CN207780243U - A kind of multi-frequency-point satellite navigation receiver - Google Patents
A kind of multi-frequency-point satellite navigation receiver Download PDFInfo
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- CN207780243U CN207780243U CN201820142009.XU CN201820142009U CN207780243U CN 207780243 U CN207780243 U CN 207780243U CN 201820142009 U CN201820142009 U CN 201820142009U CN 207780243 U CN207780243 U CN 207780243U
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Abstract
The utility model is suitable for satellite navigation receiver field, provides a kind of multi-frequency-point satellite navigation receiver.Multi-frequency-point satellite navigation receiver includes power module, radio-frequency front-end processing module, baseband signal processing module, communication interface modules, first antenna and the second antenna；Power module gives radio-frequency front-end processing module, baseband signal processing module, first antenna and the power supply of the second antenna respectively, first antenna and the second antenna are connect with radio-frequency front-end processing module respectively, radio-frequency front-end processing module is connect with baseband signal processing module, and baseband signal processing module is connect with communication interface modules.Double antenna designs the function that can complete direction finding, can meet the demand in the course for measuring carrier movement in real time.
Description
Technical field
The utility model belongs to satellite navigation receiver field more particularly to a kind of multi-frequency-point satellite navigation receiver.
Background technology
The GPS (Global Positioning System, global positioning system) in the U.S. in theory realizes the whole world
Covering, and high-precision civilian location navigation service is also provided, the visible satellite number of GPS is 6-8 under normal circumstances
.And in practical application, due to geographical environment particularity or satellite-signal in communication process due to blocking,
Scattering etc. is by serious decaying, the case where number that visible satellite occur in some places is less than 4, causes signal occur blind
Area, so that it cannot realize positioning.With increasingly mature and perfect, the current GNSS of satellite navigation receiver technology
(Global Navigation Satellite System, Global Satellite Navigation System) further includes other than GPS：Russia
GLONASS (GLONASS satellite navigation system), China BD (Beidou satellite navigation system) and European Galileo (gals
Profit slightly global position system).There are more visible satellite quantity using multifrequency point alignment by union, more preferably GDOP
(Geometric Dilution Precision, geometric dilution of precision), can work, and energy under conditions of environment is poor
It is enough that accurate, reliable positioning result is provided.However, current multifrequency point alignment by union is realized using an antenna, because
This cannot achieve the function of direction finding, cannot meet the demand in the course for measuring carrier movement in real time.
Utility model content
The purpose of this utility model is to provide a kind of multi-frequency-point satellite navigation receivers, it is intended to solve current multifrequency point
Alignment by union is all to be realized using an antenna, therefore cannot achieve the function of direction finding, cannot meet and measure carrier fortune in real time
The problem of demand in dynamic course.
The utility model provides a kind of multi-frequency-point satellite navigation receiver, including power module, radio-frequency front-end handle mould
Block, baseband signal processing module, communication interface modules, first antenna and the second antenna；Power module respectively to radio-frequency front-end at
Manage module, baseband signal processing module, first antenna and the power supply of the second antenna, first antenna and the second antenna respectively with before radio frequency
Hold processing module connection, radio-frequency front-end processing module connect with baseband signal processing module, baseband signal processing module with communicate
Interface module connects.
Further, the radio-frequency front-end processing module includes the lower frequency changer circuit of the GNSS signal received to first antenna
With the lower frequency changer circuit of the GNSS signal received to the second antenna, wherein
Lower frequency changer circuit to the GNSS signal of first antenna reception includes the GNSS that input terminal receives that first antenna receives
The low noise amplification module of signal, the first power splitter being connect with the output end of low noise amplification module, the respectively output with the first power splitter
Hold connection the first SAW filter, the second SAW filter and third SAW filter, respectively with the first SAW filter and
The down conversion module of the output end connection of second SAW filter, inside the output end and down conversion module of third SAW filter
Low noise amplification module input terminal connection, output end and the up-conversion frequency mixing module of the low noise amplification module inside down conversion module connect
It connects, the output of up-conversion frequency mixing module terminates the second power splitter, and the output of the second power splitter terminates down conversion module；
Lower frequency changer circuit to the GNSS signal of the second antenna reception includes the GNSS that input terminal receives that the second antenna receives
The low noise amplification module of signal, the first power splitter being connect with the output end of low noise amplification module, the respectively output with the first power splitter
Hold connection the first SAW filter, the second SAW filter and third SAW filter, respectively with the first SAW filter and
The down conversion module of the output end connection of second SAW filter, inside the output end and down conversion module of third SAW filter
Low noise amplification module input terminal connection, output end and the up-conversion frequency mixing module of the low noise amplification module inside down conversion module connect
It connects, the output of up-conversion frequency mixing module terminates the second power splitter, and the output of the second power splitter terminates down conversion module.
Further, and the corresponding down conversion module of first antenna and down conversion module corresponding with the second antenna includes
Four down coversion chips, each frequency point correspond to a down coversion chip.
Further, down coversion chip is programmable down coversion chip.
Further, the power module includes power supply VCC and the base band signal process being connect respectively with power supply VCC power supply
Module, radio-frequency front-end processing power supply module and antenna power supply module, power supply VCC is by antenna power supply module to first antenna and the
Two antennas are powered, and power supply VCC handles power supply module by radio-frequency front-end and powers to radio-frequency front-end processing module, and power supply VCC passes through
Base band signal process power supply module is powered to baseband signal processing module.
Further, the antenna power supply module is made of switching capacity voltage stabilizing chip and peripheral circuit, at radio-frequency front-end
Reason power supply module is made of voltage stabilizing chip and peripheral circuit, and base band signal process power supply module is by power management chip and periphery electricity
Road is constituted.
Further, the base band signal process power supply module further includes that core voltage automatically switches protection module, core voltage
It includes automatically cutting off the buck converter and its peripheral circuit of short-circuit function protection, base band signal process to automatically switch protection module
The Enable Pin of the output termination buck converter of the power management chip of power supply module.
In the present invention, since multi-frequency-point satellite navigation receiver includes being connect respectively with radio-frequency front-end processing module
First antenna and the second antenna, therefore double antenna design can complete the function of direction finding, can meet and measure carrier movement in real time
The demand in course.Again since down coversion chip is programmable down coversion chip, integrated level is high, low in energy consumption, small, answers
It is wide with range.Again since base band signal process power supply module includes that core voltage automatically switches protection module, core voltage automatically switches
Protection module includes automatically cutting off the buck converter and its peripheral circuit of short-circuit function protection, so if power management chip
If the VCC3.0 short circuits of output, the core voltage of ARM chips and fpga chip can be cut off by buck converter, ARM cores
Piece and fpga chip do not work, to ensure that ARM chips and FPGA will not be burned.
Description of the drawings
Fig. 1 is the structure diagram for the multi-frequency-point satellite navigation receiver that the utility model embodiment provides.
Fig. 2 is the structure diagram of radio-frequency front-end processing module.
Fig. 3 is that the core voltage of base band signal process power supply module automatically switches the functional block diagram of protection module.
Specific implementation mode
In order to make the purpose of this utility model, technical solution and advantageous effect be more clearly understood, below in conjunction with attached drawing and
Embodiment, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to
It explains the utility model, is not used to limit the utility model.
In order to illustrate technical solution described in the utility model, illustrated below by specific embodiment.
Referring to Fig. 1, the multi-frequency-point satellite navigation receiver that the utility model embodiment provides includes power module 11, penetrates
Frequency front end processing block 12, baseband signal processing module 13, communication interface modules 14, first antenna 15 and the second antenna 16.Electricity
Source module 11 gives radio-frequency front-end processing module 12, baseband signal processing module 13, first antenna 15 and the second antenna 16 to supply respectively
Electricity, first antenna 15 and the second antenna 16 are connect with radio-frequency front-end processing module 12 respectively, radio-frequency front-end processing module 12 and base
Band signal processing module 13 connects, and baseband signal processing module 13 is connect with communication interface modules 14.
Referring to Fig. 2, in the utility model embodiment, radio-frequency front-end processing module includes being received to first antenna
The lower frequency changer circuit of the lower frequency changer circuit of GNSS signal and the GNSS signal that the second antenna is received, wherein
Lower frequency changer circuit to the GNSS signal of first antenna reception includes the GNSS that input terminal receives that first antenna receives
The low noise amplification module 121 of signal, the first power splitter 122 being connect with the output end of low noise amplification module 121, respectively with the first work(point
The first SAW filter 123, the second SAW filter 124 and the third SAW filter 128 of the output end connection of device 122 divide
The down conversion module 125 not connect with the output end of the first SAW filter 123 and the second SAW filter 124, third sound table
The output end of filter 128 is connect with the input terminal of the low noise amplification module inside down conversion module 125, in down conversion module 125
The output end of the low noise amplification module in portion is connect with up-conversion frequency mixing module 126, the output termination second of up-conversion frequency mixing module 126
The output of power splitter 127, the second power splitter 127 terminates down conversion module 125；
Lower frequency changer circuit to the GNSS signal of the second antenna reception includes the GNSS that input terminal receives that the second antenna receives
The low noise amplification module 221 of signal, the first power splitter 222 being connect with the output end of low noise amplification module 221, respectively with the first work(point
The first SAW filter 223, the second SAW filter 224 and the third SAW filter 228 of the output end connection of device 222 divide
The down conversion module 225 not connect with the output end of the first SAW filter 223 and the second SAW filter 224, third sound table
The output end of filter 228 is connect with the input terminal of the low noise amplification module inside down conversion module 225, in down conversion module 225
The output end of the low noise amplification module in portion is connect with up-conversion frequency mixing module 226, the output termination second of up-conversion frequency mixing module 226
The output of power splitter 227, the second power splitter 227 terminates down conversion module 225.
And the corresponding down conversion module 124 of first antenna and down conversion module corresponding with the second antenna 224 include four
A down coversion chip, each frequency point correspond to a down coversion chip, and down coversion chip can be programmable down coversion chip,
Low in energy consumption, using flexible.Aerial signal first passes around low noise amplification module and is amplified GNSS signal, then by amplified letter
Number it is divided into three tunnels (L1, B1, L2_B3) signal by power splitter module, last L1, B1 signal passes through the first SAW filter respectively
After be sent into corresponding down conversion module be mixed to intermediate frequency to baseband signal processing module processing, L2_B3 signals are then by second
Up-conversion chip is given in output after the low noise resume module entered inside down conversion module after SAW filter, by L2_B3 signals
It carries out within the scope of upconversion process to the local oscillator of down conversion module, is divided into two-way (L2, B3) signal point using the second power splitter
Not Gei corresponding down conversion module be mixed to intermediate frequency to baseband signal processing module processing.
The multi-frequency-point satellite navigation receiver that the utility model embodiment provides realizes that the operation principle of direction-measuring function is as follows：
The multi-frequency-point satellite navigation receiver that placement the utility model embodiment provides on course carrier to be measured, first day
The GNSS signal that line, the second antenna receive enters baseband signal processing module by down coversion flow shown in Fig. 2, due to multifrequency
The lower frequency changer circuit for the GNSS signal of point satellite navigation receiver received to first antenna and the second antenna is full symmetric, signal
The hardware time delay for entering baseband signal processing module by radio-frequency front-end processing module can be ignored, and be considered as parallel to each other
Path, baseband signal processing module obtain basic lineal vector by solving the double-difference equation of satellite signal carrier phase, calculate
It is converted by coordinate after basic lineal vector, the orientation result under local geographical coordinate system can be obtained.
In the utility model embodiment, power module 11 includes power supply VCC 111 and is connect respectively with power supply VCC111
Base band signal process power supply module 112, radio-frequency front-end processing power supply module 113 and antenna power supply module 114.Antenna power supply mould
Block 114 can be made of switching capacity voltage stabilizing chip and peripheral circuit, and it can be by steady that radio-frequency front-end, which handles power supply module 113,
Chip and peripheral circuit is pressed to constitute, voltage stabilizing chip is, for example, the chip of model VRD2828TX, base band signal process power supply module
112 can be made of power management chip and peripheral circuit, and power management chip is, for example, the core of model TPS650250
Piece.3.3V power supplys VCC changes into 5.0V by switching capacity voltage stabilizing chip and powers to first antenna and the second antenna, 3.3V power supplys
VCC is powered by voltage stabilizing chip to radio-frequency front-end processing module, and 3.3V power supplys VCC is turned by power management chip TPS650250
All kinds of voltages are changed into power to baseband signal processing module.
In the utility model embodiment, base band signal process power supply module can also include that core voltage automatically switches protection
Module, as shown in figure 3, it includes automatically cutting off the buck converter IC8 of short-circuit function protection that core voltage, which automatically switches protection module,
(such as model TPS62085) and its peripheral circuit, the vcc_3.0 of the power management chip of base band signal process power supply module
The Enable Pin of output termination buck converter IC8, the peripheral circuit of buck converter IC8 include being connected on buck converter IC8
Voltage output end inductance L1, and be connected on the 9th capacitance C9 and the tenth capacitance C10 in parallel of the other end of inductance L1, warp
9th capacitance C9 and the tenth capacitance C10 filters out the low frequency of the ARM chips of baseband signal processing module and the core voltage of fpga chip
And high fdrequency component, VCC_1.1v is exported to baseband signal processing module.If the VCC3.0 short circuits of power management chip output
Words, the core voltage of ARM chips and fpga chip can be cut off, make ARM chips and fpga chip not work by buck converter
Make, to ensure that ARM chips and FPGA will not be burned.In the utility model embodiment, communication interface modules can be string
Line interface and network communication interface, such as 3G module, 4G modules, 5G modules etc..
In the present invention, since multi-frequency-point satellite navigation receiver includes being connect respectively with radio-frequency front-end processing module
First antenna and the second antenna, therefore double antenna design can complete the function of direction finding, can meet and measure carrier movement in real time
The demand in course.Again since down coversion chip is programmable down coversion chip, integrated level is high, low in energy consumption, small, answers
It is wide with range.Again since base band signal process power supply module includes that core voltage automatically switches protection module, core voltage automatically switches
Protection module includes automatically cutting off the buck converter and its peripheral circuit of short-circuit function protection, so if power management chip
If the VCC3.0 short circuits of output, the core voltage of ARM chips and fpga chip can be cut off by buck converter, ARM cores
Piece and fpga chip do not work, to ensure that ARM chips and FPGA will not be burned.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. a kind of multi-frequency-point satellite navigation receiver, which is characterized in that including power module, radio-frequency front-end processing module, base band
Signal processing module, communication interface modules, first antenna and the second antenna；Power module respectively give radio-frequency front-end processing module,
Baseband signal processing module, first antenna and the power supply of the second antenna, first antenna and the second antenna are handled with radio-frequency front-end respectively
Module connects, and radio-frequency front-end processing module is connect with baseband signal processing module, baseband signal processing module and communication interface mould
Block connects.
2. multi-frequency-point satellite navigation receiver as described in claim 1, which is characterized in that the radio-frequency front-end processing module packet
The lower frequency changer circuit of the lower frequency changer circuit and the GNSS signal received to the second antenna of the GNSS signal received to first antenna is included,
Wherein,
Lower frequency changer circuit to the GNSS signal of first antenna reception includes the GNSS signal that input terminal receives that first antenna receives
Low noise amplification module, connect with the output end of low noise amplification module the first power splitter, respectively with the output end of the first power splitter connect
The first SAW filter, the second SAW filter and the third SAW filter that connect, respectively with the first SAW filter and second
The down conversion module of the output end connection of SAW filter, the output end of third SAW filter and low inside down conversion module
It makes an uproar the input terminal connection of amplification module, the output end of the low noise amplification module inside down conversion module is connect with up-conversion frequency mixing module,
The output of up-conversion frequency mixing module terminates the second power splitter, and the output of the second power splitter terminates down conversion module；
Lower frequency changer circuit to the GNSS signal of the second antenna reception includes the GNSS signal that input terminal receives that the second antenna receives
Low noise amplification module, connect with the output end of low noise amplification module the first power splitter, respectively with the output end of the first power splitter connect
The first SAW filter, the second SAW filter and the third SAW filter that connect, respectively with the first SAW filter and second
The down conversion module of the output end connection of SAW filter, the output end of third SAW filter and low inside down conversion module
It makes an uproar the input terminal connection of amplification module, the output end of the low noise amplification module inside down conversion module is connect with up-conversion frequency mixing module,
The output of up-conversion frequency mixing module terminates the second power splitter, and the output of the second power splitter terminates down conversion module.
3. multi-frequency-point satellite navigation receiver as described in claim 1, which is characterized in that down coversion corresponding with first antenna
Module and down conversion module corresponding with the second antenna include four down coversion chips, each frequency point corresponds to a down coversion
Chip.
4. multi-frequency-point satellite navigation receiver as claimed in claim 3, which is characterized in that under down coversion chip is programmable
Frequency conversion chip.
5. multi-frequency-point satellite navigation receiver as described in claim 1, which is characterized in that the power module includes power supply
The VCC and base band signal process power supply module being connect respectively with power supply VCC, radio-frequency front-end processing power supply module and antenna power supply mould
Block, power supply VCC are powered by antenna power supply module to first antenna and the second antenna, and power supply VCC is handled by radio-frequency front-end and supplied
Electric module is powered to radio-frequency front-end processing module, and power supply VCC gives base band signal process mould by base band signal process power supply module
Block is powered.
6. multi-frequency-point satellite navigation receiver as claimed in claim 5, which is characterized in that the antenna power supply module is by switching
Capacitance voltage stabilizing chip and peripheral circuit are constituted, and radio-frequency front-end processing power supply module is made of voltage stabilizing chip and peripheral circuit, base band
Signal processing power supply module is made of power management chip and peripheral circuit.
7. multi-frequency-point satellite navigation receiver as claimed in claim 6, which is characterized in that the base band signal process power supply mould
Block further includes that core voltage automatically switches protection module, and it includes automatically cutting off short-circuit function protection that core voltage, which automatically switches protection module,
Buck converter and its peripheral circuit, the power management chip of base band signal process power supply module vcc_3.0 output termination
The Enable Pin of buck converter.
8. multi-frequency-point satellite navigation receiver as claimed in claim 7, which is characterized in that the periphery electricity of the buck converter
Road includes the inductance for the voltage output end for being connected on buck converter, and is connected on the 9th capacitance in parallel of the other end of inductance
With the tenth capacitance, the ARM chips of baseband signal processing module and the nuclear power of fpga chip are filtered out through the 9th capacitance and the tenth capacitance
The low frequency and high fdrequency component of pressure, output voltage is to baseband signal processing module.
9. multi-frequency-point satellite navigation receiver as described in claim 1, which is characterized in that the communication interface modules is serial
Interface and/or network communication interface.
10. multi-frequency-point satellite navigation receiver as claimed in claim 9, which is characterized in that the network communication interface is 3G
Module, 4G modules or 5G modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820142009.XU CN207780243U (en) | 2018-01-26 | 2018-01-26 | A kind of multi-frequency-point satellite navigation receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820142009.XU CN207780243U (en) | 2018-01-26 | 2018-01-26 | A kind of multi-frequency-point satellite navigation receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207780243U true CN207780243U (en) | 2018-08-28 |
Family
ID=63210720
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820142009.XU Expired - Fee Related CN207780243U (en) | 2018-01-26 | 2018-01-26 | A kind of multi-frequency-point satellite navigation receiver |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407116A (en) * | 2018-11-20 | 2019-03-01 | 桂林电子科技大学 | A kind of multi-frequency-point satellite navigation quality test signal generating apparatus and generation method |
| CN110460367A (en) * | 2019-07-23 | 2019-11-15 | 西安航天恒星科技实业(集团)有限公司 | The low rail telecommunication satellite signal acceptance method of swan goose |
| CN110971252A (en) * | 2019-12-06 | 2020-04-07 | 北京自动化控制设备研究所 | Satellite navigation radio frequency front-end circuit and clock circuit |
| CN111682150A (en) * | 2020-04-30 | 2020-09-18 | 航天东方红卫星有限公司 | Micro-nano satellite storage battery pack |
| CN112698365A (en) * | 2020-12-24 | 2021-04-23 | 上海海积信息科技股份有限公司 | Satellite receiver based on double antennas, satellite positioning method and system |
| CN114047532A (en) * | 2022-01-13 | 2022-02-15 | 龙旗电子(惠州)有限公司 | Double-frequency-band processing circuit and positioning equipment |
-
2018
- 2018-01-26 CN CN201820142009.XU patent/CN207780243U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407116A (en) * | 2018-11-20 | 2019-03-01 | 桂林电子科技大学 | A kind of multi-frequency-point satellite navigation quality test signal generating apparatus and generation method |
| CN109407116B (en) * | 2018-11-20 | 2024-02-27 | 桂林电子科技大学 | Multi-frequency satellite navigation quality test signal generation device and method |
| CN110460367A (en) * | 2019-07-23 | 2019-11-15 | 西安航天恒星科技实业(集团)有限公司 | The low rail telecommunication satellite signal acceptance method of swan goose |
| CN110460367B (en) * | 2019-07-23 | 2021-10-08 | 陕西航天技术应用研究院有限公司 | Method for receiving low-orbit communication satellite signal of swan goose |
| CN110971252A (en) * | 2019-12-06 | 2020-04-07 | 北京自动化控制设备研究所 | Satellite navigation radio frequency front-end circuit and clock circuit |
| CN111682150A (en) * | 2020-04-30 | 2020-09-18 | 航天东方红卫星有限公司 | Micro-nano satellite storage battery pack |
| CN111682150B (en) * | 2020-04-30 | 2022-10-21 | 航天东方红卫星有限公司 | Micro-nano satellite storage battery pack |
| CN112698365A (en) * | 2020-12-24 | 2021-04-23 | 上海海积信息科技股份有限公司 | Satellite receiver based on double antennas, satellite positioning method and system |
| CN114047532A (en) * | 2022-01-13 | 2022-02-15 | 龙旗电子(惠州)有限公司 | Double-frequency-band processing circuit and positioning equipment |
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