CN109031208A - A kind of digital array submatrix processing module of SKA low frequency array of apertures - Google Patents
A kind of digital array submatrix processing module of SKA low frequency array of apertures Download PDFInfo
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- CN109031208A CN109031208A CN201810923204.0A CN201810923204A CN109031208A CN 109031208 A CN109031208 A CN 109031208A CN 201810923204 A CN201810923204 A CN 201810923204A CN 109031208 A CN109031208 A CN 109031208A
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- digital
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- low frequency
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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
Abstract
The invention discloses a kind of digital array submatrix processing modules of SKA low frequency array of apertures, two layers of one layer of the reception and reception respectively include successively transmitting the photoelectric conversion circuit of signal, compensation amplifying circuit, switched filter circuit and numerical control attenuation circuit, the signal processing subsystem includes digital layer, the number layer includes analog to digital conversion circuit, digital signal processing circuit, frequency source circuit and the DC/DC power supply for successively transmitting signal, analog-digital conversion circuit as described connects numerical control attenuation circuit, described to receive one layer, receive two layers and digital layer composition three-decker.SKA low frequency array of apertures CTPM of the invention designs 32 channel integrals, constitute a basic unit of SKA low-frequency radio telescope, it by the undistorted amplification of electromagnetic signal that 16 dual polarized antenna units of SKA low frequency array of apertures receive, digitizes and realizes digital beam froming function, finally export digital beam froming result to SKA low-frequency radio telescope follow-up link.
Description
Technical field
The present invention relates to active electricity to sweep phased-array technique field more particularly to a kind of number of SKA low frequency array of apertures
Word array submatrix processing module.
Background technique
SKA is super large astronomical telescope network, and radio astronomy technology obtains the promotion of Radar Technology development in World War II, builds
If a large amount of single port diameter parabolic radio astronomy devices.As semiconductor technology continues to develop, Radar Technology is drilled from passive array
Become active array, then digital array till now, system constantly reconstructs and evolution, form are changed, and has pushed number
The development of array system radio astronomy device, core connotation are in number and realization Wave beam forming, the basic principle is that by day
After the electromagnetic signal digitlization that line receives, width is carried out in numeric field and is mutually weighted, digital array system radio telescope has width
Phase control precision is high, can full airspace the features such as forming simultaneous multiple beams, adaptive nulling, and in systems technology, number
Word array system radio telescope has the characteristics that tour the heavens, and speed is fast, beam-pointing accuracy is high, strong anti-interference performance, becomes radio
The important developing direction of astronomical device.
Be as shown in Figure 1 the conventional radio astronomy device composition block diagram of tradition, the routine radio astronomy device only one
Wave beam is rotated by machinery and changes beam position, and A is to receive amplification in figure, and B is digitlization and compensation of delay processing, and C is correlation
Processing includes correction, and grid division, Fourier transformation finally obtains sky image.
Summary of the invention
Technical problem to be solved by the present invention lies in: existing only one wave beam of radio astronomy device provides one kind
The digital array submatrix processing module of SKA low frequency array of apertures.
The present invention is to solve above-mentioned technical problem by the following technical programs, a kind of SKA low frequency array of apertures of the present invention
CTPM (China Tile Processing Module, Chinese Digital array submatrix processing module) include HF receiving subsystem and
Signal processing subsystem；The HF receiving subsystem include structure it is identical receive one layer and receive two layers, it is described receive one layer and
It receives two layers and respectively includes successively transmitting the photoelectric conversion circuit of signal, compensation amplifying circuit, switched filter circuit and numerical control and decline
Powered down road, the signal processing subsystem include digital layer, the number layer include the analog to digital conversion circuit for successively transmitting signal,
Digital signal processing circuit, frequency source circuit and DC/DC power supply, analog-digital conversion circuit as described connects numerical control attenuation circuit, described
It receives one layer, receive two layers and digital layer composition three-decker.
The HF receiving subsystem includes 32 tunnel receiving channels, and one floor of the reception and two floor of reception respectively include the reception of 16 tunnels
Channel, it is described to receive one layer and receive two layers of polarization side that reception one submatrix of SKA low frequency array of apertures receives respectively
Upward electromagnetic signal, the electromagnetic signal in a polarization direction of SKA low frequency array of apertures include 16 road signals.
One floor of the reception connects 16 road signals by 1 MPO optical connector respectively with two floor are received.
The faint radio frequency optical signal that the MPO optical connector transmits SKA low frequency array of apertures submatrix inputs photoelectric conversion
Circuit is transformed into radiofrequency signal.
The compensation amplifying circuit compensates amplification to the radiofrequency signal of input, is sent into switched filter circuit.
The switched filter circuit is switched over according to system requirements, carries out bandpass filtering to the radiofrequency signal of input, and
Filtered signal is sent into numerical control attenuation circuit.
The radiofrequency signal of input is carried out amplitude fading according to system requirements by the numerical control attenuation circuit, is sent into analog-to-digital conversion
Circuit.
The signal processing subsystem carries out analog-to-digital conversion to the 32 tunnel radiofrequency signals that HF receiving subsystem exports and is transferred to
In digital signal processing circuit, complete to extend compensation, channelizing, digital beam froming in digital signal processing circuit.
The digital signal processing circuit is by the digital beam froming of gained digital beam froming result and a upper submatrix
Results added will add up result and transmit between digital signal processing circuit, and output submatrix digital beam froming is added to arrive at a station wave
Beam forms and is transmitted to next link.
The clock signal that the frequency source circuit inputs system is handled, what the DC/DC power supply inputted system
DC power supply carries out DC/DC transformation.
The present invention has the advantage that SKA low frequency array of apertures CTPM of the invention by 32 channels compared with prior art
Integrated design constitutes a basic unit of SKA low-frequency radio telescope, by 16 dual polarization days of SKA low frequency array of apertures
Amplification that the electromagnetic signal that line unit receives is undistorted digitizes and realizes digital beam froming function, finally by digital beam
Result is formed to export to SKA low-frequency radio telescope follow-up link.
While present invention electricity function index needed for guarantee system, multiple basic receiving channels are integrated in one
In SKA low frequency array of apertures CTPM, the available resource of system and large-scale production technology are made full use of, improves circuit level
And utilization rate, the volume of SKA low frequency array of apertures CTPM, weight, power consumption are reduced to the maximum extent and reduce manufacturing cost, thus
Guarantee to greatly reduce volume, weight, power consumption and the manufacturing cost of system, meet and produce in enormous quantities and the requirement of debugging,
Further promote the application of array of apertures engineering, improves competitiveness.
Detailed description of the invention
Fig. 1 is traditional conventional radio astronomy device composition block diagram；
Fig. 2 is digital array system radio astronomy device composition block diagram of the present invention；
Fig. 3 is SKA low frequency array of apertures composition block diagram；
Fig. 4 is SKA low frequency array of apertures CTPM system block diagram.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
As shown in Fig. 2, digital array system radio astronomy device composition block diagram of the invention, the digital array system are penetrated
Electric astronomy device carries out width in numeric field and mutually weights, and can form simultaneous multiple beams in full airspace, be handled and changed by digital domain signal
Become beam position, B ' is digitlization, compensation of delay and Wave beam forming in figure.
As shown in figure 3, SKA low frequency array of apertures CTPM is digital array system radio astronomy device nucleus module, it is described
SKA low frequency array of apertures CTPM using High Density Integration design, first using mixing monolithic integrated optical circuit technique, 32 are connect
For the design of receipts channel in two pieces of printed boards, every piece of printed board includes 16 receiving channels, respectively receives one layer and two layers of reception,
Then one layer will be received and receive two layers and be integrated into HF receiving subsystem；And analog to digital conversion circuit, digital signal processing circuit, frequency
Source circuit, DC/DC power supply are integrated in signal processing subsystem.HF receiving subsystem and signal processing subsystem are mounted on shell
Middle formation SKA low frequency array of apertures CTPM.
It can be seen from the above description that SKA low frequency array of apertures CTPM is by multiple independent basic receiving channel sum numbers
Word channel forms after integrating in shell.The factors such as volume, manufacturing cost, the power consumption of SKA low frequency array of apertures CTPM determine
Determine the factors such as manufacturing cost, operation cost, the reliability of digital array system radio astronomy device.In order to meet Digital Arrays
Column system radio astronomy apparatus system demand, it is necessary to which highly integrated Miniaturization Design is carried out to CTPM.
As shown in figure 4, SKA low frequency array of apertures CTPM, as the basic module of SKA low-frequency radio telescope, by 32
Basic channel integral design, makes full use of the resource of offer, has good expandability, can satisfy SKA low frequency radio
The total unit number of telescope is generally 2NThe requirement of (N > 16) forms digital array body by multiple SKA low frequency array of apertures CTPM
Low-frequency radio telescope processed.
The CTPM of the SKA low frequency array of apertures of the present embodiment includes HF receiving subsystem and signal processing subsystem；It is described to connect
Contracture system includes one layer of the identical reception of structure and receives two layers, and two layers with reception of one layer of the reception respectively include successively passing
Photoelectric conversion circuit 1, compensation amplifying circuit 2, switched filter circuit 3 and the numerical control attenuation circuit 4 of defeated signal, the signal processing
Subsystem includes digital layer, the number layer include the analog to digital conversion circuit 5 for successively transmitting signal, digital signal processing circuit 6,
Frequency source circuit and DC/DC power supply, analog-digital conversion circuit as described 5 connects numerical control attenuation circuit 4, described to receive one layer, receive two
Layer and digital layer constitute three-decker.
The HF receiving subsystem includes 32 tunnel receiving channels, and one floor of the reception and two floor of reception respectively include the reception of 16 tunnels
Channel, it is described to receive one layer and receive two layers of polarization side that reception one submatrix of SKA low frequency array of apertures receives respectively
Upward electromagnetic signal, the electromagnetic signal in a polarization direction of SKA low frequency array of apertures include 16 road signals.
One floor of the reception and two floor of reception connect 16 road signals by 1 MPO optical connector 7 respectively.
The faint radio frequency optical signal that the MPO optical connector 7 transmits SKA low frequency array of apertures submatrix inputs photoelectric conversion
Circuit 1, is transformed into radiofrequency signal.
The radiofrequency signal of 2 pairs of the amplifying circuit inputs of compensation compensates amplification, is sent into switched filter circuit 3.
The switched filter circuit 3 is switched over according to system requirements, carries out bandpass filtering to the radiofrequency signal of input, and
Filtered signal is sent into numerical control attenuation circuit 4.
The radiofrequency signal of input is carried out amplitude fading according to system requirements by the numerical control attenuation circuit 4, is sent into modulus and is turned
Change circuit 5.
The signal processing subsystem carries out analog-to-digital conversion to the 32 tunnel radiofrequency signals that HF receiving subsystem exports and is transferred to
In digital signal processing circuit 6, complete to extend compensation, channelizing, digital beam froming in digital signal processing circuit 6.
The digital signal processing circuit 6 is by the digital beam froming of gained digital beam froming result and a upper submatrix
Results added will add up result and transmit between digital signal processing circuit 6, and output submatrix digital beam froming is added to arrive at a station wave
Beam, which forms and passes through digital fiber module e/o, is transmitted to next link.
The clock signal that the frequency source circuit inputs system is handled, for generating analog to digital conversion circuit 5, Gao Xing
Clock needed for energy computing chip.
The DC/DC power supply carries out DC/DC transformation to the DC power supply that system inputs, various voltages needed for obtaining.
SKA low frequency array of apertures CTPM uses " mouth organ " framework of 6U plate card type, is integrated with 32 paths, has submatrix wave
Beam is formed and station beamforming function, solves the problems, such as the received electromagnetic signal processing of one submatrix of SKA low frequency array of apertures, makes
Performance meets system requirement.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of digital array submatrix processing module of SKA low frequency array of apertures, which is characterized in that including HF receiving subsystem and letter
Number processing subsystem；The HF receiving subsystem, which includes that structure is identical, to be received one layer and receives two layers, and described receive and connects by one layer
Two layers are received to respectively include successively transmitting the photoelectric conversion circuit of signal, compensation amplifying circuit, switched filter circuit and numerical control attenuation
Circuit, the signal processing subsystem include digital layer, and the number layer includes analog to digital conversion circuit, the number for successively transmitting signal
Word signal processing circuit, frequency source circuit and DC/DC power supply, analog-digital conversion circuit as described connects numerical control attenuation circuit, described to connect
It receives one layer, receive two layers and digital layer composition three-decker.
2. a kind of digital array submatrix processing module of SKA low frequency array of apertures according to claim 1, feature exist
In, the HF receiving subsystem includes 32 tunnel receiving channels, and one floor of the reception and two floor of reception respectively include 16 tunnel receiving channels,
It is described to receive one layer and receive in two layers of polarization direction that reception one submatrix of SKA low frequency array of apertures receives respectively
Electromagnetic signal, the electromagnetic signal in a polarization direction of SKA low frequency array of apertures include 16 road signals.
3. a kind of digital array submatrix processing module of SKA low frequency array of apertures according to claim 2, feature exist
In one floor of the reception connects 16 road signals by 1 MPO optical connector respectively with two floor are received.
4. a kind of digital array submatrix processing module of SKA low frequency array of apertures according to claim 3, feature exist
In, the faint radio frequency optical signal that the MPO optical connector transmits SKA low frequency array of apertures submatrix inputs photoelectric conversion circuit,
It is transformed into radiofrequency signal.
5. a kind of digital array submatrix processing module of SKA low frequency array of apertures according to claim 4, feature exist
In the compensation amplifying circuit compensates amplification to the radiofrequency signal of input, is sent into switched filter circuit.
6. a kind of digital array submatrix processing module of SKA low frequency array of apertures according to claim 5, feature exist
In the switched filter circuit is switched over according to system requirements, carries out bandpass filtering to the radiofrequency signal of input, and will filtering
Signal afterwards is sent into numerical control attenuation circuit.
7. a kind of digital array submatrix processing module of SKA low frequency array of apertures according to claim 6, feature exist
In the radiofrequency signal of input is carried out amplitude fading according to system requirements by the numerical control attenuation circuit, is sent into analog to digital conversion circuit.
8. a kind of digital array submatrix processing module of SKA low frequency array of apertures according to claim 7, feature exist
In the signal processing subsystem carries out analog-to-digital conversion to the 32 tunnel radiofrequency signals that HF receiving subsystem exports and is transferred to digital letter
In number processing circuit, complete to extend compensation, channelizing, digital beam froming in digital signal processing circuit.
9. a kind of digital array submatrix processing module of SKA low frequency array of apertures according to claim 8, feature exist
In, the digital signal processing circuit by the digital beam froming result phase of gained digital beam froming result and a upper submatrix
Add, will add up result and transmitted between digital signal processing circuit, output submatrix digital beam froming is added to arrive at a station Wave beam forming
And it is transmitted to next link.
10. a kind of digital array submatrix processing module of SKA low frequency array of apertures according to claim 1, feature exist
In the clock signal that the frequency source circuit inputs system is handled, the direct current that the DC/DC power supply inputs system
Source carries out DC/DC transformation.
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Citations (6)
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| CN103916154A (en) * | 2012-12-28 | 2014-07-09 | 国际商业机器公司 | Scalable Polarimetric Phased Array Transceiver |
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2018
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Patent Citations (6)
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| CN103916154A (en) * | 2012-12-28 | 2014-07-09 | 国际商业机器公司 | Scalable Polarimetric Phased Array Transceiver |
| CN104090269A (en) * | 2014-07-05 | 2014-10-08 | 中国船舶重工集团公司第七二四研究所 | Dual-polarization multifunctional ultra wide band T/R module |
| CN104330801A (en) * | 2014-11-15 | 2015-02-04 | 安徽四创电子股份有限公司 | Active phased array weather radar system based on full-digital array |
| CN105914476A (en) * | 2016-05-20 | 2016-08-31 | 中国电子科技集团公司第十研究所 | Ka-band tilt-structure active phased array antenna |
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Non-Patent Citations (1)
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Application publication date: 20181218 |