CN106597473A - Antenna tracking and self-calibration apparatus and method for satellite communications among stations - Google Patents
Antenna tracking and self-calibration apparatus and method for satellite communications among stations Download PDFInfo
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- CN106597473A CN106597473A CN201611174034.8A CN201611174034A CN106597473A CN 106597473 A CN106597473 A CN 106597473A CN 201611174034 A CN201611174034 A CN 201611174034A CN 106597473 A CN106597473 A CN 106597473A
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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
- G01S19/02—Details of the space or ground control segments
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
- H04B17/12—Monitoring; Testing of transmitters for calibration of transmit antennas, e.g. of the amplitude or phase
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service
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- Computer Networks & Wireless Communication (AREA)
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- Radar, Positioning & Navigation (AREA)
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- Aviation & Aerospace Engineering (AREA)
- Radio Relay Systems (AREA)
Abstract
The invention provides an antenna tracking and self-calibration apparatus and method for satellite communications among stations in order to target the deficiency of the antenna step-tracking mode used in the previous satellite communication field among satellite navigation system stations and the deficiency of conducting antenna pointing and calibrating by technicians in phases. Therefore, the apparatus and method of the invention directly utilize the navigated network information of the satellite to calculate the azimuth and pitch angle information of the satellite accurately and then send the information to a satellite antenna for tracking. Compared with the previous step-tracking mode, the case involving tracking failure will not repeat itself, therefore, increasing the reliability of the satellite communication antenna tracking among the satellite navigation system stations. In the tracking process, through the determination of the signal power received by the antenna to determine the pointing station of the antenna and according to the requirement to complete the self-calibration of the antenna pointing, it is possible to avoid the deficiency of calibration and maintenance by technicians going to the stations in person.
Description
Technical field
The invention belongs to satellite communication field between satellite navigation system station, is related to a kind of for antenna tracking and self-alignment
Apparatus and method.
Background technology
Satellite navigation system is generally divided into three parts：One is made up of satellite, realizes the space star that navigation signal is broadcast
Seating portion, two are made up of earth station, realize the ground fortune control part that system operation is controlled, and three are made up of terminal unit, are connect
Receive the customer equipment part that navigation signal realizes positioning.The operation control of system is realized in satellite navigation system ground fortune control part,
It is made up of master station, monitoring station and injection station.
Reliable data transfer is that ground fortune control part is realized between monitoring station and master station, between master station and injection station
The basis of system operation control function.It is the reliability for improving data transfer between station, except adopting in Chinese satellite positioning system
With outside ground network, while utilizing GEO (Geosynchronous Orbit, Geo-synchronous rail also by the way of satellite communication
Road) satellite (GEO satellite broadcasts navigation signal, belongs to space constellation part) carries out a data transfer of standing.Satellite communication between standing
Using satellite communication antena (hereinafter referred to as " defending exceedingly high line ") carry out the transmitting of radio frequency (RF, Radio Frequency) signal with
Receive.To ensure satellite communication signals quality between station, the antenna gain that exceedingly high line must keep higher is defended, this requires antenna electric
Axle (antenna beam central shaft) can be accurately aligned with telecommunication satellite.
During running, there is drift in GEO satellite, can be subject in antenna running on geo-stationary orbit
The impact of wind, sleet, temperature etc., these can make the electrical boresight of antenna deviate satellite, cause the decline of antenna gain, reduce communication matter
Amount, even results in communication disruption.For this reason, it may be necessary to designing antenna tracking, to guarantee in the dry of satellite drift and environmental condition
Disturb down, the electrical boresight of antenna can be to satelloid.
Satellite communication antena tracking adopts hill climb system, process mainly to have two steps between conventional station：One be into
Row antenna pointing calibration, is pointed to the electrical boresight of antenna reduced from the passback of aerial angle sensor and points to it with the actual electrical boresight of antenna
Between deviation：Using the prior satellite data for obtaining, azimuth and the angle of pitch of satellite are calculated, then control is defended exceedingly high line and sent out
Single-carrier signal is penetrated, and drives the electrical boresight of antenna to point to satellite roughly, next driven and defend exceedingly high line in orientation and pitch orientation point
Particles are not carried out, the satellite forwarding received to antenna using special power measuring instrument (such as audiofrequency spectrometer) in scanning process
The power of the single-carrier signal measure, and recording powers of laser beam it is maximum when aerial angle sensor passback the electrical boresight of antenna
Orientation and the angle of pitch, in the azimuth and the angle of pitch that drive antenna directional signal power to record when maximum after the end of scan, weight
After answering above scanning process for several times, the electrical boresight of antenna will accurately point to satellite, calculate satellite aximuth A now and angle of pitch E,
And the azimuth calibration of the electrical boresight of antenna for obtaining now aerial angle sensor is that A, the angle of pitch are calibrated to E, so as to complete day
Line pointing calibration；Two is to carry out antenna tracking：After antenna pointing calibration is completed, the electrical boresight of antenna has accurately pointed to satellite, this
When can control to defend data signal between exceedingly high line cell site and carry out a satellite communication of standing, in communication process, earth station leads in real time
Reception signal terminal measurement received signal power is crossed, when received signal power reduces, the azimuth axis of the electrical boresight of antenna is controlled and is bowed
Face upward axle carries out stepping toward the direction that received signal power increases, so as to ensure that the electrical boresight of antenna is accurately pointed to all the time in communication process
Satellite.What above-mentioned antenna hill climb system was utilized is that electrical boresight of antenna sensing satellite is more accurate, the bigger original of its received signal power
Reason, but in actual application, due to there is accidental signal power distortion situation, causing can be even during long-term follow
There is the situation of tracking failure in you, cause satellite communication between station to interrupt, and impact system is normally run, and needs personnel to carry on instrument
Stand maintenance, re-start calibration and track.In addition, defend the mechanically deform of slow accumulation in During Process of Long-term Operation of exceedingly high line also can
Allow aerial angle sensor return the electrical boresight of antenna point to incrementally increase with the deviation being actually pointed to, need stage by technology
Personnel carry out antenna pointing calibration work.
The content of the invention
In order to overcome the deficiencies in the prior art, the present invention to provide a kind of antenna tracking and self-correcting for satellite communication between station
Accurate device and method, can strengthen the reliability of satellite communication antena tracking between satellite navigation system station, while tracking
The self calibration of antenna is realized in journey.
The technical solution adopted for the present invention to solve the technical problems is：A kind of antenna tracking for satellite communication between station
With self-alignment device, including reception signal terminal and antenna tracking and self calibration processing unit, signal between described station between station
Receiving terminal receives transmission signal between the station that satellite is forwarded, at output received signal power value information to antenna tracking and self calibration
Reason unit；Described antenna tracking includes satellite position calculation module and antenna tracking and self-correcting quasi-mode with self calibration processing unit
Block, satellite position calculation module calculates satellite position, output satellite according to the satellite navigation message data that receiver is sended over
Azimuth and the angle of pitch are to antenna tracking and self calibration module；Antenna tracking receives satellite position calculation module with self calibration module
The satellite aximuth and the angle of pitch of transmission, the received signal power information that reception signal terminal sends between receiving station, reception antenna
The electrical boresight of antenna directional information returned by aerial angle sensor that control unit sends, including azimuth and the angle of pitch, send
Satellite position to antenna control unit is tracked, and judges that antenna points to state according to received signal power information, according to antenna
Sensing state sends antenna sensing self-correcting calibration information to antenna control unit.
The present invention also provides a kind of antenna tracking for satellite communication between station and self-alignment method, including following step
Suddenly：
(1) receive all the way signal from defending logical antenna body and separate, be connected to reception signal terminal between station；
(2) receiver receives satellite navigation signals, and satellite navigation message information is sent to antenna tracking and self calibration
Reason unit；
(3) antenna control unit by the electrical boresight of antenna directional information that aerial angle sensor is returned send in real time to antenna with
Track and self calibration processing unit, described electrical boresight of antenna directional information includes azimuth and the angle of pitch；
(4) satellite position calculation module calculates in real time current satellite position information according to satellite navigation message information,
Including azimuth A and angle of pitch E, antenna tracking and self calibration module are sent to；
(5) satellite position information of reception is sent to antenna control unit by antenna tracking with self calibration module, drives day
Line tracks to the position, while antenna tracking and self calibration module real-time reception are by connecing that a reception signal terminal of standing is sended over
Receive signal power；When the electrical boresight of antenna azimuth that antenna tracks to the passback of aerial angle sensor is A and the angle of pitch is E, note
Under received signal power P now；
(6) the received signal power P and power threshold P being previously set is comparedTIf P is less than PT, illustrate now antenna angle
The electrical boresight of antenna of degree sensor passback is pointed to and the deviation between the electrical boresight of antenna sensing of reality is larger, carries out the day of step (7)
Line pointing calibration, if conversely, P is more than or equal to PT, illustrate electrical boresight of antenna sensing and the reality of now aerial angle sensor passback
The electrical boresight of antenna point between deviation it is less, return to step (5) proceed tracking；
(7) antenna tracking is defended exceedingly high line and is distinguished in the range of orientation and pitch orientation set angle with self calibration module drive
Be scanned, and record received signal power value it is maximum when aerial angle sensor passback the electrical boresight of antenna azimuth A' and bow
Elevation angle E', then sends self-correcting calibration information A' and E' to antenna control unit, allows antenna control unit to sense aerial angle
The azimuth A of device is calibrated to A', angle of pitch E and is calibrated to E', complete antenna point to self calibration, be then back to step (5) continue into
Line trace.
The invention has the beneficial effects as follows：
(1) present invention directly calculates in real time the accurate azimuth of satellite and the angle of pitch using the navigation message information of satellite
Information, is then sent to defend exceedingly high line and is tracked, and than conventional hill climb system, the feelings for tracking failure will not again occurs
Condition, improves the reliability of antenna tracking.
(2) present invention completes the self calibration work of antenna sensing, it is to avoid conventional need while antenna tracking is carried out
The upper station of personnel is wanted to carry out calibrating the defect of maintenance.
Description of the drawings
Fig. 1 is the overall structure block diagram of apparatus of the present invention；
Fig. 2 is antenna tracking and self calibration processing unit structured flowchart in apparatus of the present invention；
Fig. 3 is the transmission relation figure of apparatus of the present invention；
Fig. 4 is the handling process schematic diagram of the inventive method.
Specific embodiment
A kind of antenna tracking and self-alignment device for satellite communication between station that the present invention is provided, including：
Reception signal terminal between standing：For transmission signal between the station for receiving satellite forwarding, output received signal power value letter
Cease to antenna tracking and processed with self calibration processing unit；
Antenna tracking and self calibration processing unit：For collect received signal power value information, satellite navigation message information,
The information such as electrical boresight of antenna directional information of aerial angle sensor passback, export after treatment antenna tracking control information and from
Calibration information is to antenna controller.
Wherein, antenna tracking includes with self calibration processing unit：
Satellite position calculation module：Satellite navigation message data for being sended over according to receiver calculate satellite position
(including azimuth and the angle of pitch), output satellite azimuth and the angle of pitch to antenna tracking module and antenna point to self-correcting quasi-mode
Block；
Antenna tracking and self calibration module：For receiving the satellite position of satellite position calculation module transmission (including orientation
Angle and the angle of pitch), the received signal power information that reception signal terminal sends between receiving station, what reception antenna control unit sent
The electrical boresight of antenna directional information (including azimuth and the angle of pitch) returned by aerial angle sensor, transmission satellite position (including
Azimuth and the angle of pitch) it is tracked to antenna control unit, judge that antenna points to state, root according to received signal power information
State is pointed to according to antenna antenna sensing self-correcting calibration information to be sent to antenna control unit.
For achieving the above object, the present invention is provided a kind of antenna tracking for satellite communication between station and self-alignment side
Method, comprises the following steps：
(1) receive all the way signal from defending logical antenna body and separate, be connected to reception signal terminal between station；
(2) receiver receives satellite navigation signals, satellite navigation message information is sent to antenna by serial ports or network
Tracking and self calibration processing unit；
(3) electrical boresight of antenna directional information that antenna control unit is returned aerial angle sensor by serial ports or network
(including azimuth and the angle of pitch) is sent in real time to antenna tracking and self calibration processing unit；
(4) satellite position calculation module calculates in real time current satellite position information according to satellite navigation message information
(including azimuth A and angle of pitch E), and it is sent to antenna tracking and self calibration module；
(5) antenna tracking sends the satellite position information for receiving with self calibration module (including azimuth A and angle of pitch E)
To antenna control unit, drive antenna tracking to the position, at the same antenna tracking and self calibration module real-time reception by standing between believe
The received signal power that number receiving terminal is sended over；When antenna tracks to the electrical boresight of antenna orientation of aerial angle sensor passback
When angle is A and the angle of pitch is E, received signal power P now is write down；
(6) the received signal power P and power threshold P being previously set is comparedT(PTAccording to actual received signal power
Statistical data determines that respective antenna points to the received signal power when order of accuarcy of satellite disclosure satisfy that communicating requirement), if P
Less than PT, illustrate the deviation between the electrical boresight of antenna sensing of now aerial angle sensor passback and the electrical boresight of antenna sensing of reality
It is larger, the antenna pointing calibration of step (7) need to be carried out, if conversely, P is more than or equal to PT, illustrate now aerial angle sensor
The electrical boresight of antenna of passback is pointed to and the deviation between the electrical boresight of antenna sensing of reality is less, and the antenna of execution step (7) is not pointed to
Calibration, returns execution step (5) and proceeds tracking；
(7) antenna tracking defends exceedingly high line (model in the range of orientation and pitch orientation certain angle with self calibration module drive
Enclose excursion setting of the big I according to the satellite orbit satellite aximuth that causes of drift and the angle of pitch) carry out come flyback respectively
The azimuth A' and the angle of pitch of the electrical boresight of antenna of aerial angle sensor passback when retouching, and recording received signal power value maximum
E', then sends self-correcting calibration information A' and E' to antenna control unit, allows antenna control unit by aerial angle sensor
Azimuth A is calibrated to A', angle of pitch E and is calibrated to E', complete antenna point to self calibration, be then back to execution step (5) continue into
Line trace.
With reference to the accompanying drawings and examples the present invention is further described, and the present invention includes but are not limited to following enforcements
Example.
With reference to Fig. 1, between satellite navigation system station according to the present invention satellite communication include satellite A, defend logical antenna system B,
Antenna tracking and self-calibrating device C and receiver D.Wherein, satellite A is while navigation signal is broadcast, and forwards by defending exceedingly high line
Transmission signal between the station of transmitting.Logical antenna system B is defended including antenna body, driver element and control unit, between being stood
The transmitting of transmission signal and reception, its control unit enters row data communication, antenna body point with antenna tracking with self-calibrating device C
Go out and receive all the way signal, antenna tracking and self-calibrating device C are connected to by radio-frequency cable.Receiver D receives what satellite A broadcast
Navigation signal, the navigation message information for demodulating satellite is sent to antenna tracking and self-calibrating device C.Apparatus of the present invention C include：
Reception signal terminal C1 and antenna tracking and self calibration processing unit C2 between standing.Reception signal terminal C1 is obtained from exceedingly high line is defended between standing
Reception signal is taken, received signal power is measured and power value information is sent to into antenna tracking and self calibration processing unit C2.
With reference to Fig. 2, antenna tracking includes with self calibration processing unit C2：Satellite position calculation module C21, antenna tracking with
Self calibration module C22.Satellite position calculation module C21 receives the satellite navigation message information that receiver D sends, and calculates satellite
Position (including azimuth and the angle of pitch), antenna tracking realizes that antenna tracking and antenna point to self calibration with self calibration module C22.
With reference to Fig. 3, the transmission relation of apparatus of the present invention is as follows：
Transmission signal between station 1 is transmitted to and defends logical antenna system B by satellite A, navigation signal 2 is broadcast and gives receiver D.Wei Tong
Antenna system B is separated and receive all the way signal 3 to reception signal terminal C1 between station, the electrical boresight of antenna that aerial angle sensor is returned
Azimuth and pitching angle information 4 are sent to antenna tracking and self calibration module C22.Receiver D receives satellite navigation signals, demodulation
Go out satellite navigation message information 5 to send to satellite position calculation module C21.Satellite position calculation module C21 is according to satellite navigation
Textual information calculates satellite position information 6 (including azimuth and the angle of pitch), sends to antenna tracking and sensing self-correcting quasi-mode
Block C22.The reception signal that the transmission of reception signal terminal C1 reception antennas main body comes between standing, measures and will be connect after received signal power
Collection of letters power value information 7 is sent to antenna tracking and self calibration module C22.Antenna tracking module and self calibration module C22 will
The antenna position information 8 (including azimuth and the angle of pitch) for needing tracking is sent to and defends logical antenna system B and be tracked, according to work(
Rate value information 7 judges that antenna points to state, antenna is pointed to into self-correcting calibration information 9 when needing to be calibrated and is sent to defending exceedingly high line
System B carries out antenna pointing calibration.
With reference to Fig. 4, the present invention comprises the steps for the antenna tracking and self-alignment method of satellite communication between station：
Step 1, transmission signal between receiving station
Defend logical antenna body to separate transmission signal between receiving station all the way, transmitted to signal between station by radio-frequency cable and received
Terminal signaling input port；
Step 2, receives satellite navigation message information
Receiver receives satellite navigation signals, satellite navigation message information is sent to antenna tracking by serial ports or network
With self calibration processing unit；
Step 3, real-time reception electrical boresight of antenna directional information
Electrical boresight of antenna directional information that antenna control unit is returned aerial angle sensor by serial ports or network (including
Azimuth and the angle of pitch) send in real time to antenna tracking and self calibration processing unit；
Step 4, calculates satellite position information
Satellite position calculation module calculates in real time current satellite position information (bag according to satellite navigation message information
Include azimuth A and angle of pitch E), and it is sent to antenna tracking and self calibration module；
Step 5, carries out antenna tracking, tracer signal power
Antenna tracking is sent to the satellite position information for receiving with self calibration module (including azimuth A and angle of pitch E)
Antenna control unit, drives antenna tracking to the position, while antenna tracking and self calibration module real-time reception are by a signal of standing
The received signal power that receiving terminal is sended over；When antenna tracks to the electrical boresight of antenna azimuth of aerial angle sensor passback
When for A and the angle of pitch being E, received signal power P now is write down；
Step 6, judges that antenna points to state
The relatively received signal power P and power threshold P being previously setT(PTAccording to the statistics of actual received signal power
Data determine that respective antenna points to the received signal power when order of accuarcy of satellite disclosure satisfy that communicating requirement), if P is less than
PT, illustrate the passback of now aerial angle sensor the electrical boresight of antenna point to and reality the electrical boresight of antenna point between deviation compared with
Greatly, the antenna pointing calibration of step 7 need to be carried out, if conversely, P is more than or equal to PT, illustrate now aerial angle sensor passback
The electrical boresight of antenna point to and reality the electrical boresight of antenna point between deviation it is less, the antenna pointing calibration of execution step 7, does not return
Return execution step 5 and proceed antenna tracking；
Step 7, carries out antenna and points to self calibration
The azimuth range of relative certain earth station caused because of orbital drift with certain GEO satellite is about Δ A, the angle of pitch
Excursion is about as a example by Δ E, and antenna tracking drives first with self calibration module and defends exceedingly high line in an azimutal direction in A ± Δs
The electrical boresight of antenna of aerial angle sensor passback when being scanned back and forth in the range of A, and recording received signal power value maximum
Azimuth A', driving defends exceedingly high line and tracks to azimuth A', then drives and defends exceedingly high line on pitching angular direction in E ± Δ E models
The pitching of the electrical boresight of antenna of aerial angle sensor passback when being scanned back and forth in enclosing, and recording received signal power value maximum
Angle E'.Now, the deviation between azimuth A', angle of pitch E' and step 5 are calculated satellite aximuth A, angle of pitch E, instead
The electrical boresight of antenna that aerial angle sensor is returned has been answered to point to and the deviation between the electrical boresight of antenna sensing of reality, azimuth A',
Angle of pitch E' can be used as antenna self calibration information.Self-correcting calibration information A' and E' are sent to antenna control unit, a day line traffic control is allowed
The azimuth A of aerial angle sensor is calibrated to A', angle of pitch E and is calibrated to E' by unit, is completed antenna and is pointed to self calibration, then
Return execution step 5 and proceed antenna tracking.
Claims (2)
1. a kind of antenna tracking and self-alignment device for satellite communication between station, including reception signal terminal and antenna between station
Tracking and self calibration processing unit, it is characterised in that：Reception signal terminal received and transmitted between the station that satellite is forwarded between described station
Signal, output received signal power value information to antenna tracking and self calibration processing unit；Described antenna tracking and self calibration
Processing unit includes satellite position calculation module and antenna tracking and self calibration module, and satellite position calculation module is according to receiver
The satellite navigation message data for sending over calculate satellite position, and output satellite azimuth and the angle of pitch are to antenna tracking and self-correcting
Quasi-mode block；Antenna tracking receives satellite aximuth and the angle of pitch that satellite position calculation module sends with self calibration module, receives
Between standing reception signal terminal send received signal power information, reception antenna control unit send by aerial angle sensor
The electrical boresight of antenna directional information of passback, including azimuth and the angle of pitch, send satellite position and are tracked to antenna control unit,
Judge that antenna points to state according to received signal power information, state is pointed to according to antenna antenna is pointed to into the transmission of self-correcting calibration information
To antenna control unit.
2. a kind of antenna tracking and method for self-calibrating for satellite communication between station for utilizing claim 1 described device, it is special
Levy is to comprise the steps：
(1) receive all the way signal from defending logical antenna body and separate, be connected to reception signal terminal between station；
(2) receiver receives satellite navigation signals, satellite navigation message information is sent to antenna tracking and self calibration and processes single
Unit；
(3) antenna control unit by the electrical boresight of antenna directional information that aerial angle sensor is returned send in real time to antenna tracking with
Self calibration processing unit, described electrical boresight of antenna directional information includes azimuth and the angle of pitch；
(4) satellite position calculation module calculates in real time current satellite position information according to satellite navigation message information, including
Azimuth A and angle of pitch E, is sent to antenna tracking and self calibration module；
(5) satellite position information of reception is sent to antenna control unit by antenna tracking and self calibration module, drive antenna with
Track is to the position, while antenna tracking and self calibration module real-time reception are believed by the reception that a reception signal terminal of standing is sended over
Number power；When the electrical boresight of antenna azimuth that antenna tracks to the passback of aerial angle sensor is A and the angle of pitch is E, this is write down
When received signal power P；
(6) the received signal power P and power threshold P being previously set is comparedTIf P is less than PT, illustrate that now aerial angle is passed
The electrical boresight of antenna of sensor passback is pointed to and the deviation between the electrical boresight of antenna sensing of reality is larger, and the antenna for carrying out step (7) refers to
To calibration, if conversely, P is more than or equal to PT, illustrate the electrical boresight of antenna sensing of now aerial angle sensor passback and actual day
Deviation between line electric axis is pointed to is less, and return to step (5) proceeds tracking；
(7) antenna tracking is defended exceedingly high line and is carried out respectively in the range of orientation and pitch orientation set angle with self calibration module drive
The azimuth A' and the angle of pitch of the electrical boresight of antenna of aerial angle sensor passback when scanning, and recording received signal power value maximum
E', then sends self-correcting calibration information A' and E' to antenna control unit, allows antenna control unit by aerial angle sensor
Azimuth A is calibrated to A', angle of pitch E and is calibrated to E', complete antenna point to self calibration, be then back to step (5) proceed with
Track.
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| CN201510969120 | 2015-12-22 | ||
| CN2015109691207 | 2015-12-22 |
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| CN110677189A (en) * | 2019-10-09 | 2020-01-10 | 四川灵通电讯有限公司 | Low-orbit satellite multi-beam detection device and application method |
| CN111512569A (en) * | 2017-08-30 | 2020-08-07 | 赛峰数据系统公司 | Method and device for estimating the skew of an antenna and method and device for tracking the orientation of an antenna implementing such a method and device based on harmonic analysis |
| CN111682894A (en) * | 2020-06-09 | 2020-09-18 | 中国电子科技集团公司第五十四研究所 | Ground receiving equipment and emergency tracking receiving method for geostationary orbit satellite |
| CN112118040A (en) * | 2020-08-06 | 2020-12-22 | 航天科工空间工程发展有限公司 | Method for connecting different-rail inter-satellite links |
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| CN116107348A (en) * | 2023-04-14 | 2023-05-12 | 国网冀北电力有限公司 | Method and device for tracking low-orbit satellite by unmanned aerial vehicle antenna |
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| CN113532428B (en) * | 2020-04-14 | 2024-03-01 | 中国电信股份有限公司 | Data processing method, device, communication-in-motion terminal and computer readable storage medium |
| CN111682894A (en) * | 2020-06-09 | 2020-09-18 | 中国电子科技集团公司第五十四研究所 | Ground receiving equipment and emergency tracking receiving method for geostationary orbit satellite |
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