CN102062863A - Satellite navigation RF (Radio-Frequency) module - Google Patents
Satellite navigation RF (Radio-Frequency) module Download PDFInfo
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- CN102062863A CN102062863A CN 201010546982 CN201010546982A CN102062863A CN 102062863 A CN102062863 A CN 102062863A CN 201010546982 CN201010546982 CN 201010546982 CN 201010546982 A CN201010546982 A CN 201010546982A CN 102062863 A CN102062863 A CN 102062863A
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Abstract
The invention relates to a satellite navigation RF (Radio-Frequency) module. The module comprises at least one path of RF signal input module, an RF signal output signal and an input output selection control unit for selecting an RF input module and a signal output module. The satellite navigation RF module can be used for researching various satellite navigation system receivers or satellite navigation system receivers compatible with multiple modes, such as receivers compatible with a GPS (Global Position System) and a Beidou 2rid generation satellite, can also be used for connecting a data acquisition system for acquiring satellite data The invention has the advantages of various user occasions, strong generalization, direct display state, and the like, saves cost and time for a research process, and also provides a general signal input output selection module for the multi-mode satellite navigation receives.
Description
Technical field
The present invention relates to a kind of satellite navigation radio-frequency module and use the satellite navigation of this module.
Background technology
Generally speaking, the satellite navigation receiver system is by antenna, radio frequency, and baseband processing chip, host computer, user interface etc. are partly formed.And existing researching and developing satellite navigation receiver system, because baseband processing chip generally has only one group of intermediate-freuqncy signal input port, thereby development system also adopts one road radio-frequency module accordingly, and the output of one tunnel intermediate-freuqncy signal is provided.And the pattern one to one of this curing has not only made full use of the effect of module itself, also brings inconvenience for research and development simultaneously.In the receiver of satellite navigation system R﹠D process, function and performance for debug system, often needing might need open unscreened strong signal for system inserts different radiofrequency signals, also might need to cover the signal of serious weak signal or specific output special scenes.And the fixed mode that a this baseband processing chip can only connect certain radio-frequency module has restricted the dirigibility of research and development greatly, has increased unnecessary research and development time and cost in vain.On the other hand, lasting propelling along with China's Big Dipper 2 generation satellite navigation system, the Galileo system in Muscovite glonass system and Europe is also perfect in construction, add original GPS System in USA, the receiver of multi-satellite navigation system compatible will be more and more general, and this class multi-satellite navigation system receiver is just pressing for and a kind ofly can provide the multichannel multisystem optional radio-frequency module flexibly, does not occur but the radio-frequency module of this requirement appears satisfying in present stage.
Fig. 1 is present general satellite navigation receiver and development system thereof, wherein antenna 101 is connected with radio-frequency module 102, the digital medium-frequency signal of radio-frequency module output is connected to baseband processing chip 103, baseband processing chip 103, again the locating information after handling is input to host computer 104 and uses, user interface 105 also is connected to host computer simultaneously.As can be seen, baseband processing chip can only insert the radio frequency intermediate-freuqncy signal on a certain road regularly, and is very mechanical.
Summary of the invention
The purpose of this invention is to provide a kind of like this expansion module, it supports the input of multi-channel rf signal, can freely switch arbitrary road or multi-channel rf intermediate-freuqncy signal as output, in order to solve the fixed relationship that radio-frequency module and baseband chip can only be connected one to one in the existing satellite navigation system.
The present invention is achieved in that
A kind of satellite navigation radio-frequency module, described module comprise, are no less than one tunnel radiofrequency signal load module, the radiofrequency signal output module, and control module is selected in input and output, is used to select radio frequency load module and signal output module.
Further, described module also comprises, the input and output indicating member, and described input and output select control module to control described input and output indicating member, are used to show current input and output selection information.
Further, described radiofrequency signal output module comprises two-way output at least.
Further, described radiofrequency signal output module output intermediate-freuqncy signal.
Further, described radiofrequency signal load module is from antenna input radio frequency signal, through pre-filtering and amplification, carry out down coversion by local clock concussion 303 through after the frequency synthesis then, through the A/D conversion analog if signal is quantized into digital medium-frequency signal output at last.
Further, described radiofrequency signal load module receives the input select signal that control module is selected in input and output, and not selected radiofrequency signal load module is made as low power consumpting state.
Further, the input signal of described radiofrequency signal load module is from two generations of the Big Dipper and GPS position location satellite system.
Further, described input and output select the input and output of control module to select signal to be sent by host computer.
Further, the input and output selection signal of described input and output selection control module is to be controlled by the toggle switch that is installed on the described radio-frequency module.
In addition, the present invention also provides the satellite navigation of a kind of bimodulus or multimode, and described equipment comprises radio-frequency module recited above.
After adopting technical scheme of the present invention, the present invention can be used in the research and development of each receiver of satellite navigation system, also can be used on the receiver of satellite navigation system of multi-mode compatibility, also can be used for connecting data acquisition system (DAS) and gathers satellite data.It is various to have use occasion, highly versatile, characteristics such as show state directly perceived.Not only save cost and time, also select module for the multi-mode satellite navigation receiver provides general signal input and output for R﹠D process.
Description of drawings
Fig. 1 is general satellite navigation receiver and development system Organization Chart thereof;
Fig. 2 is the system that one three radio frequency is imported the output of three digital intermediate frequencies;
Fig. 3 is the theory diagram of radiofrequency signal load module;
Fig. 4 is the control principle block diagram of master controller;
Fig. 5 is the annexation figure of radiofrequency signal load module and master controller;
Fig. 6 is the annexation figure of master controller and output interface.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention is a kind of like this system, and it comprises multichannel antenna access port, multi-channel rf signal input module, a master controller, a user control interface, and multiple signals output interface.Wherein each road antenna access port is connected to one tunnel radiofrequency signal load module, the radiofrequency signal load module is handled radiofrequency signal, intermediate frequency clock, data and the radio-frequency module enable signal of output all are connected to master controller, all signal output interfaces also are connected to master controller simultaneously, thereby master controller is responsible for receiving the input/output relation at the control signal configuration master controller two ends of user control interface, with reach with on the plate arbitrarily radiofrequency signal output to the effect of signal output arbitrarily on the plate.
Native system has following characteristics:
1. the increase and decrease according to demand of the radiofrequency signal load module on the plate is supported the radio-frequency module of GPS and BD two generations two cover system;
2. support the many outputs of an input, an input one output and multiple-input and multiple-output isotype;
3. when radio frequency is not as output on the plate it is set automatically and is in low-power consumption mode, reduce interfering with each other between radio frequency and lower power consumption simultaneously;
4. there is LED modules with different colors to show the radiofrequency signal of current input and output on the plate, conveniently intuitively observes.
Figure 2 shows that one three radio frequency imports the system of three digital intermediate frequencies output.Wherein radiofrequency signal load module 201 respectively connects an antenna, and the input of three road radio frequencies is provided, and every road radio frequency has an identification LEDs 202 respectively; The digital medium-frequency signal of radio-frequency module output is connected to master controller 203, and the control signal of while user control interface 206 also is connected to master controller and carries out input and output control; Master controller 203 is adjusted input/output relation according to control signal, and digital medium-frequency signal is outputed to output interface 204, and subsidiary on the output interface 204 have identification LEDs 205, and which intermediate-freuqncy signal what be used to identify output interface output is.
1, radiofrequency signal load module
Fig. 3 is the theory diagram of radiofrequency signal load module, and the radiofrequency signal load module is finished the function that analog radio-frequency signal is converted to digital medium-frequency signal.Radio-frequency module is from antenna 301 input radio frequency signals, pass through pre-filtering and amplify 302, carry out down coversion 305 by local clock concussion 303 through after the frequency synthesis 304 then, through A/D conversion 306 analog if signal is quantized into the digital medium-frequency signal (Data[0] and Data[1]) of 2 bit wides at last.
2, master controller
Master controller uses CPLD(Complex Programmable Logic Device, CPLD) or FPGA (Field-Programmable Gate Array, realize that field programmable gate array) it is mainly finished according to the signal controlling radio-frequency module intermediate-freuqncy signal of user control interface input and the annexation of output interface.Fig. 4 is the control principle block diagram of master controller, is connected to MUX 402 from the intermediate-freuqncy signal 401 of radio-frequency module, is here three to select a MUX, and 403 controls output to the signal of interface 404 to MUX 402 according to control signal.
3, radiofrequency signal load module and master controller annexation
Fig. 5 is the annexation figure of radiofrequency signal load module and master controller.Radiofrequency signal load module (RF) is input to master controller radio frequency clock signal (CLK) and through the digital medium-frequency signal that quantizes (Data[0], Data[1]), receives the low-power consumption enable signal (Low_en) and the LED id signal (LED) of master controller simultaneously.
4, master controller and output interface annexation
Fig. 6 is the annexation figure of master controller and output interface, master controller will from the clock signal (CLK) of radiofrequency signal load module and digital medium-frequency signal (Data[0], Data[1]) output to external interface, export the LED identification information (Led_R of this RF signal simultaneously, Led_G, Led_B), with the data that show the output of this output interface are radio frequencies from which, for example: the data of output interface output RF1, and the identification LEDs of RF1 is red LED (R), then master controller military order LED id signal Led_R is output as height, with the red LED (R) of lighting output interface, be the signal of RF1 with the signal that indicates output at this very moment.
5, user's control
Shown in Fig. 2 user control interface 206, user control interface is 3 toggle switch S[2:0 on the plate], wherein S0 controls RF1, and S1 controls RF2, and S2 controls RF3.RF1 outputs to external interface when S0 is 1, and RF1 is in low power consumpting state when S0 is 0; RF2 outputs to external interface when S1 is 1, and RF2 is in low power consumpting state when S1 is 0; RF3 outputs to external interface when S2 is 1, and RF3 is in low power consumpting state when S2 is 0.
Its relation is as tabulating shown in 1:
Table 1
When this invention was applied in the specific product, user control signal can also be the control signal that host computer CPU sends, and is controlled by menu or button in host computer operating system by the user, and was more efficient and convenient.
Radio-frequency module of the present invention can be as the part of satellite navigation or system; especially in satellite navigation with bimodulus or multimode or system; in the satellite navigation or system as compatible with GPS and the Big Dipper two generations satellite-signal, it can select control module as input and output.In addition, the present invention also can be used as independent product and comes to use for development system.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a satellite navigation radio-frequency module is characterized in that, described module comprises, be no less than one tunnel radiofrequency signal load module (201), radiofrequency signal output module (204), and, control module (203) is selected in input and output, is used to select radio frequency load module and signal output module.
2. radio-frequency module as claimed in claim 1 is characterized in that described module also comprises, input and output indicating member (202,205), described input and output select control module to control described input and output indicating member, are used to show current input and output selection information.
3. radio-frequency module as claimed in claim 2 is characterized in that, described radiofrequency signal output module comprises two-way output at least.
4. as any described radio-frequency module in the claim 1 to 3, it is characterized in that described radiofrequency signal output module output intermediate-freuqncy signal.
5. radio-frequency module as claimed in claim 4, it is characterized in that, described radiofrequency signal load module is from antenna (301) input radio frequency signal, through pre-filtering and amplification (302), by carrying out down coversion (305) after local clock concussion (303) the process frequency synthesis (304), through A/D conversion (306) analog if signal is quantized into digital medium-frequency signal output at last then.
6. radio-frequency module as claimed in claim 5 is characterized in that, described radiofrequency signal load module receives the input select signal that control module is selected in input and output, and not selected radiofrequency signal load module is made as low power consumpting state.
7. radio-frequency module as claimed in claim 6 is characterized in that, the input signal of described radiofrequency signal load module is from two generations of the Big Dipper and GPS position location satellite system.
8. radio-frequency module as claimed in claim 7 is characterized in that, described input and output select the input and output of control module to select signal to be sent by host computer.
9. radio-frequency module as claimed in claim 8 is characterized in that, it is to be controlled by the toggle switch (206) that is installed on the described radio-frequency module that described input and output select the input and output of control module to select signal.
10. the satellite navigation of bimodulus or multimode is characterized in that described equipment comprises radio-frequency module as claimed in claim 1.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102508262A (en) * | 2011-10-27 | 2012-06-20 | 上海迦美信芯通讯技术有限公司 | Double-channel radiofrequency receiver capable of realizing multiplex analog-to-digital conversion output and data processing method of double-channel radiofrequency receiver |
CN103308932A (en) * | 2013-05-28 | 2013-09-18 | 中国电子科技集团公司第三十八研究所 | Monolithic multimode navigation chip based on broadband radio frequency direct technology |
CN105372683A (en) * | 2015-03-31 | 2016-03-02 | 中国科学院上海技术物理研究所 | Real-time signal receiving and processing system of public frequency points of Beidou navigation satellite system and GPS |
CN105929420A (en) * | 2016-04-26 | 2016-09-07 | 重庆卓观科技有限公司 | Satellite navigation signal selection method and device |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102508262A (en) * | 2011-10-27 | 2012-06-20 | 上海迦美信芯通讯技术有限公司 | Double-channel radiofrequency receiver capable of realizing multiplex analog-to-digital conversion output and data processing method of double-channel radiofrequency receiver |
CN102508262B (en) * | 2011-10-27 | 2013-07-31 | 上海迦美信芯通讯技术有限公司 | Double-channel radiofrequency receiver capable of realizing multiplex analog-to-digital conversion output and data processing method of double-channel radiofrequency receiver |
CN103308932A (en) * | 2013-05-28 | 2013-09-18 | 中国电子科技集团公司第三十八研究所 | Monolithic multimode navigation chip based on broadband radio frequency direct technology |
CN105372683A (en) * | 2015-03-31 | 2016-03-02 | 中国科学院上海技术物理研究所 | Real-time signal receiving and processing system of public frequency points of Beidou navigation satellite system and GPS |
CN105929420A (en) * | 2016-04-26 | 2016-09-07 | 重庆卓观科技有限公司 | Satellite navigation signal selection method and device |
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Application publication date: 20110518 |