CN108072882A - A kind of Beidou navigation jamproof system and its signal receiving device - Google Patents
A kind of Beidou navigation jamproof system and its signal receiving device Download PDFInfo
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- CN108072882A CN108072882A CN201711216514.0A CN201711216514A CN108072882A CN 108072882 A CN108072882 A CN 108072882A CN 201711216514 A CN201711216514 A CN 201711216514A CN 108072882 A CN108072882 A CN 108072882A
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- China
- Prior art keywords
- frequency
- receiving device
- signal receiving
- beidou navigation
- input terminal
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/21—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
Abstract
The present invention proposes a kind of Beidou navigation jamproof system and its signal receiving device, including：Apparatus for frequency synthesizing, frequency mixer, intermediate frequency amplifier, wave filter and converter, digital signal processor, keyboard, liquid crystal display, electric power monitor and clock counter, the output terminal of frequency mixer is connected with the input terminal of intermediate frequency amplifier, the output terminal of intermediate frequency amplifier is connected with the input terminal of wave filter, the output terminal of wave filter is connected with the input terminal of converter, the input terminal of converter is connected with the input terminal of digital signal processor, electric power monitor and clock counter, and the microcontroller in apparatus for frequency synthesizing is further connected with keyboard and liquid crystal display.It is a feature of the present invention that the Beidou antenna signal of access is carried out frequency synthesis, there is higher frequency stability.
Description
Technical field
The present invention relates to Beidou navigation technical characteristic, more particularly to a kind of Beidou navigation jamproof system and its signal receive
Device.
Background technology
The docking collection of letters number is needed to carry out down coversion and a upconversion process in Beidou navigation jamproof system, for 1222MHz
Local oscillation signal requirement stability is high, mutually makes an uproar that low, clutter recognition is high, while stringent to the requirement of frequency synthesis unit volume；Existing frequency
Rate combiner circuit is composed using discrete components such as frequency divider, phase discriminator, low-pass filter, VCO, and stability is poor, noise
Disturb more, and volume is larger.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of signal of Beidou navigation jamproof system and receives dress
It puts, element circuit design, makes that frequency stability is high, mutually makes an uproar that low, clutter recognition is high, circuit volume is substantially reduced.
The present invention to achieve the above object, proposes a kind of signal receiving device of Beidou navigation jamproof system, including：Frequently
Rate synthesizer, frequency mixer, intermediate frequency amplifier, wave filter and converter, digital signal processor, keyboard, liquid crystal display,
Electric power monitor and clock counter, wherein, the apparatus for frequency synthesizing is connected with the input terminal of the frequency mixer, the mixing
The output terminal of device is connected with the input terminal of the intermediate frequency amplifier, and the output terminal of the intermediate frequency amplifier is defeated with the wave filter
Enter end be connected, the output terminal of the wave filter is connected with the input terminal of the converter, the input terminal of the converter and
The digital signal processor, the electric power monitor are connected with the input terminal of clock counter, in the apparatus for frequency synthesizing
Microcontroller be further connected with the keyboard and liquid crystal display further, the microcontroller use 8 AVR single chips.
Further, the apparatus for frequency synthesizing includes：Microcontroller, integrated PLL frequency synthesizer, two power splitters, the one or three
Power splitter, the two or three power splitter, amplifier, crystal oscillating circuit, the integrated PLL frequency synthesizer respectively with the crystal oscillating circuit,
Microcontroller, the connection of two power splitters, two power splitter exports all the way is connected to three amplifiers by the one or three power splitter,
The another way output of two power splitter connects the other three amplifier by the two or three power splitter.
Further, the crystal oscillating circuit uses the Voltage-Controlled Temperature Compensated Crystal Oscillator of model CFPT-126.
Further, each amplifier uses the broad band amplifier of model upc2709TB-3.
Further, each local oscillation signal that the amplifier output frequency is identical, power is equal.
Further, the frequency stability of the local oscillation signal is located at 1222MHz ± 0.01MHz.
Further, the clock counter uses the counter of model JSY-10.
The present invention also proposes a kind of Beidou navigation jamproof system, including：Beidou navigation described in above-described embodiment resists dry
Disturb the signal receiving device of system.
It is characteristic of the invention that：Using apparatus for frequency synthesizing, frequency mixer, intermediate frequency amplifier, wave filter and converter, number
Word signal processor, keyboard, liquid crystal display, electric power monitor and clock counter realize the reception to Beidou antenna signal
And frequency synthesis and signal processing, pass through apparatus for frequency synthesizing, frequency mixer, intermediate frequency amplifier, wave filter and converter and realize
The frequency synthesis of the docking collection of letters number and filtering process etc., filtering interference signals, and can signal quality be checked by liquid crystal display.
Also, using the apparatus for frequency synthesizing with high stability, the multichannel local oscillation signal of output, frequency stability control exists
1222MHz ± 0.01MHz, mutually make an uproar≤- 90dBc 10KHz, interference wave restranint≤- 60dBc, circuit volume-diminished more than 50%.
Description of the drawings
Fig. 1 is that the circuit of the signal receiving device of the Beidou navigation jamproof system of the present invention connects block diagram；
Fig. 2 is the structure chart of the apparatus for frequency synthesizing of the present invention.
Specific embodiment
As depicted in figs. 1 and 2, the signal receiving device of Beidou navigation jamproof system of the invention, including：Frequency synthesis
Device 10, frequency mixer 20, intermediate frequency amplifier 30, wave filter 40 and converter 50, digital signal processor 60, keyboard 70, liquid
Crystal display screen 80, electric power monitor 90 and clock counter 100.
Wherein, apparatus for frequency synthesizing includes：Microcontroller 2, integrated PLL frequency synthesizer 3, two power splitters 4, the one or three work(point
Device 5, the two or three power splitter 6, amplifier, crystal oscillating circuit 1, wherein, integrate PLL frequency synthesizer 3 respectively with crystal oscillating circuit 1, AVR
Microcontroller 2, two power splitters 4 connect, the output of two power splitters, 4 one tunnel by the one or three power splitter 5 connect three amplifiers (71,72,
73), the another way output of two power splitters 4 connects the other three amplifier (74,75,76) by the two or three power splitter 6.Each put
The input terminal of big device and frequency mixer connects, and the output terminal of frequency mixer is connected with the input terminal of intermediate frequency amplifier, intermediate frequency amplifier
Output terminal is connected with the input terminal of wave filter, and the output terminal of wave filter is connected with the input terminal of converter, converter it is defeated
The input terminal for entering end with digital signal processor, electric power monitor and clock counter is connected, the monolithic in apparatus for frequency synthesizing
Machine is further connected with keyboard and liquid crystal display.
In an embodiment of the present invention, crystal oscillating circuit 1：By the Voltage-Controlled Temperature Compensated Crystal Oscillator CFPT-126 of rakon companies and periphery
Circuit generates the reference frequency 10MHz of high stability；
Microcontroller 2：Using 8 AVR single chips 2 of ATTINY13A-10SSU types.
Integrated PLL frequency synthesizer 3：Using the LMX2531LQ2570E integrated chips of state half, 3V power supplies 41mA or so electricity
The low-power consumption of stream is completely integrated with frequency divider, phase discriminator, VCO etc., at the same be internally integrated low noise, high-precision low pressure
Poor voltage-stablizer LDO so that system has higher noise suppressed performance and stability.When being used cooperatively with high quality with reference to crystal oscillator
When, highly stable, low noise local oscillated signal can be generated.
One or three power splitter 5 and the two or three power splitter 6 use MINI company SCN-2-15, SCN-3-16 Surface Mount microminiature devices
Part.
Each amplifier is using NEC Corporation's upc2709TB-3 broad band amplifiers, and low in energy consumption, gain is up to 23dB, and Surface Mount surpasses
Miniature device is substantially reduced circuit volume.
In an embodiment of the present invention, clock counter uses the counter of model JSY-10.
The present invention can carry out the emulation of parameters in advance with radio frequency simulation software for circuit.Operation principle：Crystal oscillator
Circuit 1 provides 10MHz reference frequencies, and the C programmer write by PC machine injects AVR single chip 2, can control after power-up
PLL frequency synthesizer 3 changes its internal storage parameter, is divided, the processing of phase demodulation frequency discrimination, controls internal VCO outputs
1222MHz signals, it is common using two power splitters 4, the one or three power splitter 5, the two or three power splitter 6 and 6 amplifiers, final output
6 local oscillation signals that tunnel frequency is identical, power is equal, the frequency-conversion processing carried out for other units to Big Dipper satellite signal.Also,
It can be checked by the keyboard and liquid crystal display that are connected with microcontroller with observation signal quality convenient for user.
The present invention also proposes a kind of Beidou navigation jamproof system, including：Beidou navigation described in above-described embodiment resists dry
Disturb the signal receiving device of system.
The present invention is using apparatus for frequency synthesizing, frequency mixer, intermediate frequency amplifier, wave filter and converter, at digital signal
Device, keyboard, liquid crystal display, electric power monitor and clock counter are managed, realizes that the reception to Beidou antenna signal and frequency are closed
Into and signal processing, pass through apparatus for frequency synthesizing, frequency mixer, intermediate frequency amplifier, wave filter and converter realize docking collect mail
Number frequency synthesis and filtering process etc., filtering interference signals, and can signal quality be checked by liquid crystal display.Also, it adopts
With the apparatus for frequency synthesizing with high stability, the multichannel local oscillation signal of output, frequency stability control 1222MHz ±
0.01MHz, mutually make an uproar≤- 90dBc 10KHz, interference wave restranint≤- 60dBc, circuit volume-diminished more than 50%.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in combine in an appropriate manner.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art are not departing from the principle of the present invention and objective
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.The scope of the present invention
By appended claims and its equivalent limit.
Claims (9)
1. a kind of signal receiving device of Beidou navigation jamproof system, it is characterised in that：Apparatus for frequency synthesizing, frequency mixer, in
Audio amplifier, wave filter and converter, digital signal processor, keyboard, liquid crystal display, electric power monitor and clock count
Device, wherein, the apparatus for frequency synthesizing is connected with the input terminal of the frequency mixer, the output terminal of the frequency mixer and the intermediate frequency
The input terminal of amplifier is connected, and the output terminal of the intermediate frequency amplifier is connected with the input terminal of the wave filter, the wave filter
Output terminal be connected with the input terminal of the converter, the input terminal of the converter and the digital signal processor,
The electric power monitor is connected with the input terminal of clock counter, the microcontroller in the apparatus for frequency synthesizing further with it is described
Keyboard is connected with liquid crystal display.
2. the signal receiving device of Beidou navigation jamproof system as described in claim 1, which is characterized in that the frequency is closed
Include into device：Microcontroller, integrated PLL frequency synthesizer, two power splitters, the one or three power splitter, the two or three power splitter, amplification
Device, crystal oscillating circuit, the integrated PLL frequency synthesizer is connected respectively with the crystal oscillating circuit, microcontroller, two power splitters, described
Two power splitters export all the way is connected to three amplifiers, the another way output of two power splitter by the one or three power splitter
The other three amplifier is connected by the two or three power splitter.
3. the signal receiving device of Beidou navigation jamproof system as claimed in claim 2, which is characterized in that the microcontroller
Using 8 AVR single chips.
4. the signal receiving device of Beidou navigation jamproof system as claimed in claim 2, which is characterized in that the crystal oscillator electricity
Road uses the Voltage-Controlled Temperature Compensated Crystal Oscillator of model CFPT-126.
5. the signal receiving device of Beidou navigation jamproof system as claimed in claim 2, which is characterized in that put described in each
Big device uses the broad band amplifier of model upc2709TB-3.
6. the signal receiving device of Beidou navigation jamproof system as claimed in claim 2, which is characterized in that put described in each
The local oscillation signal that big device output frequency is identical, power is equal.
7. the signal receiving device of Beidou navigation jamproof system as claimed in claim 6, which is characterized in that the local oscillator letter
Number frequency stability be located at 1222MHz ± 0.01MHz.
8. the signal receiving device of Beidou navigation jamproof system as described in claim 1, which is characterized in that the clock meter
Number device uses the counter of model JSY-10.
9. a kind of Beidou navigation jamproof system, which is characterized in that including：Claim 1-8 any one of them Beidou navigations
The signal receiving device of jamproof system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711216514.0A CN108072882A (en) | 2017-11-28 | 2017-11-28 | A kind of Beidou navigation jamproof system and its signal receiving device |
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| CN201711216514.0A CN108072882A (en) | 2017-11-28 | 2017-11-28 | A kind of Beidou navigation jamproof system and its signal receiving device |
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| CN201711216514.0A Pending CN108072882A (en) | 2017-11-28 | 2017-11-28 | A kind of Beidou navigation jamproof system and its signal receiving device |
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| CN102928856A (en) * | 2012-10-19 | 2013-02-13 | 西安欣创电子技术有限公司 | Global positioning system (GPS) and Beidou double-module navigation radio frequency receiving system |
| CN203039670U (en) * | 2012-12-24 | 2013-07-03 | 天津七六四通信导航技术有限公司 | 1222MHz frequency synthesis unit |
| CN203551787U (en) * | 2013-11-07 | 2014-04-16 | 四川汇源吉迅数码科技有限公司 | Data transmission terminal used in Beidou satellite navigation system |
| CN104849729A (en) * | 2015-02-10 | 2015-08-19 | 芜湖航飞科技股份有限公司 | Beidou satellite navigation anti-interference system |
| CN204964766U (en) * | 2015-09-11 | 2016-01-13 | 安徽四创电子股份有限公司 | Big dipper RDSS radio frequency transceiving frequency conversion passageway module |
| US20160103225A1 (en) * | 2014-10-09 | 2016-04-14 | Stmicroelectronics S.R.L. | Receiver for receiving a plurality of gnss (global navigation satellite system) signals |
| EA201600368A1 (en) * | 2016-02-05 | 2017-08-31 | Черняковский, Николай Дмитриевич | MULTI-CHANNEL MULTI-SYSTEM RADIO-FREQUENCY SATELLITE NAVIGATION RECEIVER UNIT |
| CN207650404U (en) * | 2017-11-28 | 2018-07-24 | 天津七六四通信导航技术有限公司 | A kind of signal receiving device of Beidou navigation jamproof system |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928856A (en) * | 2012-10-19 | 2013-02-13 | 西安欣创电子技术有限公司 | Global positioning system (GPS) and Beidou double-module navigation radio frequency receiving system |
| CN203039670U (en) * | 2012-12-24 | 2013-07-03 | 天津七六四通信导航技术有限公司 | 1222MHz frequency synthesis unit |
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| US20160103225A1 (en) * | 2014-10-09 | 2016-04-14 | Stmicroelectronics S.R.L. | Receiver for receiving a plurality of gnss (global navigation satellite system) signals |
| CN104849729A (en) * | 2015-02-10 | 2015-08-19 | 芜湖航飞科技股份有限公司 | Beidou satellite navigation anti-interference system |
| CN204964766U (en) * | 2015-09-11 | 2016-01-13 | 安徽四创电子股份有限公司 | Big dipper RDSS radio frequency transceiving frequency conversion passageway module |
| EA201600368A1 (en) * | 2016-02-05 | 2017-08-31 | Черняковский, Николай Дмитриевич | MULTI-CHANNEL MULTI-SYSTEM RADIO-FREQUENCY SATELLITE NAVIGATION RECEIVER UNIT |
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