Image frequency, clutter suppression capability and Electro Magnetic Compatibility, avoid signal from interfering.
Claims (8)
- A kind of 1. means for anti-jamming, it is characterised in that：It is described including radio frequency reception channel, frequency synthesis and radio frequency transmitting channel Radio frequency reception channel includes detector module, amplifier module, filter module and low-converter module, detector module, puts Big device module, filter module and low-converter module are sequentially connected；The radio frequency transmitting channel includes detector module, amplification Device module, upconverter module and filter module, detector module, amplifier module, upconverter module and wave filter mould Block is sequentially connected；The frequency synthesis is DDS circuit module；Low-converter module and radio frequency hair in the radio frequency reception channel The upconverter module penetrated in passage is connected with DDS circuit module respectively.
- 2. means for anti-jamming as claimed in claim 1, it is characterised in that：In institute radio frequency reception channel and radio frequency transmitting channel Detector module is power detector module.
- 3. means for anti-jamming as claimed in claim 1, it is characterised in that：Amplifier module in the radio frequency reception channel is Low noise amplifier module, filter module are bounce frequency filter module.
- 4. means for anti-jamming as claimed in claim 1, it is characterised in that：Amplifier module in the radio frequency transmitting channel is Driving amplifier module, filter module are if filter block.
- A kind of 5. anti-interference method, it is characterised in that：Comprise the following steps：1. reception signal：The faint radio signal of power detector module reception antenna reception space in radio frequency reception channel And detect；2. signal amplifies：The radio signal received is amplified by the low noise amplifier module in radio frequency reception channel；3. select channel frequency：Radio signal after amplification is subjected to bounce frequency filter module detecting, selects corresponding channel Frequency；4. letter obtains fast frequency-hopped channel：By DDS circuit module output signal as local oscillator, it is mixed, is obtained with channel frequency Take fast frequency-hopped channel；5. obtain the signal of fast frequency-hopped channel：Fast frequency-hopped channel is subjected to down coversion in low-converter module, obtained fast The signal of fast frequency hopping channel, and it is sent to DDS circuit module；6. obtain quick change frequency hopping channel：Transmission signal and the signal of fast frequency-hopped channel are entered in if filter block Row mixing, obtain quick change frequency hopping channel；7. obtain the signal of quick change frequency hopping channel：Quick change frequency hopping channel is carried out becoming in upconverter module Frequently, the signal of quick change frequency hopping channel is obtained；8. power amplification：The signal of quick change frequency hopping channel carries out power amplification through driving amplifier module；9. radio-frequency transmissions：By the signal of the quick change frequency hopping channel after power amplification, penetrated after power detector module detects Take place frequently and penetrate.
- 6. anti-interference method as claimed in claim 5, it is characterised in that：4. middle DDS circuit module uses parallel port to the step Control, Hopping time are less than 5us, and output signal is 155~305MHz, obtains 50us fast frequency-hopped channel.
- 7. anti-interference method as claimed in claim 5, it is characterised in that：The rf inputs of the radio frequency reception channel and penetrate The RF output end of frequency transmission channel inserts coupling detection and carries out power detection.
- 8. anti-interference method as claimed in claim 5, it is characterised in that：The step 1. in the wireless signal that receives it is small In -94dBm, 2. middle wireless signal amplifies 57~61dB to step, and the frequency of step 6. middle transmission signal is 8MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710843282.5A CN107465463A (en) | 2017-09-18 | 2017-09-18 | A kind of means for anti-jamming and method |
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| CN201710843282.5A CN107465463A (en) | 2017-09-18 | 2017-09-18 | A kind of means for anti-jamming and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247729A (en) * | 2019-07-18 | 2019-09-17 | 中电科仪器仪表有限公司 | A kind of unmanned plane real-time tracking and quick counter integral control system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20171212 |
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