CN102932067A - Microwave photon frequency measuring device based on technologies of compressed sampling and time domain broadening and method thereof - Google Patents
Microwave photon frequency measuring device based on technologies of compressed sampling and time domain broadening and method thereof Download PDFInfo
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- CN102932067A CN102932067A CN2012104557852A CN201210455785A CN102932067A CN 102932067 A CN102932067 A CN 102932067A CN 2012104557852 A CN2012104557852 A CN 2012104557852A CN 201210455785 A CN201210455785 A CN 201210455785A CN 102932067 A CN102932067 A CN 102932067A
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Abstract
The invention discloses a microwave photon frequency measuring device based on technologies of compressed sampling and time domain broadening and a method thereof. A super-continuum spectrum optical source is broadened in time domain through a dispersive medium to achieve mapping from frequency to time. Microwave signals to be measured are modulated through a Mach del modulator on a carrier wave broadened in time domain. Modulated optical signals are further broadened through the dispersive medium so that the frequency of the microwave signals to be measured is reduced. A random bit sequence with +-1 is modulated on the broadened optical signals through the Mach del modulator, and observation data with information of the signals to be measured are obtained through photovoltaic conversion, a low pass filter and an electronic analogue-to-digital converter. The frequency spectrum of the original signals can be recovered through an existing compressed sampling recovery arithmetic. In an existing frequency technology based on the compressed sampling, the original signals are required to be modulated on a random bit sequence reaching Qwest frequency. The microwave photon frequency measuring device can reduce required frequency of the random bit sequence, and at the same time further reduces sampling frequency of the analogue-to-digital converter in the system so as to improver feasibility of the system.
Description
Technical field
The present invention relates to optical communication and field of wireless communication, relate in particular to a kind of microwave photon frequency measuring device and method thereof based on compression sampling and time domain broadening technology.
Background technology
In recent years, because in the military surveillance system, the significant application value of signal(-) carrier frequency measuring technique, microwave signal frequency measuring technique have been subject to various countries researchers' extensive concern and further investigation.Traditional electronics Technology of Frequency Measurement by Using bandwidth, resolution, dynamic range and stable aspect all be restricted, and the microwave photon Technology of Frequency Measurement by Using possesses with a study hotspot roomy, that the advantages such as quality light, low-loss and anti-electromagnetic interference become microwave signal Technology of Frequency Measurement by Using field.The Technology of Frequency Measurement by Using that multifrequency and single-frequency are arranged in the microwave photon frequency measurement technology.In the single-frequency Technology of Frequency Measurement by Using, microwave photon instantaneous frequency measurement technology is simple in structure owing to having, speed fast and be with the advantages such as roomy, becomes the focus of research recent years.This technology realizes frequency to the mapping of amplitude by design luminous power or microwave power comparison curves, realizes the measurement of microwave signal frequency.These class methods be limited in the microwave signal that can only survey single-frequency, but under many circumstances, we need to the measuring of a multi-frequency microwave signal, recover its spectrum information.Traditional signal spectrum restoration methods is by analog to digital converter, and discrete Fourier transform obtains the spectrum information of signal.And traditional analog-to-digital conversion is subject to the nyquist sampling law, and the twice that requires sample frequency to be higher than the measured signal highest frequency could be recovered the frequency spectrum of original signal, and this has limited the signal bandwidth that can measure to a great extent.The compression sampling technology has overcome the restriction of traditional nyquist sampling law, can be at the spectrum information that recovers multiple-frequency signal under the observed frequency of nyquist frequency.
Sparse for the requirement of measured signal at frequency domain based on the Technology of Frequency Measurement by Using of compression sampling.And the signal of required measurement is sparse at frequency domain under many circumstances, is called for short sparse signal.Such as the signal of multi-carrier modulation, voice signal, and gradual smooth signal.D. L. Donoho, " Compressed Sensing; " IEEE Trans. Inf. Theory, 2006, vol. 52, and no. 4, pp., the concept of compressed sensing has been proposed among the 1289-1306, its thought is to a sparse signal, can observe with the speed far below nyquist frequency, obtains the spectrum information of original signal by recovery algorithms.J. Tropp, J. N. Laska, M. F. Duarte, J. K. Romberg and R. G. Baraniuk, " Beyond Nyquist:efficient sampling of sparse bandlimited signals, " IEEE Trans. Signal Process, 2010, vol. 56, no. 1, provided a kind of compression sampling technology based on the random sequence modulation among the pp. 520-544.In this technology, at first will multiply each other with ± 1 random bit sequence and measured signal.Wherein, the change frequency of random bit sequence requires to reach the nyquist frequency of measured signal.Again by the electronic analogue-to-digital converter output digit signals of low pass filter and low sampling rate and with it as observation signal.Realize at last the reconstruct of original signal frequency spectrum by recovery algorithms.J. M. Nichols, F. Bucholtz, " Beating Nyquist with light:a compressive sampled photonic link; " Opt. Express, 2011, vol. 19, no. 8, and the compression sampling principle that proposes based on people such as J. Tropp among the pp. 7339-7348 has realized microwave photon compression sampling technology.This structure utilization Mach increases the Dare modulator and respectively random bit sequence and microwave signal to be measured is modulated on the light signal, and then by opto-electronic conversion, low-pass filtering and electronics analog-to-digital conversion are processed signal.Obtain at last the spectrum information of original signal by recovery algorithms.The method has realized multiplying each other of microwave signal and random bit sequence in the light territory, because the band of electrooptic modulator is wider than electric multiplier, thereby has improved the signal bandwidth that can measure.
The random bit sequence that above-mentioned several compression sampling specification requirement is adopted reaches nyquist frequency.Although these technology greatly reduce the sample frequency of electronic analogue-to-digital converter in the system, required random bit sequence still is subject to the nyquist sampling law.A kind of microwave photon frequency measuring device and method thereof based on compression sampling and time domain broadening technology in this paper introduced the dispersion delay technique, by reducing the frequency of microwave signal to be measured, improve the relative frequency of random bit sequence, so that the compression sampling Technology of Frequency Measurement by Using has been broken through the restriction of Nyquist law fully.
Summary of the invention
The object of the present invention is to provide a kind of microwave photon frequency measuring device and method thereof based on compression sampling and time domain broadening technology, with the frequency spectrum reconfiguration of lower sample frequency realization high-frequency signal, broken through the restriction of traditional Nyquist law.Compared with existing compression sampling Technology of Frequency Measurement by Using, reduced the sample frequency of system.
Microwave photon frequency measuring device based on compression sampling and time domain broadening technology comprises microwave signal to be measured, observing matrix module, observation signal, digital signal processing module, signal output; Microwave signal to be measured produces observation signal through the observing matrix module and is exported by signal output by digital signal processing module; The observing matrix module comprises super continuum source, the first dispersive medium, first Mach increases Dare modulator, the second dispersive medium, second Mach and increases Dare modulator, high-speed photodetector, low pass filter, electronic analogue-to-digital converter, first Mach and increase the rf input port of Dare modulator, first Mach of bigoted voltage input that increases the Dare modulator, second Mach of rf input port that increases the Dare modulator, second Mach of bigoted voltage input that increases the Dare modulator; Super continuum source, the first dispersive medium, first Mach increases Dare modulator, the second dispersive medium, second Mach and increases Dare modulator, high-speed photodetector, low pass filter, electronic analogue-to-digital converter and link to each other in turn, first Mach increases the Dare modulator and is provided with first Mach and increases the rf input port of Dare modulator, first Mach of bigoted voltage input that increases the Dare modulator, second Mach increases the Dare modulator and is provided with second Mach of rf input port that increases the Dare modulator, second Mach of bigoted voltage input that increases the Dare modulator.
Microwave photon frequency measuring method based on compression sampling and time domain broadening technology: super continuum source is by the positive dispersion medium, light carrier after time domain obtains delaying time broadening, the repetition interval of super continuum source equal the time explanation amount of light pulse after by the positive dispersion medium; Microwave signal to be measured is modulated on the light carrier through time domain broadening by first Mach of rf input port that increases the Dare modulator, modulator is operated in the linear bias point, and first Mach of bias voltage that increases the bigoted voltage input input of Dare modulator is first Mach and increases half of Dare modulator half-wave voltage; Signal after the modulation obtains further broadening by the second dispersive medium in time domain; Random bit sequence is modulated on first Mach of modulated optical signal that increases the output of Dare modulator by second Mach of rf input port that increases the Dare modulator, second Mach increases the Dare modulator and is operated in the linear bias point, and second Mach of bias voltage that increases the bigoted voltage input input of Dare modulator is second Mach and increases half of Dare modulator half-wave voltage; Second Mach of delivery outlet that increases the Dare modulator links to each other in turn with high-speed photodetector, low pass filter, electronic analogue-to-digital converter and realizes opto-electronic conversion, filtering and analog-digital conversion function.
The beneficial effect that the present invention has is:
Present existing compression sampling Technology Need is with microwave signal to be measured and the random bit signal multiplication that satisfies nyquist frequency, although at the terminal electronic analogue-to-digital converter that only need connect low speed of system, the frequency of input signal has been subject to the restriction of random bit sequence repetition rate.The Technology of Frequency Measurement by Using that the present invention proposes does not need to input the random bit sequence that satisfies nyquist frequency, has reduced the requirement that Frequency Measurement System is realized; Be conducive to realize the frequency spectrum reconfiguration of high-frequency microwave signal, but improved the range of application of system.
Description of drawings
Fig. 1 is the structural representation of compression sampling frequency measuring device;
Fig. 2 is the detailed device connection layout of Fig. 1;
Among the figure: super continuum source 1, the first dispersive medium 2, first Mach increases Dare modulator 3, the second dispersive medium 4, second Mach increases Dare modulator 5, high-speed photodetector 6, low pass filter 7, electronic analogue-to-digital converter 8, first Mach of rf input port 9 that increases the Dare modulator, first Mach of bigoted voltage input 10 that increases the Dare modulator, second Mach of 11, the second Mach of bigoted voltage input 12 that increase the Dare modulator of rf input port that increase the Dare modulator, microwave signal 13 to be measured, observing matrix module 14, observation signal 15, digital signal processing module 16, signal output 17.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
Shown in accompanying drawing 1,2, comprise microwave signal 13 to be measured, observing matrix module 14, observation signal 15, digital signal processing module 16, signal output 17 based on the microwave photon frequency measuring device of compression sampling and time domain broadening technology; Microwave signal 13 to be measured produces observation signal 15 through observing matrix module 14 and is exported by signal output 17 by digital signal processing module 16; Observing matrix module 14 comprises super continuum source 1, the first dispersive medium 2, first Mach increases Dare modulator 3, the second dispersive medium 4, second Mach and increases Dare modulator 5, high-speed photodetector 6, low pass filter 7, electronic analogue-to-digital converter 8, first Mach and increase the rf input port 9 of Dare modulator, first Mach of bigoted voltage input 10 that increases the Dare modulator, second Mach of 11, the second Mach of bigoted voltage input 12 that increase the Dare modulator of rf input port that increase the Dare modulator; Super continuum source 1, the first dispersive medium 2, first Mach increases Dare modulator 3, the second dispersive medium 4, second Mach increases Dare modulator 5, high-speed photodetector 6, low pass filter 7, electronic analogue-to-digital converter 8 links to each other in turn, first Mach increases Dare modulator 3 and is provided with first Mach of rf input port 9 that increases the Dare modulator, first Mach of bigoted voltage input 10 that increases the Dare modulator, second Mach increases Dare modulator 5 and is provided with second Mach of 11, the second Mach of bigoted voltage input 12 that increase the Dare modulator of rf input port that increase the Dare modulator.
Operation principle of the present invention is as follows:
1, suppose that primary signal x is by one group
N*
NThe sparse signal that represents of orthogonal matrix W,
kBe
Corresponding weight coefficient.Namely
Suppose that T is
N*
NDiagonal matrix, represent the broadening process to microwave signal of the second dispersive medium; Suppose that R is
N*
NDiagonal matrix, representative is with ± 1 random bit sequence; Suppose that F is
N*
NMatrix, represent the filtering of filter; Suppose that D is
L*
N(
LThe matrix of＜＜N) represents the down-sampled process of analog to digital converter; Suppose that y is
L* 1 column vector is the observation matrix of last output.
2, can be obtained by principle 1
, wherein
It is the observing matrix of compression sampling system.Y,
Known with W.Select suitable algorithm to recover
k:
, wherein
Be sparse optimization item, obtain the approximate evaluation of original signal:
Microwave photon frequency measuring method based on compression sampling and time domain broadening technology: super continuum source 1 is by positive dispersion medium 2, light carrier after time domain obtains delaying time broadening, the repetition interval of super continuum source 1 equal light pulse by the time explanation amount behind the first dispersive medium 2; Microwave signal to be measured is modulated on the light carrier through time domain broadening by first Mach of rf input port 9 that increases Dare modulator 3, modulator is operated in the linear bias point, and the bias voltage of the first Mach of bigoted voltage input that increases Dare modulator 3 10 input is first Mach and increases half of Dare modulator 3 half-wave voltages; Signal after the modulation obtains further broadening by the second dispersive medium 4 in time domain; Be lower than is that the random bit sequence of Qwest's frequency is modulated on first Mach of modulated optical signal that increases 3 outputs of Dare modulator by second Mach of rf input port 11 that increases Dare modulator 5, second Mach increases Dare modulator 5 and is operated in the linear bias point, and second Mach of bias voltage that increases bigoted voltage input 12 inputs of Dare modulator 5 is second Mach and increases half of Dare modulator 5 half-wave voltages; Second Mach of delivery outlet that increases Dare modulator 5 links to each other in turn with high-speed photodetector 6, low pass filter 7, electronic analogue-to-digital converter 8 and realizes opto-electronic conversion, filtering and analog-digital conversion function.
Claims (2)
1. the microwave photon frequency measuring device based on compression sampling and time domain broadening technology is characterized in that comprising microwave signal to be measured (13), observing matrix module (14), observation signal (15), digital signal processing module (16), signal output (17); Microwave signal to be measured (13) produces observation signal (15) through observing matrix module (14) and is exported by signal output (17) by digital signal processing module (16); Observing matrix module (14) comprises super continuum source (1), the first dispersive medium (2), first Mach increases Dare modulator (3), the second dispersive medium (4), second Mach increases Dare modulator (5), high-speed photodetector (6), low pass filter (7), electronic analogue-to-digital converter (8), first Mach of rf input port (9) that increases the Dare modulator, first Mach of bigoted voltage input (10) that increases the Dare modulator, second Mach of rf input port (11) that increases the Dare modulator, second Mach of bigoted voltage input (12) that increases the Dare modulator; Super continuum source (1), the first dispersive medium (2), first Mach increase Dare modulator (3), the second dispersive medium (4), second Mach and increase Dare modulator (5), high-speed photodetector (6), low pass filter (7), electronic analogue-to-digital converter (8) and link to each other in turn; First Mach increases Dare modulator (3) and is provided with first Mach and increases the rf input port (9) of Dare modulator, the bigoted voltage input (10) that first Mach increases the Dare modulator, second Mach increases Dare modulator (5) and is provided with second Mach of rf input port (11) that increases the Dare modulator, second Mach of bigoted voltage input (12) that increases the Dare modulator.
2. microwave photon frequency measuring method based on compression sampling and time domain broadening technology that use is installed as claimed in claim 1, it is characterized in that: super continuum source (1) is by the first dispersive medium (2), light carrier after time domain obtains delaying time broadening, the repetition interval of super continuum source (1) equal light pulse by the time explanation amount behind the first dispersive medium (2); Microwave signal to be measured is modulated on the light carrier through time domain broadening by first Mach of rf input port (9) that increases Dare modulator (3), modulator is operated in the linear bias point, and the bias voltage of first Mach of bigoted voltage input (10) input that increases Dare modulator (3) is first Mach and increases half of Dare modulator (3) half-wave voltage; Signal after the modulation obtains further broadening by the second dispersive medium (4) in time domain; Random bit sequence is modulated on first Mach of modulated optical signal that increases Dare modulator (3) output by second Mach of rf input port (11) that increases Dare modulator (5), second Mach increases Dare modulator (5) and is operated in the linear bias point, and second Mach of bias voltage that increases bigoted voltage input (12) input of Dare modulator (5) is second Mach and increases half of Dare modulator (5) half-wave voltage; Second Mach of delivery outlet that increases Dare modulator (5) links to each other in turn with high-speed photodetector (6), low pass filter (7), electronic analogue-to-digital converter (8) and realizes opto-electronic conversion, filtering and analog-digital conversion function.
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Cited By (5)
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| CN106253980A (en) * | 2016-09-14 | 2016-12-21 | 华中科技大学 | A kind of ultrafast radio spectrum measuring method and system |
| CN108880666A (en) * | 2018-03-26 | 2018-11-23 | 北京大学 | A kind of serial communication analyzer and its wave reconstruction method based on microwave photon technology |
| CN111884727A (en) * | 2020-07-15 | 2020-11-03 | 杭州电子科技大学 | High-speed photon digital-to-analog conversion method and system based on digital mapping |
| CN113938213A (en) * | 2021-10-15 | 2022-01-14 | 西南交通大学 | Photonic simulation method for broadband microwave and millimeter wave Doppler effect |
| CN115208463A (en) * | 2021-04-09 | 2022-10-18 | 西安电子科技大学 | Optical sampling multi-target frequency measurement method based on phase spectrum analysis |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110064116A1 (en) * | 2005-11-07 | 2011-03-17 | Alcatel Lucent | Spreading device and despreading device for radio communications in the presence of an off-axis power spectral density constraint |
| CN102025420A (en) * | 2010-11-30 | 2011-04-20 | 浙江大学 | Single-fiber photocarrier transmission system and method of wideband radar signals and digital control signals |
-
2012
- 2012-11-14 CN CN201210455785.2A patent/CN102932067B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110064116A1 (en) * | 2005-11-07 | 2011-03-17 | Alcatel Lucent | Spreading device and despreading device for radio communications in the presence of an off-axis power spectral density constraint |
| CN102025420A (en) * | 2010-11-30 | 2011-04-20 | 浙江大学 | Single-fiber photocarrier transmission system and method of wideband radar signals and digital control signals |
Cited By (9)
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| CN106253980A (en) * | 2016-09-14 | 2016-12-21 | 华中科技大学 | A kind of ultrafast radio spectrum measuring method and system |
| CN106253980B (en) * | 2016-09-14 | 2019-03-08 | 华中科技大学 | A kind of ultrafast radio spectrum measurement method and system |
| CN108880666A (en) * | 2018-03-26 | 2018-11-23 | 北京大学 | A kind of serial communication analyzer and its wave reconstruction method based on microwave photon technology |
| CN108880666B (en) * | 2018-03-26 | 2020-10-09 | 北京大学 | Serial communication analyzer based on microwave photon technology and waveform reconstruction method thereof |
| CN111884727A (en) * | 2020-07-15 | 2020-11-03 | 杭州电子科技大学 | High-speed photon digital-to-analog conversion method and system based on digital mapping |
| CN115208463A (en) * | 2021-04-09 | 2022-10-18 | 西安电子科技大学 | Optical sampling multi-target frequency measurement method based on phase spectrum analysis |
| CN115208463B (en) * | 2021-04-09 | 2024-01-26 | 西安电子科技大学 | Optical sampling multi-target frequency measurement method based on phase spectrum analysis |
| CN113938213A (en) * | 2021-10-15 | 2022-01-14 | 西南交通大学 | Photonic simulation method for broadband microwave and millimeter wave Doppler effect |
| CN113938213B (en) * | 2021-10-15 | 2022-12-06 | 西南交通大学 | Photonic simulation method for broadband microwave and millimeter wave Doppler effect |
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