CN106940440B - A kind of transceiving integrated radar system of full optical link gain and application method - Google Patents
A kind of transceiving integrated radar system of full optical link gain and application method Download PDFInfo
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- CN106940440B CN106940440B CN201710175162.2A CN201710175162A CN106940440B CN 106940440 B CN106940440 B CN 106940440B CN 201710175162 A CN201710175162 A CN 201710175162A CN 106940440 B CN106940440 B CN 106940440B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/483—Details of pulse systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
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- Radar, Positioning & Navigation (AREA)
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Abstract
A kind of transceiving integrated radar system of full optical link gain and application method, including pulsed mode-locked laser, waveform processing module, full optic relay amplification module, wideband photodetectors, electric ring switch, antenna, receiving module.Pulsed mode-locked laser includes the first output port and second output terminal mouth；One output end of pulsed mode-locked laser is connect with the light input end of waveform processing module, the light output end of waveform processing module is connect with full optic relay amplification module input terminal, output end, wideband photodetectors, electric ring switch, the antenna of full optic relay amplification module are sequentially connected, and another output end of electric ring switch and the second output terminal of pulsed mode-locked laser are connect with receiving module.The advantages of invention is: the transmitting-receiving source based on mode-locked laser as radar system improves the stability of system, while reducing system cost, overcome conventional electronics method bandwidth, weight, volume, in terms of problem.
Description
Technical field
The present invention relates to field of radar, the transceiving integrated radar system of especially a kind of Quan Guanglian gain and application method.
Background technique
In recent years, with the progress of opto-electronic device and Fibre Optical Communication Technology, using optical signal as transport vehicle, space or
For optical fiber as medium, the demand that a certain physical message is detected, transmitted and handled is increasing.In traditional fiber optic communication
While technology develops, there is the emerging research field such as Fibre Optical Sensor, laser radar, Microwave photonics, integrated optics,
And achieve fast development.
With the progress of making a breakthrough property of Radar Technology, future battlefield will form one with high density, multiple spectra, multi-parameter
The threat radar signal environment that agile and a variety of working systems and a variety of Anti-Jamming Technique integrated applications are characterized.
In order to adapt to increasingly complex electromagnetic environment, requirements at the higher level, function also proposed to novel electron war equipment
The multiplicity and complexity become.Simple function is no longer satisfied operational need, and all kinds of vehicle-mounted, airborne and spaceborne electronic warfares load onto woods
Vertical to arrange various antenna aperatures and corresponding radio-frequency front-end mouth, this directly results in the requirement to platform size, power consumption increasingly
Height, and radio-frequency module type is also more and more, and processing circuit also becomes increasingly complex.
In order to preferably resist electromagnetic interference, transmission loss is reduced, researcher proposes full optical radar.The present invention gives
Go out a kind of full optical link gain Integrative Radar system schema, can be realized full optic relay amplification, full light frequency conversion and full gloss
Sample radar.
Summary of the invention
Technical problem to be solved by the present invention lies in complicated electromagnetic environment, it is dry how preferably to resist electromagnetism
It disturbs, reduces transmission loss, therefore a kind of transceiving integrated radar system of Quan Guanglian gain and application method are provided herein.
A kind of complete transceiving integrated radar system of optical link gain, which is characterized in that including pulsed mode-locked laser, waveform
Processing module, full optic relay amplification module, wideband photodetectors, electric ring switch, antenna, receiving module；
Pulsed mode-locked laser includes the first output port and second output terminal mouth；The waveform processing module includes that light is defeated
Inbound port c and optical output port d, full optic relay amplification module include output port g, optical output port c and pulse mode-locked laser
First output port of device connects, and output port d is connect with the input port of full optic relay amplification module, and full optic relay amplifies mould
The output port g of block and the input port of wideband photodetectors connect；
Electric ring switch includes that mono- output port j of an input port h and a bidirectional port i, electric ring switch are defeated
Inbound port h receives the radar signal of photodetector output and exports by bidirectional port i to antenna；
Antenna is used to emit radar signal, in addition, antenna also receives detection echo-signal, then by the echo of detection
Signal inputs to the output port j of electric ring switch by the bidirectional port i of electric ring switch；
Receiving module is divided into light input port l, electrical modulation port k, and the light that wherein pulsed mode-locked laser generates passes through
Second output terminal mouth connect with light input port l and is input in receiving module, and the output port j of electric ring switch and electricity are adjusted
K connection in port processed.
Optimization, waveform processing module includes the first intensity modulator, pattern generator, continuous wave microwave signal source, institute
Stating the first intensity modulator includes light input port c, optical output port d, electrical input mouth a, electrical input mouth b, and the light is defeated
The connection of first output port of inbound port c and pulsed mode-locked laser, the input of optical output port d and full optic relay amplification module
Port connection；The output port of the pattern generator is connect with electrical input mouth a, continuous wave microwave signal source and electrical input
Mouth b connection.
Optimization, the full optic relay amplification module includes tunable laser, optical circulator, dispersion shifted optical fiber, institute
Stating optical circulator includes input port e, bidirectional port f, output port g, the output port of input port e and tunable laser
Connection, bidirectional port f are connect with dispersion shifted optical fiber, the input port connection of output port g and wideband photodetectors.
Optimization, the dispersion shifted optical fiber receives the optical signal and optical circulator exported from the first intensity modulator
Bidirectional port f output excited Brillouin pump light.
Optimization, the receiving module include the second intensity modulator, gloss egf block, electric treatment chip, described second
Intensity modulator includes light input port l, electrical modulation port k, optical output port m, the optical output port m and gloss egf block
Input port connection, the output port of the gloss egf block connect with the input port of electric treatment chip.
Optimization, the mode locking pulse mode-locked laser is the mode locking mechanism based on optical-fibre theory or the lock based on semiconductor
Mould mechanism.
Optimization, the pattern generator is electric signal generator or electric arbitrary waveform generator.
Optimization, the output power of the tunable laser is not less than 6mW.
Optimization, first intensity modulator is double flat weighing apparatus mach zhender intensity modulator.
A method of using above-mentioned radar system, which is characterized in that pulsed mode-locked laser is divided into two through photo-coupler
Road, inputs to the first intensity modulator all the way, and another way inputs to the second intensity modulator；The two-way electricity of first intensity modulator
Input port a, b input radar pulse signal by arbitrary waveform generator respectively and microwave signal source inputs shift frequency microwave letter
Number, the optical output port d connection dispersion shifted optical fiber of the first intensity modulator；At the same time, using tunable laser to light
The input port e of circulator inputs continuous wave optical signal, inputs one section of dispersion shifted optical fiber by optical circulator bidirectional port f,
Signal light of the circulator output port g coupling output after excited Brillouin acts on carries out photosignal by photodetector
Electric ring switch is inputed to after conversion, and is exported by ring switch bidirectional port i and launched to antenna；It is corresponding, warp
It crosses the received echo-signal of antenna and passes through the second intensity modulator for the signal loading to be processed to mode locking pulse mode-locked laser
On the signal of output, optical sampling is then carried out by gloss egf block, and eventually drop to after low frequency in electric treatment chip into
Row electric treatment.
The present invention has the advantages that
(1) the advantage of the invention is that realizing the transmitting of radar signal by single pulsed mode-locked laser and connecing
It receives, produces overloading frequency point at the same time instead of the light emitting and received same local oscillator requirement of conventional radar using full light and believe
Number, the full frequency band for realizing radar signal is switched fast and high sensitivity detection, and utilizes stimulated Brillouin scattering effect
Selective amplification is carried out to the sideband of needs, eliminates the demand to subsequent electrical signal emission port to electrical filter, and right
The detectivity and saturation tolerance of photodetector lower the requirement；In receiving port, carried out using same light-pulse generator
Full Optical Sampling reduces high band requirement of traditional electric receiving port to electric treatment chip.
(2) present invention in pulsed mode-locked laser be used as light emitting and received light source, pulsed mode-locked laser generation
For light by the second intensity modulator by the received echo-signal of radar, the electrical input mouth of the second intensity modulator is modulated to light arteries and veins
In the amplitude of punching, and exported by optical output port m.
(3) continuous wave microwave signal source is mainly used for the light pulse exported to pulsed mode-locked laser in frequency in the present invention
The shift frequency of multi-wavelength is realized on domain.Continuous wave microwave signal source passes through double flat weighing apparatus mach zhender intensity modulator electrical input mouth
B and the bias point voltage by controlling the corresponding intensity modulator in the port realize Double Sideband Suppressed Carrier modulation.
(4) tunable laser exports continuous wave optical signal and is used for excited Brillouin pump light source in the present invention, wants to it
Seeking Truth optical power meets the power requirement of the pumping light power of stimulated Brillouin scattering effect, and wherein pumping light power is tunable
Optical power after laser output after optical circulator.
(5) optical circulator is mainly used for pump light and signal light single effect and couples output to photodetector.
(6) dispersion shifted optical fiber receives optical signal and the ring of light from double flat weighing apparatus mach zhender intensity modulator output
The output excited Brillouin pump light of the bidirectional port f of shape device, and generation excited Brillouin is non-thread in the dispersion shifted optical fiber
Property effect, selective amplification is carried out to the optical signal that is amplified of expectation.
(7) wideband photodetectors are mainly used for carrying out selective light amplification to the signal light after pumping light action, and want
It asks the detectivity of photodetector lower, can ignore that not by the signal frequency side band of pumping amplification.
(8) gloss egf block is used to receive the output modulation pulse of the second intensity modulator, and former using Optical Time Division Multiplexing
Reason carries out time sharing sampling to pulse, reduces sample rate, and carry out photoelectric conversion.Electric treatment module comes from gloss original mold for receiving
The output electric signal of block carries out electric treatment, finally obtains the information of determinand.
(9) the transmitting-receiving source the present invention is based on mode-locked laser as radar system, improves the stability of system, drops simultaneously
Low system cost.The load of radar baseband signal is carried out simultaneously to mode-locked laser using double flat weighing apparatus mach zhender intensity modulator
And frequency-conversion processing；Selectivity is needed to amplify specific sideband according to system using optical fiber stimulated Brillouin scattering effect, by low
The CF signal that sensitivity photodetectors are needed.
(10) the radar transmit-receive system generated based on this technology, overcomes conventional electronics method in bandwidth, weight, body
The problem of product, electromagnetic compatibility etc..
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the transceiving integrated radar system of Quan Guanglian gain of the present invention.
Specific embodiment
As shown in Figure 1, a kind of complete transceiving integrated radar system of optical link gain, including pulsed mode-locked laser 1, waveform
Processing module, full optic relay amplification module, wideband photodetectors 8, electric ring switch 9, antenna 10, receiving module.
Pulsed mode-locked laser 1 includes the first output port and second output terminal mouth；Waveform processing module includes the last the first
Modulator 2, pattern generator 3, continuous wave microwave signal source 4 are spent, first intensity modulator 2 includes light input port c, light
Output port d, electrical input mouth a, electrical input mouth b.The full optic relay amplification module includes tunable laser 5, the ring of light
Shape device 6, dispersion shifted optical fiber 7, the optical circulator 6 include input port e, bidirectional port f, output port g.The reception mould
Block includes the second intensity modulator 11, gloss egf block 12, electric treatment chip 13.
The first intensity modulator 2 in the waveform processing module includes light input port c and optical output port d, Quan Guang
Relaying the optical circulator 6 in amplification module includes output port g, the first output of optical output port c and pulsed mode-locked laser 1
Port connection, output port d are connect with the input port of the dispersion shifted optical fiber 7 in full optic relay amplification module, output port g
It is connect with the input port of wideband photodetectors 8.The output port of the pattern generator 3 is connect with electrical input mouth a, even
Continuous wave microwave signal source 4 is connect with electrical input mouth b.
The input port e of optical circulator 6 is connect with the output port of tunable laser 5, bidirectional port f and dispersion shift
Optical fiber 7 connects, and output port g is connect with the input port of wideband photodetectors 8.
Electric ring switch 9 includes mono- output port j of an an input port h and bidirectional port i, electric ring switch 9
Input port h receives the radar signal of photodetector output and exports by bidirectional port i to antenna 10.
Antenna 10 is used to emit radar signal, in addition, antenna 10 also receives detection echo-signal, then by detection
Echo-signal inputs to the output port j of electric ring switch 9 by the bidirectional port i of electric ring switch 9.
Receiving module is divided into light input port l, electrical modulation port k, the light warp that wherein pulsed mode-locked laser 1 generates
Cross second output terminal mouth and connect with light input port l and is input in receiving module, and the output port j of electric ring switch 9 with
The k connection of electrical modulation port.
Second intensity modulator 11 includes light input port l, electrical modulation port k, optical output port m, and the light is defeated
Exit port m is connect with the input port of gloss egf block 12, the output port and electric treatment chip 13 of the gloss egf block 12
Input port connection.
For pulsed mode-locked laser 1 as light emitting and received light source, the light that pulsed mode-locked laser 1 generates passes through second
The received echo-signal of radar, the electrical input mouth of the second intensity modulator 11 are modulated to the width of light pulse by intensity modulator 11
On degree.
Continuous wave microwave signal source 4 is mainly used for realizing the light pulse that pulsed mode-locked laser 1 exports on frequency domain
The shift frequency of multi-wavelength.Continuous wave microwave signal source 4 is by double flat weighing apparatus mach zhender intensity modulator electrical input mouth b and leads to
Cross the bias point voltage realization Double Sideband Suppressed Carrier modulation for controlling the corresponding intensity modulator in the port.
Tunable laser 5 exports continuous wave optical signal for excited Brillouin pump light source, requires it to be optical power
Meet the power requirement of the pumping light power of stimulated Brillouin scattering effect, wherein pumping light power is that tunable laser 5 is defeated
Optical power after out after optical circulator 6.
Optical circulator 6 is mainly used for pump light and signal light single effect and couples output to photodetector.
Wideband photodetectors 8 are mainly used for carrying out selective light amplification to the signal light after pumping light action, and require
The detectivity of photodetector is lower, can ignore that not by the signal frequency side band of pumping amplification.
Gloss egf block 12 is used to receive the output modulation pulse of the second intensity modulator 11, and former using Optical Time Division Multiplexing
Reason carries out time sharing sampling to pulse, reduces sample rate, and carry out photoelectric conversion.Electric treatment module comes from gloss original mold for receiving
The output electric signal of block 12 carries out electric treatment, finally obtains the information of determinand.
Optimization, the mode locking pulse mode-locked laser 1 is for the mode locking mechanism based on optical-fibre theory or based on semiconductor
Mode locking mechanism.
Optimization, the pattern generator 3 is electric signal generator or electric arbitrary waveform generator.
Optimization, the output power of the tunable laser 5 is not less than 6mW.
Optimization, first intensity modulator 2 is double flat weighing apparatus mach zhender intensity modulator.
The dispersion shifted optical fiber 7 receives optical signal and light from double flat weighing apparatus mach zhender intensity modulator output
The excited Brillouin pump light of the output of the bidirectional port f of circulator 6, and be excited in cloth in the dispersion shifted optical fiber 7
Deep nonlinear effect carries out selective amplification to the optical signal that expectation is amplified.
Optimization, double flat weighing apparatus mach zhender intensity modulator is divided into two-way intensity modulator up and down in the present invention, wherein
For upper road intensity modulator by control bias voltage for realizing the linear modulation to pulse electrical signal, lower road intensity modulator is logical
Control bias voltage is crossed for realizing the Double Sideband Suppressed Carrier modulation to shift frequency electric signal.
A method of using above-mentioned radar system, pulsed mode-locked laser 1 is divided into two-way through photo-coupler, inputs all the way
To the first intensity modulator 2, another way inputs to the second intensity modulator 11；The two-way electrical input of first intensity modulator 2
Mouthful a, b input radar pulse signal by arbitrary waveform generator respectively and microwave signal source inputs shift frequency microwave signal, and first
The optical output port d connection dispersion shifted optical fiber 7 of intensity modulator 2；At the same time, using tunable laser 5 to ring of light shape
The input port e of device 6 inputs continuous wave optical signal, inputs one section of dispersion shifted optical fiber 7, ring by 6 bidirectional port f of optical circulator
Signal light of the shape device output port g coupling output after excited Brillouin acts on carries out photosignal by photodetector and turns
Electric ring switch 9 is inputed to after changing, and is exported by ring switch bidirectional port i and launched to antenna 10；It is corresponding, warp
The received echo-signal of antenna 10 is crossed to swash the signal loading to be processed to mode locking pulse mode locking by the second intensity modulator 11
On the signal that light device 1 exports, optical sampling is then carried out by gloss egf block 12, and is eventually dropped to after low frequency in electric treatment core
Electric treatment is carried out in piece 13.
The above is only the preferred embodiments of the invention, are not intended to limit the invention creation, all in the present invention
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the invention within the spirit and principle of creation
Within the scope of shield.
Claims (8)
1. a kind of complete transceiving integrated radar system of optical link gain, which is characterized in that at pulsed mode-locked laser, waveform
Manage module, full optic relay amplification module, wideband photodetectors, electric ring switch, antenna, receiving module；
Pulsed mode-locked laser includes the first output port and second output terminal mouth；The waveform processing module includes light input end
Mouthful c and optical output port d, full optic relay amplification module include output port g and tunable laser, optical output port c and arteries and veins
The first output port connection of mode-locked laser is rushed, output port d is connect with the input port of full optic relay amplification module, Quan Guang
The input port of the output port g and wideband photodetectors that relay amplification module connect；Tunable laser exports continuous wave
Optical signal is used for excited Brillouin pump light source, and the optical power of tunable laser meets the pumping of stimulated Brillouin scattering effect
The power requirement of optical power；
Electric ring switch includes mono- output port j of an an input port h and bidirectional port i, electric ring switch input terminal
Mouth h receives the radar signal of photodetector output and exports by bidirectional port i to antenna；
Antenna is used to emit radar signal, in addition, antenna also receives detection echo-signal, then by the echo-signal of detection
The output port j of electric ring switch is inputed to by the bidirectional port i of electric ring switch；
Receiving module is divided into light input port l, electrical modulation port k, and the light that wherein pulsed mode-locked laser generates passes through second
Output port connect with light input port l and is input in receiving module, and the output port j of electric ring switch and electrical modulation end
Mouth k connection；
Waveform processing module includes the first intensity modulator, pattern generator, continuous wave microwave signal source, the first intensity tune
Device processed is double flat weighing apparatus mach zhender intensity modulator, and first intensity modulator includes light input port c, optical output port
First output port of d, electrical input mouth a, electrical input mouth b, the light input port c and pulsed mode-locked laser connects,
Optical output port d is connect with the input port of full optic relay amplification module；The output port and electricity of the pattern generator input
Port a connection, continuous wave microwave signal source are connect with electrical input mouth b.
2. a kind of complete transceiving integrated radar system of optical link gain according to claim 1, which is characterized in that described complete
It further includes optical circulator, dispersion shifted optical fiber that light, which relays amplification module, and the optical circulator includes input port e, bidirectional port
F, input port e and the output port of tunable laser connect, and bidirectional port f is connect with dispersion shifted optical fiber.
3. a kind of complete transceiving integrated radar system of optical link gain according to claim 2, which is characterized in that the color
Dissipate shifted fiber receive the optical signal and optical circulator that export from the first intensity modulator bidirectional port f output by
Swash Brillouin's pump light.
4. a kind of complete transceiving integrated radar system of optical link gain according to claim 1, which is characterized in that described to connect
Receiving module includes the second intensity modulator, gloss egf block, electric treatment chip, and second intensity modulator includes light input end
Mouthful l, electrical modulation port k, optical output port m, the optical output port m are connect with the input port of gloss egf block, the light
The output port of sampling module is connect with the input port of electric treatment chip.
5. a kind of complete transceiving integrated radar system of optical link gain according to claim 1, which is characterized in that the lock
Mould pulsed mode-locked laser is the mode locking mechanism based on optical-fibre theory or the mode locking mechanism based on semiconductor.
6. a kind of complete transceiving integrated radar system of optical link gain according to claim 1, which is characterized in that the code
Type generator is electric signal generator or electric arbitrary waveform generator.
7. a kind of complete transceiving integrated radar system of optical link gain according to claim 2, which is characterized in that it is described can
The output power of tuned laser is not less than 6mW.
8. a kind of method using the radar system as described in claim 1-7 any one, which is characterized in that pulse mode-locked to swash
Light device is divided into two-way through photo-coupler, inputs to the first intensity modulator all the way, and another way inputs to the second intensity modulator；The
Two-way electrical input the mouth a, b of one intensity modulator input radar pulse signal by arbitrary waveform generator respectively and microwave is believed
Number source inputs shift frequency microwave signal, the optical output port d connection dispersion shifted optical fiber of the first intensity modulator；At the same time, sharp
Continuous wave optical signal is inputted to the input port e of optical circulator with tunable laser, is inputted by optical circulator bidirectional port f
One section of dispersion shifted optical fiber, signal light of the circulator output port g coupling output after excited Brillouin acts on pass through photoelectricity
Detector inputs to electric ring switch after carrying out photoelectric signal transformation, and exports by ring switch bidirectional port i and send out to antenna
It is shot out；It is corresponding, the echo-signal is loaded by the second intensity modulator by the received echo-signal of antenna
On the signal of mode locking pulse mode-locked laser output, optical sampling is then carried out by gloss egf block, and eventually drop to low frequency
Electric treatment is carried out in electric treatment chip afterwards.
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| CN114047507B (en) * | 2022-01-12 | 2022-04-22 | 浙江大学 | Microwave-laser radar integrated chip, application system and detection method |
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