CN107070828A - A kind of multi-functional communications Waveform generation method - Google Patents
A kind of multi-functional communications Waveform generation method Download PDFInfo
- Publication number
- CN107070828A CN107070828A CN201710305679.9A CN201710305679A CN107070828A CN 107070828 A CN107070828 A CN 107070828A CN 201710305679 A CN201710305679 A CN 201710305679A CN 107070828 A CN107070828 A CN 107070828A
- Authority
- CN
- China
- Prior art keywords
- waveform
- noise
- functional communications
- frequency
- broadband
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/12—Modulator circuits; Transmitter circuits
- H04L27/122—Modulator circuits; Transmitter circuits using digital generation of carrier signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
Abstract
The present invention discloses a kind of multi-functional communications Waveform generation method, comprises the following steps：Initial frequency is randomly choosed in the operating frequency range of multi-functional communications waveform, narrowband linear modulation waveform is generated；Generate white Gaussian noise；The white Gaussian noise of generation handles generation colored Gaussian noise through broadband band-pass filter；The frequency of sine wave is modulated using colored Gaussian noise, broadband noise fm waveform is generated；The narrowband linear fm waveform generated in step S1 and the broadband noise fm waveform generated in step S4 are synthesized in time domain, multi-functional communications waveform is generated.Communication waveforms part in the present invention uses narrowband linear fm waveform waveform, and the center frequency point of narrow band communication modulated signal is generated at random, with multi-functional characteristic；By the way that communication waveforms are hidden in noise waveform, the hiding performance of communication waveforms is improved, it is ensured that more safe and reliable during signal communication.
Description
Technical field
The invention belongs to waveform generation technique field, it is related to a kind of multi-functional communications Waveform generation method.
Background technology
In practical communication, the security and multi-mode feature of communication be communication parties it is desired to ensure that, how based on existing
Technical system and framework under ensure communication safe and reliable and a variety of function realize, be a problem of the communications field.Communication
In commonly use method have Frequency-hopping Communication Technology and private communication technology.Frequency-hopping Communication Technology is widely used in multi-functional communications,
Due to requiring that signal to noise ratio is big in receiving terminal, therefore the frequency spectrum of Frequency Hopping Signal can be significantly seen on frequency spectrograph, multi-functional
There is problem in communication.Private communication technology is applied under transmission High Security Level information scene, with complicated equipment and algorithm, into
This height, now designs a kind of multi-functional communications waveform generation technique, and the waveform of generation has low intercepting and capturing relative to Frequency-hopping Communication Technology
Probability, has the characteristics of easily realizing relative to private communication technology, is a valuable application technology.
The content of the invention
It is an object of the invention to provide a kind of multi-functional communications Waveform generation method, the hidden of conventional communication mode is solved
Hide characteristic poor, the problem of causing easily to be scouted.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of multi-functional communications Waveform generation method, comprises the following steps：
S1, randomly choose initial frequency in the operating frequency range of multi-functional communications waveform, generate narrowband linear modulation
Waveform；
S2, generation white Gaussian noise；
S3, the white Gaussian noise produced handle generation colored Gaussian noise through broadband band-pass filter；
S4, using colored Gaussian noise the frequency of sine wave is modulated, generates broadband noise fm waveform；
S5, the narrowband linear fm waveform generated in step S1 and the broadband noise fm waveform generated in step S4 existed
Synthesized in time domain, generate multi-functional communications waveform.
Further, narrowband linear modulation waveform mathematical modeling is in the step S1
Wherein AtFor the amplitude of communication modulation waveform,f0~U [f1 f2] represent f0Obey [f1 f2] between
Be uniformly distributed,For chirp rate.
Further, the formula of white Gaussian noise generation is in the step S2
Wherein, mean isIt is equal
It is worth, var isVariance,Sum (X) is represented to setThe summation of all elements,To obey equally distributed random change between [0,1]
Amount.
Further, the step S3 middle width strips bandpass filter is Butterworth filter, and its exponent number is 99, cutoff frequency
Rate coefficient is (f2-f1)/Fs, wherein, Fs is sample frequency.
Further, generated in the step S4 formula that is used of broadband noise fm waveform for：
Wherein AjFor the amplitude of noise FM waveform, fjRepresent
The initial frequency of noise FM waveform,For chirp rate, Gauss_color (n) is that broadband colored Gaussian is made an uproar
Sound sequence,
Further, the mathematical modeling that multi-functional communications waveform is generated in the step S5 is S (n)=Sth(n)+Sjk
(n), wherein,Sth(n) it is narrowband linear modulation waveform, Sjk(n) it is broadband noise frequency-modulated wave
Shape.
Beneficial effects of the present invention：
Communication waveforms part in the present invention uses narrowband linear fm waveform waveform, and in narrow band communication modulated signal
Heart frequency is generated at random, with multi-functional characteristic；By the way that communication waveforms are hidden in noise waveform, communication waveforms are improved
Hiding performance, it is ensured that it is more safe and reliable during signal communication.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, used required for being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
The flow chart of Fig. 1 multi-functional communications waveform generation；
Fig. 2 communication modulations signal waveform and spectrogram；
Fig. 3 multi-functional communications signal waveform and spectrogram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refer to shown in Fig. 1, the present invention is a kind of multi-functional communications Waveform generation method, as shown in figure 1, including following step
Suddenly：
S1, generation narrowband linear fm waveform：In multi-functional communications waveform working frequency range [f1f2] in randomly generate communication adjust
The centre frequency f of waveform processed0, and set bandwidth of operation Bt, pulse width T and sample frequency Fs, according to center frequency point f0, bandwidth Bt
With sample frequency Fs, generate narrowband linear fm waveform；
Wherein, BtWith [f1 f2] relation be
Bt/[f1 f2] ＜ 0.1 (1)
Narrowband linear modulation waveform Sth(n) mathematical modeling is
In formula (2), AtFor the amplitude of communication modulation waveform,f0~U [f1f2] represent f0Clothes
From [f1f2] between be uniformly distributed,For chirp rate；
S2, the method for generating white Gaussian noise：
N is produced from Gaussian noisezIt is individual to obey equally distributed stochastic variable between [01]Order
Assuming that setAverage be mean, variance is var, then can produce height according to formula (4)
This white noise Gauss：
In formula (4),Sum (X) is represented to setAll members
Element is summed；
S3, generation colored Gaussian noise：It is coloured that the white Gaussian noise Gauss of generation handles generation through Butterworth filter
Gaussian noise Gauss_color, wherein, Butterworth filter is broadband band-pass filter, and its exponent number is 99, cut-off frequency system
Number is (f2-f1)/Fs, Fs is sample frequency；
S4, generation broadband noise fm waveform：Using colored Gaussian noise Gauss_color (n),Frequency to sine wave is modulated, generation broadband noise fm waveform Sjk(n),
Wherein,
In formula (5), AjFor the amplitude of noise FM waveform, fjThe initial frequency of noise FM waveform is represented,For chirp rate,
S5, generation multi-functional communications waveform：Narrowband linear fm waveform and broadband noise fm waveform are generated in time domain
Synthesized, you can generation multi-functional communications waveform S (n), its mathematical modeling is as follows：
S (n)=Sth(n)+Sjk(n) (6)
In formula (6)
Below using the duration as 25 μ s, narrow band communication modulation waveform centre frequency f0For 4.3MHz, bandwidth BtFor 5MHz,
Broadband noise fm waveform working frequency range is 5-20MHz, sample frequency FsExemplified by 41.7MHz multi-functional communications waveform, point
Analyse its communication performance and concealment performance.
As shown in Figures 2 and 3, multi-functional communications signal waveform is compared with the communication modulation signal waveform at a certain moment, many work(
The narrow band communication modulation waveform frequency spectrum of energy communication waveforms is hidden in noise FM waveform frequency spectrum, can effectively lift multi-functional communications
The covert communications ability of waveform.
Communication waveforms part in the present invention uses narrowband linear fm waveform waveform, and in narrow band communication modulated signal
Heart frequency is generated at random, with multi-functional characteristic；By the way that communication waveforms are hidden in noise waveform, communication waveforms are improved
Hiding performance, it is ensured that it is more safe and reliable during signal communication.
Above content is only the design example and explanation to the present invention, affiliated those skilled in the art
Various modifications or supplement are made to described specific embodiment or is substituted using similar mode, without departing from invention
Design or surmount scope defined in the claims, protection scope of the present invention all should be belonged to.
Claims (6)
1. a kind of multi-functional communications Waveform generation method, it is characterised in that comprise the following steps：
S1, randomly choose initial frequency in the operating frequency range of multi-functional communications waveform, generate narrowband linear modulation waveform；
S2, generation white Gaussian noise；
S3, the white Gaussian noise produced handle generation colored Gaussian noise through broadband band-pass filter；
S4, using colored Gaussian noise the frequency of sine wave is modulated, generates broadband noise fm waveform；
S5, by the narrowband linear fm waveform generated in step S1 and the broadband noise fm waveform generated in step S4 in time domain
It is upper to be synthesized, generate multi-functional communications waveform.
2. multi-functional communications Waveform generation method according to claim 1, it is characterised in that：Arrowband in the step S1
Linear modulation waveform mathematical modeling isWherein, AtFor the amplitude of communication modulation waveform,f0~U [f1 f2] represent f0Obey [f1 f2] between be uniformly distributed,It is oblique for frequency modulation
Rate.
3. a kind of multi-functional communications Waveform generation method according to claim 1, it is characterised in that：It is high in the step S2
This white noise generation formula beWherein, mean isAverage, var isVariance,sum
(X) represent to setThe summation of all elements,It is uniform between [0,1] to obey
The stochastic variable of distribution.
4. multi-functional communications Waveform generation method according to claim 1, it is characterised in that：The step S3 middle width strips
Bandpass filter is Butterworth filter, and its exponent number is 99, and cut-off frequency coefficient is (f2-f1)/Fs, wherein, Fs is sampling frequency
Rate.
5. a kind of multi-functional communications Waveform generation method according to claim 1, it is characterised in that：It is raw in the step S4
The formula used into broadband noise fm waveform for：Its
Middle AjFor the amplitude of noise FM waveform, fjThe initial frequency of noise FM waveform is represented,It is oblique for frequency modulation
Rate, Gauss_color (n) is broadband colored Gaussian noise sequence,
6. a kind of multi-functional communications Waveform generation method according to claim 1, it is characterised in that：It is raw in the step S5
Mathematical modeling into multi-functional communications waveform is S (n)=Sth(n)+Sjk(n), wherein,Sth
(n) it is narrowband linear modulation waveform, Sjk(n) it is broadband noise fm waveform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710305679.9A CN107070828A (en) | 2017-05-03 | 2017-05-03 | A kind of multi-functional communications Waveform generation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710305679.9A CN107070828A (en) | 2017-05-03 | 2017-05-03 | A kind of multi-functional communications Waveform generation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107070828A true CN107070828A (en) | 2017-08-18 |
Family
ID=59597532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710305679.9A Withdrawn CN107070828A (en) | 2017-05-03 | 2017-05-03 | A kind of multi-functional communications Waveform generation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107070828A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474717A (en) * | 2019-08-26 | 2019-11-19 | 江西省计量测试研究院 | A kind of safety of physical layer technology for ubiquitous electric power Internet of Things Network Communication |
| CN115801522A (en) * | 2023-02-01 | 2023-03-14 | 广东大湾区空天信息研究院 | Method, system and related equipment for generating two paths of coherent chirp signals |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040086001A1 (en) * | 2002-10-30 | 2004-05-06 | Miao George J. | Digital shaped gaussian monocycle pulses in ultra wideband communications |
| CN101917243A (en) * | 2010-08-13 | 2010-12-15 | 河南理工大学 | Noise ultra-wideband digital secret communication system |
| CN105959245A (en) * | 2016-04-20 | 2016-09-21 | 刘方正 | Broadband agile hopping hidden communication waveform generation method |
-
2017
- 2017-05-03 CN CN201710305679.9A patent/CN107070828A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040086001A1 (en) * | 2002-10-30 | 2004-05-06 | Miao George J. | Digital shaped gaussian monocycle pulses in ultra wideband communications |
| CN101917243A (en) * | 2010-08-13 | 2010-12-15 | 河南理工大学 | Noise ultra-wideband digital secret communication system |
| CN105959245A (en) * | 2016-04-20 | 2016-09-21 | 刘方正 | Broadband agile hopping hidden communication waveform generation method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474717A (en) * | 2019-08-26 | 2019-11-19 | 江西省计量测试研究院 | A kind of safety of physical layer technology for ubiquitous electric power Internet of Things Network Communication |
| CN115801522A (en) * | 2023-02-01 | 2023-03-14 | 广东大湾区空天信息研究院 | Method, system and related equipment for generating two paths of coherent chirp signals |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103427930B (en) | Blocking type interference signal generation device and method based on digital noise | |
| CN106209701B (en) | MFSK signal code rate-estimation method and device under Alpha Stable distritation noise circumstance | |
| CN107070828A (en) | A kind of multi-functional communications Waveform generation method | |
| CN112748403B (en) | Nonlinear frequency modulation pulse train waveform design method based on frequency spectrum modulation agility | |
| CN106908769A (en) | A kind of multifunction radar detects Waveform generation method | |
| CN103308891A (en) | Group delay modulation based ultra-low side lobe chaotic radar signal generation and achievement method | |
| Ravenscroft et al. | A power-efficient formulation of tandem-hopped radar & communications | |
| CN114978832A (en) | Radar communication integrated modulation signal generation method with channel adaptability | |
| CN105959245A (en) | Broadband agile hopping hidden communication waveform generation method | |
| Blunt et al. | CPM-based radar waveforms for efficiently bandlimiting a transmitted spectrum | |
| CN105516036A (en) | CPFSK modulation identification method | |
| CN101437148B (en) | Video information leakage resistance method and processing device | |
| CN107809268A (en) | A kind of ultra-broadband signal Wave shape extracting method based on accidental resonance | |
| Hague | Transmit waveform design using multi-tone sinusoidal frequency modulation | |
| CN108449158A (en) | Multi-subband random gate press type interferes source generating device and production method | |
| CN106452501B (en) | The building of the real empty quadriphase sequence that interlocks and MSK/GMSK synchronous method and spread spectrum system | |
| RU2528085C1 (en) | Method for intrapulse modulation-demodulation with direct spectrum spreading | |
| Gevargiz et al. | A comparison of weighted and non-weighted transform domain processing systems for narrowband interference excision | |
| CN108377158A (en) | It is a kind of realizing spread-spectrum signal multiband segmentation and polymerization | |
| Zhang | Spectrum aanlyses of unb modulation formats | |
| CN108427032A (en) | Inversion method when a kind of spectral decomposition method and frequency | |
| Meng et al. | An intelligent anti-jamming frequency hopping system | |
| CN115664546A (en) | Dynamic complex battlefield electromagnetic environment construction method | |
| Cook | CPM-based radar waveforms for efficiently bandlimiting a transmitted spectrum | |
| CN105022053B (en) | Parametric sonar emits the real-time Kalman filter recursion modulator approach of signal |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170818 |