CN105974369A - Multipath all-phase microwave numerical-control phase shifter control system and method - Google Patents
Multipath all-phase microwave numerical-control phase shifter control system and method Download PDFInfo
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- CN105974369A CN105974369A CN201610492033.1A CN201610492033A CN105974369A CN 105974369 A CN105974369 A CN 105974369A CN 201610492033 A CN201610492033 A CN 201610492033A CN 105974369 A CN105974369 A CN 105974369A
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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Abstract
The invention discloses a multipath all-phase microwave numerical-control phase shifter control system, and the system comprises a far end and a local end. The far end comprises control software, a computer and an optical fiber transceiver A, wherein the control software, the computer and the optical fiber transceiver A are connected sequentially. The local end comprises an optical fiber transceiver B, a serial port server, a time sequence controller and a numerical control phase shifter, wherein the optical fiber transceiver B, the serial port server, the time sequence controller and the numerical-control phase shifter are connected sequentially. The optical fiber transceiver A and the optical fiber transceiver B are used for receiving and transmitting optical fiber signals in a paired manner. The system enables a numerical-control phase shifter to achieve large-scale phase shift (0-360 degrees) in a high-frequency range, employs a mode of the serial port server + the time sequence controller for design , simplifies the connection of external cables, improves the reliability of systems, effectively solves problems that the phase precision decreases after the phase shifter carries out 180-degree shift (reverse) and there is a nonlinear change, and guarantees that the phase precision is less than 2.5 degrees.
Description
Technical field
The invention belongs to radar system and microwave technical field, be specifically related to a kind of multichannel all phase Microwave Digital Controlled Phase Shifter control system and method.
Background technology
Digital phase shifter is widely used in radar system and microwave telecommunication system, especially phased-array radar, phased array antenna feed system etc..As elementary cell and the core component of phased array radar system, T/R assembly is directly connected to the quality of whole phased-array radar, and digital phase shifter is the important component part of T/R assembly, so the research for digital phase shifter seems very urgent and important.In carrier wave coherent measurement or communication system, it is often necessary to use the phase shifter that signal carries out accurate program control phase shift operation.
The main technical specification of phase shifter is phase shift ability, and compared with digital phase shifter, existing most of phase shifter circuits mainly use analog device to realize phase shift, and recycling digital-to-analog converter controls the mode of varactor or semiconductor switch and realizes numerical control interface.Due to the temperature drift attribute that analog circuit is intrinsic, the temperature stability of this kind of circuit is the highest.Therefore phase equalization changes and uncontrollable with the change of ambient temperature.
It is thus desirable to a kind of novel multichannel all phase Microwave Digital Controlled Phase Shifter control system avoids the generation of drawbacks described above.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of big multichannel all phase Microwave Digital Controlled Phase Shifter control system and method, having accurate frequency resolution, the fast frequency conversion outstanding advantages such as time and low phase noise, the follow-up developments for phased array technology provide effective technological approaches.
A kind of multichannel all phase Microwave Digital Controlled Phase Shifter control system, described control system includes remote port and local side, described remote port includes control software, computer and the fiber optical transceiver A being sequentially connected with, described local side includes fiber optical transceiver B, serial server, time schedule controller and the digital phase shifter being sequentially connected with, described fiber optical transceiver A and described fiber optical transceiver B match uses mutually, transmitting-receiving fiber-optic signal.
Preferably, described control system realizes 0 ~ 360 large-scale phase shift at high-frequency range.
Preferably, the phase shifting accuracy of described control system is less than 2.5.
Preferably, described control system uses 8 high precision numerical control phase shifters of multichannel to carry out phase shift.
Preferably, described fiber optical transceiver A or fiber optical transceiver B is optical fiber switch or optical switch module.
Described multichannel all phase Microwave Digital Controlled Phase Shifter control system has a following control method:
S1, the computer of described remote port is interconnected by fiber optical transceiver or optical fiber switch and the fiber optical transceiver of local side or optical fiber switch；
S2, described host computer is needed the angle of phase shift, is sent to the serial server of local side by network by controlling software design patterns；
S3, described serial server is sent to time schedule controller by multi-channel serial port, time schedule controller be converted into Transistor-Transistor Logic level according to the phase shift number of degrees arranged, and controls digital phase shifter respectively and carries out phase shift.
Technical scheme has the advantages that
A kind of multichannel all phase Microwave Digital Controlled Phase Shifter control system of present invention offer and method, the high-precision regulation of phase place is realized with DDS for core, stable performance, it have employed digital structure, having accurate frequency resolution, the fast frequency conversion outstanding advantages such as time and low phase noise, the follow-up developments for phased array technology provide effective technological approaches.null0 ~ 360 large-scale phase shift is achieved at high-frequency range，The mode using " serial server+time schedule controller " designs the control system of multichannel phase shifter，Simplify External cable to connect，The reliability of raising system，Effectively solve to diminish at phase shifter phase accuracy after 180 ° (reversely)，The problem that there is nonlinear change，Ensure that phase shifting accuracy is less than 2.5，Numerical control phase shift technology is introduced in phased array radar system，Digital T/R module is become to replace with it for core group original by the phase shifter、Unequal power divider、The simulation T/R module that microwave attenuator etc. are constituted,Both various radar waveform such as linearity and non-linearity FM pulse compression waveform can have been produced easily、Two-phase and polyphase codes pulse compression waveform and coherent pulse string waveform etc.,Waveform agile and wideband frequency agile can be controlled again quickly，More flexibly aerial array can be carried out phase and amplitude weighting,Simplify radar system structure、Reduce radar machine volume.
Accompanying drawing explanation
Below by drawings and Examples, technical scheme is described in further detail.
Fig. 1 is multichannel all phase Microwave Digital Controlled Phase Shifter Control system architecture figure of the present invention.
Detailed description of the invention
In order to have a clear understanding of technical scheme, its detailed structure be will be set forth in the description that follows.Obviously, the concrete also deficiency of implementing of the embodiment of the present invention is limited to the specific details that those skilled in the art is familiar with.The preferred embodiments of the present invention are described in detail as follows, in addition to these embodiments described in detail, it is also possible to have other embodiments.
With embodiment, the present invention is described in further details below in conjunction with the accompanying drawings.
Digital phase shifter mainly realizes the high-precision regulation of phase place with DDS for core, it is not likely to produce temperature drift, stable performance, it have employed digital structure, having accurate frequency resolution, the fast frequency conversion outstanding advantages such as time and low phase noise, the follow-up developments for phased array technology provide effective technological approaches.Numerical control phase shift technology is introduced in phased array radar system, digital T/R module is become to replace the simulation T/R module being originally made up of phase shifter, unequal power divider, microwave attenuator etc. with it for core group, both various radar waveform such as linearity and non-linearity FM pulse compression waveform, two-phase and polyphase codes pulse compression waveform and coherent pulse string waveform etc. can have been produced easily, waveform agile and wideband frequency agile can be controlled again quickly, more flexibly aerial array can be carried out phase and amplitude weighting, simplify radar system structure, reduce radar machine volume.
One multichannel all phase Microwave Digital Controlled Phase Shifter control system of the present invention and method, described control system includes remote port and local side, system structure such as Fig. 1: described remote port includes the control software being sequentially connected with, computer and fiber optical transceiver A, described local side includes the fiber optic service device B being sequentially connected with, serial server, time schedule controller and digital phase shifter, described fiber optical transceiver A is electrically connected to each other with described fiber optic service device B, described control system realizes the phase shifting accuracy of control system described in 0 ~ 360 large-scale phase shift less than 2.5 at high-frequency range, described control system uses 8 high precision numerical control phase shifter phase shifts of multichannel to carry out phase shift, described fiber optical transceiver A or fiber optical transceiver B is optical fiber switch or optical switch module.
Described multichannel all phase Microwave Digital Controlled Phase Shifter control system realizes 0 ~ 360 large-scale phase shift at high-frequency range, and phase shifting accuracy is less than 2.5, uses 8 high precision numerical control phase shifters of multichannel to carry out phase shift.Formed by 8 binary numeral combinations of computer control output D0 position to D7 position and need the angle of phase shift, digital controlled signal is input to D/A, and form 2 tunnel orthogonal signalling after conversion, modulated signal as radio frequency vector modulator, thus complete phase shift determined by digital controlled signal, it is achieved the controlled phase shift function of digital phase shifter.As can be seen here, the digital controlled signal inputted by change, i.e. may utilize digital phase shifter and realize the phase shift function of 0 ~ 360 all phase.
Described multichannel all phase Microwave Digital Controlled Phase Shifter control system uses the mode of " serial server+time schedule controller " to design the control system of multichannel phase shifter, simplifies External cable and connects, improves the reliability of system.Owing to the field apparatus of local side exists stronger radiation interference, in order to avoid the dry intense radiation impact on control system, therefore network uses single-mode fiber medium transmission；The multi-path digital-control phase shifter passes through serial ports and PERCOM peripheral communication, each phase shifter corresponding serial ports, if employing conventional design, serial ports is more with External cable, therefore, use the form of serial server in realization, serial server is exactly based on this kind of serial ports and is connected with multiple serial equipments and can be selected by serial data stream and process, packet the ICP/IP protocol from the Internet, resolve to serial data stream and be sent to each time schedule controller, multi-channel serial port is controlled by a road network output, so outside interface line only has a pair optical fiber netting twine, enormously simplify wiring, during especially the serial ports in ten multichannels controls, have only to a pair fiber optic network turnover connection can complete.This wire laying mode seems the easiest.Simultaneously because eliminate the conversion links in the middle of many, the reliability of communication can be improved greatly.
The method that described multichannel all phase Microwave Digital Controlled Phase Shifter control system is tabled look-up by software design, in advance by debugging, writes empirical value in software, can directly use empirical value after 180 °.Effectively solve to diminish at phase shifter phase accuracy after 180 ° (reversely), the problem that there is nonlinear change, it is ensured that phase shifting accuracy is less than 2.5.Meet the linear change of phase shift at high band, omnibearing accurate phase shift can be realized.
Described multichannel all phase Microwave Digital Controlled Phase Shifter control system has a following control method: 8 multichannel phase shifter control system be designed with distributed AC servo system architecture, interconnected by the fiber optical transceiver (or optical fiber switch) of fiber optical transceiver (or optical fiber switch) with local side by the host computer of remote port, need the angle of phase shift by controlling software design patterns by host computer, the serial server of local side it is sent to by network, it is sent to time schedule controller by multi-channel serial port again by serial server, it is converted into Transistor-Transistor Logic level according to the phase shift number of degrees arranged by time schedule controller, control digital phase shifter respectively and carry out phase shift.
nullA kind of multichannel all phase Microwave Digital Controlled Phase Shifter control system that the present invention provides，0 ~ 360 large-scale phase shift is achieved at high-frequency range，The mode using " serial server+time schedule controller " designs the control system of multichannel phase shifter，Simplify External cable to connect，The reliability of raising system，Effectively solve to diminish at phase shifter phase accuracy after 180 ° (reversely)，The problem that there is nonlinear change，Ensure that phase shifting accuracy is less than 2.5，Numerical control phase shift technology is introduced in phased array radar system，Digital T/R module is become to replace with it for core group original by the phase shifter、Unequal power divider、The simulation T/R module that microwave attenuator etc. are constituted,Both various radar waveform such as linearity and non-linearity FM pulse compression waveform can have been produced easily、Two-phase and polyphase codes pulse compression waveform and coherent pulse string waveform etc.,Waveform agile and wideband frequency agile can be controlled again quickly，More flexibly aerial array can be carried out phase and amplitude weighting,Simplify radar system structure、Reduce radar machine volume.
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit; although the present invention being described in detail with reference to above-described embodiment; the detailed description of the invention of the present invention still can be modified or equivalent by those of ordinary skill in the field; these are without departing from any amendment of spirit and scope of the invention or equivalent, all within the claims that application is awaited the reply.
Claims (6)
1. a multichannel all phase Microwave Digital Controlled Phase Shifter control system, it is characterized in that, described control system includes remote port and local side, described remote port includes control software, computer and the fiber optical transceiver A being sequentially connected with, described local side includes fiber optical transceiver B, serial server, time schedule controller and the digital phase shifter being sequentially connected with, described fiber optical transceiver A and described fiber optical transceiver B match uses mutually, transmitting-receiving fiber-optic signal.
Multichannel all phase Microwave Digital Controlled Phase Shifter control system the most according to claim 1, it is characterised in that described control system realizes 0 ~ 360 large-scale phase shift at high-frequency range.
Multichannel all phase Microwave Digital Controlled Phase Shifter control system the most according to claim 1, it is characterised in that the phase shifting accuracy of described control system is less than 2.5.
Multichannel all phase Microwave Digital Controlled Phase Shifter control system the most according to claim 1, it is characterised in that described control system uses 8 high precision numerical control phase shifters of multichannel to carry out phase shift.
Multichannel all phase Microwave Digital Controlled Phase Shifter control system the most according to claim 1, it is characterised in that described fiber optical transceiver A or fiber optical transceiver B is optical fiber switch or optical switch module.
6. according to the multichannel all phase Microwave Digital Controlled Phase Shifter control system described in claim 1-5 any one claim, it is characterised in that described multichannel all phase Microwave Digital Controlled Phase Shifter control system has a following control method:
S1, the computer of described remote port is interconnected by fiber optic receiver or optical fiber switch and the fiber optical transceiver of local side or optical fiber switch；
S2, described host computer is needed the angle of phase shift, is sent to the serial server of local side by network by controlling software design patterns；
S3, described serial server is sent to time schedule controller by multi-channel serial port, time schedule controller be converted into Transistor-Transistor Logic level according to the phase shift number of degrees arranged, and controls digital phase shifter respectively and carries out phase shift.
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Cited By (2)
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| CN107942776A (en) * | 2017-11-03 | 2018-04-20 | 成都赛英科技有限公司 | 8 temperature compensating type digital phase shifters |
| CN113608186A (en) * | 2021-09-13 | 2021-11-05 | 中国工程物理研究院应用电子学研究所 | Calibration method for radar system and photoelectric imaging system |
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| US7589576B2 (en) * | 2006-07-20 | 2009-09-15 | Sony Corporation | Phase shifter and phase shift method |
| CN203661039U (en) * | 2013-12-06 | 2014-06-18 | 北京北广科技股份有限公司 | Multipath synchronization digital phase shifter |
| CN104917489A (en) * | 2015-06-26 | 2015-09-16 | 武汉工程大学 | High-precision digital phase shifter |
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Cited By (3)
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| CN107942776A (en) * | 2017-11-03 | 2018-04-20 | 成都赛英科技有限公司 | 8 temperature compensating type digital phase shifters |
| CN113608186A (en) * | 2021-09-13 | 2021-11-05 | 中国工程物理研究院应用电子学研究所 | Calibration method for radar system and photoelectric imaging system |
| CN113608186B (en) * | 2021-09-13 | 2023-10-20 | 中国工程物理研究院应用电子学研究所 | Calibration method of radar system and photoelectric imaging system |
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