CN1964137A

CN1964137A - A flat plate type satellite automatic follow-up antenna system

Info

Publication number: CN1964137A
Application number: CN 200610145804
Authority: CN
Inventors: 郝志强
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-17
Filing date: 2006-11-17
Publication date: 2007-05-16
Anticipated expiration: 2026-11-17
Also published as: CN1964137B

Abstract

The related panel satellite automatic track antenna system comprises: an antenna shield, a panel antenna, and an automatic track system included an antenna mechanical rotation device and an electromechanic servo controller and an electronic control part. This invention reduces antenna room greatly, and ensures the communication route freely between satellite and antenna.

Description

Flat plate type satellite automatic follow-up antenna system

Technical field

The present invention relates to satellite automatic follow-up antenna system, the flat plate type satellite automatic follow-up antenna system of more specifically saying so.

Background technology

Continuous progress along with the means of transportation and the vehicles, people travel outdoors more and more frequent, and journey is more and more far away, and Hua Fei time is also more and more on the road, people wish can keep and external communication as in office or family on the road, have therefore produced the demand of mobile communication.The satellite mobile communication is exactly wherein a kind of good method.

Keep in communication with satellite on mobile vehicle, be key problem in technology from motion tracking/stabilized satellite antenna.People have invented some multi-form automatic tracking satellite antennas at present, but a common feature of these antenna is to adopt collection and the radiation device of traditional reflecting surface (for example: parabolic, hyperboloid) as satellite-signal, it is traditional dish shape antenna, for example the applying date is that 2003.12.19, the patent No. are 6864846 United States Patent (USP), and the applying date is that 2003.3.24, the patent No. are United States Patent (USP) of 6710749 or the like.Because the shortcoming of this type of antenna is that the collection/radiation feed of satellite-signal must be installed on the focus of its reflecting surface, and focus must be left reflecting surface certain distance, therefore cause the take up room expansion of position of antenna, finally cause reflector antenna to be difficult on the carrier of compact conformation, install and use.In addition, the efficient of reflector antenna is not high, wants to make the signal that receives to reach enough intensity, the area of necessary spread reflection face, and this has caused antenna to take the further expansion of volume again, makes it to be difficult to more install on mobile vehicle.

Summary of the invention

The objective of the invention is to overcome the prior art deficiency and point out, and a kind of flat plate type satellite automatic follow-up antenna system is provided.The present invention adopts plate shaped antenna to replace traditional reflecting surface type (dish-like) antenna, has reduced taking up room of antenna widely, thus installation and the use of convenient antenna on mobile vehicle.When this antenna is installed carrier movement except overcoming antenna communication/satellite television is received the adverse effect that causes, move, rotate at carrier and (comprising: the rotation on axially of three in direction, pitching, roll), keep the antenna alignment satellite, thereby communication link is unimpeded between maintenance satellite and the antenna.

Technical scheme of the present invention is achieved in that

Flat plate type satellite automatic follow-up antenna system is covered by radome, is connected with transmitter with satellite receiver during operation, and this antenna system has:

Radome: be the geometry of the combination etc. of a hemisphere or cylindrical or two kinds of shapes, radome is enclosed in other parts of this antenna system in the cover;

Plate aerial: be the flat plate array antenna of waveguide slotted array array antenna or micro-strip array antenna or phased array plate aerial or other form:

Automatic tracking system: by forming with the lower part:

The antenna mechanical rotation device: this device is made of antenna installation, fixedly connected clamping body, antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, plate aerial installs and fixes the connection clamping body by antenna, be connected with antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, more than two devices be connected with control of azimuth motor, pitching control motor respectively;

The electromechanical servo control device: this installs by antenna rotational position sensor and antenna limit switch, the control of azimuth motor, azimuth-drive motor control and drive circuit, pitching control motor, pitching motor control and drive circuit, microprocessor/digital signal processor/monolithic processor system, antenna and antenna carrier dynamic angular displacement/rotational angular speed determinator/transducer constitutes, the control of azimuth motor, azimuth-drive motor control and drive circuit and pitching control motor, pitching motor control is controlled by microprocessor with drive circuit, and the output of antenna and antenna carrier dynamic angular displacement/rotational angular velocity measurement device/transducer is fed to microprocessor simultaneously;

Electronic control part: this part is made of antenna feeding circuit or feed waveguide, antenna LNB, satellite-signal strength meter, satellite-signal decoding and satellite feature identification device, signal processing and Control Software System, antenna wire/wireless remote controller, microprocessor/digital signal processor/monolithic processor system and input and output connecting interface;

Plate aerial receives the signal from satellite, it is connected with antenna LNB by antenna feeding circuit or feed waveguide, the output of antenna LNB through satellite-signal strength meter and satellite-signal decoding and satellite feature identification device/circuit, is fed to microprocessor and carries out signal processing again.The mechanical rotation of antenna system/antenna carrier is connected with microprocessor by antenna/antenna carrier dynamic angular displacement/rotational angular velocity measurement device.The output of satellite-signal strength meter also is fed to satellite-signal decoding and satellite feature identification device simultaneously, and its output signal is fed to microprocessor and signal processing and Control Software System respectively.The Signal and Signal Treatment that antenna wire/wireless remote controller receives and the output signal of Control Software System are fed to microprocessor simultaneously and handle.

Radome: be the geometry of the combination etc. of a hemisphere or cylindrical or two kinds of shapes, radome is enclosed in other parts of this antenna system in the cover:

Plate aerial: be the flat plate array antenna of waveguide slotted array array antenna or micro-strip array antenna or phased array plate aerial or other form;

Automatic tracking system: by forming with the lower part:

The antenna mechanical rotation device: this device is made of antenna installation, fixedly connected clamping body, antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, antenna roll rotative mechanism arrangement, plate aerial installs and fixes the connection clamping body by antenna, be connected with antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, antenna roll rotative mechanism arrangement, more than the output of three devices be connected with control of azimuth motor, pitching control motor and roll control motor respectively:

The electromechanical servo control device: this installs by antenna rotational position sensor and antenna limit switch, the control of azimuth motor, azimuth-drive motor control and drive circuit, pitching control motor, pitching motor control and drive circuit, roll control motor, roll Electric Machine Control and drive circuit, microprocessor/digital signal processor/monolithic processor system, antenna and the displacement of antenna carrier dynamic angular, rotational angular velocity determinator transducer constitutes, the control of azimuth motor, azimuth-drive motor control and drive circuit and pitching control motor, face upward Electric Machine Control and drive circuit and roll control motor partially, roll Electric Machine Control and drive circuit are controlled by microprocessor, simultaneously antenna and the displacement of antenna carrier dynamic angular, the output of rotational angular velocity measurement mechanism/transducer is fed to microprocessor;

Electronic control part: this part is made of antenna feeding circuit or feed waveguide, antenna LNB, satellite-signal strength meter, satellite-signal decoding and satellite feature identification device, signal processing and Control Software System, antenna wire/wireless remote controller, microprocessor/digital signal processor/monolithic processor system and input and output connecting interface:

The slotted waveguide array plate aerial;

Automatic tracking system, by forming with the lower part:

The antenna mechanical rotation device: this device is made of antenna installation, fixedly connected clamping body, antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, plate aerial installs and fixes the connection clamping body by antenna, be connected with antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, more than the output of two devices be connected with control of azimuth motor, pitching control motor respectively;

The electromechanical servo control device: this installs by antenna rotational position sensor and antenna limit switch, the control of azimuth motor, azimuth-drive motor control and drive circuit, pitching control motor, pitching motor control and drive circuit, microprocessor/digital signal processor/monolithic processor system, antenna and the displacement of antenna carrier dynamic angular, rotational angular velocity determinator transducer constitutes, the control of azimuth motor, azimuth-drive motor control and drive circuit and pitching control motor, pitching motor control is controlled by microprocessor with drive circuit, simultaneously antenna and the displacement of antenna carrier dynamic angular, the output of rotational angular velocity measurement mechanism/transducer is fed to microprocessor;

The slotted waveguide array plate aerial;

Automatic tracking system: by forming with the lower part:

The antenna mechanical rotation device: this device is made of antenna installation, fixedly connected clamping body, antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, antenna roll rotative mechanism arrangement, plate aerial installs and fixes the connection clamping body by antenna, be connected with antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, antenna roll rotative mechanism arrangement, more than the output of three devices be connected with control of azimuth motor, pitching control motor and roll control motor respectively;

The electromechanical servo control device: this installs by antenna rotational position sensor and antenna limit switch, the control of azimuth motor, azimuth-drive motor control and drive circuit, pitching control motor, pitching motor control and drive circuit, roll control motor, roll Electric Machine Control and drive circuit, microprocessor/digital signal processor/monolithic processor system, antenna and the displacement of antenna carrier dynamic angular, rotational angular velocity determinator transducer constitutes, the control of azimuth motor, azimuth-drive motor control and drive circuit and pitching control motor, pitching motor control and drive circuit and roll control motor, roll Electric Machine Control and drive circuit are controlled by microprocessor, simultaneously antenna and the displacement of antenna carrier dynamic angular, the output of rotational angular velocity measurement mechanism/transducer is fed to microprocessor;

Radome: be several shapes of watching of the combination etc. of a hemisphere or cylindrical or two kinds of shapes, radome is enclosed in other parts of this antenna system in the cover;

The microstrip array plate aerial;

Automatic tracking system: by forming with the lower part:

The electromechanical servo control device: this installs by antenna rotational position sensor and antenna limit switch, the control of azimuth motor, azimuth-drive motor control and drive circuit, pitching control motor, pitching motor control and drive circuit, microprocessor/digital signal processor/monolithic processor system, antenna and the displacement of antenna carrier dynamic angular, rotational angular velocity determinator transducer constitutes, the control of azimuth motor, Electric Machine Control and drive circuit and pitching control motor, Electric Machine Control and drive circuit are controlled by microprocessor, a few antenna carrier dynamic angular of antenna displacement simultaneously, the output of rotational angular velocity measurement mechanism/transducer is fed to microprocessor;

Electronic control part: this part is made of antenna feeding circuit or feed waveguide, antenna LNB, satellite-signal ionization meter transposition, satellite-signal decoding and satellite feature identification device, signal processing and Control Software System, antenna wire/wireless remote controller, microprocessor/digital signal processor/monolithic processor system and input and output connecting interface;

Flat plate type satellite automatic follow-up antenna system is covered by radome, is connected with transmitter with satellite receiver during operation, and this antenna system has;

The microstrip array plate aerial;

Automatic tracking system: by forming with the lower part:

The phased array plate type antenna;

Automatic tracking system: by forming with the lower part:

The phased array plate type antenna;

Automatic tracking system: by forming with the lower part:

The electromechanical servo control device: this installs by antenna rotational position sensor and antenna limit switch, the control of azimuth motor, azimuth-drive motor control and drive circuit, pitching control motor, pitching motor control and drive circuit, roll control motor, roll Electric Machine Control and drive circuit, microprocessor/digital signal processor/monolithic processor system, antenna and the displacement of antenna carrier dynamic angular, rotational angular velocity determinator transducer constitutes, the control of azimuth motor, azimuth-drive motor control and drive circuit and pitching control motor, pitching motor control and drive circuit and roll control motor, roll Electric Machine Control and drive circuit are controlled by processor, simultaneously antenna and the displacement of antenna carrier dynamic angular, the output of rotational angular velocity measurement mechanism/transducer is fed to microprocessor;

Plate aerial receives the signal from satellite, it is connected with antenna LNB by antenna feeding circuit or feed waveguide, the output of antenna LNB through satellite-signal strength meter and satellite-signal decoding and satellite feature identification device/circuit, is fed to microprocessor and carries out signal processing again.The mechanical rotation of antenna system/antenna carrier is connected with microprocessor by antenna carrier dynamic angular displacement/rotational angular velocity measurement device.The output of satellite-signal strength meter also is fed to satellite-signal decoding and satellite feature identification device simultaneously, and its output signal is fed to microprocessor and signal processing and Control Software System respectively.The Signal and Signal Treatment that antenna wire/wireless remote controller receives and the output signal of Control Software System are fed to microprocessor simultaneously and handle.

The described radome of this system is by the good non-conducting material manufacturing of wave penetrate capability.

The described plate aerial of this system is single antenna of receiving.

The described plate aerial of this system is the transceiver communication antenna.

In the described flat automatic tracking antenna of this system, can adopt phased-array technique, make antenna among the carrier traveling process, follow the tracks of the satellite more than two simultaneously, and simultaneously keep continual communication with satellite more than two.

In this device, adopt satellite characteristic information discriminating method that different satellites are discerned, that is: at first adopt bandwidth filter that the frequency signal outside the assigned frequency is carried out filtering, remove useless frequency, then the signal in the designated frequency range is carried out ionization meter, while search signal intensity maximum position in predefined spatial dimension, and by antenna control system with this maximum position of antenna alignment, after reaching the intensity that to decode when signal, according to employed signal modulation of specified satellite and channel coding method signal is carried out demodulation, and signal after the demodulation carried out channel-decoding and analysis, analysis comprises the comparison one by one of following information characteristics: signal frequency, the polarizations mode, the signal modulation system, coding method, comprise channel coding method and error correction/encoding method, symbol rate, if above information characteristics contrast is errorless, it is TS stream that simultaneity factor can solve signal data stream, and can lock following information: the carrier signal of appointment is the QPSK signal for example, the carrier clock signal, the forward error correction coding signal, the satellite that then can be judged as appointment in view of the above is errorless, otherwise, to carry out satellite acquisition again, the employed parameters/information quantity of above satellite characteristic information discriminating method can be carried out part according to operating position and be reduced.

In this device, the received signal that meets the satellite characteristic information is carried out signal strength measurement, the variation of signal strength signal intensity is used to refer to the dynamic tracing of lead antenna to the aligning and the satellite of satellite, by continuous measurement and constantly correction, the synthetic beam direction that makes antenna forms initial alignment and tenacious tracking to satellite all the time to the signal maximum direction of satelloid.

In this device when antenna carrier movement/when turning to, antenna can adopt the combination of one of following two kinds of methods or two kinds of methods to the dynamic tracking method of satellite: method one, the direction of injecting that adopts satellite-signal maximum signal/maximum signal level method for tracing (for example: application number is the Chinese patent of ZL200420058643.3 denomination of invention for " signal levelling detecting and dynamic tracking satellite antenna ") to keep antenna surface or the synthetic beam direction of antenna to aim at satellite-signal maximum intensity/level all the time.Method two, employing stabilized platform principle.Promptly adopt gyrosensor/angular transducer measurement antenna/antenna carrier (to comprise: the angular displacement on direction, pitching, three directions of roll) with respect to the angular displacement of satellite, and by antenna rotative mechanism arrangement and antenna rotate control and servo system drive antenna surface to the measuring angles such as rightabout rotation of antenna/antenna carrier angular displacement to eliminate of the angular deflection of antenna/antenna carrier with respect to satellite/terrestrial coordinate system, make the synthetic wave beam of antenna surface/antenna keep angle constant with respect to satellite/terrestrial coordinate system.

Flat automatic tracking antenna adopts phased-array technique on plate aerial, makes antenna among the carrier traveling process, reduces the mechanical rotation of antenna, increases the tracking velocity of antenna simultaneously.

Antenna system of the present invention by microstrip circuit/waveguide circuit will be distributed in the satellite-signal that receives on a plurality of antenna elements on the plate shaped antenna array collect/converge/synthesize, and the signal after will converging/collect by feed and transmission circuit/waveguide is transferred to low noise amplifier frequency changer (LNB) and amplifies and frequency conversion.Export to late-class circuit (satellite-signal decoding and satellite feature identification device/circuit, satellite-signal ionization meter circuit) through the signal that LNB amplifies and frequency conversion is later by the cable form.

The invention has the beneficial effects as follows:

The LNB of antenna does not need to be installed in the focus part as reflector antenna, the volume that therefore takes up room significantly reduces, and is fit to more use on the narrow and small carrier of various vehicles, boats and ships, train spaces such as (being commonly referred to as antenna carrier/carrier).

Antenna efficiency improves (referring to waveguide crack formula plate aerial) greatly, and it improves 20-30% than traditional antenna efficient, the area of antenna surface is also had obviously reduce.

Antenna system of the present invention can realize transceiver easily, is real communication antenna therefore.It watches the satellite television programming except making the user in the middle of the carrier traveling process incessantly, the often convenient emission function of realizing of plate shaped antenna, therefore, can use this antenna to keep and extraneous uninterrupted communication, thus for the user provide advance in services such as continual amusement, Internet, video/audio/data communication.

Use phased-array technique when plate aerial, can in the carrier moving process, keep uninterrupted communication with multi-satellite simultaneously.Therefore this kind design has the ability of supporting many satellite communications with individual antenna simultaneously, and this kind ability is that original reflection Noodles antenna is difficult to possess.

Use phased-array technique when plate aerial, can in carrier high-speed maneuver motion process, realize the quick dynamic tracking of satellite.When especially using on the high-speed maneuver motion carrier, the ability that this kind followed the tracks of fast is that the antenna of any other type is unrivaled.Sometimes or even unique selectable form.

Description of drawings

Fig. 1 is the concrete enforcement block diagram of flat plate type satellite automatic follow-up antenna system of the present invention.

Embodiment:

Antenna system of the present invention is by forming with the lower part:

1 radome, 2 plate aerials, 3 antennas are fixed/are connected/clamping body, 4 antenna bearingt rotative mechanism arrangements, 5 antenna pitch rotation mechanical devices, 6 antenna roll rotative mechanism arrangements, 7 antenna rotational position sensors and antenna limit switch, 8 control of azimuth motors, Electric Machine Control and drive circuit, 9 pitching control motors, Electric Machine Control and drive circuit, 10 rolls control motor, Electric Machine Control and drive circuit, 11 microprocessors/digital signal processor/monolithic processor system, 12 antenna feeding circuits or feed waveguide (comprising duplexer), 13 antennas/antenna carrier dynamic angular displacement/rotational angular velocity measurement device/transducer, 14 antenna LNB, 15 defend reason signal strength measurement device, the decoding of 16 satellite-signals and satellite feature identification device, 17 signal processing and Control Software System, 18 antenna wire/wireless remote controllers, 19 aerial signal I/O connection/interfaces.

Satellite automatic follow-up antenna system can be according to the purposes of different plate aerials and instructions for use to carrying out part with upper-part and simplify or reconfiguring, to produce the type of different embodiment.

Embodiment 1, adopt the slotted waveguide array plate aerial, wherein, in the system of antenna automatic tracking satellite, antenna 1 installing and locating has on two axial rotation mechanical devices 4,5, be orientation, pitching two axial rotation mechanisms, mechanical rotating mechanism drives plate aerial by motor 8,9 and rotates under the control of electromechanical servo control system.Antenna machinery front towards and the synthetic beam direction of antenna between have definite angle corresponding relation, so the mechanical rotation by antenna array realizes that the synthetic wave beam of aerial array is in above two rotations/mobile on axially.

Embodiment 2 adopts the slotted waveguide array plate aerial, wherein, in the system of antenna automatic tracking satellite, antenna 1 installing and locating has on three rotative mechanism arrangements 4,5,6, be orientation, pitching, roll three axial rotation mechanisms, mechanical rotating mechanism drives plate aerial by motor 8,9,10 and rotates under the control of electromechanical servo control system.Antenna machinery front towards and the synthetic beam direction of antenna between have definite angle corresponding relation, so the mechanical rotation by antenna array realizes that the synthetic wave beam of aerial array is in above three rotations/mobile on axially.

Embodiment 3 adopts the microstrip array plate aerial, wherein, in the system of antenna automatic tracking satellite, antenna 1 installing and locating has on two rotative mechanism arrangements 4,5, be orientation, pitching two axial rotation mechanisms, mechanical rotating mechanism drives plate aerial by motor 8,9 and rotates under the control of electromechanical servo control system.Antenna machinery front towards and the synthetic beam direction of antenna between have definite angle corresponding relation, so the mechanical rotation by antenna array realizes that the synthetic wave beam of aerial array is in above two rotations/mobile on axially.

Embodiment 4 adopts the microstrip array plate aerial, wherein, in the system of antenna automatic tracking satellite, antenna 1 installing and locating has on three rotative mechanism arrangements 4,5,6, be orientation, pitching, roll three axial rotation mechanisms, mechanical rotating mechanism drives plate aerial by motor 8,9,10 and rotates under the control of electromechanical servo control system.Antenna machinery front towards and the synthetic beam direction of antenna between have definite angle corresponding relation, so the mechanical rotation by antenna array realizes that the synthetic wave beam of aerial array is in above three rotations/mobile on axially.

Embodiment 5 adopts the phased array plate aerial, wherein, in the system of antenna automatic tracking satellite, antenna 1 installing and locating has on two rotative mechanism arrangements 4,5, be orientation, pitching two axial rotation mechanisms, mechanical rotating mechanism drives plate aerial by motor 8,9 and rotates under the control of electromechanical servo control system.Antenna machinery front towards and the synthetic beam direction of antenna between have definite angle corresponding relation, so the mechanical rotation by antenna array realizes that the synthetic wave beam of aerial array is in above two rotations/mobile on axially.

Embodiment 6 adopts the phased array plate aerial, wherein, in the system of antenna automatic tracking satellite, antenna 1 installing and locating has on three rotative mechanism arrangements 4,5,6, be orientation, pitching, roll three axial rotation mechanisms, mechanical rotating mechanism drives plate aerial by motor 8,9,10 and rotates under the control of electromechanical servo control system.Antenna machinery front towards and the synthetic beam direction of antenna between have definite angle corresponding relation, so fall the mechanical rotation of face, realize that the synthetic wave beam of aerial array is in above three rotations/mobile on axially by antenna.

As follows to the function declaration of critical piece in the embodiment block diagram below:

Radome 1 profile is hemisphere or combination cylindrical or two kinds of shapes, and its wave penetrate capability is good, and general employing can be satisfied dielectric property, mechanical property, environmental resistance, processing performance requirement simultaneously, and is suitable for the made of suitability for industrialized production.The electrical property of dielectric property and radome is closely related, is the most important consideration index that radome material is selected.At present, the more employing of radome material is the material that reinforcing materials such as epoxy resin and E glass fibre, D glass fibre, quartz glass fibre and modified bismaleimide resin, DAIP resin, cyanate ester resin etc. have the good medium performance.Radome is made generally in semi-spherical shape, so that the internal motion of antenna.The radome major function is that the important process parts for antenna and antenna system provide environmental protection.

Plate aerial 2 plate aerials are vitals of native system, also are the principal characters that native system is different from other type antenna.Because this class antenna can be manufactured into for being similar to dull and stereotyped shape, so be called as plate aerial.Plate aerial is a class antenna, and normally used have: microband printing circuit class array antenna, waveguide crack class array antenna, phased-array antenna or the like.More than each class multiple different form can be arranged again.For example: microband printing circuit class array antenna is common to be had: micro-strip paster antenna, micro-strip oscillator antenna, microband travelling wave antenna, little band leaky antenna or the like.

Phased array antenna is from the array antenna development, and technology is the antenna of complexity comparatively.It mainly relies on the current feed phase of array of controls antenna radiation unit to change the shape and the direction of synthesizing wave beam, realizes that synthetic wave beam in the certain space interscan, replaces a kind of antenna that antenna surface mechanical scanning is rotated.The phased array antenna basic composition comprises that array radiating element, phase shifter and wave beam form parts such as feed networking.Another advantage of phased array antenna is to realize the multi-beam control of a surface antenna, can realize that a surface antenna is simultaneously to the communication of multi-satellite.

Take all factors into consideration multiple factors such as performance and cost, the waveguide slotted array array antenna should be classified first-selection as.

Antenna LNB14: aerial signal filtering and low noise amplifier and aerial signal low-converter usually are combined in becomes parts (being called LNB) together.The weak satellite signal that it is responsible for that antenna is received amplifies and its frequency is reduced, so that cable transmission and being for further processing.The LNB that plate aerial uses is in general different with the LNB that reflector antenna uses, and the LNB that plate aerial uses often needs to come integrated specialized designs according to the feeding network of array antennas form.Concerning the waveguide slotted array array antenna, the interface shape of LNB and antenna often adopts the ring flange form.

Satellite-signal strength meter/circuit 15: this circuit is responsible for the wireless signal of satellites transmits is carried out ionization meter.Circuit must be at first screens and filtering the satellite frequency of appointment, and the useless composition of filtering carries out ionization meter to the specified frequency signal then.Because the employed frequency of different satellites is overlapping through regular meeting, the frequency of satellite and other signal source also can be overlapping, so the satellite-signal ionization meter must be just meaningful with satellite-signal decoding and satellite feature identification device/circuit cooperating.

The satellite-signal decoding is decoded with satellite feature identification device/circuit 16 satellite-signals and is mainly used to realize the identification of different satellites with satellite feature identification device/circuit

The course of work of this antenna system is divided into search procedure and two stages of tracing process (or being two kinds of mode of operations).

A) search procedure is according to user's remote control command, and satellite antenna begins to carry out the search of particular satellite signal.Search will be carried out according to the optimization searching pattern of design in advance, to reduce search time.Search is calculated the due initial angle of pitch of satellite antenna so that antenna can be found the specified satellite signal apace with reference to the orbit parameter of satellite.After receiving satellite-signal, the satellite-signal measuring circuit will adopt the satellite characteristic information discriminating method of this patent, use information discriminating method of the present invention to carry out the satellite-signal signature analysis, satellite be made be differentiated and judgement.Select the satellite that user instruction is followed the tracks of, abandon irrelevant satellite.After the satellite acquisition process was finished, antenna changed Satellite Tracking process (pattern) over to.

The course of work of system is as follows: under the control of microprocessor/digital signal processor/monolithic processor system 11, antenna rotates each parts collaborative work of control and servo system and drives antenna with certain search pattern rotation, carries out satellite acquisition.Satellite-signal sees through the good radome 1 of wave penetrate capability and is received by plate aerial 2, signal is sent into signal by antenna feeding circuit or feed waveguide 12 the signal amplification of the low noise amplifier of LNB14 to assigned frequency, signal after the amplification is sent into low-converter, satellite-signal after the process frequency translation exports satellite-signal strength meter/circuit 15 in the mode of cable, when satellite-signal reaches certain intensity, the satellite-signal decoding is started working with satellite feature identification device/circuit 16, adopt satellite characteristic information discriminating method of the present invention, satellite is discerned judgement.If satellite-signal does not meet the specified feature of this satellite characteristic information discriminating method, then abandon this satellite, repeat above process and continue search, until the satellite of finding and lock appointment.

Satellite characteristic information discriminating method at first adopts bandwidth filter that the frequency signal outside the assigned frequency is carried out filtering (14), removes useless frequency.Then the signal in the designated frequency range is carried out ionization meter (15), search signal intensity maximum position in predefined spatial dimension simultaneously, and by antenna control system with this maximum position of antenna alignment.After reaching the intensity (16) that to decode when signal, according to employed signal modulation of specified satellite and channel coding method signal is carried out demodulation, and signal after the demodulation is carried out channel-decoding and analysis (17).Analysis comprises the comparison one by one to following information: signal frequency, polarizations mode, signal modulation system, coding method (comprising channel coding method and error correction/encoding method), symbol rate, if above feature contrast is errorless, simultaneity factor can solve signal data stream (TS stream), and can lock following information: the carrier signal of appointment (as: QPSK signal), carrier clock signal, forward error correction coding signal, the satellite that then can be judged as appointment in view of the above is errorless.Otherwise, will carry out satellite acquisition again.

B) the tracing process antenna system is finished after the satellite acquisition process, and the satellite of appointment has been aimed at and locked to antenna.Antenna begins to change over to the Satellite Tracking process.The antenna system tracing process will be carried out dynamic tracking to the satellite of appointment, to overcome the deviation effects that carrier movement causes satellite communication.Tracing process is divided into use antenna/antenna carrier dynamic angular displacement/rotational angular velocity measurement device/transducer 13 (hereinafter to be referred as transducers 13) and does not use 13 two kinds of situations of transducer:

I. use transducer 13 when system is equipped with transducer 13, transducer 13 will be experienced the various angular displacements/angular displacement speed (comprising: direction, pitching, three axial information of roll) from antenna/carrier, and send this information to microprocessor/digital signal processor/monolithic processor system 11, carry out signal processing by signal processing and Control Software System 17.In general, signal processing comprises: processes such as the drift correction that the various factors of signal filtering and prediction, transducer causes, angular displacement speed integration.Treated signal becomes each deviation angle on axially of antenna with each displacement on axially of carrier.This angle is delivered to antenna and is rotated control and servo system, rotates at antenna under the control of control and servo system, and antenna is eliminated the satellite deviation of the alignment that the carrier angular displacement brings, and keeps the aligning of satellite.

Ii. do not use transducer 13 when system not during sensor installation 13, system adopts signal level maximum tracking to the tracking of satellite, sees that application number is the utility model patent of ZL200420058643.3 denomination of invention for " signal levelling detecting and dynamic tracking satellite antenna ".

Satellite automatic follow-up stabilized antenna system can be installed in the inside of motion carrier, also can be installed in the outside of motion carrier.

This antenna system is installed satellite control remote control circuit, can by wired and wireless remote control, select satellite automatically and change satellite according to customer requirements.

Claims

1, flat plate type satellite automatic follow-up antenna system is covered by radome, is connected with transmitter with satellite receiver during operation, and this antenna system has:

Radome: be a hemisphere or geometries such as combination cylindrical or two kinds of shapes, radome is enclosed in other parts of this antenna system in the cover;

Automatic tracking system: by forming with the lower part:

The antenna mechanical rotation device: this device is made of antenna installation, fixedly connected clamping body, antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, plate aerial is by antenna installation, fixedly connected clamping body, be connected with antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, more than the output of two devices be connected with control of azimuth motor, pitching control motor respectively;

The electromechanical servo control device: this installs by antenna rotational position sensor and antenna limit switch, the control of azimuth motor, azimuth-drive motor control and drive circuit, pitching control motor, pitching motor control and drive circuit, microprocessor/digital signal processor/monolithic processor system, antenna and antenna carrier dynamic angular displacement/rotational angular speed determinator transducer constitute, the control of azimuth motor, azimuth-drive motor control and drive circuit and pitching control motor, pitching motor control is controlled by microprocessor with drive circuit, simultaneously antenna and the displacement of antenna carrier dynamic angular, the output of rotational angular velocity measurement mechanism/transducer is fed to microprocessor;

2, flat plate type satellite automatic follow-up antenna system is covered by radome, is connected with transmitter with satellite receiver during operation, and this antenna system has:

Automatic tracking system: by forming with the lower part:

The antenna mechanical rotation device: this device is made of antenna installation/fixedly connected clamping body, antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, antenna roll rotative mechanism arrangement, plate aerial installs and fixes the connection clamping body by antenna, be connected with antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, antenna roll rotative mechanism arrangement, more than the output of three devices be connected with control of azimuth motor, pitching control motor and roll control motor respectively;

3, flat plate type satellite automatic follow-up antenna system is covered by radome, is connected with transmitter with satellite receiver during operation, and this antenna system has:

The slotted waveguide array plate aerial;

Automatic tracking system, by forming with the lower part:

4, flat plate type satellite automatic follow-up antenna system is covered by radome, is connected with transmitter with satellite receiver during operation, and this antenna system has:

The slotted waveguide array plate aerial;

Automatic tracking system: by forming with the lower part:

5, flat plate type satellite automatic follow-up antenna system is covered by radome, is connected with transmitter with satellite receiver during operation, and this antenna system has:

The microstrip array plate aerial;

Automatic tracking system: by forming with the lower part:

The antenna mechanical rotation device: this device is made of antenna installation, fixedly connected clamping body, antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, plate aerial installs and fixes the connection clamping body by antenna, be connected with antenna bearingt rotative mechanism arrangement, antenna pitch rotation mechanical device, more than the output of two devices be connected with control of azimuth motor, pitching control motor respectively:

6, flat plate type satellite automatic follow-up antenna system is covered by radome, is connected with transmitter with satellite receiver during operation, and this antenna system has:

The microstrip array plate aerial;

Automatic tracking system: by forming with the lower part:

7, the flat plate type satellite automatic follow-up antenna system device is covered by radome, is connected with transmitter with satellite receiver during operation, and this antenna system has:

The phased array plate type antenna;

Automatic tracking system: by forming with the lower part:

8, flat plate type satellite automatic follow-up antenna system is covered by radome, is connected with transmitter with satellite receiver during operation, and this antenna system has:

The phased array plate type antenna;

Automatic tracking system: by forming with the lower part:

The electromechanical servo control device: this installs by antenna rotational position sensor and antenna limit switch, the control of azimuth motor, azimuth-drive motor control and drive circuit, pitching control motor, pitching motor control and drive circuit, roll control motor, roll Electric Machine Control and drive circuit, microprocessor/digital signal processor/monolithic processor system, antenna and the displacement of antenna carrier dynamic angular, rotational angular velocity determinator transducer constitutes, the control of azimuth motor, azimuth-drive motor control and drive circuit and pitching control motor, pitching motor control and drive circuit and roll control motor, roll Electric Machine Control and drive circuit are controlled by microprocessor, simultaneously antenna and the displacement of antenna carrier dynamic angular, the output of rotational angular velocity measurement mechanism/transducer is fed to microprocessor

9,, it is characterized in that the described radome of this system is by the good non-conducting material manufacturing of wave penetrate capability according to any described flat plate type satellite automatic follow-up antenna system among the claim 1-8.

10,, it is characterized in that the described plate aerial of this system is single antenna of receiving according to any described flat plate type satellite automatic follow-up antenna system among the claim 1-8.

11,, it is characterized in that the described plate aerial of this system is the transceiver communication antenna according to any described flat plate type satellite automatic follow-up antenna system among the claim 1-8.

12, according to any described flat plate type satellite automatic follow-up antenna system among the claim 1-8, it is characterized in that in the described flat automatic tracking antenna of this system, can adopt phased-array technique, make antenna among the carrier traveling process, follow the tracks of the satellite more than two simultaneously, and simultaneously keep continual communication with satellite more than two.

13, according to any described flat plate type satellite automatic follow-up antenna system among the claim 1-8, it is characterized in that in this system, adopting satellite characteristic information discriminating method that different satellites are discerned, that is: at first adopt bandwidth filter that the frequency signal outside the assigned frequency is carried out filtering, remove useless frequency, then the signal in the designated frequency range is carried out ionization meter, while search signal intensity maximum position in predefined spatial dimension, and by antenna control system with this maximum position of antenna alignment, after reaching the intensity that to decode when signal, according to employed signal modulation of specified satellite and channel coding method signal is carried out demodulation, and signal after the demodulation carried out channel-decoding and analysis, analysis comprises the comparison one by one of following information characteristics: signal frequency, the polarizations mode, the signal modulation system, coding method (comprising channel coding method and error correction/encoding method), symbol rate, if above information characteristics contrast is errorless, it is TS stream that simultaneity factor can solve signal data stream, and can lock following information: the carrier signal of appointment is the QPSK signal for example, the carrier clock signal, the forward error correction coding signal, the satellite that then can be judged as appointment in view of the above is errorless.Otherwise, will carry out satellite acquisition again, the employed parameters/information quantity of above satellite characteristic information discriminating method can be carried out part according to operating position and be reduced.

14, according to any described flat plate type satellite automatic follow-up antenna system among the claim 1-8, it is characterized in that in this system, the received signal that meets the satellite characteristic information being carried out signal strength measurement, the variation of signal strength signal intensity is used to refer to the dynamic tracing of lead antenna to the aligning and the satellite of satellite, by continuous measurement and constantly correction, the synthetic beam direction that makes antenna forms initial alignment and tenacious tracking to satellite all the time to the signal maximum direction of satelloid.