CN1897488A - Vehicle satellite telecommunication automatic seeking method - Google Patents
Vehicle satellite telecommunication automatic seeking method Download PDFInfo
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- CN1897488A CN1897488A CN 200610085501 CN200610085501A CN1897488A CN 1897488 A CN1897488 A CN 1897488A CN 200610085501 CN200610085501 CN 200610085501 CN 200610085501 A CN200610085501 A CN 200610085501A CN 1897488 A CN1897488 A CN 1897488A
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Abstract
The method comprises: in the first, when the antenna runs at a calculated direction, it detects the AGC voltage value to decide its tracing state to satellite signals; if it is less than a preset value, then based on a setting by the program the satellite antenna driver automatically adjusts the direction of the antenna and makes HUI-shaped search; AGC voltage value is red out at each stop until an AGC voltage value exceeding the preset threshold is found; then using a decussating approach to make scan in order to get a point with highest AGC voltage; finally adjusting polarization angle and keeping the AGC voltage value at an extreme value.
Description
Technical field
The present invention relates to a kind of satellite telecommunication automatic seeking method, relate in particular to a kind of vehicle satellite telecommunication automatic seeking method.
Background technology
At present, what adopt usually in the satellite communication method for searching star is the method that receives satellite beacon signals, and the angle of pitch, azimuth and the polarizing angle of adjusting antenna are realized the optimum reception location of antenna.Beacon signal narrow bandwidth in practical operation is not easy to catch, and is disturbed easily, and is high to the response requirement of system.In addition, often be used for the star equipment of seeking of satellite communication according to method for searching star, can adopt the beacon signal receiver, this beacon signal receiver is relatively more expensive, and cost is the several times of channel signal receiver.
Summary of the invention
The objective of the invention is to solve the problems of the technologies described above, a kind of vehicle satellite telecommunication automatic seeking method that utilizes channel signal to carry out automatic star-seeking is provided.
Realize the device of vehicle satellite telecommunication automatic seeking method of the present invention, as shown in Figure 2, comprise antenna module and antenna control assembly, the antenna control assembly comprises the satellite antenna driver, the satellite antenna controller, global positioning system, electronic compass, handle controller, local area network (LAN), above-mentioned satellite antenna controller comprises satellite-signal receiving card, satellite-signal AGC (automatic gain control) voltage receiving card, master control borad, handle controller is connected to local area network (LAN) by its network interface, local area network (LAN) connects master control borad by the network interface on the master control borad, the parallel port of the parallel port of each servo step motor and master control borad is connected in the antenna module, the serial port of stellar-based global-positioning system and electronic compass is connected with the serial port of master control borad respectively, the F type connector assembly of frequency converter is connected by the F type connector assembly of cable and satellite-signal receiving card in the antenna module, two core sockets of the two core sockets of satellite-signal receiving card and number receiving card 10 of satellite-signal AGC (automatic gain control) voltage receiving card and two core sockets of satellite-signal AGC (automatic gain control) voltage receiving card 11 are connected, the pci interface of satellite-signal receiving card 10 is connected with the pci interface of master control borad 12, the parallel port of satellite-signal AGC (automatic gain control) voltage receiving card 11 is connected with the parallel port of master control borad 12, the parallel port of master control borad 12 is connected with the parallel port of satellite antenna driver 8, and the driving interface of satellite antenna driver 8 is connected with the driving interface of each servo step motor in the antenna module.
Operation principle of the present invention is as follows:
Satellite communication antena automatic seeker of the present invention, can under two kinds of patterns, seek star, these two kinds of patterns are automatic star-seeking patterns and manually seek the star pattern, system keeps in automatic star-seeking manually seeks the star function, because the residing place of satellite car may be because the interference of the factor of various electromagnetic environments, the correctness that influences the speed of automatic star-seeking or seek star, can artificially get rid of above-mentioned interference signal with the mode of manually seeking star this moment, guarantees to seek the accuracy of star to channel.Therefore, when needs are manually controlled, can not pass through local area network (LAN) between above-mentioned handle controller 15 and the master control borad 12, directly the RS/2 interface with its RS/2 interface and master control borad 12 is connected; Also can pass through cable LAN, its RJ45 interface is connected with cable LAN, the RJ45 interface of cable LAN and master control borad 12 is connected; Also can pass through WLAN (wireless local area network), its RJ45 interface is connected with WLAN (wireless local area network), the RJ45 interface of WLAN (wireless local area network) and master control borad 12 is connected.
Antenna satellite antenna controller 9 is key control units of vehicle satellite telecommunication automatic seeking method, external global positioning system (hereinafter to be referred as GPS) 13, electronic compass 14, satellite antenna driver 8.Satellite antenna controller 9 comprises satellite-signal receiving card 10, satellite-signal automatic gain control (Automatic Gain Control, hereinafter to be referred as AGC) voltage receiving card 11, master control borad 12, contain network interface on its master control borad 12, handle controller 15 is connected on the satellite antenna controller 9 by network interface.Manually seeking under the star pattern, satellite antenna controller 9 can be accepted the instruction from handle, the in house software program of antenna controller 9 is resolved the order of handle controller via satellite, control satellite antenna driver 8, antenna module is implemented control, finish the action of manually seeking under the star pattern.
The primary control program of satellite antenna controller 9 comprises following a few fatware module on function:
Satellite-signal receiver module:, gather the satellite-signal AGC voltage strength state of satellite-signal AGC voltage receiving card 11 by parallel port.
Breath.
Electronic compass information receiving module: by serial port, receive azimuth information, obtain orientation, pitching and the roll attitude data of satellite car and antenna from electronic compass.
Spacing detecting module: by the control bit of parallel port; detection is from four limit switch information: i.e. and the polarization left limit switch of the pitching lower position switch of the left and right sides, the orientation limit switch of azimuth-drive motor, pitching motor, polarization motor, play the effect of limit position limitation protection.
Information sending module: with system acquisition to the information such as attitude, satellite-signal intensity of locating information, satellite car of satellite car send to handle controller by interface.
The order receiver module: explain the order from the handle controller control end, the notice main processing block is finished corresponding operation.
Interface module: the interface that is used to connect satellite antenna controller and handle controller.
The host computer module: the theoretical orientation of finishing antenna pitching, orientation, polarizing angle is calculated.Finish the driving of antenna movement step pitch, simultaneously memory antenna operating path distance.
Motor-driven pulsing module: receive the control information from the host computer module, be converted into the pulse signal of control step motor, the key of this module is to want accurate control impuls time and motor accelerator.Pulse signal sends data by the control bit of parallel port.
Main processing block is control and the maincenter that is connected above-mentioned module.
The program of handle controller comprises following a few fatware module:
Main processing block: the control interface of whole system is provided, receives control personnel's control command, the information of finishing shows.
Information receiving module: reception and explanation show by main processing block from the display message of main control computer.
Order sending module: finish the control command coding, send to the satellite antenna controller by interface.
The above-mentioned control procedure graph of a relation of seeking the star procedure module as shown in figure 13.
In vehicle satellite telecommunication automatic seeking method of the present invention, above-mentioned software module part and hardware components are combined, be summarized as following control procedure:
Behind the program start, receiving world locational system (GPS) information at first, obtain the information of satellite car current location, mainly contain longitude, latitude and elevation information, then, receive electronic compass data, utilize electronic compass to obtain the current attitude information of satellite car and antenna: to mainly contain azimuth, the angle of pitch and roll attitude, finish the calculating that reception antenna points to the orientation set of data automatically.
Under the automatic star-seeking pattern, at first antenna runs to the direction of calculating, detects the numerical value of AGC voltage, differentiate the tracking mode of seeking the star signal, if less than predetermined value, seek star driven antenna direction according to the setting automatic adjustment of antenna driver via satellite of program, do the search of Back Word type, the AGC voltage value that every step pitch interpretation is new, until the position of finding above threshold point, remake cross search, until AGC voltage value maximum, adjust polarizing angle then, the AGC voltage value is retained in extreme value.Seek star azimuth, the angle of pitch, polarizing angle state the best, the signal quality maximum of Xian Shiing simultaneously this moment.
Manually seeking under the star pattern, indication according to the signal quality on the handle controller handle (generally requiring about 65%), with crawl (0.1 degree/step pitch) or continuous type of drive, the pointing direction of control antenna, in the hope of index signal intensity on the handle controller display is maximum, as the basis for estimation of seeking the star optimum state.At this moment, seeking star finishes.
Compared with prior art, the present invention has following advantage:
Satellite-signal receiving card in the above-mentioned method for searching star adopts general satellite data receiving card, it is the channel signal receiver, reception is from the channel signal of the L-band of antenna module frequency converter output, take out the strong and weak relevant AGC voltage value of channel signal therewith, be sent to satellite-signal AGC voltage receiving card, judge that the sign of seeking star is not a beacon signal, but channel signal, the channel signal bandwidth is wide, catches easily, and speed is fast, system requirements is low, be not subject to disturb, seek star reliability height, can realize seeking apace star.
In addition, the composition of channel signal receiver is lower than beacon signal receiver cost, the low price several times.The present invention simultaneously keeps in automatic star-seeking and manually seeks the star function, has the automatic star-seeking pattern and manually seeks two kinds of working methods of star pattern, can guarantee to seek the accuracy of star to channel more.
Description of drawings
Fig. 1 is the software flow pattern of automatic star-seeking method.
Fig. 2 is the circuit block diagram of satellite communication antena automatic seeker.
Fig. 3 is the workflow diagram of satellite-signal AGC voltage receiving card.
Embodiment
As shown in Figure 1, a kind of vehicle satellite telecommunication automatic seeking method comprises following steps:
The first step: after car arrival target location stopped, master control borad 12 carried out initialization;
Second step: master control borad 12 obtains the positional information of satellite car by global positioning system (GPS) 13, comprises longitude, latitude and elevation information;
The 3rd step: master control borad 12 obtains the azimuth information of satellite car and antenna by electronic compass 14, comprises orientation, pitching and roll attitude data;
The 4th step: the host computer module of master control borad 12 is according to following computing formula, calculates the theoretical position sensing value of antenna elevation angle in the target location, azimuth, polarizing angle,
P＝tg-1(sinα/tgβ)
α=(car location longitude Φ 2-satellite place longitude Φ 1) wherein, β is a car place latitude, and r is an earth radius, and R is the geo-stationary orbit radius, and A is the azimuth, and E is the angle of pitch, and P is a polarizing angle;
The 5th step: master control borad 12 calculates the pitching umber of pulse according to the theoretical position value of antenna elevation angle, drives the theoretical position that satellite antenna driver 8 makes the antenna direction angle of pitch;
The 6th step: master control borad 12 is according to the theoretical position value of antenna azimuth, and the computer azimuth umber of pulse drives satellite antenna driver 8 and makes the azimuthal theoretical position of antenna direction;
The 7th step: after antenna arrives predetermined theoretical position,, do the search of Back Word type, find AGC voltage to surpass the location point of predetermined threshold, stop the search of Back Word type this moment according to the intensity of the AGC voltage signal of real-time collection;
The 8th step: do cross scanning at the location point that surpasses predetermined threshold, try to achieve the maximum value position point of satellite-signal AGC voltage;
The 9th step: adjust polarizing angle, the automatic star-seeking process finishes.
The AGC voltage signal of above-mentioned collection is the voltage signal relevant with its channel signal that takes out behind the channel signal of satellite-signal receiving card 10 receptions from the L-band of frequency converter in the antenna module.
Star also can be sought at any time manually by system.
Below, with reference to Fig. 1, set forth the star process of seeking under the automatic star-seeking pattern of the present invention:
The first step, after car arrival target location stopped, master control borad 12 carried out initialization, promptly stops the action of all servo step motors.
In second step, master control borad 12 obtains the positional information of satellite car by global positioning system (GPS) 13, comprises longitude, latitude and elevation information.
In the 3rd step, master control borad 12 obtains the azimuth information of satellite car and antenna by electronic compass 14, comprises orientation, pitching and roll attitude data.
In the 4th step, the host computer module of master control borad 12 is according to following computing formula:
P=tg-1 (sin α/tg β) calculates the theoretical position value of antenna elevation angle, azimuth, polarizing angle, wherein α=(car location longitude Φ 2-satellite place longitude Φ 1); β is a car place latitude; R is an earth radius; R is the geo-stationary orbit radius; A is the azimuth; E is the angle of pitch; P is a polarizing angle.
In the 5th step, master control borad 12 calculates the pitching umber of pulse according to the theoretical position value of antenna elevation angle, drives the theoretical position that satellite antenna driver 8 makes the antenna direction angle of pitch.
This step is because record by experiment repeatedly by the inventor, the interference minimum on the pitch orientation, and level is relatively stable, and error is no more than ± and 1 °.
In the 6th step, master control borad 12 is according to the theoretical position value of antenna azimuth, and the computer azimuth umber of pulse drives the theoretical position that satellite antenna driver 8 makes the antenna direction orientation.Here the inventor adopts the theoretical position that makes the antenna direction angle of pitch earlier, make the reason of the azimuthal theoretical position of antenna direction be that azimuth direction is subject to disturb most again, be subjected to the earth magnetism environmental impact bigger, uncertain factor is more, and the pitch orientation interference is less, relatively stable.
The 7th step, after antenna arrives predetermined theoretical position, detect the intensity of AGC voltage, do the search of Back Word type earlier, find AGC voltage to surpass the location point of predetermined threshold, stop the search of Back Word type this moment.
Gather AGC voltage in real time, to master control borad 12 transmission, the master control borad control antenna is done the scanning of Back Word type, and promptly first control antenna carries out the scanning of horizontal direction, if AGC voltage surpasses the predetermined threshold of voltage, then note the threshold position of AGC voltage, if do not surpass the predetermined threshold of AGC voltage, then control antenna moves a step pitch on pitch orientation, proceeds horizontal sweep again, so circulation is gone down, and arrives threshold value until AGC voltage.Above-mentioned detection AGC voltage is finished by satellite antenna receiving card 10 and satellite-signal AGC voltage receiving card 11.The L-band channel signal that above-mentioned satellite antenna receiving card 10 receives from 4 outputs of antenna module frequency converter takes out and the strong and weak AGC voltage of its channel signal, is input to satellite-signal AGC voltage receiving card 11.Above-mentioned satellite antenna receiving card 10 is connected with control bus with the data/address bus of master control borad 12 by the PCI standard sockets, by master control borad 12 its operating state is preset and is provided with, and it is operated under the predetermined satellite channel parameter condition.At this moment, the channel signal of 10 pairs of L-bands of satellite antenna receiving card receives and demodulation, restores modulation signal.In the reduction process, produce the AGC voltage relevant with the L-band signal strength signal intensity, promptly the size of AGC voltage is represented the power of satellite channel signal, and this signal is delivered to satellite-signal AGC receiving card 11, in satellite-signal AGC receiving card 11, amplify, and convert digital signal to.
As shown in Figure 3, the groundwork of the handling procedure of satellite-signal AGC voltage receiving card 11 inside has only one: the AGC voltage of promptly gathering the simulation of satellite antenna receiving card 10 in real time, carry out after the analog-to-digital conversion to the periphery that master control borad transmits, remove to gather new AGC voltage behind the end of transmission again.The beat of conversion is determined by clock, in each conversion and output procedure, has increased the differentiation to AGC magnitude of voltage size, differentiates and divides 4 grades: surpass 16, show 1 LED, surpass 48, show 2 LED, surpass 80, show 3 LED, surpass 112, show 4 LED.The numeric reference point of above-mentioned division is provided with according to 8-bit microprocessor 256 resolution.
The 8th step, find above behind the position of threshold value, carry out cross scanning in this place again, promptly carry out the horizontal sweep of antenna earlier, note this AGC voltage max position, antenna moves to the point of maximum intensity position of the satellite channel signal of horizontal direction, carries out vertical scanning again, note AGC voltage max position, antenna moves to the point of maximum intensity position of the satellite channel signal of pitch orientation.
The 9th step, when the antenna angle of pitch and azimuthal finish best the adjustment after, carry out the adjustment of polarizing angle again, this is because the direction of polarizing angle is least responsive.Seek star azimuth, the angle of pitch, polarizing angle state the best, the signal quality maximum of Xian Shiing simultaneously this moment.The automatic star-seeking process finishes.
Manually seek star process and above-mentioned automatic star-seeking similar process, can send control command to satellite antenna controller 9 in every way by handle controller 15, manually control antenna finds the point of maximum intensity position of satellite channel signal.
Claims (3)
1, a kind of vehicle satellite telecommunication automatic seeking method is characterized in that, comprises following steps:
The first step: after car arrival target location stopped, master control borad 12 carried out initialization;
Second step: master control borad 12 obtains the positional information of satellite car by global positioning system (GPS) 13, comprises longitude, latitude and elevation information;
The 3rd step: master control borad 12 obtains the azimuth information of satellite car and antenna by electronic compass 14, comprises orientation, pitching and roll attitude data;
The 4th step: the host computer module of master control borad 12 is according to following computing formula, calculates the theoretical position sensing value of antenna elevation angle in the target location, azimuth, polarizing angle,
P＝tg-1(sinα/tgβ)
α=(car location longitude Φ 2-satellite place longitude Φ 1) wherein, β is a car place latitude, and r is an earth radius, and R is the geo-stationary orbit radius, and A is the azimuth, and E is the angle of pitch, and P is a polarizing angle;
The 5th step: master control borad 12 calculates the pitching umber of pulse according to the theoretical position value of antenna elevation angle, drives the theoretical position that satellite antenna driver 8 makes the antenna direction angle of pitch;
The 6th step: master control borad 12 is according to the theoretical position value of antenna azimuth, and the computer azimuth umber of pulse drives satellite antenna driver 8 and makes the azimuthal theoretical position of antenna direction;
The 7th step: after antenna arrives predetermined theoretical position,, do the search of Back Word type, find AGC voltage to surpass the location point of predetermined threshold, stop the search of Back Word type this moment according to the intensity of real-time collection AGC voltage;
The 8th step: do cross scanning at the location point that surpasses predetermined threshold, try to achieve the maximum value position point of satellite-signal AGC voltage;
The 9th step: adjust polarizing angle, the automatic star-seeking process finishes.
2, vehicle satellite telecommunication automatic seeking method according to claim 1 is characterized in that,
The AGC voltage signal of above-mentioned collection is the voltage signal relevant with its channel signal that takes out behind the channel signal of satellite-signal receiving card 10 receptions from the L-band of frequency converter in the antenna module.
3, vehicle satellite telecommunication automatic seeking method according to claim 1 is characterized in that,
Star also can be sought at any time manually by system.
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| CNB200610085501XA CN100546217C (en) | 2006-06-19 | 2006-06-19 | Vehicle satellite telecommunication automatic seeking method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138049A (en) * | 2011-11-28 | 2013-06-05 | 单维峰 | System and method for regulating angle and height of relay communication antenna and erecting relay communication antenna |
| CN104124529A (en) * | 2014-05-05 | 2014-10-29 | 北京星网卫通科技开发有限公司 | Satellite communication on the move antenna satellite finding method |
| CN104683011A (en) * | 2013-10-02 | 2015-06-03 | 想象技术有限公司 | Spectrum Scanning |
| CN104793623A (en) * | 2015-04-09 | 2015-07-22 | 深圳市宏腾通电子有限公司 | Simple satellite finding device |
| CN105514608A (en) * | 2016-01-18 | 2016-04-20 | 贵港市嘉特电子科技有限公司 | Mobile satellite receiving system |
| CN104681986B (en) * | 2015-02-16 | 2017-05-17 | 南京中网卫星通信股份有限公司 | Satellite finding method of satellite antenna in inclined state |
| CN109639337A (en) * | 2018-11-23 | 2019-04-16 | 南京控维通信科技有限公司 | Graphical auxiliary suitable for satellite communication equipment is to star method |
| CN112701476A (en) * | 2019-10-22 | 2021-04-23 | 成都恪赛科技有限公司 | Antenna device and control method thereof |
| CN113890598A (en) * | 2021-12-02 | 2022-01-04 | 四川九洲电器集团有限责任公司 | Hybrid scanning antenna tracking method, system, terminal and medium based on phased array |
| CN115566428A (en) * | 2022-10-11 | 2023-01-03 | 江苏领创星通卫星通信科技有限公司 | Satellite finding method, device, equipment and medium for communication-in-motion antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103138049A (en) * | 2011-11-28 | 2013-06-05 | 单维峰 | System and method for regulating angle and height of relay communication antenna and erecting relay communication antenna |
| CN104683011A (en) * | 2013-10-02 | 2015-06-03 | 想象技术有限公司 | Spectrum Scanning |
| CN104124529A (en) * | 2014-05-05 | 2014-10-29 | 北京星网卫通科技开发有限公司 | Satellite communication on the move antenna satellite finding method |
| CN104124529B (en) * | 2014-05-05 | 2016-08-24 | 北京星网卫通科技开发有限公司 | A kind of method for searching star of antenna for satellite communication in motion |
| CN104681986B (en) * | 2015-02-16 | 2017-05-17 | 南京中网卫星通信股份有限公司 | Satellite finding method of satellite antenna in inclined state |
| CN104793623A (en) * | 2015-04-09 | 2015-07-22 | 深圳市宏腾通电子有限公司 | Simple satellite finding device |
| CN105514608A (en) * | 2016-01-18 | 2016-04-20 | 贵港市嘉特电子科技有限公司 | Mobile satellite receiving system |
| CN109639337A (en) * | 2018-11-23 | 2019-04-16 | 南京控维通信科技有限公司 | Graphical auxiliary suitable for satellite communication equipment is to star method |
| CN112701476A (en) * | 2019-10-22 | 2021-04-23 | 成都恪赛科技有限公司 | Antenna device and control method thereof |
| CN113890598A (en) * | 2021-12-02 | 2022-01-04 | 四川九洲电器集团有限责任公司 | Hybrid scanning antenna tracking method, system, terminal and medium based on phased array |
| CN115566428A (en) * | 2022-10-11 | 2023-01-03 | 江苏领创星通卫星通信科技有限公司 | Satellite finding method, device, equipment and medium for communication-in-motion antenna |
| CN115566428B (en) * | 2022-10-11 | 2023-11-17 | 江苏领创星通卫星通信科技有限公司 | Star finding method, device, equipment and medium for communication-in-motion antenna |
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