CN1897489A - Automatic gain-controlled voltage receiver of satellite signal - Google Patents
Automatic gain-controlled voltage receiver of satellite signal Download PDFInfo
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- CN1897489A CN1897489A CN 200610085503 CN200610085503A CN1897489A CN 1897489 A CN1897489 A CN 1897489A CN 200610085503 CN200610085503 CN 200610085503 CN 200610085503 A CN200610085503 A CN 200610085503A CN 1897489 A CN1897489 A CN 1897489A
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Abstract
The invention comprises a satellite signals receiving card and a satellite signals voltage receiving card with automatically gain-controlling. The satellite signals voltage receiving card with automatically gain-controlling comprises an integrated amplifier, a gain/level adapter and a MPU comprising an A/D converter. The satellite signals receiving card receives the L band channel signals outputted from the frequency converter in the antenna assembly and extracts the AGC voltage relating to signal strength; the AGC voltage is outputted to the in-phase input end of the integrated amplifier; the output end of the integrated amplifier is fed back to the inverse input end of the integrated amplifier through the gain/level adapter and is connected to the input end of the MPU in order to output the digital signals converted by A/D converter from I/O port of the MPU.
Description
Technical field
The present invention relates to a kind of satellite communication antena automatic seeker, relate in particular to a kind of automatic gain-controlled voltage receiver of satellite signal.
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 automatic gain-controlled voltage receiver of satellite signal that utilizes channel signal to carry out automatic star-seeking is provided.
A kind of automatic gain-controlled voltage receiver of satellite signal, comprise satellite-signal receiving card and satellite-signal AGC (automatic gain control) voltage receiving card, satellite-signal AGC (automatic gain control) voltage receiving card comprises integrated amplifier, gain/level adapted device, microprocessor, wherein microprocessor contains the A/D converting unit, satellite antenna receiving card receives the L-band channel signal from the output of antenna module frequency converter, take out the in-phase input end that the AGC voltage relevant with its intensity outputs to integrated amplifier, the output of integrated amplifier feeds back to the inverting input of integrated amplifier by gain/level adapted device, connect the input of microprocessor simultaneously, from the digital AGC signal of I/O output output after the conversion of A/D converting unit of microprocessor.
Compared with prior art, the present invention has following advantage:
Above-mentioned satellite-signal receiving card adopts general satellite data receiving card, and promptly the channel signal receiver receives the channel signal from 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 cost 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 circuit block diagram of automatic gain-controlled voltage receiver of satellite signal.
Fig. 2 is the physical circuit figure of satellite-signal AGC voltage receiving card.
Fig. 3 is satellite-signal AGC voltage receiving card software workflow figure.
Embodiment
As shown in Figure 1, a kind of automatic gain-controlled voltage receiver of satellite signal, comprise satellite-signal receiving card 10 and satellite-signal AGC (automatic gain control) voltage receiving card 11, satellite-signal AGC (automatic gain control) voltage receiving card 11 comprises integrated amplifier 111, gain/level adapted device 112, microprocessor 113, wherein microprocessor 113 contains the A/D converting unit, the L-band channel signal that satellite antenna receiving card 10 receives from the output of antenna module frequency converter, take out the in-phase input end that the AGC voltage relevant with its intensity outputs to integrated amplifier, the output of integrated amplifier feeds back to the inverting input of integrated amplifier by gain/level adapted device, connect the input of microprocessor simultaneously, from the digital AGC signal of I/O output output after the conversion of A/D converting unit of microprocessor.
With reference to Fig. 2, above-mentioned satellite-signal AGC (automatic gain control) voltage receiving card 11, its gain level adapter 112 is by two fixed resistance R5, R4 and variable resistor R11 composition that is connected in series, the end of the activity termination R1 of variable resistor R11, the in-phase input end of another termination integrated amplifier LM324 of R1, the end of variable-resistance activity termination R2 of while, the inverting input of another termination integrated amplifier LM324 of R2, the output of integrated amplifier LM324 connects the integrated amplifier inverting input by resistance R 3, and the output of integrated amplifier also connects the A/D input of microprocessor STC12C2052AD simultaneously.
This device is finished the target that the satellite-signal AGC (automatic gain control) voltage receives under the support of peripheral master control borad.
As illustrated in fig. 1 and 2, the L-band channel signal that satellite antenna receiving card 10 receives from the output of antenna module frequency converter, take out and the strong and weak AGC voltage of its channel signal, receive the in-phase input end 1115 of integrated amplifier 111, the output of integrated amplifier feeds back to the inverting input of integrated amplifier by resistance R 3, the A/D input of the output termination microprocessor of while integrated amplifier, export through the digital AGC signal after the A/D cell translation from the I/O output of microprocessor through the microprocessor internal software processes, this signal is by port L111, L112, L113, L114, L115, the L116 data wire is delivered to the parallel port end of master control borad 12.
In addition, L-band satellite channel signal from the antenna part frequency converter is sent into satellite-signal receiving card 10 inputs, satellite antenna receiving card 10 is connected with control bus by the data/address bus of PCI standard sockets with the periphery, operating state to satellite antenna receiving card presets and is provided with, and it is operated under the predetermined satellite channel parameter condition.At this moment, satellite antenna receiving card receives and demodulation the channel signal of L-band, restores modulation signal.In the reduction process, produce the AGC voltage relevant with the L-band signal strength signal intensity, it is the power that the size of AGC voltage is represented the satellite channel signal, this signal is delivered to satellite-signal AGC receiving card 11, in the in-phase end input and the amplification of integrated amplifier 111, the end of oppisite phase input gain level adapted voltage of integrated amplifier is in order to adjust the starting voltage that AGC amplifies, voltage when signal is the strongest generally selects this magnitude of voltage between 3～4V by the decision of resistance R 3/R2 numerical value.Satellite-signal receiving card 10 adopts the Utility Satellite data receiver cards among the present invention, as Shenzhen through the sky 320 cards, go up wide card in Hainan or the like.
The collection of AGC voltage is carried out continuously, and the microprocessor that includes A/D converter is finished the digital translation of AGC voltage automatic cycle under timeticks, and this function also can be added general micro controller and finish by independent A/D converter.Digital AGC voltage signal after the conversion enters peripheral program participation calculating and driven antenna and makes corresponding action by the I/O port output of microprocessor.
As shown in Figure 2, in order to indicate the operating state of automatic gain-controlled voltage receiver of satellite signal, also increased the signal quality indication output of seeking star, indicate on the device panel with 4 LED, these four LED connect with port one 109,1110,1111,1112 respectively, what increase simultaneously also has the ready indication of peripheral system program (connectivity port 1113) and seeks the indication (connectivity port 1114) that star finishes, and all is by the LED display routine running status on the device panel.
Fig. 3 is satellite-signal AGC voltage receiving card software workflow figure.
In the software flow of Fig. 3 as can be seen, the 11 basic work of satellite-signal AGC (automatic gain control) voltage receiving card have only one: AGC voltage is carried out digital translation continuously, and master control borad output to the periphery, promptly gather the AGC voltage of simulation 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.
To 4 grades that AGC differentiates, be to consider the requirement of using 8-bit microprocessor can satisfy resolution, also can adopt 8 or above resolution A/D transducer and microprocessor here.The setting of 4 LED indication ratios, mainly consider when not seeking satellite-signal, AGC voltage is very little, fractional value AGC voltage for the ease of the indicating channel edge, segmentation scales has been done division as above, after entering channel, program can be finished peaked search and maintenance automatically, and do not needed artificial judgement and interfered this moment.
Claims (2)
1, a kind of automatic gain-controlled voltage receiver of satellite signal is characterized in that,
Comprise satellite-signal receiving card 10 and satellite-signal AGC (automatic gain control) voltage receiving card 11, satellite-signal AGC (automatic gain control) voltage receiving card 11 comprises integrated amplifier 111, gain/level adapted device 112, microprocessor 113, wherein microprocessor 113 contains the A/D converting unit, the L-band channel signal that satellite antenna receiving card 10 receives from the output of antenna module frequency converter, take out the in-phase input end that the AGC voltage relevant with its intensity outputs to integrated amplifier, the output of integrated amplifier feeds back to the inverting input of integrated amplifier by gain/level adapted device, connect the input of microprocessor simultaneously, from the digital AGC signal of I/O output output after the conversion of A/D converting unit of microprocessor.
2, automatic gain-controlled voltage receiver of satellite signal according to claim 1 is characterized in that,
Above-mentioned satellite-signal AGC (automatic gain control) voltage receiving card 11, its gain level adapter 112 is by two fixed resistance R5, R4 and variable resistor R11 composition that is connected in series, the end of the activity termination R1 of variable resistor R11, the in-phase input end of another termination integrated amplifier LM324 of R1, the end of variable-resistance activity termination R2 of while, the inverting input of another termination integrated amplifier LM324 of R2, the output of integrated amplifier LM324 connects the integrated amplifier inverting input by resistance R 3, and the output of integrated amplifier also connects the A/D input of microprocessor STC12C2052AD simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100855039A CN100546218C (en) | 2006-06-19 | 2006-06-19 | Automatic gain-controlled voltage receiver of satellite signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100855039A CN100546218C (en) | 2006-06-19 | 2006-06-19 | Automatic gain-controlled voltage receiver of satellite signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1897489A true CN1897489A (en) | 2007-01-17 |
| CN100546218C CN100546218C (en) | 2009-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100855039A Expired - Fee Related CN100546218C (en) | 2006-06-19 | 2006-06-19 | Automatic gain-controlled voltage receiver of satellite signal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219766A (en) * | 2013-06-03 | 2014-12-17 | 中国人民解放军理工大学 | Method for determining nonuniform link gain of flexible forwarding satellite system |
-
2006
- 2006-06-19 CN CNB2006100855039A patent/CN100546218C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219766A (en) * | 2013-06-03 | 2014-12-17 | 中国人民解放军理工大学 | Method for determining nonuniform link gain of flexible forwarding satellite system |
| CN104219766B (en) * | 2013-06-03 | 2018-04-03 | 中国人民解放军理工大学 | The flexible non-homogeneous channel link gain determination method of repeater satellite system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100546218C (en) | 2009-09-30 |
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Effective date of registration: 20180830 Address after: 210032 two building, B 9, Gaoxin two road, Nanjing hi tech Development Zone, Jiangsu Patentee after: Nanjing Hua Ye Intelligent Technology Co., Ltd. Address before: 210000 9 high tech 2 Road, Nanjing Development Zone, Nanjing, Jiangsu. Patentee before: Zhongwang Communication Co., Ltd., Nanjing |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20090930 Termination date: 20180619 |