CN101908919B - Satellite antenna tracking system with multiple receivers - Google Patents
Satellite antenna tracking system with multiple receivers Download PDFInfo
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- CN101908919B CN101908919B CN 201010227420 CN201010227420A CN101908919B CN 101908919 B CN101908919 B CN 101908919B CN 201010227420 CN201010227420 CN 201010227420 CN 201010227420 A CN201010227420 A CN 201010227420A CN 101908919 B CN101908919 B CN 101908919B
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Abstract
The invention discloses a satellite antenna tracking system with multiple receivers, comprising a satellite antenna, a low noise frequency converter connected with the satellite antenna, an adapter connected with the low noise frequency converter, an antenna controller and n antenna tracking receivers, wherein each antenna tracking receiver is connected with the adapter, one end of the antenna controller is connected with the satellite antenna, the other end is respectively connected with each antenna tracking receiver, and the antenna controller is used for selecting one signal from n signals outputted from the n antenna tracking receivers as a reference signal and aligning the satellite antenna to a satellite through adjustment according to the reference signal. The system can increase the reliability of an antenna system in finding the satellite.
Description
Technical field
The present invention relates to automatic star-seeking satellite antenna technical field, particularly a kind of satellite antenna tracking system with multiple receivers.
Background technology
The automatic star-seeking satellite antenna is when work, and traditional method is that a receiver of configuration (being generally the DVB receiver) is used to receive the reference signal on the satellite, and antenna tracking system is according to the DC level intensity of receiver output, and control antenna is to satelloid automatically.Because the unsteadiness of satellite reference signal can cause satellite antenna can not correctly follow the tracks of required work satellite.
Summary of the invention
The technical problem that (one) will solve
The technical problem that the present invention will solve is: how to improve the reliability that antenna system is sought star.
(2) technical scheme
In order to achieve the above object; The invention provides a kind of satellite antenna tracking system with multiple receivers; Comprise satellite antenna 1, the low noise frequency converter 2 that is connected with said satellite antenna 1, the combined device 5 that is connected with said low noise frequency converter 2, this system also comprises antenna controller 4 and n antenna track receiver, and each antenna track receiver all is connected with said combined device 5; Said antenna controller 4 one ends are connected with said satellite antenna 1; The other end is connected with each antenna track receiver respectively, and said antenna controller 4 is used for selecting one tunnel signal as a reference from the n road signal that said n antenna track receiver exported according to the satellite reference signal of each autotracking, and adjusts said satellite antenna to satelloid according to this reference signal; Wherein, n >=2.
Wherein, n is preferably 2, and these two antenna track receivers are beacon receiver 3-1 and DVB receiver 3-2.Perhaps, n can also be 3, and these three antenna track receivers are beacon receiver 3-1, DVB receiver 3-2 and carrier receiver.
Wherein, said beacon receiver 3-1 is connected with said antenna controller 4 through the RS232 serial ports, and said DVB receiver 3-2 is connected with said antenna controller 4 through the iic bus interface.
Wherein, also be connected with A/D sampler 7 between said beacon receiver 3-1 and DVB receiver 3-2 and the said antenna controller 4 respectively.
Wherein, also comprise the modulator-demodulator 6 that is connected with said combined device 5.
Wherein, Also comprise the polarization sensor 8, dipmeter 9 and the GPS receiver 10 that are connected between said satellite antenna 1 and the said antenna controller 4; Said polarization sensor 8 is used for the polarization position to the said satellite antenna 1 of said antenna controller 4 feedbacks; Said dipmeter 9 is used to read the elevation angle of said satellite antenna 1 reflecting surface, and said GPS receiver 10 is used for confirming warp, the latitude of said satellite antenna 1 service position.
(3) beneficial effect
Technical scheme of the present invention provides simultaneously a plurality of (being preferably two), and receiver supplies the antenna tracking system control antenna to seek star; In the sky during line following work satellite; Two receivers are according to the satellite reference signal of each autotracking, and output DC is flat, and compare with the prestore threshold value of tracking signal of tracking system; Automatically select the best receiver of tracking effect to supply the antenna tracking system control antenna to seek star by certain strategy; Therefore, the satellite antenna of various automatic star-seekings can be applied to, the reliability that antenna system is sought star can be improved.And a plurality of track receivers both can be selected by controller automatically, also can pass through the artificial selection of monitoring software man-machine interface, and selection mode is flexible.
Description of drawings
Fig. 1 is the structural representation of the satellite antenna tracking system of the embodiment of the invention;
Fig. 2 is the control logic figure of the satellite antenna tracking system of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Show like Fig. 1; This system comprises: satellite antenna 1, low noise frequency converter (Low Noise Block; LNB) 2, beacon receiver 3-1, DVB receiver 3-2, antenna controller 4, combined device 5, modulator-demodulator 6, A/D sampler 7, polarization sensor 8, dipmeter 9, GPS (Global Positioning System, global positioning system) receiver 10.Need to prove that beacon is the tracking signal that all has on each satellite, select beacon receiver can make system's tracking satellite reliably, and the DVB receiver is used to receive the DVB signal on the satellite, and user's DVB signal is also arranged on the general satellite.The DVB receiver can identify the parameter of different DVB signals, thereby also more reliable.So present embodiment selection beacon receiver and DVB receiver are as the double-receiver of present embodiment system.Plural receiver can also be selected, for example, other receivers such as carrier receiver can also be added.
As shown in Figure 2; Beacon receiver 3-1 connects MCU (the Micro Controller Unit in the antenna controller; Chinese is a multipoint control unit; Claim one chip microcomputer again), DVB (Digital Video Broadcasting, DVB) receiver 3-2 connects MCU with the iic bus interface.
The operation principle of this system is following: on the one hand; Satellite antenna 1 receiving satellite signal;, low noise frequency converter 2 goes downwards to combined device 5 input ports after amplifying; The main path signal of combined device 5 is delivered to modulator-demodulator 6, and its two-way mat closes signal (for the intermediate-freuqncy signal of L frequency range (being approximately 1 to 2GHZ)) and delivers to beacon receiver 3-1 and DVB receiver 3-2 respectively; On the other hand; During satellite antenna 1 work; Antenna controller 4 receives the beacon signal and the DVB signal of satellite from satellite antenna 1, and MCU writes beacon receiver 3-1 through serial ports with the beacon signal frequency of satellite, through iic bus the DVB signal frequency of satellite is write DVB receiver 3-2.
Then, beacon receiver 3-1 and DVB receiver 3-2 close signal with this two-way mat and are demodulated into respectively and this beacon signal and the proportional two-way dc level signal output of DVB signal.The dc level signal of two receiver outputs is delivered to the input port of MCU after 7 samplings of A/D sampler; MCU with the difference of two-way DC level and the noise level of input with wherein in advance the threshold value of storage compare, and the reference signal control antenna of selecting one tunnel conduct to be used to seek star is followed the tracks of.
Selection mode has two kinds.First kind is automatic selection mode: as stated, two receivers are by the automatic configuration effort parameter of MCU, when satellite antenna tracking work satellite; Two receivers are according to the satellite reference signal of each autotracking; Export said dc level signal, after the A/D conversion, deliver to the MCU input port.When the difference of the DC level of beacon receiver output and beacon noise level during greater than the threshold value of beacon signal, MCU selects beacon receiver output signal confession native system control antenna to seek star; When the difference of the DC level of DVB receiver output and DVB noise level during greater than the threshold value of DVB signal, MCU selects the output signal confession native system control antenna of DVB receiver to seek star; When the difference of the DC level of two receivers output and noise level separately during all greater than separately threshold value, MCU compares two signals, selects big one of relative signal intensity to supply the antenna tracking system control antenna to seek star.Specifically, be the excursion size of comparative level.For example; The level value of the dc level signal (so-called beacon noise level) of beacon receiver output is 1V when departing from satellite, and the level value of the dc level signal (so-called DVB noise level) of DVB receiver output is 2V when departing from satellite, is 3V and beacon receiver after the last satellite is exported; The output of DVB receiver is 3.5V; Then beacon receiver can be selected by system, because the variation of the level of beacon receiver is bigger, is more convenient for following the tracks of.
When the above antenna track receiver of configuration 3 or 3, each receiver is by the automatic configuration effort parameter of MCU, when satellite antenna tracking work satellite; Each receiver is according to the satellite reference signal of each autotracking; Export said dc level signal, after the A/D conversion, deliver to the MCU input port.When the difference of the DC level of beacon receiver output and beacon noise level during greater than the threshold value of beacon signal, MCU selects beacon receiver output signal confession native system control antenna to seek star; When the difference of the DC level of DVB receiver output and DVB noise level during greater than the threshold value of DVB signal, MCU selects the output signal confession native system control antenna of DVB receiver to seek star; When the difference of the DC level of the output of carrier receiver and carrier noise level during greater than the threshold value of carrier signal, MCU selects the output signal of carrier receiver to supply the native system control antenna to seek star; As the difference of the DC level of a plurality of receivers output and noise level separately during greater than separately threshold value; MCU compares these several signals; Select a big confession antenna tracking system control antenna of relative signal intensity to seek star, concrete selection strategy is identical with the situation of two kinds of track receivers.
Second kind is the manual switching mode: behind the system boot; With PDA (personal digital assistant; Personal digital assistant) or PC (Personal Computer, PC) connect the built-in wireless communication module of antenna tracking system (function of wireless communication module be to realize communicating by letter between antenna controller (specifically being meant its Control Software) and the PDA/PC monitoring software.Its end links to each other with antenna controller through serial ports; The other end is a wireless antenna, is used for connecting PDA/PC equipment with wireless mode), open special-purpose monitoring software and login; Get into parameter the interface is set; The receiver of selection work and configuring receiver parameter, after parameter was provided with completion, antenna controller supplied the antenna tracking system control antenna to seek star according to the receiver output signal of artificial selection.
Selection is used to seek after the reference signal of star, and antenna controller is according to orientation, the pitching degree of this reference signal adjustment antenna, up to antenna correctly to satelloid.Antenna controller is controlled the satellite antenna tracking satellite, in antenna bearingt or elevating movement process, reads the level data of this reference signal, when this level is maximum, shows that antenna is the most accurate to star.
Specifically, the level data of more current output and the preceding once level data of output are if the level data of current output then continues to search for according to the current search direction greater than the preceding once level data of output; If the level data of current output is less than the preceding once level data of output, then to search for current search direction in the opposite direction; Level data until output is maximum, and this direction motion stops.Repeat above-mentioned action in another direction then, maximum up to the level of output.Repeat once above-mentioned both direction action once more.Antenna beam satellite then, this moment, DC level was maximum.
Antenna servo tracking system 11 among Fig. 1 comprises that (end is connected with orientation/pitching/polarization transmission device orientation/pitching/polarization motor; The other end is connected with antenna controller 4) with orientation/pitching/polarization transmission device (end is connected with satellite antenna 1, and the other end is connected with orientation/pitching/polarization motor).Wherein, the rotation of antenna bearingt, pitching is driven by orientation/pitching motor.Antenna controller sends rotation command to orientation/pitching motor, and control azimuth/pitching motor rotates, and orientation/pitching motor drives orientation, elevating gear motion, thereby makes satellite antenna reflection surface in water level face and the motion of pitching face.The rotation of orientation/pitching motor has individual minimum value, so the rotation of satellite antenna reflection surface also has the minimum interval, so DC level can not reach accurate maximum.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (5)
1. satellite antenna tracking system with multiple receivers; Comprise satellite antenna (1), the low noise frequency converter (2) that is connected with said satellite antenna (1), the combined device (5) that is connected with said low noise frequency converter (2); It is characterized in that this system also comprises antenna controller (4) and n antenna track receiver, each antenna track receiver all is connected with said combined device (5); Said antenna controller (4) one ends are connected with said satellite antenna (1); The other end is connected with each antenna track receiver respectively, and said antenna controller (4) is used for selecting one tunnel signal as a reference from the n road signal that said n antenna track receiver exported according to the satellite reference signal of each autotracking, and adjusts said satellite antenna to satelloid according to this reference signal; Wherein, N=2, two antenna track receivers are beacon receiver (3-1) and DVB receiver (3-2), and said antenna controller (4) specifically is used for selecting the said signal of examining according to following mode:
When the difference of the DC level of said beacon receiver (3-1) output and beacon noise level greater than said antenna controller (4) during from the threshold value of satellite antenna (1) beacon signal that receives, the dc level signal that selection beacon receiver (3-1) is exported is as said reference signal; When the difference of the DC level of said DVB receiver (3-2) output and DVB noise level greater than said antenna controller (4) when satellite antenna (1) institute receives the threshold value of DVB signal, the dc level signal that selection DVB receiver (3-2) is exported is as said reference signal; When the difference of the DC level of beacon receiver (3-1) output and beacon noise level threshold value greater than said beacon signal; And the DC level of DVB receiver (3-2) output and the difference of DVB noise level are during greater than the threshold value of said DVB signal; The dc level signal of beacon receiver (3-1) output and the dc level signal of DVB receiver (3-2) output are compared, and big one of selection relative signal intensity is as said reference signal.
2. satellite antenna tracking system with multiple receivers as claimed in claim 1; It is characterized in that; Said beacon receiver (3-1) is connected with said antenna controller (4) through the RS232 serial ports, and said DVB receiver (3-2) is connected with said antenna controller (4) through the iic bus interface.
3. satellite antenna tracking system with multiple receivers as claimed in claim 1 is characterized in that, also is connected with A/D sampler (7) respectively between said beacon receiver (3-1) and DVB receiver (3-2) and the said antenna controller (4).
4. satellite antenna tracking system with multiple receivers as claimed in claim 1 is characterized in that, also comprises the modulator-demodulator (6) that is connected with said combined device (5).
5. like each described satellite antenna tracking system with multiple receivers of claim 1～4; It is characterized in that; Also comprise the polarization sensor (8), dipmeter (9) and the GPS receiver (10) that are connected between said satellite antenna (1) and the said antenna controller (4); Said polarization sensor (8) is used for feeding back to said antenna controller (4) the polarization position of said satellite antenna (1); Said dipmeter (9) is used to read the elevation angle of said satellite antenna (1) reflecting surface, and said GPS receiver (10) is used for confirming warp, the latitude of said satellite antenna (1) service position.
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| CN 201010227420 CN101908919B (en) | 2010-07-07 | 2010-07-07 | Satellite antenna tracking system with multiple receivers |
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| CN 201010227420 CN101908919B (en) | 2010-07-07 | 2010-07-07 | Satellite antenna tracking system with multiple receivers |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101714693B (en) * | 2009-10-21 | 2013-03-06 | 南京中网卫星通信股份有限公司 | Control method of satellite aligning system capable of selecting satellite search way |
| CN104023187A (en) * | 2013-02-28 | 2014-09-03 | 华东师范大学 | Satellite antenna control and reception decoding integrated device |
| CN104243066B (en) * | 2014-09-05 | 2016-06-01 | 航天东方红卫星有限公司 | A kind of follow the tracks of the program control of relay satellite and autotracking united mode test macro and method |
| CN105871394A (en) * | 2016-04-19 | 2016-08-17 | 桂林长海发展有限责任公司 | Receiving system and method for satellite tracking |
| CN106207396A (en) * | 2016-09-06 | 2016-12-07 | 广东高云半导体科技股份有限公司 | A kind of antenna for satellite communication in motion core control panel based on domestic FPGA and antenna tracking method |
| CN108417987B (en) * | 2018-02-01 | 2020-09-08 | 北京爱科迪通信技术股份有限公司 | Beacon threshold determination method for satellite antenna system |
| CN110838868B (en) * | 2019-10-25 | 2022-05-06 | 北京爱科迪通信技术股份有限公司 | Kaku double-frequency-band portable satellite earth station capable of being switched rapidly |
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Owner name: AKD COMMUNICATION TECHNOLOGY CO., LTD. Free format text: FORMER NAME: BEIJING AKD INFORMATION COMMUNICATIONS TECHNOLOGY CO., LTD. |
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