CN103384194A - Phase synchronization system of spatial distribution unit - Google Patents
Phase synchronization system of spatial distribution unit Download PDFInfo
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- CN103384194A CN103384194A CN201310294743XA CN201310294743A CN103384194A CN 103384194 A CN103384194 A CN 103384194A CN 201310294743X A CN201310294743X A CN 201310294743XA CN 201310294743 A CN201310294743 A CN 201310294743A CN 103384194 A CN103384194 A CN 103384194A
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Abstract
The invention discloses a phase synchronization system of a spatial distribution unit. The phase synchronization system of the spatial distribution unit comprises a main transceiver and an auxiliary transceiver; the main transceiver comprises a frequency synthesizer, an up-converter, a combiner, a phase comparator, an analog-digital converter, a micro control unit and a wireless transmitting module; the auxiliary transceiver comprises a divider, an up-converter, a phase shifter, a digital-analog converter, a micro control unit and a wireless receiving module. The main transceiver transmits a signal to the auxiliary transceiver and receives a feedback signal from the auxiliary transceiver; a phase difference of the transmitting signal and the feedback signal is obtained through comparison and the number of the phase difference is transmitted to the auxiliary transceiver after being modulated; the auxiliary transceiver receives the transmitting signal of the main transceiver, the transmitting signal is fed back and transmitted to the main transceiver, and then phase shift is performed on a received signal according to received phase difference information. The phase synchronization system of the spatial distribution unit achieves that the frequency and the phase of signals which are output from the main transceiver and the auxiliary transceiver are same and do not change along with the change of a relative distance of the main transceiver and the auxiliary transceiver and can be used in fields of beam forming, precise distance measurement, satellite synchronous communication and the like.
Description
Technical field
The present invention relates to radio transmission system, especially relate to the phase-locked system of a kind of spatial distribution unit.
Background technology
For microwave system, the relation of each member's work clock in the synchronous situation decision systems between system is so the Phase synchronization between system is determining cooperative work performance between system.In the last few years, development along with technology such as satellites formation, two war (or multistation) synthetic aperture radar, the applied field of microwave system constantly enlarges, the structure of system becomes increasingly complex, collaborative work between large scale system is more and more, and this makes importance synchronous between microwave system more outstanding.
Current synchro system is having deep research to performance impact and the system of whole communication system aspect Digital and analog.Aspect digital communication system, the synchronous extraction structure of the systems such as DSB, VSB, QAM, QPSK, OFDM is very ripe.For the Phase synchronization in analogue system, PHASE-LOCKED LOOP PLL TECHNIQUE can realize Phase synchronization well, and this method is more common in phased array radar is used.Wherein a kind of phase control of typical phased array radar is exactly by reference signal of reference source emission, receives this reference signal by each radar emission unit, and produces transmitted waveform through phase-locked loop or frequency synthesis technique.
Summary of the invention
The object of the present invention is to provide the phase-locked system of a kind of spatial distribution unit, the signal phase of the spatial distribution unit output in this system is synchronous, and Phase synchronization does not change with the variation of unit relative position.
The technical solution used in the present invention is:
The present invention includes main transceiver and from transceiver; Wherein:
In main transceiver, the output of two-way frequency synthesizer all is divided into two-way, one tunnel access mixer input, the input of another road access upconverter, mixer with the signal of these two frequencies through antenna transmission to from transceiver, and be connected to the input of splitter, the upconverter output is divided into two-way, one the tunnel connects the input of phase comparator, and another road is as the output of main transceiver; The output of phase comparator is emitted to radio receiving transmitting module from transceiver through analog to digital converter ADC, single-chip microprocessor MCU output data through radio receiving transmitting module;
From transceiver, two outputs of splitter are connected to two inputs of another upconverter, the output of another upconverter is divided into two-way, one the tunnel launches back main transceiver as feedback signal, and being connected to another input of phase comparator, another road is connected to the input of phase shifter; The output data of another radio receiving transmitting module connect the voltage-controlled end of phase shifter through another single-chip microprocessor MCU, digital to analog converter DAC; The output of phase shifter is as the output from transceiver.
Described phase shifter is analog phase shifter, and phase shift range is-180 °～+ 180 °.
Described two radio receiving transmitting modules are selected integrated multi-channel embedded radio transceiver module.
The beneficial effect that the present invention has is:
In the present invention, intercell communication transmitting-receiving different frequency, realized channel isolation, reduced to transmit and feedback signal between interference, improve the stability of a system and accuracy.Phase difference by continuous detection master-slave unit signal, utilize the mode of digital feedback, regulate in real time the phase place from element output signal, to compensate because of the intrinsic phase interference of phase difference and system that distance produces, make principal and subordinate's output signal with homophase frequently, and do not change with the variation of distance.Volume of the present invention is little, and is lightweight, has the advantages that to be easy to carry and to install.Can be used for the research applications such as beam forming, precision ranging, satellite synchronization communication.
Description of drawings
Fig. 1 is the theory diagram that the present invention realizes.
Fig. 2 is the frequency synthesizer schematic diagram.
Fig. 3 is the upconverter schematic diagram.
Fig. 4 is the mixer schematic diagram.
Fig. 5 is the splitter schematic diagram.
Fig. 6 is the phase comparator schematic diagram.
Fig. 7 is the analog to digital converter schematic diagram.
Fig. 8 is the digital to analog converter schematic diagram.
Fig. 9 is the phase shifter schematic diagram.
Figure 10 is Fundamentals of Mono-Chip Computers figure.
Figure 11 is radio receiving transmitting module and single-chip microcomputer catenation principle figure.
In figure: 1, frequency synthesizer, 2, frequency synthesizer, 3, mixer, 4, upconverter, 5, phase comparator, 6, analog to digital converter ADC, 7, single-chip microprocessor MCU, 8, radio receiving transmitting module, 9, splitter, 10, upconverter, 11, phase shifter, 12, digital to analog converter DAC, 13, single-chip microprocessor MCU, 14, radio receiving transmitting module.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, system of the present invention comprises main transceiver and from transceiver; Wherein:
In main transceiver, two- way frequency synthesizer 1,2 output all are divided into two-way, one tunnel access mixer 3 inputs, the input of another road access upconverter 4, mixer 3 with the signal of these two frequencies through antenna transmission to from transceiver, and be connected to the input of splitter 9, upconverter 4 outputs are divided into two-way, one the tunnel connects the input of phase comparator 5, and another road is as the output of main transceiver; The output of phase comparator 5 is emitted to radio receiving transmitting module 14 from transceiver through analog to digital converter ADC6, single-chip microprocessor MCU 7 output data through radio receiving transmitting module 8.
From transceiver, two outputs of splitter 9 are connected to two inputs of another upconverter 10, the output of another upconverter 10 is divided into two-way, one the tunnel launches back main transceiver as feedback signal, and being connected to another input of phase comparator 5, another road is connected to the input of phase shifter 11; The output data of another radio receiving transmitting module 14 connect the voltage-controlled end of phase shifter 11 through another single-chip microprocessor MCU 13, digital to analog converter DAC12; The output of phase shifter 11 is as the output from transceiver.
Main transceiver obtains useful signal by up-conversion from transceiver, and this signal feedback is launched back main transceiver to from the transceiver transmit signal from receive signal; Relatively obtain transmitting and the phase difference of feedback signal at main transceiver, and this phase difference is carried out " except 2 " process, be transmitted to from transceiver after the data digital modulation after processing; According to the phase information that receives, the useful signal that up-conversion obtains is carried out phase shift from transceiver, thereby realize that principal and subordinate's transceiver output signal is with the frequency homophase.
Be emitted to from the letter machine and then through feeding back to the situation of main letter machine from the letter machine by main letter machine based on useful signal, the phase difference of 5 two input signals of phase comparator is the twice of the phase difference that causes of one way distance, and " except 2 " processed and eliminated this impact.This processing has simultaneously also comprised the judgement of phase ambiguity.
Synthetic riches all the way penetrates with the signal of main transceiver different frequency for described mixer 3.
Described phase shifter 11 is analog phase shifter, phase shift range: 0 °, and 360 °.
Described two frequency comprehensive circuits 1,2 select phase-locked loop chip to build.
Described radio receiving transmitting module 7,13 is selected integrated multi-channel embedded radio transceiver module.
As shown in Figure 2, described two frequency synthesizers 1, the 2 chip ADF4360-9 by ADI company build.
As shown in Figure 3, described two upconverter 4,10 ADE-11X chip and peripheral electric capacity thereof by MINICIRCUITS company, the elements such as inductance.
As shown in Figure 4, described mixer 3 is selected the ADP-2-10-75M+ chip of MINICIRCUITS company.
As shown in Figure 5, described splitter 9 is selected the ADP-2-10-75M+ chip of MINICIRCUITS company.
As shown in Figure 6, described phase comparator 5 comprises AD8302 chip and the elements such as peripheral resistance, electric capacity thereof of ADI company.
As shown in Figure 7, described analog to digital converter ADC6 selects the AD7277 chip of ADI company.
As shown in Figure 8, described digital to analog converter DAC12 selects the AD5310 chip of ADI company.
As shown in Figure 9, described phase shifter 11 comprises the elements such as the PS088-315 chip of SKYWORKS company and peripheral electric capacity thereof.
As shown in figure 10, described two single- chip microprocessor MCU 7,13 comprise ATmega88 chip and the elements such as peripheral electric capacity, crystal oscillator thereof of atmel corp.
As shown in figure 11, described radio receiving transmitting module 8,14 is all selected the DT290 radio receiving transmitting module of well-informed scientific ﹠ technical corporation of Shenzhen section.The RXD of this module is connected with single-chip microcomputer TXD, and TXD is connected with single-chip microcomputer RXD, and the EN termination is received the high level from single-chip microcomputer.
Concrete operating scheme of the present invention:
As shown in Figure 1, at main transceiver, the simple signals of establishing two frequency synthesizers 1,2 generations are respectively: f
1∠ Q
1, f
2∠ Q
2(Q
1, Q
2Be first phase).Two signals are divided into two-way, one road f
1∠ Q
1, f
2∠ Q
2Gone out by antenna transmission through mixer.Another road f
1∠ Q
1, f
2∠ Q
2Be f after upconverter 4
1+ f
2∠ Q
1+ Q
2, the output signal that this is main transceiver is designated as: f
0∠ Q
0=f
1+ f
2∠ Q
1+ Q
2Suppose that the distance between principal and subordinate's transceiver is L, two signals are because the phase difference that distance produces is respectively: φ
1=2 π f
1L/v
p, φ
2=2 π f
2L/v
p(v wherein
pPropagation velocity for signal), two signals that receive from transceiver are respectively f
1∠ Q
1-φ
1, f
2∠ Q
2-φ
2, f
1∠ Q
1-φ
1With f
2∠ Q
2-φ
2Be f after another upconverter 10 mixing
1+ f
2∠ Q
1+ Q
2-φ
1-φ
2, be f
0∠ Q
0-φ
0(φ
0=φ
1+ φ
2, equaling frequency is f
0The phase place of the rear generation of signal transmission L distance lag behind), this signal is f when transmission space L feeds back to main transceiver
0∠ Q
0-2 φ
0At main transceiver, feedback signal f
0∠ Q
0-2 φ
0Output signal f with main transceiver
0∠ Q
0Carry out the phase bit comparison at phase comparator, phase comparator output and two signal phase difference 2 φ
0Proportional direct voltage carries out " except 2 " with this direct voltage through the data of analog to digital converter ADC6 sampling and processes (comprising the phase ambiguity processing) in single-chip microprocessor MCU 7, making the data that obtain is the phase difference that transmission range L causes
0Proportional dc voltage value, then these data are sent to from transceiver through radio receiving transmitting module 8.From transceiver, after another radio receiving transmitting module 14 poor information of receiving phase, to reduce through another single-chip microprocessor MCU 13 and digital to analog converter DAC12, the DC level of digital to analog converter DAC12 output is controlled the phase shift of phase shifter 11.Like this, just the phase difference compensation of principal and subordinate's transceiver output signal can be fallen, realize principal and subordinate's output signal with homophase frequently, and do not change with the variation of both relative distances.
Claims (3)
1. the phase-locked system of a spatial distribution unit is characterized in that: system comprises main transceiver and from transceiver; Wherein:
In main transceiver, the output of two-way frequency synthesizer (1,2) all is divided into two-way, one tunnel access mixer (3) input, the input of another road access upconverter (4), mixer (3) with the signal of these two frequencies through antenna transmission to from transceiver, and be connected to the input of splitter (9), upconverter (4) output is divided into two-way, one the tunnel connects the input of phase comparator (5), and another road is as the output of main transceiver; The output of phase comparator (5) is through analog to digital converter ADC(6), single-chip microprocessor MCU (7) output data are emitted to radio receiving transmitting module (14) from transceiver through radio receiving transmitting module (8);
From transceiver, two outputs of splitter (9) are connected to two inputs of another upconverter (10), the output of another upconverter (10) is divided into two-way, one the tunnel launches back main transceiver as feedback signal, and being connected to another input of phase comparator (5), another road is connected to the input of phase shifter (11); The output data of another radio receiving transmitting module (14) are through another single-chip microprocessor MCU (13), digital to analog converter DAC(12) connect the voltage-controlled end of phase shifter (11); The output of phase shifter (11) is as the output from transceiver.
2. the phase-locked system of a kind of spatial distribution according to claim 1 unit, it is characterized in that: described phase shifter (11) is analog phase shifter, and phase shift range is-180 °～+ 180 °.
3. the phase-locked system of a kind of spatial distribution according to claim 1 unit, it is characterized in that: described two radio receiving transmitting modules (8,14) are selected integrated multi-channel embedded radio transceiver module.
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| CN201310294743.XA CN103384194B (en) | 2013-07-11 | 2013-07-11 | The phase-locked system of spatial distribution unit |
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| CN103384194B CN103384194B (en) | 2016-08-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645658A (en) * | 2013-11-25 | 2014-03-19 | 北京经纬恒润科技有限公司 | Method and device for phase synchronization of multiple signal converters and FPGA (field programmable gate array) controller |
| CN104168017A (en) * | 2014-08-14 | 2014-11-26 | 浙江大学 | Phase synchronous system between uniform-motion wireless systems |
| CN105577352A (en) * | 2015-12-11 | 2016-05-11 | 浙江大学 | Digitalization remote phase synchronization method and system achieved based on phase domains |
| CN108375755A (en) * | 2017-01-24 | 2018-08-07 | 通用汽车环球科技运作有限责任公司 | The synchronization of spatially distributed radar |
| CN109188477A (en) * | 2018-08-21 | 2019-01-11 | 重庆大学 | A kind of spatially distributed phase-locked system |
| CN111049582A (en) * | 2019-12-17 | 2020-04-21 | 北京无线电计量测试研究所 | Microwave signal real-time synchronization device and method based on microwave photon technology |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645658A (en) * | 2013-11-25 | 2014-03-19 | 北京经纬恒润科技有限公司 | Method and device for phase synchronization of multiple signal converters and FPGA (field programmable gate array) controller |
| CN103645658B (en) * | 2013-11-25 | 2016-02-10 | 北京经纬恒润科技有限公司 | A kind of phase synchronization method of multi-disc signal converter, device and FPGA controller |
| CN104168017A (en) * | 2014-08-14 | 2014-11-26 | 浙江大学 | Phase synchronous system between uniform-motion wireless systems |
| CN104168017B (en) * | 2014-08-14 | 2017-06-23 | 浙江大学 | Phase-locked system between uniform motion wireless system |
| CN105577352A (en) * | 2015-12-11 | 2016-05-11 | 浙江大学 | Digitalization remote phase synchronization method and system achieved based on phase domains |
| CN105577352B (en) * | 2015-12-11 | 2018-05-15 | 浙江大学 | The long-range phase synchronization method of digitlization and system realized based on phase field |
| CN108375755A (en) * | 2017-01-24 | 2018-08-07 | 通用汽车环球科技运作有限责任公司 | The synchronization of spatially distributed radar |
| CN109188477A (en) * | 2018-08-21 | 2019-01-11 | 重庆大学 | A kind of spatially distributed phase-locked system |
| CN111049582A (en) * | 2019-12-17 | 2020-04-21 | 北京无线电计量测试研究所 | Microwave signal real-time synchronization device and method based on microwave photon technology |
| CN111049582B (en) * | 2019-12-17 | 2021-12-14 | 北京无线电计量测试研究所 | Microwave signal real-time synchronization device and method based on microwave photon technology |
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| CN103384194B (en) | 2016-08-10 |
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