CN103197307A - System and method of high-precision distance measurement verification - Google Patents
System and method of high-precision distance measurement verification Download PDFInfo
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- CN103197307A CN103197307A CN2013100625427A CN201310062542A CN103197307A CN 103197307 A CN103197307 A CN 103197307A CN 2013100625427 A CN2013100625427 A CN 2013100625427A CN 201310062542 A CN201310062542 A CN 201310062542A CN 103197307 A CN103197307 A CN 103197307A
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Abstract
The invention discloses a system and a method of high-precision distance measurement verification. The system of the high-precision distance measurement verification comprises an optical part and a translation platform. The optical part comprises a laser device, an electrooptic modulator, a light-intensity amplifier, an electrooptic demodulator and optical fibers used for connecting all components, and is used for simulating a space long distance. The translation platform comprises a controller, a movable platform, a fixed platform, a screw rod, a transmitting antenna and a receiving antenna, wherein the transmitting antenna and the receiving antenna are respectively arranged on the movable platform and the fixed platform, and the translation platform is used for achieving the adjustment of a space accurate distance. The system and the method of the high-precision distance measurement verification obtains the stability degree of a distance measuring system by adjusting the distance between the movable platform and the fixed platform, and the transmitting distances before and after sampling moving, and calculating the mean square error of sampling data, and obtains the distance measuring precision of the distance measuring system by comparing the average values of the sampling data, and comparing the average values with the actual moving distance of the movable platform. The system and the method of the high-precision distance measurement verification fully utilize the superiority of optical fiber communication, simulate the spatial distance of hundreds of kilometers, shield the interference of external environment, and effectively verify the stability degree and the precision of the distance measuring system.
Description
Technical field
The present invention relates to range finding field between optical fiber communication and star, relate in particular to a kind of precision distance measurement verification system and method.
Background technology
At present, in aircraft observing and controlling, range finding occupies an important position, because no matter be AEROSPACE APPLICATION such as deep space flight, guided missile tracking, or satellite orbit determination, all be unable to do without the measurement of distance.The range finding system is the low crucial useful load of defending the tracking Gravity Satellite between high precision star, by handling high-precision interstellar distance and range rate data, can recover earth gravity field.The accurate measurement of earth gravity field is extremely important to subject development such as geodetic surveying, geophysics, geodynamics and thalassography.The GRACE that in March, 2002, the dolantin cooperation succeeded in sending up (Gravity Recovery And Climate Experiment) satellite, its most crucial useful load is high precision K band microwave range measurement system, distance accuracy is better than 10um, rate accuracy can reach 1um/s, can measure the variation of the unusual caused intersatellite spacing of earth surface gravity field.Along with the moonlet continuous advancement in technology, the moonlet net plays more and more important effect in fields such as communication, remote sensing and navigation, range finding is the important leverage of skin satellites formation between star, and it is the prerequisite that guarantees the satellite network operate as normal that moonlet itself is carried out hi-Fix.
Range measurement system commonly used now comprises carrier wave range finding and pseudo-random code ranging, and the carrier wave range finding is to find range by the phase differential of the carrier wave that calculates the local carrier wave that sends and reception, and the phase changing capacity according to distance measuring signal sends and receives calculates transmission range.And pseudo-random code ranging is to calculate transmission range according to the time-delay that distance measuring signal sends and receives.
As seen, the distant-range high-precision range measurement system has seemed more and more important in the military and space field, and precision height of the final needs of the research of these range measurement systems, the distance that length is long are verified and calibrated.But for most institute, being difficult to find the space length of an open dozens or even hundreds of kilometer, if require this space length to be accurate to micron order, is impossible realize basically.
Summary of the invention
The purpose of this invention is to provide a kind of precision distance measurement verification system and method, by the space length of the high distance of simulation precision, verify the range finding degree of stability of range measurement system, further can also verify the distance accuracy of range measurement system.
A kind of precision distance measurement verification system, described range measurement system comprises that distance measuring signal produces circuit and distance measuring signal treatment circuit, described verification system comprises opticator, described opticator comprises the laser instrument that links to each other successively, electrooptic modulator and photoelectricity detuner, and the optical fiber that connects each device, the range finding that is used for the analogue ranging system is remote; Described electrooptic modulator produces circuit with distance measuring signal and links to each other, and is used for distance measuring signal is modulated to laser; Described photoelectricity detuner links to each other with the distance measuring signal treatment circuit, is used for calculating distance measuring signal transmission range and output.
When being used for checking distance measuring equipment degree of stability, the distance between the signal receiving end of the signal sending end of photoelectricity detuner and distance measuring signal treatment circuit does not need to change, and therefore extra motion needn't be set.Only the distance between the signal receiving end of the signal sending end that distance measuring equipment is carried out precision test time electrical demodulator and distance measuring signal treatment circuit just need change, and when the time comes translation stage can be set as required.
Signal transmission, commonly used is wireless and wired dual mode, both can adopt wired connection also can adopt wireless connections between the signal receiving end of the signal sending end of photoelectricity detuner and distance measuring signal treatment circuit certainly.
As preferably, also be provided with translation stage, described translation stage comprises transmitting antenna and receiving antenna, distance is accurately adjustable between described transmitting antenna and the receiving antenna; The output terminal of described photoelectricity detuner links to each other with the transmitting antenna of translation stage, and described distance measuring signal treatment circuit links to each other with the receiving antenna of translation stage, is used for calculating distance measuring signal transmission range and output.
Described electrooptic modulator is connected with dc bias circuit, and by regulating the distorted signals minimum after dc offset voltage makes modulation, gain is maximum.Electrooptic modulator has adopted intensity modulator, and this modulator is based on the waveguide type electrolyte optical modulation device that Mach Ceng Degan relates to principle, and by regulating the distorted signals minimum after dc offset voltage can make modulation, gain is maximum.
Be provided with the light intensity amplifier between described electrooptic modulator and the photoelectricity detuner, be used for amplifying luminous power.The light intensity amplifier has adopted EDFA, has characteristics such as gain height, power height at the 1550nm place.
Described translation stage also comprises transfer table and stiff end, and the guide rail that connects transfer table and stiff end, and described transmitting antenna and receiving antenna are separately positioned on transfer table and the stiff end.Described translation stage also comprises controller, and it is mobile at guide rail to be used for the control transfer table, and the accurate distance between transfer table and the stiff end is set.This translation stage absolute fix precision can reach 5 μ m, and repetitive positioning accuracy can reach 2 μ m, can accurately locate the spacing between transmitting antenna and receiving antenna, thereby determines the precision of range measurement system.
The invention allows for a kind of precision distance measurement verification method, comprise step:
(1), distance measuring signal is modulated on the laser, after Optical Fiber Transmission, demodulate distance measuring signal;
(2), the distance measuring signal that demodulates is transferred to the distance measuring signal treatment circuit, the distance of processing output distance measuring signal transmission;
(3) distance of transmitting according to regular time interval sampling output distance measuring signal in official hour, the mean value of calculating sampling data and mean square deviation are with the degree of stability of described mean square deviation as described distance measuring equipment.
The invention allows for a kind of precision distance measurement verification method, be used for degree of stability and the distance accuracy of checking range measurement system, comprise step:
(1), distance measuring signal is modulated on the laser, after Optical Fiber Transmission, demodulate distance measuring signal;
(2), the distance measuring signal that demodulates is sent by transmitting antenna, through receiving by receiving antenna after one section distance of accurately setting;
(3) handle the distance that the output distance measuring signal transmits to received signal;
(4) in official hour according to the distance of the distance measuring signal transmission of regular time interval sampling output, the mean value of calculating sampling data and mean square deviation are with the degree of stability of described mean square deviation as described range measurement system;
(5) distance between adjustment transmitting antenna and receiving antenna, repeating step (3), (4);
(6) the mean value difference of twice measurement result of calculating compares with transmitting antenna and receiving antenna adjustment distance, draws the distance accuracy of range measurement system.
Stipulated time described in the present invention is interior according to Fixed Time Interval, usually Fixed Time Interval can be set to 0.1-1 second, the data of gathering some get final product, accuracy for data, usually sampled data is proper 300-2000 the left and right sides, and official hour can be set according to sampling data needed.
Described optical fiber is remote for the range finding of analogue ranging system, by inserting the light intensity amplifier luminous power is amplified, to reach the requirement of transmission range.Because optical fiber can coil, realize that therefore the above transmission range ratio of 100Km is easier to, and in order to guarantee remote transmission, adds the transmission range that the light intensity amplifier can effectively prolong light in less space.
Described transmitting antenna and receiving antenna are arranged on the translation stage, and described translation stage comprises transfer table and stiff end, and the guide rail that connects transfer table and stiff end, and described transmitting antenna and receiving antenna are separately positioned on transfer table and the stiff end.Described translation stage also comprises controller, is used for the mobile at guide rail of control transfer table, and the accurate distance between transfer table and the stiff end is set.
This optical system accurately virtual space is remote, is a kind of convenience and highly effective telemeasurement verification mode, for accurate range measurement system provides a kind of convenient verification platform accurately.Can be applied to fields such as space flight, exact instrument manufacturing, high-accuracy position system, road traffic measurement, resource exploration well.At present, this system has obtained checking in satellite ranging two big main range measurement systems (carrier wave range finding and pseudo-random code ranging), can also well be used at other field after believing.
Description of drawings
Fig. 1 is that whole precision distance measurement system verification platform connects block diagram;
Fig. 2 is verification system opticator johning knot composition of the present invention;
Fig. 3 is verification system translation stage structural drawing of the present invention;
Fig. 4 is the connection block diagram of verification platform in the carrier wave range measurement system;
Fig. 5 is the checking result of carrier wave range measurement system in this optical system;
Fig. 6 is the connection block diagram of verification platform in the pseudo-random code ranging system;
Fig. 7 is the checking result of pseudo-random code ranging system in this optical system.
Embodiment
Below in conjunction with drawings and Examples technical solution of the present invention is described in further details, following examples do not constitute limitation of the invention.
Precision distance measurement verification system of the present invention is connected as shown in Figure 1 with the range measurement system that will verify, wherein range measurement system comprises that distance measuring signal produces circuit and distance measuring signal treatment circuit, verification system comprises opticator and translation stage, wherein opticator comprises laser instrument, electrooptic modulator, light intensity amplifier, photoelectricity detuner, and the optical fiber that connects each device, it is remote to be used for virtual space; And translation stage comprises controller, transfer table, and fixed station and screw rod, and the transmitting antenna and the receiving antenna that are installed in transfer table and fixed station respectively are used for the adjusting of implementation space accurate distance.
The output terminal of laser instrument is connected with the optics input end of electrooptic modulator by optical fiber, two other electricity input port of electrooptic modulator connects dc offset voltage respectively and distance measuring signal produces the distance measuring signal that circuit provides, the output terminal of electrooptic modulator is connected with the light intensity amplifier input terminal by optical fiber, the output terminal of light intensity amplifier links to each other by the input end of optical fiber with the photoelectricity detuner, the output terminal of photoelectricity detuner links to each other with translation stage, and translation stage output links to each other with the input end of signal processing circuit.
Distance measuring signal produces circuit distance measuring signal is imported electrooptic modulator, and electrooptic modulator is modulated to distance measuring signal on the laser, and transmission and the light intensity amplifier of process optical fiber amplify luminous power, demodulate distance measuring signal by the photoelectricity detuner again.
The transmitting antenna that the distance measuring signal that demodulates inserts translation stage sends, the receiving antenna of translation stage receives distance measuring signal, distance between this transmitting antenna and receiving antenna can accurately be regulated by controller, send into the transmission range that the distance measuring signal treatment circuit calculates distance measuring signal, namely the delivery outlet of distance measuring signal transmitter is to the distance of the entrance of distance measuring signal treatment circuit.
The transmission range of supposing distance measuring signal is D, but the transfer table of translation stage and the spacing between the fixed station are L, the constant spacing of being made up of optical fiber, radio-frequency cable and optical instrument in the verification platform is S, then transmission range D equal adjustable distance L and constant spacing S and.
Two indexs of main emphasis in range measurement system: degree of stability and precision, degree of stability are the mean square deviation of measuring distance, and precision is the absolute error of measuring distance.Below just the degree of stability of verification platform checking range measurement system of the present invention and the principle of work of precision are specifically described.
At first, translation stage maintains static, and verification platform of the present invention is inserted range measurement system, distance measuring signal through mixing in signal processing circuit behind the verification platform, sample and calculate transmission range D, and with transmission range value of every 0.1s output, calculate mean square deviation and the mean value of output data.
When translation stage maintains static, can be understood as does not have translation stage yet, this moment is not if adopt transmitting antenna and receiving antenna can adopt wired mode to be connected yet, in segment length image data in the time, the mean square deviation of trying to achieve is the degree of stability of this range measurement system, mean value namely for this reason the actual value of linkage length note make D''.
Then, regulate the spacing L of translation stage transfer table and stiff end, setting displacement is L', repeat above-mentioned step again, calculate mean square deviation and the mean value D' of the data of gathering, the amount of movement L''=D'-D'' of translation stage then, calculate L'' with the difference of actual amount of movement L': Δ L=L'-L'', this difference is the distance accuracy of this range measurement system.
Particularly, opticator device syndeton of the present invention as shown in Figure 2, what laser instrument was selected for use is distributed feedback laser, in long distance, jumbo optical fiber telecommunications system, distributed feedback laser can reduce the influence of chromatic dispersion, make laser works under the single longitudinal mode state, to reduce spectral width.Laser wavelength is 1550nm, 1550nm wavelength place, and the attenuation coefficient minimum of optical fiber, its representative value is, at 1310nm wavelength, 0.3～0.4dB/Km; At 1550nm wavelength, 0.15～0.25dB/Km.And fiber amplifier EDFA(Erbium-Doped Fiber Amplifier (EDFA)) operation wavelength is 1550nm.
G.653(DSF optical fiber adopted) dispersion shifted optical fiber, dispersion shifted optical fiber is zero in the chromatic dispersion of 1550nm place, this optical fiber is unfavorable for multi channel WDM transmission, with the number of channel more for a long time, channel separation reduces, and four-wave mixing takes place easily, causes interchannel to be crosstalked.Because the channel of optical fiber is 1 in the verification system of the present invention, so four-wave mixing can not occur, and to make the chromatic dispersion of carrier signal be zero, pulse stretcher and the distorted signals of having avoided the chromatic dispersion owing to laser to cause.In addition, dispersion shifted optical fiber is single-mode fiber because light propagates the total reflection principle that is based on light in optical fiber, so light in optical fiber not along rectilinear propagation.Only propagate with a kind of pattern (basic mode) in the single-mode fiber, and higher mode all is cut off, there is not modal dispersion, basic mode is the light that is parallel to optical axis rectilinear propagation, propagate with linear fashion so the propagation trajectories of light in single-mode fiber is the form that is parallel to shaft axis of optic fibre, namely the length of optical fiber has represented the distance of laser actual propagation.
Electrooptic modulator has adopted intensity modulator, and this modulator is based on the waveguide type electrolyte optical modulation device that Mach Ceng Degan relates to principle.Modulation system belongs to indirect modulation, be that output channel at light source adds modulator light wave is modulated, be to utilize the crystal transport property to realize modulation to light wave with change in voltage, this modulation system can improve modulation rate at least an order of magnitude and can not influence the steady operation of light source.Intensity modulated refers to the power of laser along with the proportional example of the changes in amplitude of modulation signal changes, and optical receiver generally all is directly to respond the intensity variation that it receives, so this modulation system is conducive to the direct detection of receiver.This modulator is that input light is divided into two light branch roads that the equal signal of two-way enters modulator respectively, the material that these two light branch roads adopt is the electric light material, it is its refractive index electric signal size that can apply along with the outside and changing, because the variations in refractive index of light branch road will cause the variation of signal phase, so the signal of two branch roads the output terminal of modulator again in conjunction with the time, synthetic light signal is the interference signal of an intensity size variation.By this way, the information translation of electric signal has been arrived on the light signal, realized light intensity modulation.
The light intensity amplifier has adopted EDFA, has characteristics such as gain height, power height at the 1550nm place.In main line or remote optical fiber communication, light signal need be grown Distance Transmission, owing to be subjected to optical transmitter output power, photoreceiver receiving sensitivity, the restriction of the attenuation of optical fiber transmission line and bandwidth (or chromatic dispersion), the maximum transmission distance between optical transmitter and the photoreceiver is limited.If transmission range surpasses this limit, signal transmission quality will descend, even interrupts; In order to extend transmission distance, guarantee signal transmission quality again, must as yet not before the deterioration, just handle at the transmission signal, after the processing, continue transmission again.
The photoelectricity detuner adopts direct detection, the modulated lightwave signal that transmission comes from optical fiber incides on the photosurface of photoelectric seismometer, photoelectric seismometer is demodulated to electric signal with light signal, carry out the big processing of tele-release then, be reduced into original signal, because the light signal of optical fiber output is very faint, so in order effectively light signal to be converted into electric signal, require photoelectric seismometer that high responsiveness, low noise, fast response speed are arranged.In actual applications, photoelectric detector has two types, and a kind of is PIN photodiode (PIN-PD); Another kind is avalanche photo diode (APD).PIN photodiode is mainly used in the optical fiber telecommunications system of short distance, low capacity; APD is mainly used in long distance, the jumbo optical fiber telecommunications system.Because in long-distance optical fiber telecommunications system, the luminous power of the milliwatt order of magnitude is only arranged after optical sender output, through tens km optical fiber attenuations, the light signal that arrives the photoreceiver place will become very faint, if employing PIN photodiode, then Shu Chu photocurrent several peaces of receiving only.In order to make the decision circuit operate as normal of digital optical receiver, just need to adopt multistage amplification.But can introduce noise when amplifying, thereby the sensitivity of photoreceiver is descended.Avalanche photodide amplified in photodiode inside earlier before electric signal enters amplifier, had overcome the above-mentioned shortcoming of PIN photodiode.Adopted Schottky-barrier avalanche photodiode in the native system, responsiveness is 0.6A/W, and the response time is 18.5ps, has good detection performance.
Particularly, translation stage comprises controller, transfer table, and fixed station and screw rod as shown in Figure 3, also comprise transmitting antenna and receiving antenna, and one is installed in transfer table, and another is installed in fixed station; Transfer table is installed on the screw rod, moves horizontally along screw rod.Translation stage has used precision stepper motor transmission controlled motion guide rail linear mobile, and its controller is PC, and by the stepping mark of serial communication port control motor, the antenna that drive rail has driven on transfer table and the transfer table moves.The movement of whole platform is controlled by PC, thereby has avoided multipath effect that the inaccurate of artificial mobile platform and walking about cause to the interference of measurement result.The moving range of transfer table on guide rail can reach 500mm, and the absolute fix precision can reach 5 μ m, and repetitive positioning accuracy can reach 2 μ m, and maximal rate can reach 60mm/s.The range measurements of translation stage multiply by transmission ratios by measurement stepper motor motion revolution and obtains, with the accuracy of checking carrier wave measurement.Can add a dielectric-slab between two antennas, bigger decay is provided, to avoid near-field effect that antenna distance excessively closely causes to the influence of measurement result.Translation stage adopts the screw rod of step motor control to realize that stepper motor is connected by high-quality elastic coupling with ball screw, and depolarized performance is good.
Controller can independently be controlled multiple model stepper motor and digital servomotor, control is 4 at most, pulse output speed up to 10M, encoder feedback speed up to 10M, satisfy the full accuracy requirement, parameters such as initial velocity, constant speedpump, acceleration, move distance can be set each respectively.
The repetitive positioning accuracy of translation stage and absolute fix precision height, repetitive positioning accuracy can reach 2 μ m, and the absolute fix precision can reach 5 μ m, and the moving range of transfer table on guide rail can reach 500mm, maximal rate can reach 60mm/sec, is particularly suitable for back and forth using at a high speed.
Embodiment 1
By verification platform checking carrier wave range measurement system of the present invention, as shown in Figure 4.The carrier wave range measurement system is imported electrooptic modulator by the carrier transmit machine with distance measuring signal with distance measuring signal, and distance measuring signal calculates the distance of range finding through behind the verification platform through the distance calculation module of range measurement system.
The carrier wave range finding is to find range by the phase differential of the carrier wave that calculates the local carrier wave that sends and reception, supposes that the initial phase of the local high-frequency carrier signal that produces is Φ
0, after the verification platform transmission, phase place has certain delay, and establishing from the carrier signal phase of this verification platform output is Φ
1(Φ
1The size of value changes along with distance between fiber lengths and translation stage two), so carrier wave through this verification platform during this period of time in, the phase changing capacity ΔΦ=Φ of signal
1-Φ
0, according to the phase changing capacity of signal, the distance measuring signal treatment circuit calculates transmission range D, and then calculates degree of stability and the distance accuracy of range measurement system.
The refractive index of the length of optical fiber and optical fiber can change along with the change of conditions such as ambient temperature and stress in the experimentation, therefore when using this platform validation precision distance measurement system, guarantee that these external conditions are constant.
As shown in Figure 5, be the checking result of carrier wave range measurement system, by distance measuring signal treatment circuit carrier track, mixing, sampling, draw distance value than phase, filtering.1500 distance values have been gathered in the present embodiment test, add up and calculate the mean square deviation of these 1500 distance values, and the range finding degree of stability that draws this carrier wave range measurement system is 46.6 μ m.The measuring principle of distance accuracy is with the measurement of degree of stability, different is when measuring distance accuracy, need mobile translation stage, by changing the phase delay that translation stage changes distance measuring signal, calculate the displacement of translation stage by the phase difference value that obtains, the distance accuracy that the displacement value calculated and actual displacement value relatively are range measurement system.
Embodiment 2
By verification platform of the present invention checking pseudo-random code ranging system, as shown in Figure 6, be the range measurement principle of pseudo-random code ranging system and with the connection layout of this range finding verification platform, its connected mode is similar with the connected mode in the carrier wave range measurement system.Different with the carrier wave range finding is that the carrier wave of pseudo-random code ranging system is carry distance information not, but be modulated at the pseudo-code sequence carry distance information on the carrier wave.Therefore, generating end at local distance measuring signal needs the pseudo-code sequence maker and pseudo-code sequence need be modulated to send to back end link on the high frequency carrier again.Range finding also has different the extraction of the amount of delay of pseudo-random code ranging with carrier wave in addition, native system has been taked directly related method, the distance measuring signal that is about to receive carries out correlation computations with local subcode respectively, for the subcode except the clock sign indicating number, by the relevant chip offset that can obtain this subcode correspondence, the relevant combination with the clock sign indicating number of chip offset obtains The ultimate results.Wherein, the displacement of the length of optical fiber and translation stage can have influence on the amount of delay Δ t of distance measuring signal in this verification platform, and the distance measuring signal treatment circuit calculates transmission range by Δ t, thereby verifies stability and the distance accuracy of pseudo-random code ranging system.
Be the checking result of pseudo-random code ranging system as Fig. 7, ordinate unit is m, and, filtering relevant by distance measuring signal treatment circuit carrier track, mixing, sampling, code element draws delay value.By gathering 1500 delay values, add up and calculate the mean square deviation T of these 1500 points, the range finding degree of stability that obtains this pseudo-random code ranging system by T * C' is 2.97cm then.This optical system has really realized the space length simulation of distant-range high-precision, has fundamentally solved in the range measurement system the demand of space length, has shortened range measurement system research cycle widely, and has improved distance measuring precision to a great extent.
Above embodiment is only in order to technical scheme of the present invention to be described but not limit it; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (10)
1. precision distance measurement verification system, described range measurement system comprises that distance measuring signal produces circuit and distance measuring signal treatment circuit, it is characterized in that, described verification system comprises opticator, described opticator comprises the laser instrument that links to each other successively, electrooptic modulator and photoelectricity detuner, and the optical fiber that connects each device, the range finding that is used for the analogue ranging system is remote; Described electrooptic modulator produces circuit with distance measuring signal and links to each other, and is used for distance measuring signal is modulated to laser; Described photoelectricity detuner links to each other with the distance measuring signal treatment circuit, is used for calculating distance measuring signal transmission range and output.
2. precision distance measurement verification system as claimed in claim 1 is characterized in that, also is provided with translation stage, and described translation stage comprises transmitting antenna and receiving antenna, and distance is accurately adjustable between described transmitting antenna and the receiving antenna; The output terminal of described photoelectricity detuner links to each other with the transmitting antenna of translation stage, and described distance measuring signal treatment circuit links to each other with the receiving antenna of translation stage, is used for calculating distance measuring signal transmission range and output.
3. verification system as claimed in claim 1 is characterized in that, described electrooptic modulator is connected with dc bias circuit, and by regulating the distorted signals minimum after dc offset voltage makes modulation, gain is maximum.
4. verification system as claimed in claim 1 is characterized in that, is provided with the light intensity amplifier between described electrooptic modulator and the photoelectricity detuner, is used for amplifying luminous power.
5. verification system as claimed in claim 1 is characterized in that, described translation stage also comprises transfer table and stiff end, and the guide rail that connects transfer table and stiff end, and described transmitting antenna and receiving antenna are separately positioned on transfer table and the stiff end.
6. verification system as claimed in claim 5 is characterized in that, described translation stage also comprises controller, and it is mobile at guide rail to be used for the control transfer table, and the accurate distance between transfer table and the stiff end is set.
7. a precision distance measurement verification method is characterized in that, comprises step:
(1), distance measuring signal is modulated on the laser, after Optical Fiber Transmission, demodulate distance measuring signal;
(2), the distance measuring signal that demodulates is transferred to the distance measuring signal treatment circuit, the distance of processing output distance measuring signal transmission;
(3) distance of transmitting according to regular time interval sampling output distance measuring signal in official hour, the mean value of calculating sampling data and mean square deviation are with the degree of stability of described mean square deviation as described distance measuring equipment.
8. precision distance measurement verification method is used for degree of stability and the distance accuracy of checking range measurement system, it is characterized in that, comprises step:
(1), distance measuring signal is modulated on the laser, after Optical Fiber Transmission, demodulate distance measuring signal;
(2), the distance measuring signal that demodulates is sent by transmitting antenna, through receiving by receiving antenna after one section distance of accurately setting;
(3) handle the distance that the output distance measuring signal transmits to received signal;
(4) in official hour according to the distance of the distance measuring signal transmission of regular time interval sampling output, the mean value of calculating sampling data and mean square deviation are with the degree of stability of described mean square deviation as described range measurement system;
(5) distance between adjustment transmitting antenna and receiving antenna, repeating step (3), (4);
(6) the mean value difference of twice measurement result of calculating compares with transmitting antenna and receiving antenna adjustment distance, draws the distance accuracy of range measurement system.
9. as claim 7 or 8 described verification methods, it is characterized in that described optical fiber is remote for the range finding of analogue ranging system, by inserting the light intensity amplifier luminous power is amplified, to reach the requirement of transmission range.
10. verification method as claimed in claim 8, it is characterized in that, described transmitting antenna and receiving antenna are arranged on the translation stage, described translation stage comprises transfer table and stiff end, and the guide rail that connects transfer table and stiff end, described transmitting antenna and receiving antenna are separately positioned on transfer table and the stiff end; Described translation stage also comprises controller, is used for the mobile at guide rail of control transfer table, and the accurate distance between transfer table and the stiff end is set.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680960A (en) * | 2012-05-10 | 2012-09-19 | 浙江大学 | High-precision ranging and verifying system and method |
| CN102680981A (en) * | 2012-05-29 | 2012-09-19 | 浙江大学 | Distance measurement method and device based on orthogonal locking of microwave photon signals |
-
2012
- 2012-08-03 CN CN2012102742558A patent/CN102778678A/en active Pending
-
2013
- 2013-02-28 CN CN2013100625427A patent/CN103197307A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680960A (en) * | 2012-05-10 | 2012-09-19 | 浙江大学 | High-precision ranging and verifying system and method |
| CN102680981A (en) * | 2012-05-29 | 2012-09-19 | 浙江大学 | Distance measurement method and device based on orthogonal locking of microwave photon signals |
Cited By (7)
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|---|---|---|---|---|
| CN108375777A (en) * | 2017-12-28 | 2018-08-07 | 北京东方计量测试研究所 | A kind of optical delay calibration method and system for range-measurement system |
| CN112444801A (en) * | 2019-09-05 | 2021-03-05 | 株式会社东芝 | Distance measuring device |
| CN112444801B (en) * | 2019-09-05 | 2024-02-06 | 株式会社东芝 | Distance measuring device |
| CN110806573A (en) * | 2019-12-13 | 2020-02-18 | 中国科学院长春光学精密机械与物理研究所 | Indoor distance measurement precision real-time measurement device for laser distance measuring machine |
| CN112578391A (en) * | 2020-11-03 | 2021-03-30 | 上海航天控制技术研究所 | Ground verification system and method of high-precision inter-satellite ranging system |
| CN112578391B (en) * | 2020-11-03 | 2022-08-02 | 上海航天控制技术研究所 | Ground verification system and method of high-precision inter-satellite ranging system |
| CN114089161A (en) * | 2021-11-19 | 2022-02-25 | 浙江大学 | Automatic fault injection system and method based on Zynq chip |
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