CN100571067C - Intelligent portable satellite communications earth station and control method thereof - Google Patents
Intelligent portable satellite communications earth station and control method thereof Download PDFInfo
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- CN100571067C CN100571067C CNB2006101272723A CN200610127272A CN100571067C CN 100571067 C CN100571067 C CN 100571067C CN B2006101272723 A CNB2006101272723 A CN B2006101272723A CN 200610127272 A CN200610127272 A CN 200610127272A CN 100571067 C CN100571067 C CN 100571067C
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B7/15—Active relay systems
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Abstract
The invention discloses a kind of intelligent portable satellite communications earth station is made up of antenna case and termination rack.Comprise: parts such as antenna reflective face, feed and polarization adjustment device, orientation/pitching adjusting device, antenna controller, L frequency range satellite beacon track receiver, GPS receiver, satellite communication modulator-demodulator, signal codec device.Antenna controller is determined the initial angle of pitch of antenna geographic location and antenna reflective face by dipmeter and GPS receiver, the control polarization adjustment device makes the polarizing angle coupling of the polarizing angle and the satellite repeater of antenna, the satellite beacon signals of device such as satellite communication modulator-demodulator, signal codec device transmission L frequency range satellite beacon track receiver output communicates the signal transmission then.Support speech, data, audio-video signal, can realize remote data transmission, scene of the accident emergency communication and live video relay etc.; Volume is little, in light weight, uses simply, and expansion and collection are applicable to the field work environment fast.
Description
Technical field:
The present invention relates to the control method of a kind of satellite communication system device and this system of control, be specifically related to a kind of portable portable, bear extra small bore satellite communication earth station and its control method of carrying.
Background technology:
Existing terrestrial cellular mobile communication system is showing following deficiency aspect its class of business, the coverage:
1, its base station is to be based upon the relative congested area of population basically, in zones such as professional rareness, remote districts, island, high mountains, can be because a variety of causes, often can not build a station, that is to say, in such zone, existing terrestrial cellular mobile communication system be can not be completed its mobile communication business.
2,, can't provide communication service as big data quantity such as image, video and two-forty because existing mobile communications system resource and technology limitation.
3, under disaster scenario, existing ground communication net often receives damage easily, and is difficult to fast quick-recovery.
On the other hand, utilize the satellite mobile communication of geostationary orbit communication satellite to have broad covered area, advantage that transmission capacity is big, lack or not enough area at the ground communication net, satellite mobile communication is present unique means of communication that two-forty, jumbo multimedia communication service can be provided rapidly.
But common satellite communication earth station is the complicated communication equipment of a cover, and the huge heaviness of its equipment is carried difficulty, complicated operation especially, and under emergent application conditions, communication service usually takes place also not to be had open-mindedly, just must withdraw the embarrassing incident at scene.Perhaps, palpus set up open-minded in advance in advance at the scene, like this, has also just lost the meaning as emergency communication equipment.
Based on above-mentioned condition, for realizing utilizing the geostationary orbit communication satellite to carry out emergency service, be problem demanding prompt solution to the improvement of satellite communication earth station.The technical background of this case that Here it is invention.
Summary of the invention:
Technical problem to be solved by this invention provides the method for a kind of intelligent portable satellite communications earth station and this system of control.One of purpose that the invention provides this intelligent portable satellite communications earth station be make equipment huge, be difficult to carry, the satellite communication earth station of complicated operation becomes device miniaturization, is easy to carry, fast reaction, open communication service fast, collect and withdraw the scene fast, reach operative intelligenceization, make things convenient for the layman to operate.
Another purpose that the invention provides this intelligent portable satellite communications earth station is to open multimedia communication services such as the jumbo speech of two-forty, data, audio frequency and video and wide area network access rapidly in ground communication net shortage or not enough area.
For solving the problems of the technologies described above, realize above-mentioned purpose, technical scheme provided by the present invention is:
This intelligent portable satellite communications earth station is made up of antenna case and two parts of termination rack.
Comprise in antenna case and the termination rack: antenna reflective face, orientation/pitching type antenna pedestal, feed and polarization adjustment device, orientation/pitching adjusting device, low noise down-conversion assembly (LNB), up-conversion power amplifier assembly (BUC), antenna controller, L frequency range satellite beacon track receiver, L frequency range directional coupler, the GPS receiver, dipmeter, the right limit switch, the left limit switch, lower position switch, Switching Power Supply, the satellite communication modulator-demodulator, the signal codec device, router, Ethernet switch.
Antenna reflective face is arranged on orientation/pitching type antenna pedestal, feed and polarization adjustment device are arranged on the antenna reflective face, LNB is arranged on the feed, orientation/pitching adjusting device is arranged in the antenna pedestal, and orientation/pitching adjusting device comprises azimuth-drive motor, orientation decelerator, azimuth-drive motor driver, pitching motor, pitching decelerator, pitching motor driver, inclination sensor, orientation right limit switch, orientation left limit switch, pitching lower position switch.This antenna reflective face is set to polylith, is combined into an antenna reflective face by the antenna reflective face button.
Described orientation/pitching type antenna pedestal, antenna reflective face, LNB, BUC, antenna controller, L frequency range satellite beacon track receiver, L frequency range directional coupler, GPS receiver, Switching Power Supply are collected in the described antenna case;
Other outer the device in being collected in antenna case devices are collected in the described termination rack.
Antenna controller is determined the initial angle of pitch of antenna geographic location and antenna reflective face according to the location longitude of used communication satellite, to calculate required polarizing angle of antenna and antenna elevation angle by dipmeter and GPS receiver.Antenna controller is according to these parameters, the control polarization adjustment device makes the polarizing angle coupling of the polarizing angle and the satellite repeater of antenna, then, according to certain automatic control algorithm drive motors, control azimuth/pitching adjusting device makes antenna bearingt/pitching search, in search procedure, in a single day antenna receives satellite-signal, is divided into two-way by the L-band directional coupler after the LNB frequency reducing is amplified, and one road signal is exported to L frequency range satellite beacon track receiver.Another road signal is delivered to the satellite communication modulator-demodulator.This road of delivering to the satellite communication modulator-demodulator is called the receiving branch circuit of satellite communication earth station.
L frequency range satellite beacon track receiver is finished amplification, filtering and the detection to satellite beacon signals, and the flat A/D conversion card to antenna controller of output DC is for control algolithm provides the signal level indication.
In case the satellite beacon signals level of L frequency range satellite beacon track receiver output surpasses the threshold value that sets, antenna just enters the stepping tracking mode, by the stepping tracking strategy, makes antenna receive maximum signal level, that is, and and the antenna beam satellite.Then, when signal greater than certain thresholding, antenna direction is in hold mode; When signal less than thresholding, antenna enters the stepping tracking mode automatically, therefore, antenna direction is all the time to satelloid, keeps best receptivity.
The receiving branch circuit of satellite communication earth station is described below: one tunnel satellite-signal that receives is given router, router access network based on ethernet switch after the satellite communication modulator-demodulator carries out down-conversion, demodulation, by the signal codec device, obtain user's speech, data, audio-video signal then.
The transmitting branch of satellite communication earth station is described below: user's speech, data, audio-video signal are by behind the signal codec device, the access network based on ethernet switch, by delivering to the satellite communication modulator-demodulator behind the router, after modulation, up-conversion, send into BUC, after the BUC frequency conversion is amplified, give feed, be emitted to satellite repeater by antenna reflective face then.
When using intelligent portable satellite communications earth station, open antenna case and termination rack earlier, connect various cables, energized was at 3 fens built-in upright satellite communication links of clock time.After communication finished, antenna collection case and termination rack were closed in outage, collection, just can be portable in less than 2 minutes time or the equipment of bearing leave the scene.
A kind of control method of this intelligent portable satellite communications earth station, it is characterized in that: communication module, motor drive module and display module six big control modules that module, AD sampling module, dipmeter and GPS receiver module, supervisory control comuter are set by timer are controlled the associated components of this earth station, finish four big antenna control models such as antenna initialization, the search of open loop satellite-signal, the tracking of closed loop satellite-signal, antenna collection, concrete control method is as follows:
(1) antenna initialization
The antenna initialize mode is finished polarization and is adjusted and antenna pitching adjustment.
After the antenna initialization begins, antenna controller is read the Satellite Tracking parameter that stores in the chip, read the initial pitching data of the represented antenna of dipmeter, read the geographical longitude and latitude of the represented earth station of GPs receiver, by calculating, obtain antenna polarization angle and antenna elevation angle, the control polarization adjustment device is finished the antenna polarization adjustment, control pitching adjusting device is finished antenna pitching adjustment.Enter open loop satellite-signal search pattern.
(2) open loop satellite-signal search
Open loop satellite-signal search pattern is finished antenna tentatively catching satellite-signal.
Antenna controller control azimuth/pitching adjusting device, make the orientation of antenna reflective face, pitching is searched for by mesh shape, in search procedure, constantly read the dipmeter signal, and constantly compare with last dipmeter signal, if find that difference is bigger, then start pitching and adjust program, the pitching value is adjusted, make it reach the point of theory value again, simultaneously, in search procedure, constantly read the satellite beacon signals intensity level data of L frequency range beacon receiver output by the A/D sampling module, constantly write down and refresh this level data, the antenna reflective face orientation that minimum and maximum down satellite beacon signals intensity level data of the memory record of antenna controller and maximum satellite beacon signals intensity level data are taken place, the angle of pitch.
If the threshold value that the maximum satellite beacon signals intensity level data of record and the difference of minimum satellite vehicle beacon signal intensity level data set greater than Control Parameter, antenna controller control azimuth/pitching adjusting device, make the orientation/pitching of antenna reflective face reach antenna reflective face orientation, the angle of pitch that maximum satellite beacon signals intensity level data take place, finish the search of open loop satellite-signal, enter closed loop satellite-signal tracing mode.
(3) the closed loop satellite-signal is followed the tracks of
Closed loop satellite-signal tracing mode finish antenna to satellite-signal from motion tracking, employing be hill climb system.
Antenna controller control azimuth/pitching adjusting device, the antenna reflective face azimuth pitch is adjusted among a small circle, whenever make a move, all to read the satellite beacon signals intensity level data of L frequency range beacon receiver output by the A/D sampling module, and, compare present receiving machine output level data and preceding output level data, if this output is greater than the output of last time, so, motor then makes a move on identical direction again, if this output level less than the output level of last time, then will change the direction of search, the motor that antenna controller drives another direction makes a move, follow the tracks of so length by length, receive maximum signal level until antenna, that is, and the antenna beam satellite.Then, when signal greater than certain thresholding, antenna direction is in hold mode; When signal less than thresholding, antenna enters hill climb system automatically, therefore, antenna direction is all the time to satelloid, keeps best receptivity.
(4) antenna collection
At first poled waveguide is reset to a suitable favorite places, then the orientation is moved right to spacing place, find the datum mark in orientation.When the orientation behind right limit, change its direction of motion, make stepping motor to the certain step number of left movement to favorite places; Drive the pitching stepping motor then and move downward certain step number, arrive the pitching favorite places, last, microprocessor starts bolt down procedure, shuts down, and the antenna collection finishes.
Owing to adopted technique scheme, the intelligent portable satellite communications earth station that this case provides forms satellite communication network by the link with the geostationary orbit communication satellite, supporting multimedia communication services such as speech, data, audio frequency and video and wide area network access, is the excellent means that realizes that remote data transmission, scene of the accident emergency communication and live video relay etc. are professional.Volume is little, in light weight, uses simply, and expansion and collection to star and tracking, are applicable to the field work environment fast automatically.
Figure of description:
Fig. 1 is the perspective view of portable satellite communications provided by the invention ground reception/emission system device;
Fig. 2 is that portable satellite communications provided by the invention ground reception/emission system apparatus system constitutes block diagram;
Fig. 3 is a portable satellite communications provided by the invention ground reception/emission system device signal transfer structure schematic diagram;
Fig. 4 is a kind of method of controlling portable satellite communications ground reception/emission system device provided by the invention;
Fig. 5 is the method for a kind of control antenna provided by the invention;
Fig. 6 is the theory diagram of signal receiving device provided by the invention;
Fig. 7 is the circuit diagram of signal receiving device provided by the invention:
Fig. 8 is that antenna controller provided by the invention transmits the signal structure block diagram;
Fig. 9 is a kind of structural representation of controlling the antenna of portable satellite communications ground reception/emission system device provided by the invention;
Embodiment:
As shown in Figure 1: this intelligent portable satellite communications earth station is made up of antenna case 1 and 2 two parts of termination rack.
As Fig. 2, shown in Figure 3: as described in be provided with by antenna 11, feed source device 12, polarization adjustment device 13, orientation/pitching adjusting device 14, low noise down-conversion assembly (LNB) 15, up-conversion power amplifier assembly (BuC) 16 in the antenna case 1 and form;
Be provided with antenna controller 21, satellite communication receiving device 22, power supply 23, signal codec device 24, GPS receiver 25 compositions in the termination rack 2:
Described polarization adjustment device 13 comprises polarization angular transducer 131 and polarization motor 132:
Described orientation/pitching adjusting device 14 comprises dipmeter 141 and pitching motor 142, azimuth-drive motor 143, orientation decelerator 144, azimuth-drive motor driver 145, pitching decelerator 146, pitching motor driver 147, orientation right limit switch 149, orientation left limit switch 150, pitching lower position switch 151; Described azimuth-drive motor driver, orientation decelerator and orientation right limit switch, orientation left limit switch drive and limit this azimuth-drive motor of control respectively; Described pitching motor driver, pitching decelerator and pitching lower position switch drive and limit this pitching motor of control respectively.
Described satellite communication apparatus 22 comprises L-band beacon receiver 221, L frequency range directional coupler 224, router two 25, satellite communication modulator-demodulator 223 and signal codec device 24: for more clearly embodying the relation between each parts in this intelligent portable satellite communications earth station that this case provides and controlling the concrete advantage of the control method of this device, this case elaborates to the present invention below in conjunction with specific embodiments:
Signal after handling in the signal codec device 24 is delivered to the router two 25 satellite communication modulator-demodulators that constitute in this satellite communication apparatus 22, and by up-conversion power amplifier assembly device (BUC) 16, transfers the signal to the feed source device 12; The formation of the signal input apparatus 241 in this case as shown in Figure 6 and Figure 7, owing to be the circuit that inventor oneself builds, and the function of its circuit is provided, those of ordinary skill in the art can realize this circuit according to the description of this circuit and circuit function, no longer describes in detail in this this case.
The feedback signal that described low noise down-conversion assembly (LNB) 15 receives feed source device 12 feeds back to antenna controller 21 by L-band beacon receiver 223 in the described satellite communication apparatus 22 and L frequency range directional coupler 224; Polarization angular transducer 131 in this polarization adjustment device 13 also receives the feedback signal after described feed source device 12 is handled simultaneously, and transfers the signal to the antenna controller 21: this antenna controller 21 is adjusted the polarised direction of this antenna by polarization motor 132.
Described antenna controller 21 received signals are also instructed the azimuth pitch motor, adjust the angle of antenna, and the relevant information of this antenna 11 feeds back to this antenna controller 21 by dipmeter: described antenna controller 21 receives the framing signal of GPS receivers 25; By the framing signal of this GPS receiver 25, this antenna controller is adjusted the attitude of antenna 11, treat system stability after, antenna controller 21 and signal codec device 24 received signal input units 241 receive external signals, enter system's operation.And realize that antenna and described feed source device carry out signal and transmit.In sum, the signal transferring structure schematic diagram of the antenna controller that provides of this case as shown in Figure 8.
For realizing above-mentioned signal transmission, realize the automatic control of system and device in this case, this case provides a kind of control method simultaneously, and the logic flow of this method is done following detailed description below in conjunction with Fig. 4 with its logic flow as shown in Figure 4:
Communication module, motor drive module and display module six big control modules that module, AD sampling module, dipmeter and GPS receiver module, supervisory control comuter are set by timer are controlled the associated components of this earth station, and its control method is:
(1), reads the position coordinate data of this intelligent portable satellite communications earth station and the orientation attitude signal F1 of this antenna by dipmeter and GPS receiver module;
(2), timer is provided with the search time of module communication signal and the method selection F2 of communication pattern;
(3), select communication pattern after, the state of the communication module monitoring communications signal of supervisory control comuter is adjusted the orientation adjusting device of antenna, the AD sampling module carries out systematic sampling, reads the antenna pitching data F3 that dipmeter obtains once more;
(4), antenna controller receives and by calculating these pitching data, motor drive module instruction pitching motor is adjusted the pitching F4 of antenna;
(5), once more read the antenna pitching data that dipmeter obtains, judge that whether suitable the pitching of dipmeter is; Repeat above-mentioned (1) one (5) step, collect F5 till the signal of peak-peak up to the AD sampling module;
(6), after antenna reaches system's set quota, the signal codec device then carries out signal input and signal processing, the AD sampling module carries out data acquisition to system, and this earth station carries out normal signal reception and emission, and the display screen display module is at demonstration relevant information in service F6 one F9 of system.
Because this case provides a kind of intelligent portable satellite communications earth station, its main feature is portable.Owing to will realize portablely, the technology contents that this case technique scheme is relevant with it is disclosed, and is embodied in two integral body, i.e. antenna case and termination rack, and wherein of paramount importance is described antenna.It is set to comprise reflector antenna 111, antenna pedestal 112 and transmission device 113 to described antenna 11 in this case; Described reflector antenna 111 is set to 4 parts, and each part is connected by sky cableties 114.For realizing that it can adjust attitude automatically, in hardware components, be provided with this transmission device 113 in this case, realize its automatic control by transmission device, the logic flow of its concrete control method as shown in Figure 5, control structure is as shown in Figure 9.Below in conjunction with Fig. 5 and Fig. 9 the control method of this antenna is made following detailed description:
At first set the orientation direction of motion of antenna by antenna controller 21, judge whether this orientation motion arrives right limit, if also do not arrive right limit, then need to arrive right limit, carry out the elevating movement direction then and arrive setup parameter, if do not reach setup parameter, then feedback signal, system carries out this program once more up to finishing setup parameter, and reaches the optimum state that receives/transmit.Because this control method that this case provides is fuzzy oscillation control method, so its implementation procedure is simple and practical.More increased its practicality.According to said apparatus and control method, the intelligent portable satellite communications earth station that this case provides obtains following parameter in process of the test:
1, indicators of overall performance
| Service time (the antenna alignment satellite of unpacking) | ≤ 3 minutes |
| The collection time (finishing satellite communication finishes to collection) | ≤ 2 minutes |
| Communication service | Voice, data, audio frequency and video and wide area network insert |
| |
15 years |
| Power supply | Civil power: AC 220V ± 15%, 50Hz ± 15% |
| Power consumption | Antenna case part :≤260W termination rack part :≤100W |
| Weight | Antenna case part :≤30Kg termination rack part :≤20Kg |
| Volume | Antenna case :≤650 * 400 * 300mm termination rack :≤500 * 400 * 300mm |
2, antenna electric performance
1, antenna mechanical performance
4, control and tracking performance
5, environmental condition
Intellectualized operation and portable be the emphasis of this case invention, can make its portable main reason is the subminaturization of antenna, and has realized the antenna structure of easy assembly and disassembly.The telecom technology that we have adopted geometric optics and physical optics to combine has not only realized subminaturization, portable version, simultaneously, has realized the requirement on electric performance of high-gain, low noise, low sidelobe level and high cross polarization isolation.The bore of the extra small aperture antenna that we invent is oval, and transverse is 0.9 meter, and ellipse short shaft is 0.6 meter, and it is four that the entire antenna reflecting surface is divided into, and wherein a slice is connected with antenna pedestal, and its excess-three sheet can be installed and collect easily.
Intellectualized operation and portable be the emphasis of this case, the main reason that can make its intellectualized operation is intelligent antenna control technology, intelligent antenna control technology is by a series of transducers, by intelligent Control Software, realize that antenna beam is automatically to the self adaptation adjustment of satelloid and polarization of ele direction.This technology has changed the process to satelloid of satellite communication earth station complexity in the past, makes non-satellite communication professional just can operate satellite communication earth station easily.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, when the technology contents that can utilize above-mentioned announcement is made a little change, in every case be not break away from technical solution of the present invention,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and the modification that above embodiment did.
Claims (9)
1, a kind of intelligent portable satellite communications earth station, it is characterized in that: this earth station comprises an antenna case and a termination rack, be provided with in the described antenna case by an antenna reflective face, antenna that one orientation/pitching type antenna pedestal constitutes, a feed and polarization adjustment device, one orientation/pitching adjusting device, a low noise down-conversion assembly, a up-conversion power amplifier assembly;
Be provided with in the termination rack by a L frequency range satellite beacon track receiver, a L frequency range directional coupler, a GPS receiver, a Switching Power Supply, a satellite communication modulator-demodulator, a signal codec device, a router, an Ethernet switch; Antenna controller, satellite communication receiving device, power supply, signal codec device, GPS receiver are formed:
Described antenna reflective face is arranged on described orientation/pitching type antenna pedestal, described feed and polarization adjustment device are arranged on this antenna reflective face, a described low noise down-conversion assembly is arranged on this feed, and described orientation/pitching adjusting device is arranged in the described antenna pedestal; This antenna reflective face is set to polylith, is combined into an antenna reflective face by the antenna reflective face button; This orientation/pitching type antenna pedestal, antenna reflective face, a low noise down-conversion assembly, up-conversion power amplifier assembly, antenna controller, L frequency range satellite beacon track receiver, L frequency range directional coupler, GPS receiver, Switching Power Supply are collected in the described antenna case;
Said apparatus other devices except that being collected in the antenna case are collected in the described termination rack;
Antenna controller is determined the initial angle of pitch of antenna geographic location and antenna reflective face by dipmeter and GPS receiver, antenna controller calculates required polarizing angle of antenna and antenna elevation angle according to the location longitude of these data and used communication satellite; Antenna controller control polarization adjustment device makes the polarizing angle coupling of the polarizing angle and the satellite repeater of antenna, drive orientation/pitching adjusting device according to certain automatic control algorithm, make antenna bearingt/pitching search, and receive satellite-signal, be divided into two-way by L frequency range directional coupler after the frequency reducing of low noise down-conversion assembly is amplified, one road signal is exported to L frequency range satellite beacon track receiver; Another road signal is delivered to the satellite communication modulator-demodulator: this road of delivering to the satellite communication modulator-demodulator is called the receiving branch circuit of satellite communication earth station;
L frequency range satellite beacon track receiver is finished amplification, filtering and the detection to satellite beacon signals, and the flat A/D conversion card to antenna controller of output DC is for control algolithm provides the signal level indication; Set a threshold value, the satellite beacon signals level of L frequency range satellite beacon track receiver output surpasses this threshold value, and antenna just enters the stepping tracking mode, keeps best receptivity;
The satellite-signal that satellite communication earth station receives is given router, router access network based on ethernet switch after the satellite communication modulator-demodulator carries out down-conversion, demodulation, by the signal codec device, obtain user's speech, data, audio-video signal and realize that wide area network inserts then;
User's speech, data, audio-video signal are by behind the signal codec device, the access network based on ethernet switch, by delivering to the satellite communication modulator-demodulator behind the router, after modulation, up-conversion, send into the up-conversion power amplifier assembly, after the frequency conversion of up-conversion power amplifier assembly is amplified, deliver to feed, be emitted to satellite repeater by antenna reflective face then.
2, intelligent portable satellite communications earth station as claimed in claim 1 is characterized in that: described antenna reflective face is 4, is combined into an antenna reflective face by the antenna reflective face button.
3, intelligent portable satellite communications earth station as claimed in claim 1 is characterized in that: described orientation/pitching adjusting device comprises azimuth-drive motor, orientation decelerator, azimuth-drive motor driver, pitching motor, pitching decelerator, pitching motor driver, inclination sensor, orientation right limit switch, orientation left limit switch, pitching lower position switch; Described azimuth-drive motor driver, orientation decelerator and orientation right limit switch, orientation left limit switch drive and limit this azimuth-drive motor of control respectively; Described pitching motor driver, pitching decelerator and pitching lower position switch drive and limit this pitching motor of control respectively.
4, intelligent portable satellite communications earth station as claimed in claim 1, it is characterized in that: described polarization adjustment device comprises polarization adjustment travelling gear, polarization potential device and polarization motor, described polarization motor is adjusted travelling gear by polarization and is driven the rotation of polarization potential device, the adjustment of control polarization angle.
5, intelligent portable satellite communications earth station as claimed in claim 1 is characterized in that: described antenna reflective face is used for receiving and the emission signal of communication.
6, intelligent portable satellite communications earth station as claimed in claim 1 is characterized in that: described signal codec device is used for the digital signal of required transmission or analog signal are carried out the encoding and decoding processing.
7, intelligent portable satellite communications earth station as claimed in claim 1 is characterized in that: described digital signal comprises one or more in data-signal, audio signal or the vision signal.
8, intelligent portable satellite communications earth station as claimed in claim 1, it is characterized in that: described signal codec device transfers the signal to the satellite communication modulator-demodulator after receiving external signal, and, transfer the signal to the feed by after the processing of up-conversion power amplifier assembly device;
Described low noise down-conversion assembly receives the signal that feed source device transmits, again by being sent to L-band beacon receiver and satellite communication modulator-demodulator respectively after the described L frequency range directional coupler shunt;
Described polarization adjustment device is used to adjust polarizing angle, and it is controlled by described antenna controller, and the polarization of electromagnetic wave that intelligent portable satellite communications earth station reception and the polarization of electromagnetic wave of launching and communication satellite coverage are transmitted and received is complementary;
Described antenna controller received signal is also instructed orientation and pitching motor, adjusts antenna bearingt/pitching, and this antenna elevation angle degree feeds back to this antenna controller by dipmeter;
Described antenna controller is determined the initial angle of pitch of antenna geographic location and antenna reflective face by dipmeter and GPS receiver, the location longitude of these data of antenna controller and used communication satellite calculates required polarizing angle of antenna and antenna elevation angle.
9, a kind of control method of this intelligent portable satellite communications earth station as claimed in claim 1, it is characterized in that: communication module, motor drive module and display module six big control modules that module, AD sampling module, dipmeter and GPS receiver module, supervisory control comuter are set by timer are controlled the associated components of this earth station, finish four big antenna control models such as antenna initialization, the search of open loop satellite-signal, the tracking of closed loop satellite-signal, antenna collection;
Timer is provided with counting and the timing in the module realization program;
The AD sampling module is realized the digital-to-analogue conversion of polarization angle and AGC level;
Dipmeter and GPS receiver module obtain the angle of inclination and the on-site gps data of earth station of antenna;
The communication module of supervisory control comuter is instructed to antenna transmission;
Motor drive module is used for adjusting the orientation and the pitching of antenna;
Display module is used for showing the various real time datas of antenna;
Concrete control method is as follows:
(1), antenna initialization:
The antenna initialize mode is finished polarization and is adjusted and antenna pitching adjustment;
After the antenna initialization begins, antenna controller is read the Satellite Tracking parameter that stores in the chip, read the initial pitching data of the represented antenna of dipmeter, read the geographical longitude and latitude of the represented earth station of GPs receiver, by calculating, obtain antenna polarization angle and antenna elevation angle, the control polarization adjustment device is finished the antenna polarization adjustment, control pitching adjusting device is finished antenna pitching adjustment; Enter open loop satellite-signal search pattern;
(2), open loop satellite-signal search:
Open loop satellite-signal search pattern is finished antenna tentatively catching satellite-signal;
Antenna controller control azimuth/pitching adjusting device, make the orientation of antenna reflective face, pitching is searched for by mesh shape, in search procedure, constantly read the dipmeter signal, and constantly compare with last dipmeter signal, if find that difference is bigger, then start pitching and adjust program, the pitching value is adjusted, make it reach the point of theory value again, simultaneously, in search procedure, constantly read the satellite beacon signals intensity level data of L frequency range beacon receiver output by the A/D sampling module, constantly write down and refresh this level data, the antenna reflective face orientation that minimum and maximum down satellite beacon signals intensity level data of the memory record of antenna controller and maximum satellite beacon signals intensity level data are taken place, the angle of pitch; If the threshold value that the maximum satellite beacon signals intensity level data of record and the difference of minimum satellite vehicle beacon signal intensity level data set greater than Control Parameter, antenna controller control azimuth/pitching adjusting device, make the orientation/pitching of antenna reflective face reach antenna reflective face orientation, the angle of pitch that maximum satellite beacon signals intensity level data take place, finish the search of open loop satellite-signal, enter closed loop satellite-signal tracing mode;
(3), the closed loop satellite-signal is followed the tracks of:
Closed loop satellite-signal tracing mode finish antenna to satellite-signal from motion tracking, employing be hill climb system;
Antenna controller control azimuth/pitching adjusting device, the antenna reflective face azimuth pitch is adjusted among a small circle, whenever make a move, all to read the satellite beacon signals intensity level data of L frequency range beacon receiver output by the A/D sampling module, and, compare present receiving machine output level data and preceding output level data, if this output is greater than the output of last time, so, motor then makes a move on identical direction again, if this output electricity then will change the direction of search less than the output level of last time, the motor that antenna controller drives another direction makes a move, follow the tracks of so length by length, receive maximum signal level until antenna, that is, and the antenna beam satellite; Then, when signal greater than certain thresholding, antenna direction is in hold mode; When signal less than thresholding, antenna enters hill climb system automatically, antenna direction is all the time to satelloid, keeps best receptivity:
(4) antenna collection:
At first poled waveguide is reset to a suitable favorite places, then the orientation is moved right to spacing place, find the datum mark in orientation; When the orientation behind right limit, change its direction of motion, make stepping motor to the certain step number of left movement to favorite places; Drive the pitching stepping motor then and move downward certain step number, arrive the pitching favorite places, last, microprocessor starts bolt down procedure, shuts down, and the antenna collection finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101272723A CN100571067C (en) | 2006-09-19 | 2006-09-19 | Intelligent portable satellite communications earth station and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101272723A CN100571067C (en) | 2006-09-19 | 2006-09-19 | Intelligent portable satellite communications earth station and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1968048A CN1968048A (en) | 2007-05-23 |
| CN100571067C true CN100571067C (en) | 2009-12-16 |
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