CN202394118U - Vehicle-mounted antenna, servo and front-end system for satellite communication - Google Patents
Vehicle-mounted antenna, servo and front-end system for satellite communication Download PDFInfo
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- CN202394118U CN202394118U CN2011205290784U CN201120529078U CN202394118U CN 202394118 U CN202394118 U CN 202394118U CN 2011205290784 U CN2011205290784 U CN 2011205290784U CN 201120529078 U CN201120529078 U CN 201120529078U CN 202394118 U CN202394118 U CN 202394118U
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Abstract
The utility model discloses a vehicle-mounted antenna, servo and front-end system for satellite communication, comprising an antenna system, a servo system and a communication front-end system, wherein the antenna system comprises an antenna array (1), an antenna installation and reflection plate (2), a bridge (3) and a power divider (4); the servo system comprises an azimuth transmission mechanism, a pitch transmission mechanism, a servo controller and a navigation system; and the communication front-end system comprises a power amplifier, a low-noise amplifier, a filter and a frequency converter, wherein the communication front-end system is connected with a communication terminal via a slip spring. The vehicle-mounted antenna, servo and front-end system for satellite communication disclosed by the utility model has the advantages of being short in capture time, fast in tracking response speed, high in tracking accuracy, without the need of recapture after the failure of tracking, independent in tracking and communication, convenient in use, simple in structure, good in stability, low in system cost, etc; and the vehicle-mounted antenna, servo and front-end system for satellite communication uses eight-element shaped array antennas, thus increasing the gains of the antennas and improving communication quality.
Description
Technical field
The utility model relates to a kind of onboard satellite communication sky and watches and front end system.
Background technology
At present, communication technology of satellite has obtained extensive promotion and application in a lot of fields, and the research of communication technology of satellite also becomes the important topic of Research on Communication Technology nowadays.Such as everybody knowledge; Satellite antenna communication system fixing on the ground only need be adjusted the antenna alignment satellite, just can carry out satellite communication easily, on carriers such as the automobile that moves, steamer; Owing to reasons such as turning to of the jolting of road, antenna carrier; Antenna can accurately not aimed at satellite, can't be in time, accurate receiving satellite signal, in order to solve the problem of " stabilized communication in the motion "; " communication in moving " technology is arisen at the historic moment, and the gordian technique of " communication in moving " is exactly that control is pointed in the tracking of satellite.
Existing " communication in moving " followed the tracks of sensing side and mainly is divided into active tracking and Passive Tracking dual mode, perhaps this two combination.Active tracking is meant that information such as the signal phase that utilizes communication counterpart, Strength Changes follow the tracks of; Passive Tracking is meant the signal of communication that does not need communication counterpart when following the tracks of; But the variation that utilizes sensors such as the attitude of carrier installed on self carrier, orientation, geographic position to come perception attitude of carrier orientation realizes the tracking to satellite thereby change the position of revising antenna more in real time according to these then.
Active tracking structure is simple, low price, but the signal capture time is long, tracking accuracy is not high, low-response, fearness block, after following the tracks of failure, need catch again, is not suitable for cdma communication system; Passive Tracking need be to square signal, be not afraid of and block, and tracking accuracy is relevant with Selection of Sensor, and the high more sensor cost of accuracy requirement is also just high more usually.
The utility model content
The purpose of the utility model is to solve existing vehicle-mounted satellite sky and watches the deficiency with front end system; Provide a kind of new and effective onboard satellite communication sky to watch and front end system, overcome that tradition sky watches that system acquisition time is long, tracking accuracy is not high, low-response, shortcoming such as after following the tracks of failure, need catch again.
The purpose of the utility model realizes through following technical scheme: a kind of onboard satellite communication sky is watched and front end system, and it comprises antenna system, servo-drive system and communication front-end system; Antenna system comprises that being installed in antenna installs the aerial array of reflecting plate one side, is installed in electric bridge and power splitter that antenna is installed the reflecting plate opposite side, and aerial array comprises the element antenna of eight groups of parallel arranged, and power splitter is connected with the communication front-end system; Servo-drive system comprise controller, navigational system, azimuth-drive motor driver, azimuth-drive motor, orientation gear train, orientation conducting slip ring, orientation code-disc, orientation null pick-up, pitching motor driver, pitching motor, pitching gear train, pitching code-disc and, pitching is spacing and null pick-up; The azimuth-drive motor driver links to each other with azimuth-drive motor; Azimuth-drive motor is connected with the orientation gear train; The pitching motor driver links to each other with pitching motor; Pitching motor is connected with the pitching gear train; Controller comprises main control chip, azimuth-drive motor driver interface, azimuth-drive motor encoder interfaces, orientation null pick-up interface, pitching motor driver interface, pitching motor encoder interfaces, pitching is spacing and null pick-up interface and communication interface, each interface of controller respectively with azimuth-drive motor driver, orientation code-disc, orientation null pick-up, pitching motor driver, pitching code-disc, pitching is spacing and null pick-up, navigational system are connected; The communication front-end system comprises power amplifier, LNA, wave filter and frequency converter, and the communication front-end system is connected with communication terminal through slip ring; Orientation gear train and pitching gear train respectively with the antenna system mechanical connection.
The beneficial effect of the utility model is: adopt eight cell array antennas, improved antenna gain, improved communication quality; During it line following, do not need the cooperation of communication counterpart, the acquiring satellite time is short, and tracking response speed is fast, and tracking accuracy is high, need not to catch again after following the tracks of failure, and easy to use, simple in structure, good stability, system cost are low.
Description of drawings
Fig. 1 is that the utility model aerial array is installed the mounting structure synoptic diagram on the reflecting plate at antenna;
Fig. 2 is the utility model array antenna system structural representation;
Fig. 3 is the utility model antenna system and communication front-end system syndeton schematic block diagram;
Fig. 4 is the utility model servo system structure schematic block diagram;
Fig. 5 is the utility model servo system controller structural representation block diagram;
Fig. 6 is the utility model course of work operational flowchart;
Among the figure, the 1-aerial array, the 2-antenna is installed reflecting plate, 3-electric bridge, 4-power splitter, 5-element antenna.
Embodiment
Further describe the technical scheme of the utility model below in conjunction with accompanying drawing: a kind of onboard satellite communication sky is watched and front end system, and it comprises antenna system, servo-drive system and communication front-end system.
Like Fig. 1, shown in Figure 2; Antenna system comprises that being installed in antenna installs the aerial array 1 of reflecting plate 2 one sides and be installed in electric bridge 3 and the power splitter 4 that antenna is installed reflecting plate 2 opposite sides; Aerial array 1 comprises the element antenna 5 of eight groups of parallel arranged, and antenna system is connected with the communication front-end system.
As shown in Figure 3, the communication front-end system comprises wave filter, LNA, power amplifier and frequency converter, and the communication front-end system is connected with communication terminal through slip ring.During emission, MF communication signal that communication terminal is come becomes high-frequency signal through frequency converter, through wave filter and power amplifier signal is carried out filtering and processing and amplifying then, after antenna system launch; During reception, become the MF communication signal through frequency converter again behind the high-frequency signal process LNA that antenna system receives, the wave filter, be sent to communication terminal at last.
As shown in Figure 4; Servo-drive system comprises controller, navigational system, azimuth-drive motor driver, azimuth-drive motor, orientation gear train, orientation code-disc, orientation null pick-up, pitching motor driver, pitching motor, pitching gear train, pitching code-disc and pitching is spacing and null pick-up; The azimuth-drive motor driver links to each other with azimuth-drive motor; Azimuth-drive motor is connected with the orientation gear train, and the pitching motor driver links to each other with pitching motor, and pitching motor is connected with the pitching gear train.
As shown in Figure 5; Controller comprises main control chip, azimuth-drive motor driver interface, azimuth-drive motor encoder interfaces, orientation null pick-up interface, pitching motor driver interface, pitching motor encoder interfaces, pitching is spacing and null pick-up interface and communication interface, each interface of controller respectively with azimuth-drive motor driver, orientation code-disc, orientation null pick-up, pitching motor driver, pitching code-disc, pitching is spacing and null pick-up, navigational system are connected.
As shown in Figure 6, the course of work with front end system is watched in the onboard satellite communication sky, and it may further comprise the steps:
(1) startup self-detection: find out antenna with respect to the pitching of carrier and the zero message of orientation angles;
(2) obtain vehicle attitude, positional information: attitude that navigational system perception vehicle is current and positional information, and pass to controller through communication interface;
(3) obtain orientation and the luffing angle of antenna with respect to vehicle: controller reads the output of scrambler, in conjunction with the zero message of antenna pitching and orientation angles, calculates orientation and the angle of pitch of antenna with respect to carrier;
(4) coordinate transform: controller combines the azimuth information of vehicle attitude, positional information and satellite to calculate position angle and the angle of pitch of satellite with respect to vehicle;
(5) control antenna turns to: controller calculates difference between the orientation, the angle of pitch of orientation, the angle of pitch and the antenna of satellite, and drives azimuth-drive motor according to this difference and drive antenna towards the direction rotation of pointing to satellite with pitching motor;
(6) antenna bearingt status checking: the orientation and the spacing information of pitching of controller inspection antenna, the rotation of avoiding antenna exceed safe range and cause the damage of system;
(7) repeating step (2)～(6).
After it comprises that also a communication terminal becomes high-frequency signal with the MF communication signal through frequency converter, again through wave filter and power amplifier, after the step that antenna system is launched; After receiving the satellite-signal of high frequency with an antenna system, the high frequency satellite-signal passes through LNA, wave filter and frequency converter successively, obtains the MF communication signal and sends to the step of communication terminal.
In the total system course of work, servo-drive system and communication system work alone, and antenna has nothing to do to the tracking of satellite and the signal of communication quality and the intensity of antenna itself.
Claims (1)
1. an onboard satellite communication sky is watched and front end system, it is characterized in that: it comprises antenna system, servo-drive system and communication front-end system; Antenna system comprises that being installed in antenna installs the aerial array (1) of reflecting plate (2) one sides, is installed in electric bridge (3) and power splitter (4) that antenna is installed reflecting plate (2) opposite side; Aerial array (1) comprises the element antenna (5) of eight groups of parallel arranged, and power splitter (4) is connected with the communication front-end system; Servo-drive system comprise controller, navigational system, azimuth-drive motor driver, azimuth-drive motor, orientation gear train, orientation conducting slip ring, orientation code-disc, orientation null pick-up, pitching motor driver, pitching motor, pitching gear train, pitching code-disc and, pitching is spacing and null pick-up; The azimuth-drive motor driver links to each other with azimuth-drive motor; Azimuth-drive motor is connected with the orientation gear train; The pitching motor driver links to each other with pitching motor; Pitching motor is connected with the pitching gear train; Controller comprises main control chip, azimuth-drive motor driver interface, azimuth-drive motor encoder interfaces, orientation null pick-up interface, pitching motor driver interface, pitching motor encoder interfaces, pitching is spacing and null pick-up interface and communication interface, each interface of controller respectively with azimuth-drive motor driver, orientation code-disc, orientation null pick-up, pitching motor driver, pitching code-disc, pitching is spacing and null pick-up, navigational system are connected; The communication front-end system comprises power amplifier, LNA, wave filter and frequency converter, and the communication front-end system is connected with communication terminal through slip ring; Orientation gear train and pitching gear train respectively with the antenna system mechanical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205290784U CN202394118U (en) | 2011-12-16 | 2011-12-16 | Vehicle-mounted antenna, servo and front-end system for satellite communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205290784U CN202394118U (en) | 2011-12-16 | 2011-12-16 | Vehicle-mounted antenna, servo and front-end system for satellite communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202394118U true CN202394118U (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205290784U Expired - Lifetime CN202394118U (en) | 2011-12-16 | 2011-12-16 | Vehicle-mounted antenna, servo and front-end system for satellite communication |
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| Country | Link |
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| CN (1) | CN202394118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386962A (en) * | 2011-12-16 | 2012-03-21 | 成都创亿嘉科技有限公司 | Vehicle-mounted satellite communication sky servo and front-end system and method thereof |
-
2011
- 2011-12-16 CN CN2011205290784U patent/CN202394118U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386962A (en) * | 2011-12-16 | 2012-03-21 | 成都创亿嘉科技有限公司 | Vehicle-mounted satellite communication sky servo and front-end system and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |