CN102843113A - Down converter gain control method - Google Patents
Down converter gain control method Download PDFInfo
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- CN102843113A CN102843113A CN2012103456746A CN201210345674A CN102843113A CN 102843113 A CN102843113 A CN 102843113A CN 2012103456746 A CN2012103456746 A CN 2012103456746A CN 201210345674 A CN201210345674 A CN 201210345674A CN 102843113 A CN102843113 A CN 102843113A
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Abstract
The invention discloses a down converter gain control method. The method comprises the following steps: receiving an input signal; judging whether the input signal is valid; if the input signal is valid, then processing the input signal and corresponding to a down converter event represented by the input signal; combining a signaling according to the down converter event; and transmitting the signaling to a down converter. The down converter gain control method disclosed by the invention has the advantages of enhancing the controllability of conversion process by selecting the down converter event via the input signal, and providing multiple automatic or hand operated output modes which can be selected as required, thus the attenuation gain output stability is enhanced.
Description
Technical field
The present invention relates to wireless communication field, be specifically related to a kind of low-converter gain control method to the satellite mobile communication terminal.
Background technology
Satellite mobile communication system is divided into stationary orbit, middle orbit and low-orbit satellite GSM usually.The maximum characteristics of satellite mobile communication system are; Utilize the multiaddress transmission means of satellite communication; For global user provide large span, on a large scale, the at a distance mobile communication service of roaming service and maneuverability; Be the expansion and the extension of land cellular mobile communications system, be suitable for very much remote districts, mountain area, island, disaster area, ocean ship and communicate by letter with the oceangoing voyage aircraft.
The signal that satellites transmits goes out is a high-frequency communication signal; And the used signal in ground is a low frequency communication signal; Behind the satellite-signal that receives, needing via satellite, mobile communication terminal converts high-frequency communication signal into ground communication employed low frequency communication signal through low-converter.Existing satellite mobile communication terminal is in when conversion, and decay gain output is stable inadequately, and transfer process is difficult to control, and this is a satellite communication field letter problem to be solved.
Summary of the invention
The object of the invention promptly is to overcome the deficiency of prior art, and a kind of low-converter gain control method is provided, and it strengthens the controllability of transfer process, and has increased the stability of decay gain output.
The object of the invention is realized through following technical scheme:
The low-converter gain control method may further comprise the steps:
Receiving inputted signal;
Judge whether described input signal is effective;
If described input signal is effective, then handle said input signal, the low-converter incident of corresponding said input signal representative;
According to described low-converter composition of matter signaling;
Down converter is launched said signaling.
Concrete, described low-converter incident comprise the decay gain controlling, manually automatic mode switch and the radio-frequency transmissions switch at least a.
Further, before said receiving inputted signal, also comprise: the inputting interface at initialization satellite mobile communication terminal, and to the inputting interface input signal.
Further, if input signal is invalid, then be back to step to the inputting interface input signal.
Concrete, launch said signaling through the serial communication interface down converter.
From foregoing description, can find out; Advantage of the present invention and beneficial effect are; Select the down-conversion incident through input signal, the controllability of transfer process is strengthened, and multiple automatic or manual two kinds of output modes are provided; Can select according to condition of different, the stability of decay gain output is enhanced.
Description of drawings
In order to be illustrated more clearly in the application's embodiment, below will be to describing the simple explanation of the required accompanying drawing of using do among the application embodiment.Conspicuous, the accompanying drawing in describing below only is some embodiment that put down in writing among the application, to those skilled in the art, under the situation of not paying creative work, can also obtain other accompanying drawing according to following accompanying drawing.
Fig. 1 is a method flow diagram of the present invention.
Embodiment
The embodiment of the invention provides a kind of low-converter gain control method, can be effectively the high-frequency signal of satellites transmits be carried out frequency down-converts and handles, and the controllability of transfer process is strengthened, and the stability of decay gain output is enhanced.
In order to make those skilled in the art understand the present invention better, will combine the accompanying drawing in the embodiment of the invention that the technical scheme in the embodiment of the invention is carried out clear, complete description below.Conspicuous, embodiment described below only is the part in the embodiment of the invention, rather than all.Based on the embodiment of the present invention's record, other all embodiment that those skilled in the art obtain under the situation of not paying creative work are all in the scope of the present invention's protection.
Embodiment:
Present embodiment adopts the mode of going forward one by one to describe.
As shown in Figure 1, the low-converter gain control method may further comprise the steps:
Receiving inputted signal;
Judge whether above-mentioned input signal is effective;
If above-mentioned input signal is effective, then handle this input signal, to low-converter incident that should the input signal representative;
According to above-mentioned low-converter composition of matter signaling;
Down converter is launched above-mentioned signaling.
Need to prove, above-mentioned low-converter incident comprise the decay gain controlling, manually automatic mode switch and the radio-frequency transmissions switch at least a.
Before receiving inputted signal, also comprise the inputting interface step at initialization satellite mobile communication terminal and to the step of inputting interface input signal.This inputting interface comprises a slider bar, an input frame and two check boxes.Slider bar is used for changing the decay yield value, and can bring reflection intuitively to the user.Input frame is used to import accurate decay yield value.A check box is used to switch manual automatic mode, and another check box is used to control the switch of radio-frequency transmissions.The initialization inputting interface promptly is that the value in the inputting interface is back to default value, and the user passes through the input signal that the inputting interface input needs again then.This inputting interface is the portable terminal human-computer interaction interface that utilizes Linux QT platform to cooperate the ARM2410 hardware environment to build; The initialization inputting interface is that situation such as response are set and focused on to the length, width, putting position, the background colour that detect control; When no abnormal, initialization inputting interface step is accomplished.
Judge whether above-mentioned input signal is effective.At first need judge the type of input signal; Judge that promptly input signal is decay gain control signal, manual automatic mode switching signal or radio-frequency transmissions switching signal; Then according to the setting range of the value of corresponding signal; Judge that input signal is whether in this setting range, if then this input signal is effective.If not, then this input signal is invalid, and is back to the step to the inputting interface input signal automatically.
To low-converter incident that should the input signal representative.Promptly be rule through inner setting, this input signal is corresponding with the low-converter incident of this input signal representative, thus start this down-conversion incident.
According to above-mentioned low-converter composition of matter signaling.The all corresponding signaling of each down-conversion incident if started a plurality of down-conversion incidents simultaneously, then is combined into a signaling with a plurality of signalings.
Launch above-mentioned signaling through the serial communication interface down converter, thereby realize control low-converter.
After signaling is sent, can stop to continue to send signaling, also can be back to step to the inputting interface input signal, continue the new input signal of input.
Above-mentioned automatic mode is represented through the down-conversion parameter of establishing in the low-converter, the signal of a fixed frequency of output, and being suitable for the user does not have the situation of special demands to output signal frequency, is suitable for the unsettled situation of frequency input signal yet.Above-mentioned manual mode is represented to send the frequency conversion parameter of setting through down converter; Make the signal of user's setpoint frequency of low-converter output; This pattern is suitable for the user has the situation of special demands to output signal frequency, and the user can customize output signal frequency under this pattern.The decay gain controlling promptly is to be used for adjustment output signal frequency under manual mode.
Wherein, said method is mainly used in and realizes user's obtaining current geographic position information.
The above only is an embodiment of the present invention; Should be pointed out that for a person skilled in the art, under the situation that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as falling into protection scope of the present invention.
Claims (5)
1. the low-converter gain control method is characterized in that, may further comprise the steps:
Receiving inputted signal;
Judge whether described input signal is effective;
If described input signal is effective, then handle said input signal, the low-converter incident of corresponding said input signal representative;
According to described low-converter composition of matter signaling;
Down converter is launched said signaling.
2. low-converter gain control method according to claim 1 is characterized in that: described low-converter incident comprise the decay gain controlling, manually automatic mode switch and the radio-frequency transmissions switch at least a.
3. low-converter gain control method according to claim 1 is characterized in that, before said receiving inputted signal, also comprises: the inputting interface at initialization satellite mobile communication terminal, and to the inputting interface input signal.
4. low-converter gain control method according to claim 3 is characterized in that: if input signal is invalid, then be back to the step to the inputting interface input signal.
5. low-converter gain control method according to claim 1 is characterized in that: launch said signaling through the serial communication interface down converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103456746A CN102843113A (en) | 2012-09-18 | 2012-09-18 | Down converter gain control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103456746A CN102843113A (en) | 2012-09-18 | 2012-09-18 | Down converter gain control method |
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| CN102843113A true CN102843113A (en) | 2012-12-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104168001A (en) * | 2014-05-27 | 2014-11-26 | 北京遥测技术研究所 | Eight-channel gain-controllable down converter |
| CN105933258A (en) * | 2016-06-22 | 2016-09-07 | 安徽天兵电子科技有限公司 | Calibration local oscillation module for modular microwave module |
Citations (3)
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| WO2008056932A1 (en) * | 2006-11-10 | 2008-05-15 | Jin Woo Park | Apparatus and method for downconverting rf multi-signals simultaneously by bandpass sampling |
| CN101335530A (en) * | 2008-07-30 | 2008-12-31 | 京信通信系统（中国）有限公司 | Carrier type digital radio frequency stretch system and bottom noise switching off method and device thereof |
| CN102566460A (en) * | 2011-12-22 | 2012-07-11 | 重庆大学 | SOE (sequence of event) acquisition card and acquisition method thereof |
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2012
- 2012-09-18 CN CN2012103456746A patent/CN102843113A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008056932A1 (en) * | 2006-11-10 | 2008-05-15 | Jin Woo Park | Apparatus and method for downconverting rf multi-signals simultaneously by bandpass sampling |
| CN101335530A (en) * | 2008-07-30 | 2008-12-31 | 京信通信系统（中国）有限公司 | Carrier type digital radio frequency stretch system and bottom noise switching off method and device thereof |
| CN102566460A (en) * | 2011-12-22 | 2012-07-11 | 重庆大学 | SOE (sequence of event) acquisition card and acquisition method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104168001A (en) * | 2014-05-27 | 2014-11-26 | 北京遥测技术研究所 | Eight-channel gain-controllable down converter |
| CN105933258A (en) * | 2016-06-22 | 2016-09-07 | 安徽天兵电子科技有限公司 | Calibration local oscillation module for modular microwave module |
| CN105933258B (en) * | 2016-06-22 | 2022-12-13 | 安徽天兵电子科技股份有限公司 | Calibration local oscillator module of modularized microwave assembly |
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Application publication date: 20121226 |