CN107219538A - A kind of ionospheric scintillation monitoring system based on Beidou navigation - Google Patents
A kind of ionospheric scintillation monitoring system based on Beidou navigation Download PDFInfo
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- CN107219538A CN107219538A CN201710514320.2A CN201710514320A CN107219538A CN 107219538 A CN107219538 A CN 107219538A CN 201710514320 A CN201710514320 A CN 201710514320A CN 107219538 A CN107219538 A CN 107219538A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/20—Integrity monitoring, fault detection or fault isolation of space segment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/21—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a kind of ionospheric scintillation monitoring system based on Beidou navigation, including：Antenna, receives Big Dipper satellite signal, and Big Dipper satellite signal is transferred into the receiver is handled；Receiver, by Serial Port Line by the signal intensity SI and carrier phase phi information transfer of satellite-signal to computer；Computer, comprising data collection and analysis module and system display module, the satellite signal strength SI and carrier phase phi information of the data analysis module processing hardware output carry out data display by the system display module.Beneficial effect：The present embodiment employs internal crystal oscillator source, frequency stabilization and mutually make an uproar it is low, with compared with strong anti-interference ability.The signal intensity SI and carrier phase phi information of the direct output satellite signal of computer, ionospheric scintillation situation can be calculated using these information, more convenient and simple than original equipment and reliable and stable.
Description
Technical field
Beidou navigation is based on the invention belongs to the technical field that big-dipper satellite monitoring and ionosphere are monitored, more particularly to one kind
Ionospheric scintillation monitoring system.
Background technology
When the radio signal of satellite launch passes through ionosphere, Ionospheric irregularity can cause signal intensity, phase
Quick random fluctuation, this phenomenon of people is called ionospheric scintillation.Ionospheric scintillation can often cause ground receiver to receive
Signal there is error code and signal distortion so that influence navigation and communication system reliability and precision.Therefore, observational study electricity
Absciss layer flicker is not only the important means of research Global Ionospheric irregular structure and variation characteristic, and as global range is led
Boat and communication system are growing to the dependence of space platform, and it is also corresponding into problem of concern.
Global round-the-clock satellite navigation positioning that GPS geo-location system is that the U.S. is completed in nineteen nineties and
Time dissemination system, its appearance provides a kind of new effective means for ionization detection layer flicker.Before this, to ionospheric scintillation
Detection study be mainly based upon the observation of radar or Geostationary Satellite Beacon data, sometimes even obtained by firing a rocket
Of short duration observation data.And 24 gps satellites are around-the-clock runs on high, and earthward launch the double frequency L through ovennodulation
Band signal, this causes ionospheric scintillation caused by continuous monitoring Ionospheric irregularity in the world becomes can
Energy.
Current existing Ionospheric scintillation monitoring device uses temperature-compensating crystal oscillator source (TCXO), and can often produce can not be low
The noise that bandpass filter is filtered out, this Ionospheric scintillation monitoring device antijamming capability is poor, and majority is simplest electricity
Design on road.It is basic to get based on data in use, equipment dependability is poor, network service can not be ensured, equipment can not
Remote debugging, the use under complex environment can not be met.
The content of the invention
The technical problems to be solved by the invention are to be directed to the not enough of above-mentioned background technology to be based on Beidou navigation there is provided one kind
Ionospheric scintillation monitoring system, specifically realized by following technical scheme：
The ionospheric scintillation monitoring system based on Beidou navigation, including：
Antenna, receives Big Dipper satellite signal, and Big Dipper satellite signal is transferred into the receiver is handled；
Receiver, by Serial Port Line by the signal intensity SI and carrier phase phi information transfer of satellite-signal to computer；
Computer, includes data collection and analysis module and system display module, the satellite of the data analysis module processing hardware output
Signal intensity SI and carrier phase phi information, data display is carried out by the system display module.
The further design of the ionospheric scintillation monitoring system based on Beidou navigation is that the antenna is GNSS days
Line, and the feeder line and receiver communication connection.
The further design of the ionospheric scintillation monitoring system based on Beidou navigation is that the receiver passes through
RS-232 Serial Port Lines are communicated to connect with the computer
The further design of the ionospheric scintillation monitoring system based on Beidou navigation is that the receiver is using interior
Portion crystal oscillator source OCXO.
The further design of the ionospheric scintillation monitoring system based on Beidou navigation is, the data collection and analysis
Module, first the initial data to flood tide carries out calculating analysis, and the signal intensity SI and carrier phase phi that calculate are deposited
It is stored in buffer area, initial data and corresponding signal intensity SI and carrier phase phi is deposited again when flashing and occurring
Storage.
The further design of the ionospheric scintillation monitoring system based on Beidou navigation is that the buffering area is used to deposit
Store up 15-30min initial data.
The further design of the ionospheric scintillation monitoring system based on Beidou navigation is, is sentenced according to the condition of setting
Surely the generation flashed, the condition set as：N times reach setting value X in continuous a period of time M.
The further design of the ionospheric scintillation monitoring system based on Beidou navigation is, leads in the numeral of receiver
In road, it is integrated and cumulative after, export in-phase component I and quadrature phase component Q, signal intensity calculated by algorithm, will be described
Signal intensity is sent into six rank butterworth filters and is filtered, and the signal intensity after the trend that is eliminated is disappearing after filtering
Except calculating total Amplitude scintillation index S4 values after trend, then it is modified filtered out from ambient noise, draw after amendment
S4 values.
The further design of the ionospheric scintillation monitoring system based on Beidou navigation is, is irrigated from the Bart of six ranks
Hereby high-pass filter, by the way that by the wave filter, phase observations amount is shown into the carrier phase value after filter effect trend, is leading to
Cross algorithm and calculate phase scintillation index σ φ.
The further design of the ionospheric scintillation monitoring system based on Beidou navigation is, phase is calculated according to following formula
Scintillation index σ φ,φ is carrier phase in formula.
The advantage of the invention is that：
(1) receiver of ionospheric scintillation monitoring system employs internal crystal oscillator source (OCXO), frequency stabilization and mutually make an uproar it is low,
With compared with strong anti-interference ability, it is to avoid pass through whole ionosphere in satellite-signal, Ionospheric irregularity causes signal phase
During with the quick random fluctuation of amplitude, the Doppler of satellite-signal can be caused by this quick phase place change (phase scintillation) occur
Frequency displacement, so as to beyond the bandwidth of phaselocked loop, cause phase failure, while the weakening of amplitude will cause satellite signal to noise ratio to drop
It is low to the problem of below the receiver limit, causing yard losing lock；
(2) computer of ionospheric scintillation monitoring system can direct output satellite signal signal intensity SI and carrier wave phase
Position φ information, ionospheric scintillation situation can be calculated using these information, more convenient and simple than original equipment and reliable and stable；
(3) software architecture science in the ionospheric scintillation monitoring system based on the Big Dipper, rationally, data enter after software in real time
Resolved, the effect that ionosphere is monitored in real time can be reached, while algorithm is advanced, fully meet actual use precision.
Brief description of the drawings
Fig. 1 is the ionospheric scintillation monitoring system configuration diagram based on Beidou navigation.
Fig. 2 is ionospheric scintillation monitoring system data receiver and process chart based on Beidou navigation.
Fig. 3 is amplitude scintillation index calculation flow chart.
Fig. 4 is phase scintillation index calculation flow chart.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
As shown in figure 1, the ionospheric scintillation monitoring system based on Beidou navigation, mainly by antenna, receiver and calculating
Machine is constituted.Antenna, receives Big Dipper satellite signal, and Big Dipper satellite signal is transferred into receiver processing.Receiver, passes through Serial Port Line
By the signal intensity SI and carrier phase phi information transfer of satellite-signal to computer.Computer, includes data collection and analysis mould
Block and system display module, the satellite signal strength SI and carrier phase phi information of data analysis module processing hardware output, lead to
Cross system display module and carry out data display.
In the present embodiment, antenna is GNSS antenna, and feeder line is communicated to connect with receiver.Receiver passes through RS-232 serial ports
Line is with computer communication connection receiver using internal crystal oscillator source OCXO.
Such as Fig. 2, data collection and analysis module first carries out calculating analysis to the initial data of flood tide, and by the letter calculated
Number strength S I and carrier phase phi be stored in buffer area, flash occur when again to initial data and corresponding signal
Strength S I and carrier phase phi are stored.In the present embodiment, buffering area is used for the initial data for storing 15-30min.According to setting
The generation of fixed condition criterion flicker, the condition set as：N times reach setting value X in continuous a period of time M.
Specifically, the present embodiment realizes communication between receiver and computer by using standard RS232 communication protocols,
Implementing in VC6.0 is first to initialize serial communication with CreatFile () function, including obtains serial device handle
And messaging parameter setting is carried out to it, then receive data using ReadFile ().After data flow is obtained, according to data mark
Will frame therefrom isolates original information data, be saved in raw data buffer (in order to obtain flicker occur before initial data,
Here the buffering area of 20min original data volumes can be stored by opening one), while calculating one according to initial data with per minute
Secondary S4 indexes, are stored in the data buffer zone calculated, after 10min data are arrived in accumulation, judgement symbol position, according to flag bit
Come determine initial data storage whether.
In actually measurement analysis, it is contemplated that there are the factors such as multipath effect, clock correction and also result in a S4 once in a while and refer to
Number is very big, therefore a S4 index once in a while is not meant to greatly flicker very much, it is considered to there is 6 S4 (one in continuous 10min
Minute data) it is more than some value (typically taking 0.3) and weighs to flash as standard and whether occurs.When it is determined that there is flicker
When, the initial data that 10min before the flicker occurs is taken out from data buffer zone is stored to data file, while judging the flicker
Whether terminate, if flicker continues, initial data is stored successively, terminated if flashed, only then preserved after flicker termination
10min initial data.No matter have and do not flash generation, the data being computed out are all saved to data file.
Such as Fig. 3, in digital receiver passage, it is integrated and cumulative after, system output in-phase component I and quadrature phase component
Q, signal intensity is calculated by algorithm, is sent to six rank butterworth filters and is filtered, is eliminated after trend
Signal intensity.Total Amplitude scintillation index S4 values are calculated after elimination trend after filtering, because S4 indexes sometimes also have very
A big part is probably derived from ambient noise, therefore it is modified again, draws revised S4 values.
As shown in figure 4, for single frequency receiving, the local clock correction of receiver, satellite clock correction, SA policies and troposphere etc.
Also the phase place change for receiving signal can be caused, therefore need also exist for reducing this influence by the method for filtering elimination trend.Choosing
The fertile hereby high-pass filter of the Bart for being 0.1Hz with a six rank 3dB cut-off frequencies, allows phase observations amount by the wave filter, obtains
The carrier phase value gone out after filter effect trend, phase scintillation index is being calculated by algorithm.The present embodiment is according to following formula meter
Phase scintillation index σ φ are calculated,φ is carrier phase in formula.
Specifically, the circular of the present embodiment scintillation index given below：
In ionospheric scintillation monitoring, scintillation intensity can pass through calculated amplitude scintillation index (S4) and phase scintillation index
(σ φ) is weighed, and amplitude scintillation index S4 computational methods are as follows：
Amplitude scintillation index (S4 indexes) generally obtains a value with calculating per minute, and it is defined as the average of signal intensity
The standard deviation of normalized signal intensity：
In formula<>Represent one minute average, SI is signal intensity, that is, the signal received power；
The first step：Calculate signal intensity SI
In digital receiver passage, it is integrated and cumulative after, system exports 3 in-phase component IE,IP,ILAnd orthorhombic phase
Component QE,QP,QL, measure, therefrom extracted with phase and orthorhombic phase sampled data I with 1kHz sampling rate for amplitude scintillationP,
QP, narrow band power NBP and broadband power WBP are then gone out with 0.02s interval calculation：
Assuming that in 0.02s, I and Q not including noise are a constant, noise variable NiTo represent, then Ii and Qi points
It is not：
Ii=I+Ni (4)
Qi=Q+Ni (5)
Formula (4), (5) are substituted into behind (2), (3), then (3) formula is subtracted with (2) formula, it is possible to obtain receiving the power of signal,
That is signal intensity SI：
SI=NBP-WBP=380 (I2+Q2) (6)
Second step：Calculate and filter the signal intensity SI ' after the trend that disappears
For single-frequency GPS receiver, the factor such as satellite motion and multipath also results in the changed power for receiving signal, because
This is necessary to eliminate trend to weaken this influence by LPF, in following expression formula, represents that filtering is eliminated with SI '
Signal intensity after trend, it is obtained by the way that SI is sent into after 6 rank butterworth filters are filtered；
6 rank butterworth filters are made up of 2 rank wave filters of 3 cascades, for each 2 rank wave filter, its S plane
Equation is met：
In formulafNFor the incoming frequency of wave filter, unit Hz, coefficient a1, a2, a3 are respectively：
In time domain, 2 rank wave filters meet following equation：
Wherein, coefficient expressions are respectively in formula：
Δ t values 0.02s；In equation (11), μ1,k+1For the kth input value of+1 time, i.e., first order wave filter is defeated
Enter；μ2,k+1、μ3,k+1Represent the 1st, the output of 2 grades of wave filters, i.e., the 2nd, the input of 3 grades of wave filters：
μ1,k+1=(NBP-WBP)k+1 (18)
Last wave filter is output as：
After low-pass filtered, an elimination Trend value in 1 or so bounce is obtained with input divided by low pass output：
3rd step：Calculate total S4 values
After elimination trend after filtering, equation (1) is revised as：
4th step：Calculate the S4 values based on noise
S4 indexes defined in formula (1), (22), which sometimes also have, is greatly probably derived from ambient noise, therefore has
Necessity rejects the influence of this part, can calculate what this was produced based on noise by trying to achieve the average of signal to noise ratio in 1 minute
S4 values：
In formulaThe signal to noise ratio average exported for system；
5th step：Calculate S4 correction values
Total S4 values square subtract the S4 values square produced based on noise, obtain revised S4 values square, are obtained through evolution
To S4 correction values：
The computational methods of phase scintillation index (σ φ) are as follows：
Phase scintillation is determined usually using the standard deviation sigma φ of carrier phase：
φ is carrier phase in formula；Its algorithm performs step is as follows：
The first step, calculates the carrier phase phi after filtering elimination trend
For single-frequency GPS receiver, the local clock correction of receiver, satellite clock correction, SA policies and troposphere etc. can also draw
The phase place change for receiving signal is acted, therefore needs also exist for reducing this influence by the method for filtering elimination trend；Dodged with amplitude
Unlike bright index analysis, the influence of the phase in addition to ionospheric scintillation has gradual feature, by from 6 ranks
3dB cut-off frequencies are the 0.1Hz fertile hereby high-pass filter of Bart, allow phase observations amount by the wave filter, can remove at this
Low-frequency effects below cut-off frequency；
With original phase value φin,k+1It is used as the input of the wave filter：
μ1,k+1=φin,k+1 (26)
The difference of input and the output of prime wave filter constitutes the input of rear stage：
μi,k+1=μi-1,k+1-Xi-1,1,k+1；I=2,3 (27)
Last wave filter is output as：
φhpf,k+1=μ3,k+1-X31,k+1 (28)
After high-pass filtering, an elimination Trend value in 1 or so bounce is obtained with input divided by high pass output：
For phase scintillation, the Γ coefficients in filtering equations are also different with Amplitude scintillation：
Second step, calculates phase scintillation；
The receiver of the ionospheric scintillation monitoring system of the present embodiment employs internal crystal oscillator source (OCXO), frequency stabilization and
Mutually make an uproar low, with compared with strong anti-interference ability, it is to avoid pass through whole ionosphere in satellite-signal, Ionospheric irregularity causes letter
During the quick random fluctuation of number phase and amplitude, satellite-signal can be caused by this quick phase place change (phase scintillation) occur
Doppler frequency shift, so as to beyond the bandwidth of phaselocked loop, cause phase failure, while the weakening of amplitude will cause satellite to believe
Make an uproar than being reduced to below the receiver limit, the problem of the causing yard losing lock computer of ionospheric scintillation monitoring systems can be direct
The signal intensity SI and carrier phase phi information of output satellite signal, ionospheric scintillation situation can be calculated using these information,
Software architecture science, conjunction in more convenient and simple than original equipment and reliable and stable ionospheric scintillation monitoring systems of the based on the Big Dipper
Reason, data are resolved after entering software in real time, the effect that ionosphere is monitored in real time can be reached, while algorithm is advanced, completely
Meet Shi Jishiyong precision.
More than, it is only preferably embodiment, but protection scope of the present invention is not limited to this of the invention, it is any ripe
Know those skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its present invention
Design is subject to equivalent substitution or change, is all included within the scope of the present invention.
Claims (10)
1. a kind of ionospheric scintillation monitoring system based on Beidou navigation, it is characterised in that the ionosphere based on the Big Dipper is dodged
Bright monitoring system includes：
Antenna, receives Big Dipper satellite signal, and Big Dipper satellite signal is transferred into the receiver is handled；
Receiver, by Serial Port Line by the signal intensity SI and carrier phase phi information transfer of satellite-signal to computer；Calculate
Machine, includes data collection and analysis module and system display module, the satellite-signal of the data analysis module processing hardware output
Strength S I and carrier phase phi information, data display is carried out by the system display module.
2. the ionospheric scintillation monitoring system according to claim 1 based on Beidou navigation, it is characterised in that the antenna
For GNSS antenna, and the feeder line is communicated to connect with the receiver.
3. the ionospheric scintillation monitoring system according to claim 1 based on Beidou navigation, it is characterised in that the reception
Machine is communicated to connect by RS-232 Serial Port Lines and the computer
4. the ionospheric scintillation monitoring system based on Beidou navigation according to claim 1, it is characterised in that the receiver
Using internal crystal oscillator source OCXO.
5. the ionospheric scintillation monitoring system based on Beidou navigation according to claim 1, it is characterised in that the data are adopted
Set analysis module, first carries out calculating analysis to the initial data of flood tide, and by the signal intensity SI and carrier phase phi that calculate
Progress is stored in buffer area, and initial data and corresponding signal intensity SI and carrier phase phi are entered again when flashing and occurring
Row storage.
6. the ionospheric scintillation monitoring system based on Beidou navigation according to claim 5, it is characterised in that the buffering area
Initial data for storing 15-30min.
7. the ionospheric scintillation monitoring system based on Beidou navigation according to claim 5, it is characterised in that according to setting
Condition criterion flicker generation, the condition set as：N times reach setting value X in continuous a period of time M.
8. the ionospheric scintillation monitoring system based on Beidou navigation according to claim 1, it is characterised in that in receiver
In digital channel, it is integrated and cumulative after, export in-phase component I and quadrature phase component Q, signal intensity calculated by algorithm,
The signal intensity is sent into six rank butterworth filters to be filtered, the signal intensity after the trend that is eliminated, passed through
Total Amplitude scintillation index S4 values are calculated after filtering elimination trend, then it is modified filtered out from ambient noise, are drawn
Revised S4 values.
9. the ionospheric scintillation monitoring system based on Beidou navigation according to claim 1, it is characterised in that from six ranks
The fertile hereby high-pass filter of Bart, by the way that by the wave filter, phase observations amount is shown into the carrier phase after filter effect trend
Value, phase scintillation index σ φ are being calculated by algorithm.
10. the ionospheric scintillation monitoring system based on Beidou navigation according to claim 1, it is characterised in that according to following formula
Phase scintillation index σ φ are calculated,φ is carrier phase in formula.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983258A (en) * | 2018-05-30 | 2018-12-11 | 南京信息工程大学 | A kind of GNSS ionospheric scintillation and TEC monitoring device |
| CN109188474A (en) * | 2018-08-14 | 2019-01-11 | 中国科学院光电研究院 | A kind of ionospheric scintillation monitoring system for significantly ionospheric scintillation |
| CN111413713A (en) * | 2020-03-30 | 2020-07-14 | 中国科学院地质与地球物理研究所 | GNSS ionized layer monitoring device and method for monitoring ionized layer |
| CN111413716A (en) * | 2020-03-30 | 2020-07-14 | 中国科学院地质与地球物理研究所 | Monitoring system and monitoring method |
| CN115015973A (en) * | 2022-08-09 | 2022-09-06 | 龙旗电子(惠州)有限公司 | GPS interference detection method, device, equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102176046A (en) * | 2011-01-28 | 2011-09-07 | 国家卫星气象中心 | Ionospheric scintillation monitor and monitoring method based on polar orbiting meteorological satellite signal |
| CN106134461B (en) * | 2010-12-30 | 2014-05-28 | 北京遥测技术研究所 | A kind of spaceborne ionosphere Amplitude scintillation monitoring device |
| CN106134463B (en) * | 2011-05-10 | 2014-08-27 | 中国电子科技集团公司第二十二研究所 | Ionospheric scintillation and ionosphere total electron content monitoring device |
-
2017
- 2017-06-28 CN CN201710514320.2A patent/CN107219538A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106134461B (en) * | 2010-12-30 | 2014-05-28 | 北京遥测技术研究所 | A kind of spaceborne ionosphere Amplitude scintillation monitoring device |
| CN102176046A (en) * | 2011-01-28 | 2011-09-07 | 国家卫星气象中心 | Ionospheric scintillation monitor and monitoring method based on polar orbiting meteorological satellite signal |
| CN106134463B (en) * | 2011-05-10 | 2014-08-27 | 中国电子科技集团公司第二十二研究所 | Ionospheric scintillation and ionosphere total electron content monitoring device |
Non-Patent Citations (2)
| Title |
|---|
| 李国主 等: "GPS电离层闪烁实时监测系统的设计与实现", 《电波科学学报》 * |
| 李国主: "中国中低纬电离层闪烁监测、分析与应用研究", 《中国博士学位论文全文数据库 基础科学辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983258A (en) * | 2018-05-30 | 2018-12-11 | 南京信息工程大学 | A kind of GNSS ionospheric scintillation and TEC monitoring device |
| CN109188474A (en) * | 2018-08-14 | 2019-01-11 | 中国科学院光电研究院 | A kind of ionospheric scintillation monitoring system for significantly ionospheric scintillation |
| CN109188474B (en) * | 2018-08-14 | 2022-12-02 | 中国科学院光电研究院 | Ionospheric scintillation monitoring system for large-amplitude ionospheric scintillation |
| CN111413713A (en) * | 2020-03-30 | 2020-07-14 | 中国科学院地质与地球物理研究所 | GNSS ionized layer monitoring device and method for monitoring ionized layer |
| CN111413716A (en) * | 2020-03-30 | 2020-07-14 | 中国科学院地质与地球物理研究所 | Monitoring system and monitoring method |
| CN115015973A (en) * | 2022-08-09 | 2022-09-06 | 龙旗电子(惠州)有限公司 | GPS interference detection method, device, equipment and storage medium |
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