CN106330301A - Ground communication performance verification and test system of solar pumped laser - Google Patents
Ground communication performance verification and test system of solar pumped laser Download PDFInfo
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- CN106330301A CN106330301A CN201610666940.3A CN201610666940A CN106330301A CN 106330301 A CN106330301 A CN 106330301A CN 201610666940 A CN201610666940 A CN 201610666940A CN 106330301 A CN106330301 A CN 106330301A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0775—Performance monitoring and measurement of transmission parameters
Abstract
The invention provides a ground communication performance verification and test system of a solar pumped laser. The system comprises a test signal generation module, a carrier communication module and a test signal reduction and verification module, wherein the test signal generation module is used for generating a test signal and transmitting the test signal to the carrier communication module; the carrier communication module is used for loading the test signal in the carrier of the laser, transmitting the test signal to a transmission space by an optical transmitting antenna and converting an optical signal received by a corresponding optical receiving antenna into an electric signal; and the test signal reduction and verification module is used for amplifying and reducing the received electric signal. The system provided by the invention adopts integrated processing and realizes novel combination of crystals, automatic half-wave voltage adjustment, virtual instrument test, efficient measurement and other techniques to carry out comprehensive test and verification on the communication parameters of the entire ground communication system, and the test and verification are realized in multiple test environments, low test cost and complete performance parameter coverage.
Description
Technical field
The present invention relates to technical field of photo communication, in particular it relates to a kind of Nd:YAG (Neodymium-doped
Yttrium Aluminium Garnet, yag crystal) sunlight pump laser ground communication performance verification and survey
Test system.
Background technology
Following communication pattern requires all the more to realize two-forty, long-distance transmissions, but is limited by microwave device and frequency
The restriction of territory bandwidth, the development of microwave communication faces bottleneck, and this also makes optical communication technique will become the important side of future communications
Formula.Compared with traditional microwave communication, optic communication not only has the bandwidth of super large, it is possible to carry out the high-speed data of tens of Ji per second
Transmission, and due to optic communication extremely crypticity so that it possesses stronger function of keeping secret, and additionally light wave is difficult to decline in space
The advantage subtracted makes it become the important way of deep space communication.On the ground, FSO is undertaking short distance field
The tasks such as communication, emergency communication, star ground high speed communication have become emerging strength.
The present invention proposes a kind of solar-pumped optic communication GCS Ground Communication System, and this system has been carried out performance test and
Checking.The present invention uses integrated approach, and by realizing the novel compositions of crystal, half-wave voltage adjusts automatically, virtual instrument is surveyed
Each messaging parameter of whole GCS Ground Communication System is tested comprehensively and verifies by the technology such as examination, high efficiency measuring and calculating, it is achieved that suitable
Under multiple test environment, the test and validation of low testing cost, full performance parameter covering.
Summary of the invention
For defect of the prior art, it is an object of the invention to provide a kind of sunlight pump laser ground communication
It is able to verify that and test system.
The sunlight pump laser ground communication performance verification provided according to the present invention and test system, including test letter
Number there is module, carrier communication module and test signals revivification and authentication module,
Described test signal generating module, for producing several different test signal, and transmits to carrier communication mould
Block；
Described carrier communication module, for by test signal loading to the carrier wave of laser instrument, being sent out by optical transmitting antenna
It is incident upon transmission space, and transmission is to test signal also after the optical signal that corresponding optical receiver antenna receives is converted into the signal of telecommunication
Former and authentication module；
Described test signals revivification and authentication module, for being amplified the signal of telecommunication received, reduce.
Preferably, described test signal generating module includes: signal generator, signal coder and signal amplifier,
Specifically, generate test data file by MATLAB, data file programming is entered in FPGA device, is grasped by corresponding logic
Making to add beacon to each multi-bit data, and generate the test signal of assigned rate, the test signal of generation is through logic
Coded treatment, signal transmits to carrier communication module after amplifying.
Preferably, described carrier communication module includes: signal modulator, optical transmitting antenna, optical receiver antenna, half-wave
Voltage gain automatic adjustment unit, specifically, in general's test signal loading to carrier wave laser, and by optical transmitting antenna by light
Signal exports, and at receiving terminal Application Optics reception antenna receiving optical signal, corresponding optical signalling is carried out opto-electronic conversion,
The signal of telecommunication after conversion is sent into test signals revivification and checking district；Wherein, described half-wave voltage Gain Automatic regulation unit is used
According to Output optical power, the half-wave voltage of laser instrument being automatically adjusted.
Preferably, described half-wave voltage Gain Automatic regulation unit includes: temperature sensing controller, gain control unit；
Specifically, when changing the temperature of laser instrument, laser temperature and Output optical power value are adopted by gain control unit in real time
Collecting and send into single-chip microcomputer, carrying out data process with the value of setting in single-chip microcomputer, described single-chip microcomputer sends instruction and adjusts laser instrument
Half-wave voltage.
Preferably, described test signals revivification includes with authentication module: signal amplifier, fpga chip, specifically, passes through
The signal of telecommunication that fpga chip test signal amplifier amplifies, the data generated when being tested by fpga chip are carried out with former test signal
Comparison and process, it is achieved the measuring and calculating to communication bit error rates；And utilize NI PXIE board that messaging parameter is tested, it is achieved
The virtualization instrument checking to communication performance.
Preferably, described sunlight pump laser is Nd:YAG solar-pumped laser instrument, and Nd:YAG is also known as yttroalumite pomegranate
Stone crystal, and comprise the crystal of four connection in series-parallel combinations, each crystal is supplied by independent half-wave voltage and signal drives
Module supply half-wave voltage.
Preferably, described test signals revivification also includes with authentication module: transmitting terminal computer, center processing computer,
Receiving end computer, described transmitting terminal computer recording test signal generating module sends the moment of signal, described receiving terminal meter
Calculation machine record test signals revivification module receives the moment of the signal of telecommunication；Described center processing computer installation calculates at transmitting terminal
Between machine and receiving end computer the two terminal computer, by offsetting the line delay time of two terminal computers, with
And consider the time delay of disparate modules, it is achieved that the simple measuring and calculating to communication delay.
Compared with prior art, the present invention has a following beneficial effect:
1, the present invention can carry out the measurement of many kinds of parameters to sunlight pump laser GCS Ground Communication System, and can
Take into account and multiple free optic communication ground system Progressive symmetric erythrokeratodermia is able to verify that and parameter testing；Wherein use four Nd:YAG series-parallel
Combinative structure, effectively reduces the supply pressure of system half-wave voltage, simultaneously because half-wave voltage reduces, also can effectively reduce
Temperature during crystal work, reduces the self-regulation frequency of automatic gain system, effectively raises the stability of system.
2, the sunlight pump laser ground communication performance verification that the present invention provides and test the test signal of system, letter
Number encoding and decoding, signal send and receive reduction and verifying and all process in fpga chip, and also realize half-wave voltage
Automatically adjust, it is ensured that the signal quality simple in construction of output, low cost of manufacture, it is possible to cover complete optic communication test system,
And it is prone to secondary development and upgrading.
3, the present invention proposes temperature, the auto gain control method of voltage dual factors input, it is achieved to crystal half-wave electricity
Compensating in time and adjustment of pressure, it is ensured that the linear amplification that crystal effectively works at crystal is interval, it is achieved can to signal stabilization
The linear amplification leaned on.
4, the present invention utilizes high-precision current, voltage changer, the electric current of receiving terminal is converted into voltage signal, goes forward side by side
The efficient filtering algorithm of row processes, it is achieved that the measuring and calculating of the high accuracy of sensitiveness to light, it is to avoid use expensive photaesthesia meter to enter
Row is measured, it is achieved that low cost, integrated signal processing and measuring and calculating.
5, the present invention is by arranging center processing computer, the signal delivery time of transmitting terminal and the signal of receiving terminal is connect
Quarter in time receiving is acquired and processes, and by offsetting the line delay time of two terminal computers, adds the typical case to device and prolongs
The consideration of time late, it is achieved that the simple measuring and calculating to communication delay；Use the real-time accumulation process of computer, send data and reception
The methods such as comparing, data matrix quickly process, achieve the measuring and calculating to the bit error rate on computers；Use the highest output with
The luminous power measuring and calculating of minimum output, it is achieved the easily-testing to extinction ratio.
Accompanying drawing explanation
By the detailed description non-limiting example made with reference to the following drawings of reading, the further feature of the present invention,
Purpose and advantage will become more apparent upon:
Fig. 1 is the checking of Nd:YAG sunlight pump laser ground communication and the schematic diagram of test system；
Fig. 2 is test signal generation subsystem structure block diagram；
Fig. 3 is half-wave voltage supply and signal driving subsystem structure block diagram；
Fig. 4 is automatic growth control subsystem structure block diagram；
Fig. 5 is test signals revivification modular structure block diagram.
In figure:
1-center processing computer；
2-transmitting terminal computer；
3-tests signal generating module；
The supply of 4-half-wave voltage and signal drive module；
5-gain control unit；
6-light on and off switch；
7-sunlight pump laser；
8-temperature sensing controller；
9-beam splitter；
10-optical antenna transmitting terminal；
11-optical antenna receiving terminal；
12-photodetector；
13-test signals revivification and authentication module；
14-receiving end computer；
15-light power meter.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in the technology of this area
Personnel are further appreciated by the present invention, but limit the present invention the most in any form.It should be pointed out that, the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, it is also possible to make some changes and improvements.These broadly fall into the present invention
Protection domain.
The Nd:YAG sunlight pump laser ground communication performance verification provided according to the present invention and test system, bag
Include: test signal generating module, carrier communication module and test signals revivification and authentication module,
Described test signal generating module, for producing several different test signal, and transmits to carrier communication mould
Block；
Described carrier communication module, for by test signal loading to the carrier wave of laser instrument, being sent out by optical transmitting antenna
It is incident upon transmission space, and transmission is to test signal also after the optical signal that corresponding optical receiver antenna receives is converted into the signal of telecommunication
Former and authentication module；
Described test signals revivification and authentication module, for being amplified the signal of telecommunication received, reduce.
Described test signal generating module includes: signal generator, signal coder and signal amplifier, specifically,
Generate test data file by MATLAB, data file programming is entered in FPGA device, given by corresponding logical operation every
One multi-bit data addition beacon, and generate the test signal of assigned rate, the test signal of generation is at logic coding
Reason, signal transmits to carrier communication module after amplifying.
Described carrier communication module includes: signal modulator, optical transmitting antenna, optical receiver antenna, half-wave voltage increase
Benefit automatic adjustment unit, specifically, by test signal loading to carrier wave laser and by optical transmitting antenna, optical signal is defeated
Go out, and at receiving terminal Application Optics reception antenna receiving optical signal, corresponding optical signalling is carried out opto-electronic conversion, will conversion
After the signal of telecommunication send into test signals revivification with checking district；Wherein, described half-wave voltage Gain Automatic regulation unit is used for basis
The half-wave voltage of laser instrument is automatically adjusted by Output optical power.
Described half-wave voltage Gain Automatic regulation unit includes: temperature sensing controller 8, gain control unit 5；Specifically
Ground, when changing the temperature of laser instrument, gain control unit 5 can be carried out according to the size of Output optical power and the temperature of laser instrument
Feedback, gain control unit 5 is by laser temperature and the Real-time Collection of Output optical power value and send into single-chip microcomputer and setting
Value carry out data process, single-chip microcomputer sends instruction and adjusts the half-wave voltage of laser instrument, thus keeps that Output optical power is stable to exist
Linear interval.
Described test signals revivification includes with authentication module: signal amplifier, fpga chip, specifically, is put by signal
The signal of telecommunication that big device amplifies is tested by fpga chip, the data generated in real time and former test signal is compared and place
Reason, it is achieved the measuring and calculating to communication bit error rates；And utilize NI PXIE board that messaging parameter is tested, it is achieved virtualization instrument
The device checking to communication performance.
Specifically, as it is shown in figure 1, the checking of Nd:YAG sunlight pump laser ground communication and test system are by testing letter
Number the supply of module 3, half-wave voltage and signal is occurred to drive module 4, gain control unit 5, light on and off switch 6 and sunlight
Pump laser 7, a pair optical antenna, three computer compositions.
Specific works process is as follows:
Step 1, is directed at optical transmitting antenna and optical receiver antenna so that optical receiver antenna can stably receive
To the optical signalling of optical transmitting antenna output, arranging Nd:YAG (yag crystal) combinative structure is four crystal connection in series-parallel
Combination, is supplied by independent half-wave voltage and signal drives module supply sunlight pump laser 7 half-wave voltage, and adjusts
The size of whole gain control, makes laser output in stable linear interval；
Step 2: generate Wave data file by transmitting terminal computer 2, and programming enters to test in signal generating module,
Generation time and Wave data file are passed to center processing computer 1 when producing by waveform；
Step 3, sunlight pump laser 7 is generated by modulation and modulates light accordingly, and output is to optical antenna transmitting terminal
10, optical antenna receiving terminal 11 receives optical signal and carries out opto-electronic conversion, and the signal of telecommunication of conversion is amplified, clamped, send
Processing board to NI PCIE signal to process, the data after process pass through receiving end computer 14, by reception time and reception
Data give center processing computer 1；
Step 4, center processing computer 1 is positioned at transmitting terminal computer 1 and the centre position of receiving end computer 14, both
Line propagation time delay can offset, center processing computer passes through comparison transmitting terminal and the moment of receiving terminal record, and adds
The representative value of device latencies time calculates, it is thus achieved that corresponding communication delay result；
Step 5, by test for a long time (test period under every kind of environmental condition is not less than 2 hours), is varied multiple times
The environmental condition (test ambient temperature, experimental enviroment humidity, the visibility etc. of experimental enviroment) of channel, center processing computer 1
Comparison receives data, carries out process and the calculating of data matrix, it is thus achieved that system communication bit error rates system under difficult environmental conditions
Meter result；
Step 6, changes the temperature of sunlight pump laser 7, and gain control unit 5 can be according to the size of Output optical power
Feeding back with the temperature of sunlight pump laser 7, gain control unit 5 is by the temperature to sunlight pump laser 7
Carry out Real-time Collection with the value of Output optical power simultaneously, the value that both data send into single-chip microcomputer and setting is carried out at data
Reason, single-chip microcomputer sends instruction and adjusts the half-wave voltage of sunlight pump laser 7 crystal, thus keeps Output optical power to stablize
Linear interval；
Step 7, changes incoming carrier laser power, adjusts half-wave voltage, and test error rates of data reaches 10-12Time, utilize
Test signals revivification and the high-precision current in authentication module 13, voltage conversion device, after filtering algorithm process, it is thus achieved that high-precision
The output current intensity of degree, the light power meter of recycling optical antenna transmitting terminal 10 obtains Output optical power (twice relation), logical
Cross employing fading channel formula, be calculated the input optical power of optical antenna receiving terminal 11, by lightsensitivity formula S=I/
E (I is output current value, and E is input optical power) can obtain lightsensitivity；
Step 8, changes the data waveform file of input so that the data waveform of certain test phase is all 1, another one
The data waveform stage is all 0, controls the bit error rate and is not more than 10-12, the input light merit of twice is obtained by the test method of step 7
Rate, obtains the extinction ratio of system and the extinction ratio test result of crystal.
Further, in the present invention, the combination of four Nd:YAG connection in series-parallel (connecting two-by-two more in parallel), effectively reduces
The supply pressure of system half-wave voltage, simultaneously because half-wave voltage reduces, also can effectively reduce temperature during crystal work, reduce
The self-regulation frequency of automatic gain system, effectively raises the stability of system.
The present invention proposes temperature, the auto gain control method of voltage dual factors input, it is achieved to crystal half-wave voltage
Compensate in time and adjust, it is ensured that the linear amplification that crystal effectively works at crystal is interval, it is achieved reliable to signal stabilization
Linear amplification.
The present invention utilizes portable computer and the signal processing support plate based on fpga chip, carries out integrated, modularity
Signal processing, be efficiently completed the real-time process arbitrarily generating and receiving signal sending signal, meanwhile, signal processing carries
Secondary development supported by plate, it is simple to the upgrading of system.
Utilize high-precision current, voltage changer, the electric current of receiving terminal is converted into voltage signal, and carries out efficient
Filtering algorithm processes, it is achieved that the high accuracy measuring and calculating of sensitiveness to light, present invention, avoiding and uses expensive photaesthesia meter to carry out
Measure, it is achieved that low cost, integrated signal processing and measuring and calculating.By arranging center processing computer, by the letter of transmitting terminal
The signal of number delivery time and receiving terminal is acquired and processes the time of reception, prolongs by offsetting the circuit of two terminal computers
Time late, add the consideration of the typical delay time to device, it is achieved that the simple measuring and calculating to communication delay；Employing computer is real
Time accumulation process, send data and receive the method such as comparing, data matrix quickly process, achieve on computers by mistake
The measuring and calculating of code check；Use the luminous power measuring and calculating of the highest output and minimum output, it is achieved the easily-testing to extinction ratio.
Whole system is designed with modularity, Integration Design, and is connected to computer by PCIE board, it is achieved virtual
Instrument is to the Real-time Collection of data and test, it is achieved that low cost, high efficiency, all standing test.
One skilled in the art will appreciate that except realizing, in pure computer readable program code mode, the system that the present invention provides
And beyond each device, completely can by method step is carried out system that programming in logic makes the present invention provide and
Each device is with the form of gate, switch, special IC, programmable logic controller (PLC) and embedded microcontroller etc.
Realize identical function.So, system and every device thereof that the present invention provides are considered a kind of hardware component, and right
Include in it can also be considered as the structure in hardware component for the device realizing various function；Can also realize being used for respectively
The device of kind of function is considered as not only being the software module of implementation method but also can be the structure in hardware component.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make a variety of changes within the scope of the claims or revise, this not shadow
Ring the flesh and blood of the present invention.In the case of not conflicting, the feature in embodiments herein and embodiment can any phase
Combination mutually.
Claims (7)
1. a sunlight pump laser ground communication performance verification and test system, it is characterised in that include testing signal
There is module, carrier communication module and test signals revivification and authentication module,
Described test signal generating module, for producing several different test signal, and transmits to carrier communication module；
Described carrier communication module, for by test signal loading in the carrier wave of laser instrument, by optical transmitting antenna launch to
Transmission space, and the optical signal that corresponding optical receiver antenna receives is converted into after the signal of telecommunication transmission to test signals revivification with
Authentication module；
Described test signals revivification and authentication module, for being amplified the signal of telecommunication received, reduce.
Sunlight pump laser ground communication performance verification and test system the most according to claim 1, it is characterised in that
Described test signal generating module includes: signal generator, signal coder and signal amplifier, specifically, passes through
MATLAB generates test data file, enters in FPGA device by data file programming, gives each by corresponding logical operation
Multi-bit data addition beacon, and generate the test signal of assigned rate, the test signal of generation processes through logic coding, letter
Number amplify after transmit to carrier communication module.
Sunlight pump laser ground communication performance verification the most according to claim 1 and test system, its feature exists
In, described carrier communication module includes: signal modulator, optical transmitting antenna, optical receiver antenna, half-wave voltage are Gain Automatic
Regulation unit, specifically, will test signal loading in carrier wave laser, and by optical transmitting antenna, optical signal is exported, and
At receiving terminal Application Optics reception antenna receiving optical signal, corresponding optical signalling is carried out opto-electronic conversion, after conversion
The signal of telecommunication sends into test signals revivification and checking district；Wherein, described half-wave voltage Gain Automatic regulation unit is for according to output
The half-wave voltage of laser instrument is automatically adjusted by luminous power.
Sunlight pump laser ground communication performance verification the most according to claim 3 and test system, its feature exists
In, described half-wave voltage Gain Automatic regulation unit includes: temperature sensing controller (8), gain control unit (5)；Specifically,
When changing the temperature of laser instrument, gain control unit (5) carries out Real-time Collection also to laser temperature and Output optical power value
The value set in sending into single-chip microcomputer, with single-chip microcomputer carries out data process, and described single-chip microcomputer sends instruction and adjusts the half-wave of laser instrument
Voltage.
Sunlight pump laser ground communication performance verification the most according to claim 1 and test system, its feature exists
In, described test signals revivification includes with authentication module: signal amplifier, fpga chip, specifically, is tested by fpga chip
The signal of telecommunication that signal amplifier amplifies, when being tested by fpga chip, the data of generation and former test signal are compared and process,
Realize the measuring and calculating to communication bit error rates；And utilize NI PXIE board that messaging parameter is tested, it is achieved virtualization instrument pair
The checking of communication performance.
Sunlight pump laser ground communication performance verification the most according to claim 1 and test system, its feature exists
In, described sunlight pump laser is Nd:YAG solar-pumped laser instrument, and Nd:YAG is also known as yag crystal, and comprises
The crystal of four connection in series-parallel combinations, each crystal is supplied by independent half-wave voltage and signal drives module supply half-wave electricity
Pressure.
Sunlight pump laser ground communication performance verification the most according to claim 5 and test system, its feature exists
In, described test signals revivification also includes with authentication module: transmitting terminal computer (2), center processing computer (1), receiving terminal
Computer (14), described transmitting terminal computer (2) record test signal generating module sends the moment of signal, described receiving terminal meter
Calculation machine (14) record test signals revivification module receives the moment of the signal of telecommunication；Described center processing computer (1) is arranged on to be sent out
Penetrate between end computer (2) and receiving end computer (14) the two terminal computer, by offsetting two terminal computers
Line delay time, and consider the time delay of disparate modules, it is achieved that the simple measuring and calculating to communication delay.
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| CN201610666940.3A CN106330301A (en) | 2016-08-12 | 2016-08-12 | Ground communication performance verification and test system of solar pumped laser |
Applications Claiming Priority (1)
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| CN201610666940.3A CN106330301A (en) | 2016-08-12 | 2016-08-12 | Ground communication performance verification and test system of solar pumped laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113375716A (en) * | 2021-06-01 | 2021-09-10 | 国网重庆市电力公司电力科学研究院 | Self-powered power transmission line on-line monitoring system based on multi-sensor data fusion |
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Application publication date: 20170111 |