CN206133012U - Research, early warning platform of navigation signal are disturbed to sun radio burst - Google Patents
Research, early warning platform of navigation signal are disturbed to sun radio burst Download PDFInfo
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Abstract
The utility model discloses a research, early warning platform of navigation signal are disturbed to sun radio burst, it includes sun radio flow monitoring portion, navigation satellite signal monitoring portion, computer, does wherein sun radio flow monitoring portion include antenna for radio astronomy, analog receiver system, calibration system, 3 above power voltage converter, data collection station, navigation satellite signal monitoring portion includes navigation antenna, navigation signal reception machine, wherein sun radio flow monitoring portion realizes calibrating the accurate of multichannel sun radio flow through in real time to the switching between monitoring of sun radio flow and the noise source switch to judge the sun radio burst incident that whether takes place, the portion of navigation satellite signal monitoring simultaneously is used for information such as the current signal quality of real -time recording, and sun radio flow data combines navigation signal qualitative data, judges the influence condition of radio burst to the signal quality.
Description
Technical field
This utility model belongs to satellite navigation measurement and control area, and in particular to one kind is for solar radio burst interference navigation letter
Number research, early warning platform, it is applied to early warning solar radio burst interference navigational communications field.
Background technology
The sun is that, apart from the nearest fixed star of the earth, while earth light and heat is passed to, its activity is also in all fields
Affect production, the life of the mankind, and the higher and higher technical system of mankind's interdependency.
The mankind rely primarily at present radio wave to enter the communication of planet ground-air, and frequency range is from several MHz up to tens of GHz.
In the world widely used global navigation satellite system (GPS, GLONASS, Big Dipper etc.), is set by multi-satellite for ground
It is standby that the service such as positioning, time service is provided, play huge effect in fields such as military affairs, scientific investigation, the probings of marine oil gas field.Navigation is defended
Typically only more than ten watts to tens watts or so of the transmission power of star, the frequency range for being used, typically in L and S frequency ranges.When navigation electric wave
When reaching ground, the signal power for receiving only about -130dBm or so, its intensity is very faint, therefore, connecing on ground
The collection of letters number is highly susceptible to an interference for surrounding.Exclude outside artificial premeditated interference, the master of navigation satellite signal in nature
Interference source is wanted there are two kinds, one kind is that the little yardstick irregular body in ionosphere causes radio when gps signal passes through ionosphere
The scattering of ripple, causes navigation signal intensity and the quick random fluctuations of phase place and fluctuation, this phenomenon to be referred to as ionosphere sudden strain of a muscle
It is bright；Another kind is the direct interference from solar radio radiation.During solar radio solar radio burst, solar radio radiation (radio) can be big suddenly
Amplitude increases, if the frequency range of outburst covers the frequency of navigation signal, different degrees of radio will be caused to disturb to GPS,
It is mainly shown as that signal to noise ratio declines.Observation shows that strong solar radio burst can interfere significantly with the reception of navigation electric wave, energy when serious
Cause receiver losing lock, even interrupt completely so that application system loses the basic functions such as navigation, positioning, time service.Therefore, wrap
Include GPS of America and China's dipper system always affects satellite navigation system performance in interior solar radio noise interference problem
Important factor in order.
(about 100S.F.U., 1S.F.U.=10 when the radiant intensity of solar radio burst can reach quiet-22w/Hz m2)
Decades of times, or even thousands of times.By taking the outburst on March 5th, 2012 as an example, distinguish in the radiant intensity of 1.0 and 2.0GHz frequencies
Reach 501812 and 18958S.F.U. (see Fig. 3)
Radio storm affects the flow minimum threshold of GPS to be generally acknowledged that in 4000S.F.U. or so, solar day in December, 2006
Sequence of events has been broken out in face, wherein having L-band solar radio burst stronger twice on 12 and 13.Fig. 4-5 is L1, L2
The solar radio radiation flow of two GPS communication frequencies, carrier-to-noise ratio change, the gps satellite quantity to be received of singly standing and globally
Situations such as face station losing lock and position error, the change and carrier-to-noise ratio for finding two frequency radio flows is in good positive correlation.
Using the Traffic Anomaly and gps signal time of losing lock of having observed frequency point data statistics different frequency point solar activity
Relation, it is seen that the solar radio radiation Traffic Anomaly in 1415MHz frequencies and GPS navigation signal losing lock relatedness are maximum,
This has substantial connection with GPS working frequency range, as a result as shown in Figure 6.
Fig. 7 is, it is evident that this time during radio storm, the GPS stations such as Kunming, Taiwan, Wuhan, Beijing of China occur obvious
Loss of lock, and multiple stations, many gps satellite signals interrupt completely up to 6 minutes, during radio storm, multiple stations locks
Fixed number of satellite is less than 4 so that GPS real-time positioning services complete failure.
We are to Japanese open country side mountain radio telescope (Nobeyama Radio Polarimeters) 23 week peak year
(2000-2005) solar radio burst for greatly observing between 6 years phases carried out rough Statistics.In 456 outbursts are observed,
Flow has 75 higher than 1000S.F.U., the amounting to higher than 1000S.F.U. in low-frequency range (1.0,2.0 and 3.75GHz) flow
37.9 hours are observed daily in view of NORP, are such as calculated by 24 hours, it is average annual to occur to affect in peak year very big period
The quantity of the outburst of GPS is about 16.All it is appreciable, it is seen that solar radio radiation no matter this is from the point of view of intensity and frequency
Outburst is one of inevitable influence factor of satellite navigation communication.
Beidou navigation satellite system (BDS) is independent development capability, the global navigation satellite of independent operating that China is implementing
System, the Beidou navigation satellite system after building up can round-the-clock in the world, round-the-clock provide high-precision for all types of user
Degree, highly reliable positioning, navigation, time service service and have concurrently short message communication capacity.The foundation of Beidou navigation satellite system, will be big
The development of big promotion China satellite navigation industrial chain, forms perfect national satellite navigation application industry and supports, promotes and ensure
System, promotes satellite navigation in the extensive application of national economy society every profession and trade.Meanwhile, break China's satellite navigation and apply in army
Thing field has great importance to external dependence and constraint, the development for promoting military capabilities.Application based on dipper system
It is that wherein the influence factor of spatial environmentss can not ignore premised on the stable of the Big Dipper, reliability.With solar energetic particles radiation
Impact it is different, solar radio solar radio burst mainly affects the propagation segment of satellite navigation system, and solar radio burst is with very noisy signal shape
Formula light velocity propagation, about eight minutes arrival satellite orbit moments caused on the communication link Noise enhancement after strong flare burst, greatly
It is big to be shifted to an earlier date the time of advent of solar energetic particles, therefore, the real-time monitoring of solar radio burst and timely alarm are to slow down to penetrate
The important means and approach of electrical interference.
At present, the country is not also specifically designed for the solar radio radiation jamming equipment and instrument of dipper system, the police of radio interference
Report services is mainly using external relevant data, and real-time, region and effectiveness are poor, it is impossible to meet scientific research and application clothes
Business demand.
This utility model emphasis is directed to China's Big Dipper, while taking into account other satellite navigation systems main in the world, develops L
The radio interference alert service platform of wave band solar radio burst multichannel, multifrequency point real-time watch device and navigation signal.Profit
With monitoring device, mainly China's dipper system performance in the case of solar radio burst is studied, obtain the L-band sun
Impact threshold value of the radio stream to triones navigation system, and to the geometric dilution of precision (DOP in position fixing process：Dilution of
Precision), capturing aeronautical satellite number, positioning precision etc. affects situation, while the influence degree and shadow to solar radio solar radio burst
Ringing rank carries out real-time alert, so as to provide sky for the reliability and stability for further improving China's independent research navigation system
Between environmental information service and support.In addition, using radio Flow Observation data, with reference to observation methods such as X-ray, optics, moreover it is possible to
The spectral evolution rule of research L-band burst and the evolutionary process of solar burst, improve cognition of the people to space weather
Level and prediction ability.
The content of the invention
This utility model provides a kind of research, early warning platform for solar radio burst interference navigation signal, mainly
Interference navigation signal communication aspects are broken out by force suitable for early warning L-band solar radio radiation；The significance that the system is set up is：Can
Quickly to find out L-band solar radio burst, being particularly that the dipper system that China greatly develops at present provides for navigation system can
The impacted warning information of energy, while as a kind of research platform, it is possible to obtain sun flow and navigation satellite signal quality become
The dependency of change situation, foundation is provided for theoretical to actual checking.
This utility model is achieved by the following technical solution：
This for solar radio burst disturb the research of navigation signal, early warning platform include solar radio radiation flow monitoring portion,
Navigation satellite signal monitoring portion, computer；
Wherein solar radio radiation flow monitoring portion includes antenna for radio astronomy, analog receiver system, scaling system, more than 3 work(
Rate-electric pressure converter, data acquisition unit；Navigation satellite signal monitoring portion includes navigation antenna, navigation signal receiver；Radio day
Line is connected by scaling system with analog receiver system, and analog receiver system is adopted by power vs. voltage transducer and data
Storage connects, and data acquisition unit is connected with computer, and computer is connected with scaling system；Navigation antenna is received by navigation signal
Machine is connected with computer.
The analog receiver system includes first order amplifier, power splitter, the isolator of more than 3, the filter of more than 3
Second level amplifier, the wave filter II of more than 3 that ripple device is more than I, 3；First order amplifier, power splitter, isolator, filtering
Device I, second level amplifier, wave filter II are sequentially connected, and wave filter II is connected with power vs. voltage transducer.
The scaling system includes noise source, microwave switch, and noise source is connected with microwave switch, and antenna for radio astronomy passes through microwave
Switch is connected with first order amplifier, and computer is connected with microwave switch, and carries out on-off control by conventional method.
The wave filter I and wave filter II are band filter.
Solar radio radiation flow monitoring portion is mainly by real time to cutting between solar radio radiation flow monitoring and noise source switch
Change, realize the precise calibration to multichannel solar radio radiation flow, to judge whether solar radio burst event, while navigation
Satellite-signal monitoring portion is used for the information such as the current navigation signal quality of real time record, solar radio radiation data on flows navigation letter
Number qualitative data, judges impact situation of the burst to signal quality；Computer is used for data receiver, Data Analysis Services,
Received using conventional method and analyzed；
Wherein solar radio radiation flow monitoring portion is mainly by the solar radio radiation telescope with delicate flow scaling function
Come what is realized：
First, the test to radio environment is completed, several is determined not by the frequency range of radio interference, with above-mentioned
Frequency range is designing band filter；Spatial transmission electromagnetic wave signal is converted into medium conduction electromagnetic wave signal by antenna for radio astronomy, is led to
The first order amplifier (low-noise amplifier) that antenna feed is input to analog receiver system is crossed, solar radio radiation signal is carried out
Amplify；
Then, first order amplifier output passes through 1：N power splitters will receive signal and be divided into the output of N roads, and by isolation
Device accesses multiple band filters I and enters line frequency selection, after band filter after the amplification of second level amplifier, then Jing
Power signal in band is converted to corresponding voltage signal by wave filter II, power vs. voltage transducer, by data acquisition unit
It is collected.
Calibration process is pointed to too by microwave switch switching noise source (while having noise source on off state concurrently), antenna for radio astronomy
Positive, cold empty several states complete the precision calibration to current solar radio radiation flow；
Control sequence is：Microwave switch being controlled first and being switched to noise source input, noise source closed mode records current
Each frequency performance number P50, then open noise source and record current each frequency performance number Pnoise, then microwave switch be switched to
Antenna for radio astronomy signal output, controls telescope and points to each frequency performance number P current under cold null recordsky, finally proceed to the sun with
P under track observation mode real time recordsun, by the comparison of above-mentioned four kinds of performance numbers, can resolve and obtain current solar radio radiation stream
Amount.
Navigation satellite signal monitoring portion adopts the frequency satellite navigation receiver system (GPS of a set of bimodulus three：L1, BD：B1 and
B2), Real-time Monitoring Data includes：Real-time monitoring GPS/BD satellite navigation signals, export in real time longitude and latitude, height, speed, UTC
Time, visible star number amount, positioning scenarios, geometric dilution of precision (including PDOP, TDOP, HDOP, VDOP, GDOP), it is seen that satellite
Signal to noise ratio, the elevation angle, deflection, and observation data such as pseudorange, carrier phase, narrow band power, broadband power.
This utility model device is by the way that in real time to the switching between solar radio radiation flow monitoring and noise source switch, it is right to realize
The precise calibration of multichannel solar radio radiation flow, to judge whether solar radio burst event, while many navigation signal ends
Hold for the current signal quality information of real time record, solar radio radiation data on flows navigation signal quality data, judge to penetrate
The impact situation to signal quality is sent out in electric detonation；
Wherein compare the satellite signal quality situation in quiet sun activity periods, including monitoring GPS/BD satellite navigation letters
Number, longitude and latitude, height, speed, UTC time, visible star number amount, positioning scenarios, geometric dilution of precision are exported in real time, it is seen that satellite
Signal to noise ratio, the elevation angle, deflection, and pseudorange, carrier phase, narrow band power, broadband power, as data sequence group 1, too
The various parameters collected in same fixed duration of positive burst period, as data sequence group 2, using T distribution variances
Whether significantly the difference of inspection contrast groups 1 and group 2, check the difference of two sequences, to put as credible more than confidence interval 95%
Letter is interval.
Effect of the present utility model：
This utility model can be obtained the sun and be penetrated using solar radio radiation observation and the scheme of satellite signal quality combined monitoring
Relation of the magnitude of current outburst value to the impact between satellite signal quality numerically, simultaneously because satellite qualitative data is from more
Individual aspect, include geometric accuracy because, it is seen that the signal to noise ratio of satellite, the elevation angle, deflection, and pseudorange, carrier phase, arrowband work(
Rate, broadband power etc. observe data, can preferably find that radio changes in flow rate is to above-mentioned observation number in the solar burst time period
According to impact, form effectively collection, a research platform for analysis.
Description of the drawings
Fig. 1 is this utility model apparatus structure schematic diagram；
Fig. 2 is analog receiver system, scaling system structural representation；
Fig. 3 is the strong burst figure of the L-band sun of on March 5th, 2012；Wherein scheme to be produced when A, B are solar radio burst
The rotation direction signal of left and right two；
Fig. 4 is that the ZHU-WAAS GPS ground stations L1 frequencies carrier-to-noise ratio of on December 6th, 2006 declines and visible star number is with the sun
Activity change situation, left figure is carrier-to-noise ratio decline, and right figure is that visible star number changes with solar activity；
Fig. 5 is the solar radio radiation of on December 6th, 2006 activity whole world GPS survey station losing lock situations and position error, and A figures are to lose
Lock situation, B figures are position error；
Fig. 6 is the relatedness between the activity of different frequency solar radio radiation and navigation satellite signal losing lock；
During Fig. 7 is the radio storm of on December 13rd, 2006, the domestic and Australian part GPS station locking satellite numbers of China
Over time, A figures are China, and B figures are Australia.
Specific embodiment
This utility model is described in further detail below by drawings and Examples, but this utility model protection domain
Be not limited to the content, if no special instructions be conventional equipment and according to a conventional method implement and control.
Embodiment 1：As shown in Figure 1, 2, this disturbs the research of navigation signal, early warning platform to include for solar radio burst
Solar radio radiation flow monitoring portion, navigation satellite signal monitoring portion, computer；Wherein solar radio radiation flow monitoring portion includes radio day
Line, analog receiver system, scaling system, 3 power vs. voltage transducers, data acquisition units；Wrap in navigation satellite signal monitoring portion
Include navigation antenna, navigation signal receiver；Antenna for radio astronomy is connected by scaling system with analog receiver system, analog receiver
System is connected by power vs. voltage transducer with data acquisition unit, and data acquisition unit is connected with computer, and computer is with calibration
System connection；Navigation antenna is connected by navigation signal receiver with computer；
The analog receiver system includes first order amplifier, power splitter, 3 isolators, 3 wave filter I, 3 the
Two-stage amplifier, 3 wave filter II；First order amplifier, power splitter, isolator, wave filter I, second level amplifier, wave filter
II is sequentially connected, and wave filter II is connected with power vs. voltage transducer；Scaling system include noise source, microwave switch, noise source with
Microwave switch connects, and antenna for radio astronomy is connected by microwave switch with first order amplifier, and computer is connected with microwave switch；Filtering
Device I and wave filter II are band filter.
Antenna for radio astronomy receives L-band (1.0GHz- mainly using the main burnt formula antenna of equatorial of a paraboloid structure
1.8GHz) solar radio radiation flow in frequency range, while taking into account the solar radio radiation centered on 2.84GHz in frequency ± 5MHz bandwidth
Signal is received.Leading indicator:
1st, diameter：4.5 rice；
2nd, polarization mode：Double-circle polarization；
3rd, bandwidth of operation：1.0GHz-1.8GHz, 2.84GHz ± 5MHz；
4th, antenna gain：1.0GHz-1.8GHz sections >=30dBi；2.84GHz ± 5MHz sections >=35dBi；
5th, tracking accuracy：1/10～1/15 beam angle；
6th, following range：Right ascension ± 120 °, declination ± 30 °；
7th, tracking velocity：Earth rotation speed+snap-action (30 °/point).
Analog receiver system is using broadband amplification+multiple spot frequency filtering narrowband slice of the gating without radio interference, 4-
Determined according to radio environment between 10MHz, tentatively amplified signal by first order wideband low noise amplifier, then adopted
Being gated with narrow band filter needs the frequency range of monitoring, then signal is further amplified by second level amplifier, using narrow
Band filter gating needs the frequency range of monitoring, then signal power is converted to into corresponding electricity by power vs. voltage detection conversion
Pressure signal, is acquired by Multichannel data acquisition device, and is sent to host computer and be analyzed, store.
Calibration process is pointed to too by microwave switch switching noise source (while having noise source on off state concurrently), antenna for radio astronomy
Positive, cold empty several states complete the precision calibration to current solar radio radiation flow；
At regular intervals, calibration is carried out to receiver with standard noise source, the sun (P is gathered respectivelysun), cold sky
(Psky), noise source (Pnoise) and noise source turn off when (equivalent to access 50 Ω matched loads when P50) data.
During the antenna for radio astronomy alignment sun, the antenna temperature under the quiet state of the sun is obtained：Tqs(quiet sun and sky background
Brightness temperature)
Tqs=GA·(Fqs+Fb) (1)
Antenna for radio astronomy is directed at cold space-time, obtains the antenna temperature that cold sky causes：Tsky(cold air temperature degree)
Tsky=GA·Fsky (2)
The difference that above-mentioned 4 performance numbers are input into according to it, can be obtained by following equations group：
Wherein FqsFor the flux density of quiet sun, can be calculated by following：
According to the formula that Benz et al. is arranged for 2009, quiet solar radio radiation flow power spectral density FqsCan be by following public affairs
Formula is approximate：
Fqs' (f)=8.45 × 10-1f0.5617f∈(350MHz,6000MHz) (4)
In view of the impact that solar cycle radiates to quiet solar radio radiation, quiet solar radio radiation flux density is revised again
For：
Fqs(f)=Fqs'+ΔF×Z (5)
In formula Z be relative sunspot number (by website www.ngdc.noaa.gov inquiry obtain), coefficient factor Δ F
Be given by equation below：
Δ F=1.20 × 10-5f1.374,f∈(30MHz,2770MHz) (6)
Δ F=35.12f-0.5045,f∈(2770MHz,10000MHz) (7)
FbFor the flux density of sky background；
TqsFor quiet sun and the brightness temperature of sky background；
TskyFor cold air temperature degree；
TnoiseFor the corresponding temperature of noise source excess noise ratio；
T50For the corresponding temperature of 50 Ω matched loads；
GAAnd GRRespectively antenna and receiver gain；
R is random noise；
During the antenna alignment sun, per passage, the performance number of output can be drawn by following formula：
Pobs(f)=GR(f)·GA(f)·(Fobs(f)+Fb(f))+r(f) (8)
The cold space-time of antenna alignment, per passage, the performance number of output can be drawn by following formula：
Psky(f)=GR(f)·GA(f)·Fb(f)+r(f) (9)
Upper two formula is subtracted each other and is obtained, and obtains the flow value of the sun：
Being accessed by the switch of noise source simultaneously can be with real time correction receiver gain variation with temperature：
Wherein Tnoise-T50Can be determined by the excess noise ratio of the noise source for selecting.
In quiet sun period, the change of antenna gain can be obtained by the cold empty and quiet sun of antenna alignment：
For navigation signal quality-monitoring aspect：
By real-time monitoring and analysis of the high-precision GPS/BD navigation neceivers to GPS and BD satellite navigation system signals,
Impact situation of the reflection solar radio burst to its some index.
The plateform system of Main Basiss is：Frequency satellite navigation receiver (the GPS of a set of bimodulus three：L1, BD：B1 and B2)；
Real-time Monitoring Data includes：
Real-time monitoring GPS/BD satellite navigation signals, export in real time longitude and latitude, height, speed, UTC time, visible star number
Amount, positioning scenarios, geometric dilution of precision (including PDOP, TDOP, HDOP, VDOP, GDOP), it is seen that the signal to noise ratio of satellite, the elevation angle,
Deflection, and the observation data such as pseudorange, carrier phase, narrow band power, broadband power；
Real time record：
The working condition of real time record GPS/BD navigation neceiver, observation data and analysis result, record time interval is
1s；
Data analysiss：The in real time working condition of analysis GPS/BD navigation neceivers and observation data, to state and data
Variable quantity is analyzed in real time, while can be analyzed to ionospheric state by the collection of original observed quantity；
Using the various relevant parameters collected in the fixed duration in quiet sun period in research, as data sequence
Group 1, the various parameters collected in solar radio burst period same fixed duration, as data sequence group 2, using T
Distribution variance checks the difference of contrast groups 1 and group 2, whether significantly the difference of two sequences is checked, with more than confidence interval 95%
For credible confidence interval.Illustrate to be affected really if significantly.
Claims (5)
1. it is a kind of for solar radio burst disturb navigation signal research, early warning platform, it is characterised in that：Including solar radio radiation
Flow monitoring portion, navigation satellite signal monitoring portion, computer；Wherein solar radio radiation flow monitoring portion includes antenna for radio astronomy, simulation
Receiver system, scaling system, more than 3 power vs. voltage transducers, data acquisition units；Navigation satellite signal monitoring portion includes
Navigation antenna, navigation signal receiver；Antenna for radio astronomy is connected by scaling system with analog receiver system, analog receiver system
System is connected by power vs. voltage transducer with data acquisition unit, and data acquisition unit is connected with computer, computer and scaling system
Connection；Navigation antenna is connected by navigation signal receiver with computer.
2. research, the early warning platform for disturbing navigation signal for solar radio burst according to claim 1, its feature exists
In：Analog receiver system includes first order amplifier, power splitter, the isolator of more than 3, I, 3, the wave filter of more than 3
Second level amplifier, the wave filter II of more than 3 above；First order amplifier, power splitter, isolator, wave filter I, second
Level amplifier, wave filter II are sequentially connected, and wave filter II is connected with power vs. voltage transducer.
3. research, the early warning platform for disturbing navigation signal for solar radio burst according to claim 2, its feature exists
In：Scaling system includes noise source, microwave switch, and noise source is connected with microwave switch, and antenna for radio astronomy passes through microwave switch and the
First stage amplifier connects, and computer is connected with microwave switch.
4. research, the early warning platform for disturbing navigation signal for solar radio burst according to claim 1, its feature exists
In：Wave filter I and wave filter II are band filter.
5. research, the early warning platform for disturbing navigation signal for solar radio burst according to claim 1, its feature exists
In：Navigation signal receiver is the frequency satellite navigation receiver of bimodulus three.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405583A (en) * | 2016-11-03 | 2017-02-15 | 中国科学院云南天文台 | Research and early warning platform for influence on navigation signals caused by solar radio burst, and method of research and early warning platform |
| CN107315175A (en) * | 2017-06-06 | 2017-11-03 | 芜湖航飞科技股份有限公司 | Calibration control device based on the Big Dipper |
| CN107820311A (en) * | 2017-12-05 | 2018-03-20 | 中国科学院云南天文台 | For the quick early warning system of solar radio burst interference navigational communications event |
| CN109063302A (en) * | 2018-07-24 | 2018-12-21 | 山东大学 | The high-resolution solar radio radiation data processing system and method for adaptive outburst judgement |
-
2016
- 2016-11-03 CN CN201621179219.3U patent/CN206133012U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405583A (en) * | 2016-11-03 | 2017-02-15 | 中国科学院云南天文台 | Research and early warning platform for influence on navigation signals caused by solar radio burst, and method of research and early warning platform |
| CN107315175A (en) * | 2017-06-06 | 2017-11-03 | 芜湖航飞科技股份有限公司 | Calibration control device based on the Big Dipper |
| CN107820311A (en) * | 2017-12-05 | 2018-03-20 | 中国科学院云南天文台 | For the quick early warning system of solar radio burst interference navigational communications event |
| CN109063302A (en) * | 2018-07-24 | 2018-12-21 | 山东大学 | The high-resolution solar radio radiation data processing system and method for adaptive outburst judgement |
| CN109063302B (en) * | 2018-07-24 | 2022-11-04 | 山东大学 | High-resolution solar radio data processing system and method for self-adaptive outbreak judgment |
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