CN206627619U - A kind of multiband minimizes external radiation source radar system - Google Patents
A kind of multiband minimizes external radiation source radar system Download PDFInfo
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- CN206627619U CN206627619U CN201720335097.0U CN201720335097U CN206627619U CN 206627619 U CN206627619 U CN 206627619U CN 201720335097 U CN201720335097 U CN 201720335097U CN 206627619 U CN206627619 U CN 206627619U
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- radio frequency
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- multiband
- radiation source
- radar system
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Abstract
The utility model provides a kind of multiband miniaturization external radiation source radar system, it is characterised in that：Including the antenna receiving unit being sequentially connected, radio frequency input block, communication unit and data transmission unit, the radio frequency input block includes radio frequency single-ended transfer difference unit and radiofrequency signal processing unit, radio frequency single-ended transfer difference unit connects radiofrequency signal processing unit, the radiofrequency signal processing unit includes the low-noise amplifier being sequentially connected, zero intermediate frequency orthogonal mixer, low pass filter, ADC and digital baseband filter, the communication unit includes base band data buffer module, radio frequency single-ended transfer difference unit connects low-noise amplifier, digital baseband filter linker band data buffering module.The utility model has good Universal and scalability, and compatible multiband, cost is low and has the characteristics of miniaturization.
Description
Technical field
The utility model belongs to radio communication radar equipment field, more particularly to a kind of multiband miniaturization external sort algorithm thunder
Up to system.
Background technology
External source radar be it is a kind of itself not electromagnetic signals but utilize the non-cooperation irradiation source progress target of third party
The new system radar of detection.External illuminators-based radar does not launch the characteristics of electromagnetic wave with many advantages：Distributed without frequency, nothing
Electromagnetic pollution；Anti-stealthy, low-altitude detection ability is strong；Develop, mobility strong low with maintenance cost.External illuminators-based radar possess this
A little advantages cause it to turn into the hot fields of researcher's research in recent years.At present, available irradiation source includes frequency modulation in environment
Broadcast, digital video television broadcasting and communication broadcast signal.But the irradiation source in environment have different centre frequencies and
Signal bandwidth.Therefore, working frequency is typically limited in by external illuminators-based radar receiver system at this stage in order to simplify design
Certain scope, thus allow the compatible irradiation source with same characteristic of receiver system.To receive more multiwave photograph
Source is penetrated, the operating frequency range of system by using independent system is covered, can be improved more and improve compiling for bandwidth chahnel
Cheng Xing.In addition, external illuminators-based radar receiver system at this stage not only have complicated hardware configuration, huge volume and
The characteristics of programmability difference, a certain distance also be present with software radio thought truly.Therefore, this area is urgently
It is proposed can compatible different center frequency, unlike signal bandwidth, the multiband irradiation source of different baseband sampling rates, while meet be
System small volume, novel device simple to operate.
Utility model content
Limitation that can not be compatible for bulky and multiband irradiation source existing for current radar system, the utility model
Purpose is to design a kind of multiband miniaturization external radiation source radar system.
The technical solution of the utility model is that a kind of multiband minimizes external radiation source radar system, including be sequentially connected
Antenna receiving unit, radio frequency input block, communication unit and data transmission unit, it is single-ended that the radio frequency input block includes radio frequency
Slip subdivision and radiofrequency signal processing unit, radio frequency single-ended transfer difference unit connection radiofrequency signal processing unit, the radio frequency
Signal processing unit includes low-noise amplifier, zero intermediate frequency orthogonal mixer, low pass filter, ADC and the numeral being sequentially connected
Baseband filter, the communication unit include base band data buffer module, radio frequency single-ended transfer difference unit connection low noise amplification
Device, digital baseband filter linker band data buffering module.
Moreover, host computer is set, data transmission unit connection host computer.
Moreover, connection sets data storage cell in host computer.
Moreover, the corresponding radio frequency control module of radiofrequency signal processing unit is set, radio frequency control module connection radiofrequency signal
Processing unit.
Moreover, radio frequency control module and base band data buffer module use FGPA integration realizations.
Moreover, radiofrequency signal processing unit uses AD9361 chips.
Moreover, data transmission unit uses USB3.0 data transfer chips.
Moreover, radiofrequency signal is through antenna receiving unit input radio frequency single-ended transfer difference unit, radio frequency single-ended transfer difference unit
Conversion gained difference radio-frequency signal is successively through the low-noise amplifier inside radiofrequency signal processing unit, the orthogonal mixing of zero intermediate frequency
Device, low pass filter, ADC and digital baseband filter, double 12 I, Q orthogonal digital baseband signals of output are defeated through communication unit
Enter data transmission unit.
Therefore, compared with external illuminators-based radar receiver system device at this stage, the utility model has a variety of advantages：
System bulk is small, easy to carry, and as the important component of external radiation source radar system, the utility model has logical well
With property and scalability, compatible multiband, cost is low and has the characteristics of miniaturization；It is preferred that the AD9361 using high integration
The USB3.0 data transfer chips of radiofrequency receiving chip and small size so that receiver system has compatible multiband and miniaturization
Advantage.System operating frequency scope supports 70MHz to 3GHz, covers most of charter and unlicensed band, can be achieved
Effective storage of multiwave signal acquisition and data.The system is simple to operate when using, and supports RF center frequency, signal
The parameter configurations such as bandwidth, system gain, baseband sampling rate are flexible, distributed without frequency, no electromagnetic interference.The utility model is carried
Had a good application prospect and considerable market value for technical scheme.
Brief description of the drawings
Fig. 1 is the structure chart of the utility model embodiment.
Fig. 2 is the radio frequency input block of the utility model embodiment and the interface diagram of communication unit.
Fig. 3 is the communication unit of the utility model embodiment and the interface diagram of data transmission unit.
Fig. 4 is the utility model embodiment experiment gained in input FM signal band spectrum result schematic diagram.
Fig. 5 is the utility model embodiment experiment gained in input China Mobile Multimedia Broadcasting TV signal frequency spectrum signal
Figure.
Fig. 6 is the utility model embodiment experiment gained in input LTE 4G signal in band spectrum diagrams.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Referring to Fig. 1, the utility model, which provides a kind of multiband miniaturization external radiation source radar system, to be included being sequentially connected
Antenna receiving unit, radio frequency input block, communication unit and data transmission unit, when it is implemented, can be with external setting
Host computer, data transmission unit are connected to host computer, can also extend connection in host computer as needed and set data storage cell,
Such as solid state hard disc.Radio frequency input block includes radio frequency single-ended transfer difference unit, radiofrequency signal processing unit, is arranged as required to
Clock input block, radio frequency single-ended transfer difference unit connection radiofrequency signal processing unit, when it is implemented, radio frequency can also be set
The corresponding radio frequency control module of signal processing unit, radio frequency control module connection radiofrequency signal processing unit；Communication unit includes
Base band data buffer module, clock input block is arranged as required to, field programmable gate array can be used（FPGA）It is integrated real
Existing radio frequency control module and base band data buffer module.Data transmission unit is realized using USB3.0 technologies, is arranged as required to
Clock input block.
Preferably, radiofrequency signal processing unit uses AD9361 chips, the clock input block of radiofrequency signal processing unit
It is the crystal oscillator that frequency is 40MHz；Data transmission unit uses USB3.0 data transfer chips, including USB3.0 peripheral hardware controls
Device chip CYUSB3014, clock input block and the micro-B interfaces of USB 3.0 processed, USB3.0 peripheral control unit chips
CYUSB3014 clock input block is the crystal oscillator that frequency is 19.2MHz.Programmable gate array（FPGA）Unit when
Clock input block is the crystal oscillator that frequency is 40MHz.The connection of specific clock input block can be according to specific chip pin
Setting is realized.When it is implemented, specifically needed to provide corresponding power supply according to each active device.
Include low-noise amplifier, the zero intermediate frequency being sequentially connected in embodiment, inside AD9361 radiofrequency signal processing units
Orthogonal mixer, low pass filter, ADC, digital baseband filter, radio frequency single-ended transfer difference unit connection low-noise amplifier,
Digital baseband filter linker band data buffering module.When specifically used, those skilled in the art can according to using needs, from
Exercise and carry out AD9361 receiver parameters configurations with the respective radio-frequency control module of AD9361 radiofrequency signal processing units, such as：
System gain 30dB, orthogonal mixing local frequency 658MHz, ADC sample rate 160MHz, digital baseband extract 16 times, data output
Port is CMOS dual-port output modes.
Radiofrequency signal RF IN pass through radio frequency single-ended transfer difference through antenna receiving unit input radio frequency single-ended transfer difference unit
Cell translation is into difference radio-frequency signal, and difference radio-frequency signal is by the low noise amplification inside AD9361 radiofrequency signal processing units
Double 12 I, Q orthogonal digital base band are exported after device, zero intermediate frequency orthogonal mixer, low pass filter, ADC, digital baseband filter
Signal, then through communication unit input data transmission unit；Data transmission unit is exported by the micro-B interfaces of USB 3.0
Digital baseband data is to host computer.
In embodiment, base band data buffer module is connected with radio frequency input block and data transmission module respectively.Referring to figure
2, the double 12 bit data end mouths and the Double Data interface of base band data buffer module in communication unit of AD9361 chips in embodiment
Line：P0_D[11：0] with P1_D [11:0] it is dual-port parallel data bus line, DATA_CLK is and data sync clock RX
FRAME is frames received evidence.Referring to Fig. 3, base band data buffer module（FPGA unit is realized）Between data transmission unit
Data-interface line：D31：D0 is 32 bit data bus, and PCLK is and data/address bus synchronised clock.It is double from AD9361 chips
12 I, Q orthogonal digital baseband signals are transferred to by the data-interface between base band data buffer module and data transmission unit
Data transmission unit.
When it is implemented, the USB3.0 peripheral control unit chips CYUSB3014 of data transmission unit can be configured to without CPU
The DMA put-through channels of intervention.The digital baseband data that data transmission unit obtains passes through DMA buffering transmissions to USB 3.0
Micro-B interfaces.
In embodiment, host computer can pre-set USB3.0 driving, and USB 3.0 is come from using USB3.0 driving collection
The digital baseband data of micro-B interfaces, and digital baseband data is stored to solid state hard disc in a binary format.
When it is implemented, those skilled in the art voluntarily can be set in host computer according to prior art utilizes the data stored
Carry out signal transacting.The utility model only provides hardware modifications and protection, is not related to the improvement of software aspects.
The effect of the utility model embodiment can be further illustrated by field trial：
Fig. 4 is the fm band frequency spectrum that receives of the utility model, and its signal center frequency is 102.6MHz, signal bandwidth
For 400KHz, sample rate 816KHz.
The China Mobile Multimedia Broadcasting TV band spectrum that Fig. 5 receives for the utility model, its signal center frequency
For 738MHz, signal bandwidth 7.56MHz, sample rate 10MHz.
Fig. 6 is the signal spectrum for the telecommunications FDD-LTE wave bands that the utility model receives, and its signal center frequency is
1867.5MHz, signal bandwidth 15MHz, sample rate 23.04MHz.
Experiment further calculates single base range Doppler spectrum, in host computer using MATLAB softwares to the ginseng that receives
Examine the target range doppler information for carrying out related calculation with monitoring signals and being obtained with FFT computings.Wherein reception signal is more for numeral
Media broadcast signal, frequency 738MHz, bandwidth 7.56MHz, sample rate 10MHz.
It can be seen that provide device, compatible different center frequency, unlike signal bandwidth, different bases using the utility model
Multiband irradiation source with sample rate, while meet the novel device requirement that system bulk is small, simple to operate.
Claims (8)
1. a kind of multiband minimizes external radiation source radar system, it is characterised in that：Including be sequentially connected antenna receiving unit,
Radio frequency input block, communication unit and data transmission unit, the radio frequency input block include radio frequency single-ended transfer difference unit and
Radiofrequency signal processing unit, radio frequency single-ended transfer difference unit connection radiofrequency signal processing unit, the radiofrequency signal processing unit
Including low-noise amplifier, zero intermediate frequency orthogonal mixer, low pass filter, ADC and the digital baseband filter being sequentially connected, institute
Stating communication unit includes base band data buffer module, radio frequency single-ended transfer difference unit connection low-noise amplifier, digital baseband filter
Ripple device linker band data buffering module.
2. multiband miniaturization external radiation source radar system according to claim 1, it is characterised in that：Host computer, number are set
Host computer is connected according to transmission unit.
3. multiband miniaturization external radiation source radar system according to claim 2, it is characterised in that：Connection is set in host computer
Put data storage cell.
4. multiband miniaturization external radiation source radar system according to claim 1, it is characterised in that：Set at radiofrequency signal
Manage the corresponding radio frequency control module of unit, radio frequency control module connection radiofrequency signal processing unit.
5. multiband miniaturization external radiation source radar system according to claim 4, it is characterised in that：Radio frequency control module and
Base band data buffer module uses FGPA integration realizations.
6. external radiation source radar system is minimized according to 1 or 2 or 3 or 4 or 5 multiband of claim, it is characterised in that：Penetrate
Audio signalprocessing unit uses AD9361 chips.
7. external radiation source radar system is minimized according to 1 or 2 or 3 or 4 or 5 multiband of claim, it is characterised in that：Number
USB3.0 data transfer chips are used according to transmission unit.
8. external radiation source radar system is minimized according to 1 or 2 or 3 or 4 or 5 multiband of claim, it is characterised in that：Penetrate
Frequency signal is through antenna receiving unit input radio frequency single-ended transfer difference unit, differential radio frequency obtained by radio frequency single-ended transfer difference cell translation
Signal is successively through the low-noise amplifier inside radiofrequency signal processing unit, zero intermediate frequency orthogonal mixer, low pass filter, ADC
And digital baseband filter, double 12 I, Q orthogonal digital baseband signals of output are through communication unit input data transmission unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720335097.0U CN206627619U (en) | 2017-03-31 | 2017-03-31 | A kind of multiband minimizes external radiation source radar system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720335097.0U CN206627619U (en) | 2017-03-31 | 2017-03-31 | A kind of multiband minimizes external radiation source radar system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021042652A1 (en) * | 2019-09-06 | 2021-03-11 | 深圳迈睿智能科技有限公司 | Microwave detector and detection method that tend to immediately respond |
-
2017
- 2017-03-31 CN CN201720335097.0U patent/CN206627619U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021042652A1 (en) * | 2019-09-06 | 2021-03-11 | 深圳迈睿智能科技有限公司 | Microwave detector and detection method that tend to immediately respond |
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Granted publication date: 20171110 Termination date: 20190331 |