CN1949688B - Marker detector and detecting method - Google Patents
Marker detector and detecting method Download PDFInfo
- Publication number
- CN1949688B CN1949688B CN2006101507023A CN200610150702A CN1949688B CN 1949688 B CN1949688 B CN 1949688B CN 2006101507023 A CN2006101507023 A CN 2006101507023A CN 200610150702 A CN200610150702 A CN 200610150702A CN 1949688 B CN1949688 B CN 1949688B
- Authority
- CN
- China
- Prior art keywords
- signal
- frequency
- modulation
- electric signal
- amplitude
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The invention relates to an identification signal detecting device and method, where the detecting device comprises: photoelectric converter for converting optical signal modulation wave into electricsignal modulation wave; signal divider connected with the photoelectric converter to divide the electric signal modulation wave according to the wavelength or frequency of the identification signal loaded on the electric signal modulation wave; plural spectrum analyzers with different frequency band ranges, separately connected with the signal divider to make spectrum analysis on the divided electric signal modulation waves. Thus, it reduces spectrum analysis calculation quantity, shortens spectrum analysis calculation time by times, improves analysis result accuracy and therefore raises operating efficiency of the identification signal detecting system.
Description
Technical field
The present invention relates to the signal detection technique in the optical communication system, especially a kind of id signal checkout gear and detection method.
Background technology
In DWDM (Dense Wavelength Division Multiplexing, dense wave division multipurpose) optical transmission system, can be in an optical fiber multiplexing a lot of channels, the carrier wave by different wavelength in each channel comes transmission information.For receiving terminal can be discerned the carrier wavelength of each modulating wave and the power of service signal easily, can selected frequency far below service signal frequency (for example: at hundreds of KHz between the 1MHz) and the mutually different simple signal of frequency or its combination as id signal, be loaded on the modulating wave by shallow amplitude modulation(PAM) mode, this modulating wave of unique identification, and set up corresponding relation between the power of the amplitude of each carrier wavelength and each sign wavelength and sign wavelength and service signal.At each receiving node, by to the id signal wavelength on the modulating wave and the detection of amplitude, in conjunction with the carrier wavelength of setting up in advance and each sign wavelength and identify the amplitude of wavelength and the power of service signal between corresponding relation, the wavelength that just can know each carrier wave with and the size of the power of the service signal that carries.Figure 1 shows that the id signal detection system, it comprises photoelectric conversion device and arrangements for analyzing frequency, wherein, arrangements for analyzing frequency is made of the band pass filter, analog-to-digital conversion module and the signal processing module that connect successively, and the input of band pass filter is connected with the output of photoelectric conversion device.At transmitting terminal, loaded respectively n id signal (frequency be respectively f1, f2 ..., fn) modulating wave λ 1 (f1), λ 2 (f2) ..., λ n (fn) (wavelength be respectively λ 1, λ 2 ..., λ n) after (MUX) close ripple through multiplexing equipment, be transferred to optical splitter by transmission channel, optical splitter goes out fraction with the separate optical signals one that receives and sends to the id signal detection system, so that id signal is detected, all the other light signals are done normal communication service and are used.After the light signal that is used to detect enters the id signal detection system, band pass filter in photoelectric conversion device and the arrangements for analyzing frequency carries out sending to analog-to-digital conversion module behind opto-electronic conversion and the bandpass filtering to light signal respectively, analog-to-digital conversion module is a digital signal with analog signal conversion, and m the discrete point of therefrom sampling sends to signal processing module, signal processing module carries out spectrum analysis to this m sampled point, determined to adopt in the transmission channel size of which id signal and each id signal amplitude, thereby according to the carrier wavelength of setting up in advance and each sign wavelength and identify the amplitude of wavelength and the power of service signal between corresponding relation, determine the wavelength of each carrier wave of using in the light signal and the power of the service signal that it carries thereof.
In the prior art, normally discrete Fourier transform (DFT) (DFT) realizes by sampled signal is carried out in spectrum analysis.In the practical communication process, not only need to identify a carrier wave in the optical fiber, but will identify carrier waves all in the whole communication system, therefore, the quantity of the id signal that needs is also very huge; Simultaneously, thereby in order accurately to know the correct power that calculates service signal of amplitude of id signal by the analysis result of DFT, just need carry out analytical calculation to abundant discrete point in frequency, promptly adopt sufficiently high frequency resolution, like this, carrying out computational length that DFT calculates will inevitably can be very big.For example: for the frequency interval that has adopted 1600 id signals, adjacent id signal is 20Hz, frequency resolution are the 1Hz communication system, and then during spectrum analysis, the computational length of the DFT that needs is 64K.The data of m discrete point are carried out 2 to be the DFT of base, and needed amount of calculation is m
2Inferior, if use the fast algorithm fast Fourier transform (FFT) of DFT, its amount of calculation is log2
m/ 2, compare with DFT, can greatly reduce amount of calculation, thereby improve arithmetic speed.Even so, the amount of calculation of Xu Yaoing is still very big.So far, how rapid analysis goes out the frequency spectrum and the amplitude thereof of id signal, is a key issue during present id signal detects.
In order to improve the spectrum analysis speed of id signal, in the prior art, two kinds of methods have been taked, first method just wishes to know the information of frequency spectrum on the id signal Frequency point based on analysis purpose, select the special sample rate and the frequency interval of id signal, make in FFT calculates, only calculate the frequency spectrum on the id signal Frequency point, and do not calculate frequency spectrum on other Frequency point, thereby reduce operand.For example: to have adopted the frequency interval of 1600 id signals, adjacent id signal be that 20Hz, frequency resolution are the 1Hz communication system for aforementioned, only calculates the frequency spectrum of 1600 Frequency points, rather than calculate the frequency spectrum on all 64K Frequency point.Though this method has improved the spectrum analysis speed of id signal to a certain extent, but, exist following defective: in case the frequency of id signal is offset, just need accurately estimate the spectrum amplitude of a certain Frequency point by means of the spectrum amplitude on adjacent a plurality of Frequency points, yet,, just can't accurately calculate the spectrum amplitude of id signal Frequency point owing to the spectrum information that has abandoned on the side frequency point, thereby, also just can't accurately analyze the power of service signal; If the frequency shift (FS) of id signal is bigger, the Frequency point of actual id signal may be displaced on the side frequency point that does not have to calculate, because this method is not calculated the amplitude of those Frequency points, therefore, can't detect id signal, also just can't analyze the power of service signal; In addition, because when adopting FFT to carry out spectrum analysis, signal processing module need be stored in the results of intermediate calculations of more complicated in the external memory, when needing, from external memory, extract results of intermediate calculations again, this has just influenced the speed of spectrum analysis, and has prolonged the time that id signal detects, and has reduced detection efficiency.
The second method of taking in the prior art, based on the amount of calculation of FFT be directly proportional with the spectral resolution of requirement and each id signal through after communication system transmits, differ bigger thought between its signal-to-noise performance is mutual, id signal to different signal to noise ratios, adopt different spectral resolutions to analyze, id signal at high s/n ratio, adopt thicker spectral resolution to analyze, and, adopt meticulousr frequency resolution to analyze for the lower id signal of signal to noise ratio.For example: to have adopted the frequency interval of 1600 id signals, adjacent id signal be in the communication system of 20Hz for aforementioned, if requiring frequency resolution is 2Hz, the FFT computational length that then needs will be 32K, and the amount of calculation when requiring frequency resolution to be 1Hz is reduced half.Specific practice is: to the digital signal that analog-to-digital conversion module obtains, at first carry out the fft analysis of thick spectral resolution, can detect the higher id signal of some noise like this, amount of calculation is also little; Can't detected id signal during for fft analysis under thick spectral frequencies resolution, continuation is to the fft analysis under thick spectral frequencies resolution of several frame data subsequently, then will be subsequently the fft analysis result of several frame data carry out after the phase shift fft analysis results added with first frame data, obtain high-resolution fft analysis result.This method adopts variable-resolution that the frequency spectrum of id signal is carried out fft analysis, saved unnecessary computational process, and the system identification signal signal to noise ratio is high more, and required amount of calculation is more little.But, still there is following defective in this method: when adopting fft analysis that mode to the fft analysis result summation of multiframe data obtains high frequency resolution as a result, need know the phase difference between the multiframe data, this just need calculate the frequency of time difference between the multiframe data and id signal to be analyzed and obtain phase difference, under the situation of id signal generation frequency displacement, because the actual frequency of id signal is different and unknowable with the deviation of nominal frequency, also just can't know the phase difference between the multiframe signal, thereby also just can't obtain the fft analysis result of the lower id signal of signal to noise ratio, therefore, also just can't accurately analyze, even can't analyze the power of service signal; In addition, identical with first method, exist equally because the spectrum analysis speed that the visit external memory causes is slow, the id signal long and low defective of detection efficiency detection time.
Summary of the invention
Technical problem to be solved by this invention is: overcome in the prior art the big defective of amount of calculation that exists when the sign signal detection system detects id signal, and in the prior art for reducing spectrum amplitude that can't accurately calculate the id signal Frequency point that exists in two kinds of methods that amount of calculation takes or the defective that can't detect id signal.
For solving the problems of the technologies described above, a kind of id signal detection system provided by the invention comprises: photoelectric conversion device is used for optical signal modulation wave is converted to electric signal modulation;
The signal branch apparatus is connected with described photoelectric conversion device, is used for according to the wavelength or the frequency of the id signal that loads on the described electric signal modulation described electric signal modulation being carried out shunt;
The arrangements for analyzing frequency that a plurality of frequency band ranges are different is connected with described signal branch apparatus respectively, is used for the electric signal modulation after the shunt is carried out spectrum analysis.
In the said system, described arrangements for analyzing frequency comprises:
Band pass filter is connected with described signal branch apparatus, is used for the electric signal modulation after the shunt is carried out filtering;
Analog-to-digital conversion module is connected with described band pass filter, is used for the modulated-analog signal of filtered electric signal modulation is converted to digital modulation signals and sampling;
Signal processing module is connected with described analog-to-digital conversion module, and the id signal that loads on the digital modulation signals that is used for sampling is obtained carries out spectrum analysis.
Described band pass filter is Butterworth type band pass filter, Chebyshev's type band pass filter or Bei Saier type band pass filter.Be provided with Signal Conditioning Equipment between described photoelectric conversion device and the described signal branch apparatus, the amplitude that is used for is to the received signal regulated.
In addition, said system also comprises Signal Conditioning Equipment, is connected with described photoelectric conversion device and described signal branch apparatus respectively, is used for the amplitude of described electric signal modulation is regulated; Described signal branch apparatus is connected with described photoelectric conversion device by described Signal Conditioning Equipment.
For solving the problems of the technologies described above, a kind of id signal detection method provided by the invention comprises:
Step 1 is converted to electric signal modulation with optical signal modulation wave;
Step 3 is carried out spectrum analysis to the id signal that loads on each electric signal modulation after the shunt respectively.
In the said method, described step 2 is specially: according to the frequency band range of arrangements for analyzing frequency, according to the wavelength or the frequency of the id signal that loads on the described electric signal modulation, described electric signal modulation is carried out shunt.Accordingly, described step 3 is specially: described electric signal modulation is carried out filtering; The modulated-analog signal of filtered electric signal modulation is converted to digital modulation signals and sampling; The id signal that loads on the digital modulation signals that sampling is obtained carries out spectrum analysis.Wherein, described id signal is carried out spectrum analysis be specially: adopt the transform domain analysis method that described id signal is carried out spectrum analysis, described transform domain analysis method is specially fast fourier transform method.
After the described step 3, also carry out: after the described step 3, also carry out: by the frequency and the amplitude of the id signal that analyzes, according to the corresponding relation between the amplitude of the amplitude of the frequency of id signal of storage in advance and carrier wavelength and id signal and service signal, know the amplitude of the service signal that loads on the wavelength of carrier wave of described id signal and this carrier wave.
In addition, described step 1 is specially: optical signal modulation wave is converted to electric signal modulation; With the amplitude adjusted of described electric signal modulation is predefined standard amplitude.Accordingly, described step 3 is specially: adopt fast fourier transform method to analyze the frequency and the amplitude of described id signal, and, calculate original amplitude of described id signal according to the amplitude information of the amplitude adjusted percent information of the ratio of expression amplitude of described electric signal modulation and described standard amplitude and the described id signal that analyzes.
Based on technique scheme, the present invention has following beneficial technical effects:
1, id signal detection system provided by the invention comprises the arrangements for analyzing frequency that a plurality of frequency band ranges are different, can be according to the wavelength or the frequency of id signal, modulating wave is carried out shunt according to frequency band range, simultaneously the id signal in the different frequency bands scope is carried out spectrum analysis, compared with prior art, shortened the computing time of spectrum analysis at double;
2, when adopting id signal checkout gear provided by the invention, need not to reduce amount of calculation by the Frequency point that reduces id signal, therefore, with take two kinds of methods to compare for the spectrum analysis speed that improves id signal in the prior art, the precision of analysis height, thus can calculate the wavelength of carrier wave and the power of service signal accurately;
3, because id signal detection system provided by the invention can be divided into modulating wave several roads, simultaneously the id signal that loads on it is carried out spectrum analysis, compared with prior art, reduce the time of visit external memory at double, thereby improved the operating efficiency of id signal detection system.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of prior art id signal detection system.
Fig. 2 is the structural representation of id signal detection system embodiment one of the present invention.
Fig. 3 is the frequency relation schematic diagram of the id signal of the pass band width of band pass filter of the present invention and reception.
Fig. 4 is the structural representation of id signal detection system embodiment two of the present invention.
Fig. 5 is the basic flow sheet of id signal detection method of the present invention.
Fig. 6 is the flow chart of id signal detection method embodiment one of the present invention.
Embodiment
The present invention is a kind of id signal detection system and detection method that improves the detection efficiency of id signal, its core concept is: according to the frequency of the id signal that loads on the modulating wave, the modulating wave that utilizes signal shunt will load id signal is divided into several roads that belong to the different frequency bands scope, and the id signal on the modulating wave of the many groups after the shunt is carried out spectrum analysis simultaneously.
Figure 2 shows that the structural representation of id signal detection system embodiment one of the present invention, this id signal detection system comprises successively photoelectric conversion device 1, the signal branch apparatus 2 that connects, the arrangements for analyzing frequency that has nothing in common with each other with a plurality of frequency band ranges: first arrangements for analyzing frequency 31, second arrangements for analyzing frequency 32 ..., N arrangements for analyzing frequency 3N (N is the integer greater than 1).Wherein, send to signal branch apparatus 2 after photoelectric conversion device 1 light signal that is used for having loaded the modulating wave of id signal is converted to the signal of telecommunication; Signal branch apparatus 2 is used for after receiving electric signal modulation, wavelength or frequency according to the id signal that loads on this electric signal modulation are carried out shunt to electric signal modulation, modulating wave is sent to frequency band range respectively comprise the wavelength of this id signal or the arrangements for analyzing frequency of frequency; Each arrangements for analyzing frequency is used for the id signal that loads on the electric signal modulation after the shunt is carried out spectrum analysis.
Same as the prior art, first arrangements for analyzing frequency 31 is made of with signal processing module 313 band pass filter 311 that connects successively, analog-to-digital conversion module 312, second arrangements for analyzing frequency 32 is made of with signal processing module 323 band pass filter 321 that connects successively, analog-to-digital conversion module 322, ..., N arrangements for analyzing frequency 3N is made of band pass filter 3N1, the analog-to-digital conversion module 3N2 and the signal processing module 3N3 that connect successively respectively, and the band pass filter in each arrangements for analyzing frequency is connected with signal branch apparatus 2 respectively.Wherein, each band pass filter is used for electric signal modulation is carried out filtering, eliminate noise and the outer energy of band on the RX path, electric signal modulation after eliminating noise and being with outer energy is sent to the analog-to-digital conversion module of its connection, its pass band width is the frequency band range of the arrangements for analyzing frequency at place separately, the transition band bandwidth is being the best less than half of id signal frequency interval, the centre frequency of the id signal frequency range on the modulating wave of its centre frequency difference correspondence and its reception, each band pass filter can be respectively Butterworth type band pass filter, Chebyshev's type band pass filter or Bei Saier type band pass filter, but it is several to be not limited to this, can be the band pass filter of other types also, Figure 3 shows that the frequency relation schematic diagram of the id signal of the pass band width of band pass filter of the present invention and reception; Analog-to-digital conversion module is used for the modulated-analog signal of filtered electric signal modulation is converted to digital modulation signals, and digital modulation signals is sampled, and the digital modulation signals that sampling is obtained sends to the signal processing module of its connection; The digital modulation signals that each signal processing module is used for sampling is obtained carries out spectrum analysis; In addition, as additional function, signal processing module can also be according to the frequency and the carrier wavelength of the id signal of storing in advance, and the corresponding relation between the amplitude of the amplitude of id signal and service signal, the amplitude of the service signal that loads on the wavelength of the carrier wave of calculating id signal and this carrier wave, signal processing unit in each arrangements for analyzing frequency can adopt identical or different structure, all can pass through field programmable gate array (Field Programmable Gate Array, FPGA), Digital Signal Processing (Digital SignalProcessing, be called for short DSP) chip or programmable processor, general micro-control unit (Micro Controller Unit, MCU) or application-specific integrated circuit (ASIC) (Application SpecificIntergrated Circuits ASIC) realizes.
In said system, can be according to the frequency band range of id signal, after by the signal branch apparatus modulating wave that receives being divided into several roads, utilize a plurality of arrangements for analyzing frequencies to carry out spectrum analysis simultaneously, so just, can reduce the computing time of spectrum analysis at double, and, can be reduced in the time of visit external memory in the spectrum analysis process at double, thereby improve the operating efficiency of id signal detection system.
Figure 4 shows that the structural representation of id signal detection system embodiment two of the present invention, among this embodiment, also be provided with Signal Conditioning Equipment 4 between photoelectric conversion device 1 and the signal branch apparatus 2, be used for the amplitude of the electric signal modulation that receives is regulated, can be power amplifier or attenuator, generally speaking, loss through transmission path, the power of signal all can reduce, can normally analyze id signal in order to guarantee signal processing unit, just need the electric signal modulation that has loaded id signal is carried out power amplification, at this moment, because most of additional-energies all are harmonic waves in the power amplifier, therefore, band pass filter also should have the function of filtering harmonic wave.
Figure 5 shows that the basic flow sheet of id signal detection method of the present invention, it may further comprise the steps:
After step 1, photoelectric conversion device receive the modulating wave of representing with light signal, this optical signal modulation wave is converted to electric signal modulation, and sends to the signal branch apparatus;
The frequency spectrum of the id signal that loads on step 3, each arrangements for analyzing frequency each electric signal modulation after to shunt is analyzed.
In the step 3, signal processing module specifically adopts the transform domain analysis method, and for example: DFT or FFT method are carried out spectrum analysis to id signal.
Adopting the frequency interval of 1600 id signals, adjacent id signal for one is that 20Hz, frequency resolution are the communication system of 1Hz, referring to Fig. 2, being divided into two-way with the modulating wave that will load id signal is example, and id signal detection method of the present invention is described.The frequency band range of supposing first arrangements for analyzing frequency 31 is 107KHz～133KHz, and wherein, the pass band width of band pass filter 311 is 112KHz～128KHz, and transition band width is 107KHz～112KHz and 128KHz～133KHz; The frequency band range of second arrangements for analyzing frequency 32 is 139KHz～165KHz, wherein, the pass band width of band pass filter 321 is 144KHz～160KHz, transition band width is 139KHz～144KHz and 160KHz～165KHz, for at receiving terminal, be convenient to signal branch apparatus 2 and modulating wave carried out shunt according to the frequency of id signal, frequency band range at this first arrangements for analyzing frequency 31 and second arrangements for analyzing frequency 32, can select id signal is divided into two groups, make every group of frequency interval between the inner adjacent id signal identical, and the frequency interval of jingle bell id signal is organized frequency interval between the inner adjacent id signal greater than each between two groups, for example: selecting wherein, the frequency of 800 id signals is positioned at 112KHz～128KHz interval, frequency interval is 20Hz, the frequency of other 800 id signals is positioned at 144KHz～160KHz interval, frequency interval is 20Hz, modulating wave is carried out shallow amplitude modulation(PAM), (frequency is respectively f1 with these 1600 id signals, f2, ..., f1600) (wavelength is respectively λ 1 to be loaded into modulating wave, λ 2, ..., λ 1600) on, after the modulating wave that has loaded id signal closes ripple through multiplexing equipment (MUX), be transferred to optical splitter by transmission channel, optical splitter goes out fraction with the separate optical signals one that receives and sends to id signal detection system provided by the invention and detect, Figure 6 shows that the flow chart of id signal detection method embodiment one of the present invention, it may further comprise the steps:
If adopt prior art, the required amount of calculation of frequency spectrum that analyzes all id signals is 15 * 2
14, and utilize method of the present invention, amount of calculation only is 14 * 2
14, have only original 14/15; And owing to can handle simultaneously the id signal separated into two parts, only be equivalent to 14 * 2 computing time
13The time that amount of calculation spent, be prior art 46% along separate routes the time not; More for a long time, amount of calculation and computing time, all nearly a step reduced to the signal packets number.Such as, when packet count is 4, to compare with not adopting this method, amount of calculation is reduced to 13/15, and will be reduced to 22% computing time; In addition, because id signal checkout gear of the present invention has adopted the structure of signal being carried out parallel processing, can calculate several signals simultaneously, cause is access external memory simultaneously, shortened the visit used time of external memory at double, for example, in this embodiment, because two signal processing modules can be handled id signal simultaneously, access external memory simultaneously, compared with prior art, make that the time decreased of access external memory is original half, thereby improved the operating efficiency of id signal detection system.
In the step 604, first analog-to-digital conversion module 312 or second analog-to-digital conversion module 322 also can adopt band logical a kind of apple Qwest sampling law or a kind of apple Qwest sampling law that modulation signal is sampled.In the step 605, also can adopt other basic arbitrarily fft algorithms that the id signal in the sampled signal is analyzed.
If adopt id signal detection system shown in Figure 3, then in the step 601, photoelectric conversion device 1 is converted to electric signal modulation with this optical signal modulation wave and sends to Signal Conditioning Equipment 4 after receiving the light signal of the modulating wave that optical splitter sends; After Signal Conditioning Equipment 4 receives electric signal modulation, the power of this electric signal modulation is adjusted into predefined standard value, and the multiple N that is exaggerated of recording power, the signal of telecommunication and multiplication factor N thereof after will amplifying then together send to signal branch apparatus 2; Accordingly, step 603, when the first band pass filter 3N1 and the second band pass filter 3N1 carry out filtering to the electric signal modulation that receives respectively, noise in eliminating electric signal modulation and frequency be the energy of the signal 112KHz～128KHz and 144KHz～160KHz respectively, also will eliminate the harmonic wave in the modulating wave; In the step 605, first signal processing module 313 is analyzed with the id signal in 323 pairs of sampled signals of secondary signal processing module, after calculating the frequency and amplitude of each id signal, also according to the multiplication factor message of the power of 4 pairs of electric signal modulation of Signal Conditioning Equipment, with the amplitude of the id signal that calculates divided by N, obtain original value of id signal, then the power of this original value computing service signal of basis.
Total beneficial effect:
1, id signal detection system provided by the invention comprises the arrangements for analyzing frequency that a plurality of frequency band ranges are different, can be according to the wavelength or the frequency of id signal, modulating wave is carried out shunt according to frequency band range, simultaneously the id signal in the different frequency bands scope is carried out spectrum analysis, compared with prior art, shortened the computing time of spectrum analysis at double;
2, when adopting id signal checkout gear provided by the invention, need not to reduce amount of calculation by the Frequency point that reduces id signal, therefore, with take two kinds of methods to compare for the spectrum analysis speed that improves id signal in the prior art, the precision of analysis height, thus can calculate the wavelength of carrier wave and the power of service signal accurately;
3, because id signal detection system provided by the invention can be divided into modulating wave on several roads, simultaneously the id signal on it is carried out spectrum analysis, compared with prior art, reduce the time of visit external memory at double, thereby improved the operating efficiency of id signal detection system.
It should be noted last that: above embodiment is only in order to illustrating technical scheme of the present invention, but not the present invention is made restrictive sense.Although the present invention is had been described in detail with reference to above-mentioned preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and this modification or be equal to the spirit and scope that replacement does not break away from technical solution of the present invention.
Claims (12)
1. an id signal detection system is characterized in that, comprising:
Photoelectric conversion device is used for optical signal modulation wave is converted to electric signal modulation;
The signal branch apparatus is connected with described photoelectric conversion device, is used for according to the wavelength or the frequency of the id signal that loads on the described electric signal modulation described electric signal modulation being carried out shunt;
The arrangements for analyzing frequency that a plurality of frequency band ranges are different is connected with described signal branch apparatus respectively, is used for the electric signal modulation after the shunt is carried out spectrum analysis.
2. system according to claim 1 is characterized in that, described arrangements for analyzing frequency comprises:
Band pass filter is connected with described signal branch apparatus, is used for the electric signal modulation after the shunt is carried out filtering;
Analog-to-digital conversion module is connected with described band pass filter, is used for the modulated-analog signal of filtered electric signal modulation is converted to digital modulation signals and sampling;
Signal processing module is connected with described analog-to-digital conversion module, and the id signal that loads on the digital modulation signals that is used for sampling is obtained carries out spectrum analysis.
3. system according to claim 2 is characterized in that, described band pass filter is Butterworth type band pass filter, Chebyshev's type band pass filter or Bei Saier type band pass filter.
4. according to any described system of claim 1 to 3, it is characterized in that, also comprise:
Signal Conditioning Equipment is connected with described photoelectric conversion device and described signal branch apparatus respectively, is used for the amplitude of described electric signal modulation is regulated;
Described signal branch apparatus is connected with described photoelectric conversion device by described Signal Conditioning Equipment.
5. an id signal detection method is characterized in that, comprising:
Step 1 is converted to electric signal modulation with optical signal modulation wave;
Step 2 is according to the wavelength or the frequency of the id signal that loads on the described electric signal modulation, to described electric signal modulation along separate routes;
Step 3 is analyzed the frequency spectrum of the id signal that loads on each electric signal modulation after the shunt respectively.
6. method according to claim 5, it is characterized in that, described step 2 is specially: according to the frequency band range of arrangements for analyzing frequency, according to the wavelength or the frequency of the id signal that loads on the described electric signal modulation, described electric signal modulation is carried out shunt.
7. method according to claim 6 is characterized in that, described step 3 is specially:
Described electric signal modulation is carried out filtering; The modulated-analog signal of filtered electric signal modulation is converted to digital modulation signals and sampling; The id signal that loads on the digital modulation signals that sampling is obtained carries out spectrum analysis.
8. method according to claim 7 is characterized in that, in the described step 3, described id signal is carried out spectrum analysis be specially: adopt the transform domain analysis method that described id signal is carried out spectrum analysis.
9. method according to claim 8 is characterized in that, in the described step 3, described transform domain analysis method is specially fast fourier transform method.
10. method according to claim 8, it is characterized in that, after the described step 3, also carry out: by the frequency and the amplitude of the id signal that analyzes, according to the corresponding relation between the amplitude of the amplitude of the frequency of id signal of storage in advance and carrier wavelength and id signal and service signal, know the amplitude of the service signal that loads on the wavelength of carrier wave of described id signal and this carrier wave.
11., it is characterized in that described step 1 is specially: optical signal modulation wave is converted to electric signal modulation according to claim 5,6 or 10 described methods; With the amplitude adjusted of described electric signal modulation is predefined standard amplitude.
12. method according to claim 11, it is characterized in that, described step 3 is specially: adopt fast fourier transform method to analyze the frequency and the amplitude of described id signal, and, calculate original amplitude of described id signal according to the amplitude information of the amplitude adjusted percent information of the ratio of expression amplitude of described electric signal modulation and described standard amplitude and the described id signal that analyzes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101507023A CN1949688B (en) | 2006-10-23 | 2006-10-23 | Marker detector and detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101507023A CN1949688B (en) | 2006-10-23 | 2006-10-23 | Marker detector and detecting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1949688A CN1949688A (en) | 2007-04-18 |
| CN1949688B true CN1949688B (en) | 2010-04-21 |
Family
ID=38019084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101507023A Expired - Fee Related CN1949688B (en) | 2006-10-23 | 2006-10-23 | Marker detector and detecting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1949688B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330485B (en) | 2007-06-20 | 2013-02-27 | 华为技术有限公司 | Optical identification as well as method and device for modulating and demodulating the same |
| CN101729185B (en) * | 2008-10-21 | 2013-06-05 | 华为技术有限公司 | Marking or detecting method of optical signals, device and marking and detecting system |
| CN103344829B (en) * | 2013-06-17 | 2016-02-17 | 中国科学院上海微系统与信息技术研究所 | A kind of simulating signal spectrum analyzer system |
| CN106301629A (en) * | 2015-06-12 | 2017-01-04 | 中兴通讯股份有限公司 | Broadband multi-band signal detecting method and device and wireless communication system |
| CN104967478B (en) * | 2015-06-30 | 2018-06-12 | 国网山东省电力公司济南供电公司 | A kind of intelligent substation luminous power test is divided adapter with multichannel |
| CN112134617A (en) * | 2020-09-21 | 2020-12-25 | 北京基准线科技有限公司 | Spectrum light carrier signal detection device |
| CN112636867B (en) * | 2020-12-31 | 2024-03-15 | 武汉邮电科学研究院有限公司 | Method and system for realizing wavelength label of frequency division multiplexing |
| CN114205001B (en) * | 2021-11-29 | 2023-07-11 | 武汉邮电科学研究院有限公司 | Low-complexity wavelength label generation and detection method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267979A (en) * | 1999-03-19 | 2000-09-27 | Lg情报通信株式会社 | Communication network with channel information monitoring apparatus using spread spectrum method and its method |
| CN1558575A (en) * | 2004-02-04 | 2004-12-29 | 烽火通信科技股份有限公司 | An optical monitoring information communication method and system |
| CN1585307A (en) * | 2003-08-19 | 2005-02-23 | 阿尔卡特公司 | System and method for dynamic control of power loss by contrapropagation of a supervisory channel |
| JP2005151597A (en) * | 1997-12-01 | 2005-06-09 | Nippon Telegr & Teleph Corp <Ntt> | Quality monitor for optical signal |
-
2006
- 2006-10-23 CN CN2006101507023A patent/CN1949688B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005151597A (en) * | 1997-12-01 | 2005-06-09 | Nippon Telegr & Teleph Corp <Ntt> | Quality monitor for optical signal |
| CN1267979A (en) * | 1999-03-19 | 2000-09-27 | Lg情报通信株式会社 | Communication network with channel information monitoring apparatus using spread spectrum method and its method |
| CN1585307A (en) * | 2003-08-19 | 2005-02-23 | 阿尔卡特公司 | System and method for dynamic control of power loss by contrapropagation of a supervisory channel |
| CN1558575A (en) * | 2004-02-04 | 2004-12-29 | 烽火通信科技股份有限公司 | An optical monitoring information communication method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1949688A (en) | 2007-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1949688B (en) | Marker detector and detecting method | |
| CN103973324B (en) | A kind of wideband digital receiver and real time spectrum processing method thereof | |
| DE05815502T1 (en) | MULTI FREQUENCY BAND OPERATION IN WIRELESS NETWORKS | |
| CN102077498B (en) | Apparatus and method for improving the tolerance of tone-based optical channel monitoring to stimulated raman scattering | |
| CN102946275A (en) | Method and device for monitoring OSNR (optical signal to noise ratio) in high-speed DWDM (dense wavelength division multiplexing) system | |
| CN101726664A (en) | Method, device and system for measuring signal phase difference | |
| CN112350691A (en) | Geomagnetic weak signal detection algorithm based on multi-stage filtering extraction and two-stage WOLA structure | |
| CN110048781B (en) | Method and device for identifying optical signal modulation format | |
| CN111049772B (en) | System and method for realizing 5G signal synchronous processing applied to vector signal analyzer platform | |
| CN104168036B (en) | A kind of multi-stage digital channelized receiver | |
| CN108075839A (en) | A kind of apparatus and method for supporting a variety of communication standard signal power detections | |
| US20120328286A1 (en) | System and Method for Calculating Utilization Entropy | |
| CN102209057B (en) | Signal receiver and method for estimating residual doppler frequencies | |
| CN101312376B (en) | Method, apparatus and system for detecting serial connection order of components in optical network | |
| US20070036548A1 (en) | System with a distributed optical performance monitor for use in optical networks | |
| CN103023591A (en) | Sensing node sampling method and sampling device used for frequency spectrum detection | |
| EP1344363B1 (en) | Method of detecting pilot tones in a noisy signal | |
| CN116449099B (en) | Spectrum analysis circuit | |
| CN221151506U (en) | Device for realizing multichannel data acquisition function based on broadband transceiver | |
| JPH08204766A (en) | Frequency analysis detection system for time limit waveform | |
| Zhang et al. | RF channelization technology | |
| AU2009208071B2 (en) | Telephone communications system increasing a reception count twofold | |
| CN117376738A (en) | System for realizing multichannel data acquisition function based on broadband transceiver | |
| CN113162684A (en) | WDM network fault detection terminal equipment | |
| CN103684497A (en) | Frequency band enfolding type digital channelization receiving method based on fractional order Fourier transform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20191023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |