CN107329109A - The method of reseptance and device of a kind of array signal - Google Patents
The method of reseptance and device of a kind of array signal Download PDFInfo
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- CN107329109A CN107329109A CN201710475058.5A CN201710475058A CN107329109A CN 107329109 A CN107329109 A CN 107329109A CN 201710475058 A CN201710475058 A CN 201710475058A CN 107329109 A CN107329109 A CN 107329109A
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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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
- G01S3/143—Systems for determining direction or deviation from predetermined direction by vectorial combination of signals derived from differently oriented antennae
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- Engineering & Computer Science (AREA)
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- Radar, Positioning & Navigation (AREA)
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of method of reseptance of array signal and device.This method includes：To the N roads antenna array signals of reception, orthogonal modulation is carried out using N groups orthogonal code and the relevant clock signal synchronization of N groups, the N roads orthogonal array signal of same frequency same-phase, N >=2 is generated；By the N roads orthogonal array signal synthesis signal, and the signal all the way is sent into single channel tuner all the way of the same frequency same-phase.N roads antenna array signals are converted into signal all the way by realization so that single-channel receiver can receive N roads signal, simplify array signal reception system, saved system resource, reduce system power dissipation, improve the direction finding precision of array signal.
Description
Technical field
The present invention relates to communication technical field, and in particular to a kind of method and apparatus of receiving array signal.
Background technology
The reception processing technology of array signal is the core technology of signal reconnaissance and direction finding.At present, the reception of array signal
Treatment technology be mainly by array antenna received to signal transmitted by a timing difference, phase difference to multipath receiver, signal warp
Again by processes such as analog-to-digital conversion, demodulation after receiver amplification, mixing, filtering.For the reception of multiple signals, at present using many
Channel reception technology such as is amplified, is mixed, filters at the technical finesse to the signal of each passage respectively.Multichannel receiver is accounted for
It is big, it is necessary to substantial amounts of hardware with space, and high energy consumption.Although the port number of increase array signal can improve direction finding precision,
But the port number of array signal is consequently increased, 8 tunnels, 16 tunnels even 32 tunnels are changed into from 4 tunnels, signalling channel is more, receives system
System is more complicated, and array signal is difficult to quantitative correction and compensation by caused additional phase shift during multichannel receiver, leads
Final direction finding precision is caused to reduce.
The content of the invention
The invention provides a kind of method of reseptance of array signal and device, received with solving existing multichannel array signal
Machine occupancy resource is more, power consumption is big, system complex, the relatively low problem of direction finding precision.
According to an aspect of the invention, there is provided a kind of method of reseptance of array signal, this method includes：
To the N roads antenna array signals of reception, positive intermodulation is carried out using N groups orthogonal code and the relevant clock signal synchronization of N groups
System, generates the N roads orthogonal array signal of same frequency same-phase, N >=2；
By the N roads orthogonal array signal synthesis signal, and signal is transmitted all the way by described in all the way of the same frequency same-phase
To single channel tuner.
Preferably, in the N roads antenna array signals to reception, N groups orthogonal code and the relevant clock signal synchronization of N groups are used
Carry out before orthogonal modulation, methods described also includes：
Low noise power amplification processing is carried out to N roads antenna array signals.
Preferably, after by the N roads orthogonal array signal synthesis of the same frequency same-phase all the way signal, by described in
Signal is sent to before single channel tuner all the way, and methods described also includes：
The signal all the way of the synthesis is amplified processing, the signal after the enhanced processing is sent to the single-pass
Road tuner.
Preferably, methods described also includes：
The signal all the way exported using the relevant clock signal of the N groups to the single channel tuner is synchronized solution and mediated
Reason, generates corresponding N roads array signal.
According to another aspect of the present invention there is provided a kind of reception device of array signal, the device includes：
Synchronized orthogonal modulating unit, for the N roads antenna array signals to reception, during using N groups orthogonal code and relevant N groups
Clock signal synchronously carries out orthogonal modulation, generates the N roads orthogonal array signal of same frequency same-phase, N >=2；
Synthesis unit, for the N roads orthogonal array signal of the same frequency same-phase to be synthesized into signal all the way, and will be described
Signal is sent to single channel tuner all the way.
Preferably, described device also includes low noise amplification unit,
The low noise amplification unit, for carrying out low noise power amplification processing to N roads antenna array signals.
Preferably, described device also includes amplifying unit,
The amplifying unit, for the signal all the way of the synthesis to be amplified into processing, after the enhanced processing
Signal is sent to the single channel tuner.
Preferably, described device also includes demodulation process unit,
The demodulation process unit, for being concerned with what clock signal was exported to the single channel tuner using the N groups
Signal synchronizes demodulation process all the way, generates corresponding N roads array signal.
There is provided a kind of reception device of array signal according to a further aspect of the invention, it is characterised in that the dress
Put including memory and processor, the memory storage has can be by the computer program of the computing device, the meter
Calculation machine program can be realized above-mentioned method and step during the computing device.
The beneficial effects of the invention are as follows：Technical scheme, to the N roads antenna array signals of reception, using N groups just
Hand over code and the relevant clock signal synchronization of N groups to carry out orthogonal modulation, generate the N roads orthogonal array signal of same frequency same-phase, the N
≥2；By the N roads orthogonal array signal synthesis signal, and the signal all the way is sent into list all the way of the same frequency same-phase
N roads antenna array signals are converted into signal all the way by channel tuner, realization so that single-channel receiver can receive N roads letter
Number, array signal reception system is simplified, system resource has been saved, system power dissipation is reduced, the direction finding of array signal is improved
Precision.The quantity of antenna array signals especially to be measured is more, and advantage is more obvious, is highly suitable for direction finding, scouting etc..
Brief description of the drawings
Fig. 1 is a kind of structural representation of array signal reception device of one embodiment of the invention；
Fig. 2 is a kind of concrete structure schematic diagram of array signal reception device of one embodiment of the invention；
Fig. 3 is a kind of flow chart of array signal method of reseptance of one embodiment of the invention；
Fig. 4 is the structural representation of another array signal reception device of one embodiment of the invention.
Embodiment
The present invention design concept be：In order to which N roads antenna array signals are converted into signal all the way so that single channel is received
Machine can receive N roads signal, simplify array signal reception system, save system resource, reduce system power dissipation, lift array signal
Direction finding precision.To the N roads antenna array signals of reception, carried out using N groups orthogonal code and the relevant clock signal synchronization of N groups orthogonal
Modulation, generates the N roads orthogonal array signal of same frequency same-phase, and the N roads orthogonal array signal of the same frequency same-phase is closed
Into signal all the way.
Embodiment one
Fig. 1 is a kind of structural representation of array signal reception device of one embodiment of the invention, as shown in figure 1, one
The reception device of array signal is planted, the device 200 includes：
Synchronized orthogonal modulating unit 210, for the N roads antenna array signals to reception, uses N groups orthogonal code and N group phases
Dry clock signal synchronization carries out orthogonal modulation, generates the N roads orthogonal array signal of same frequency same-phase, N >=2；
Synthesis unit 220, for the N roads orthogonal array signal of the same frequency same-phase to be synthesized into signal all the way, and will
The signal all the way is sent to single channel tuner 230.
Pass through the device shown in Fig. 1, it is known that, technical scheme, to the N roads antenna array signals of reception, uses N
Group orthogonal code and the relevant clock signal synchronization of N groups carry out orthogonal modulation, generate the N roads orthogonal array signal of same frequency same-phase,
N >=2；By the N roads orthogonal array signal synthesis signal, and signal is transmitted all the way by described in all the way of the same frequency same-phase
To single channel tuner, N roads antenna array signals are converted into signal all the way by realization so that single-channel receiver can receive N
Road signal, simplifies array signal reception system, has saved system resource, reduce system power dissipation, improve array signal
Direction finding precision.The quantity of antenna array signals especially to be measured is more, and advantage is more obvious, is highly suitable for direction finding, scouting etc..
In one embodiment of the invention, described device 200 also includes low noise amplification unit 240,
The low noise amplification unit 240, for being carried out to N roads antenna array signals at low noise power amplification
Reason.
In one embodiment of the invention, described device 200 also includes amplifying unit 250,
The amplifying unit 250, for the signal all the way of the synthesis to be amplified into processing, after the enhanced processing
Signal be sent to the single channel tuner.
In one embodiment of the invention, described device 200 also includes demodulation process unit 280,
The demodulation process unit 280, for being exported using the relevant clock signal of the N groups to the single channel tuner
Signal all the way synchronize demodulation process, generate corresponding N roads array signal.
Become apparent from, explain for a specific example below in order that obtaining the solution of the present invention.Fig. 2 is the present invention
The concrete structure schematic diagram of a kind of array signal reception device of one embodiment, as shown in Fig. 2 described device includes N roads day
Linear array 301, N number of low-noise amplifier 302, N number of modulator 303, N roads combiner 304, amplifier module 305, single channel tuning
Device 306, analog-to-digital conversion module 309, N roads signal separation module 308, N roads signal processing module 307, embedded signal generation module
111 and relevant clock generating module 110.It should be noted that analog-to-digital conversion module 309, N roads signal separation module 308, N roads
Signal processing module 307 is equivalent to the demodulation process unit 280 in Fig. 1.
The reception of array signal simplifies technology as shown in Fig. 2 the signal of N roads array antenna 101 passes through N roads low-noise amplifier
After 102 amplifications, it is sent to N number of modulator 103 and is modulated, in modulated process, is generated by embedded signal generation module 111
N group orthogonal codes act on N number of modulator 103, while being synchronized by relevant clock generating module 110 to N roads array signal
Processing, generates the N roads orthogonal array signal of same frequency same-phase, and N roads same frequency same-phase orthogonal array signal is sent into N
Road combiner 304 is merged, and composite signal then is amplified into processing by amplifier module 105, then by single channel
Tuner 106 is filtered, amplified, convert analog signals into digital letter by analog-to-digital conversion module 109 again after frequency-conversion processing
Number, separated and handled finally by N roads signal separation module 308,307 pairs of data signals of N roads signal processing module,
Complete the demodulation of antenna array signals.N roads antenna array signals are converted into signal all the way by realization so that single-channel receiver is
N roads signal can be received, array signal reception system is simplified, has saved system resource, reduce system power dissipation, improve array
The direction finding precision of signal.
Aerial array 301：Antenna is structured the formation according to certain rule, has N roads antenna array to be designated as N roads aerial array；Antenna array
Row 101 include collinear array, end-fire array, Log Periodic Dipole Antenna array.The polarization mode of aerial array 101 can be level
Polarization, vertical polarization and ± 45 ° of polarization.
Low-noise amplifier 302 requires that uniformity is good, and input changes stable with output phase.Modulator 303 includes passive
Frequency mixer and speed-sensitive switch, frequency mixer require the transistor turns time in nanosecond rank, and speed-sensitive switch requires that switch speed is being received
Second rank.Low-noise amplifier 302：A kind of element for amplifying signal power, because its noise coefficient is very low, therefore puts for low noise
Big device, n-th low-noise amplifier is designated as low-noise amplifier N.The key technical indexes of low-noise amplifier has gain, noise
Coefficient, three rank section values of output；
Modulator 303 is that 0- π frequency mixers are referred mainly in a kind of hardware for being modulated signal, present case and are opened at a high speed
Close；
Combiner 304 is a kind of element that multichannel input signal is merged into signal output all the way, and leading indicator is insertion
Isolation between loss and port, the combiner of N roads input signal is designated as N roads combiner；
Amplifier module 305 is a kind of component for amplifying input signal, and the key technical indexes of component is gain, gain is put down
Smooth degree, three rank section values of output, component are mainly made up of elements such as amplifier, wave filters；
Single channel tuner 306 includes the functional structures such as mixing, amplification, filtering.Single channel tuner 306 is a kind of radio frequency
Receiving unit, only individual signals input port, after filtering, amplification, mixing etc. be converted to suitable intermediate-freuqncy signal after component
Export again.The key technical indexes of tuner has：Noise coefficient, three rank section values of input, gain, IF rejection ratio, image frequency resist
Refuse to compare, local oscillator reradiation；
Analog-to-digital conversion module 309 is used for the hardware for converting analog signals into data signal；
Signal separation module 308 is a kind of digital signal processing module, for the signal modulated after merging to be separated,
Core technology is multiple signals separation algorithm；
Signal processing module 307 is mainly used in the analysis and processing of radiofrequency signal；
The clock signal that the relevant clock generating module 110 is produced acts on each road array signal, and its clock frequency is not
Less than array signal way N and array signal frequency f product.Relevant clock generating module 110 is used to generate clock signal, should
Signal acts on modulation module and signal separation module simultaneously, it is desirable to same frequency same-phase.
Embedded signal generation module 111 is used to generate known data signal, such as generation N group orthogonal codes, and being poised for battle simultaneously
Column signal is modulated.
Antenna array signals, by taking 4G cell phone signal 2320MHz~2370MHz as an example, a width of 50MHz of one-channel signal band, battle array
Columns N=4.Low-noise amplifier 102 is no more than 2.5dB from noise coefficient, and working frequency covers 2.3GHz~2.4GHz, increases
Benefit is not less than 14dB device.
In one embodiment of the invention, modulator 303 selects passive double balanced mixer, and radiofrequency signal connects when using
Frequency mixer local oscillator port, the intermediate frequency port of frequency mixer connects modulated signal, the orthogonal code generated such as embedded signal generation module 311
Group signal, frequency mixer prevention at radio-frequency port is output modulated signal.
Combiner 304 closes 1.0 ° of phase differences, filter with low insertion loss, high port isolation combiners from 4, and such as Mini-circuit is public
Take charge of the WP4U+ of production.The amplifier module 105 is mainly used in the gain of the radiofrequency signal after Compensation Modulation, can select work frequency
Rate covers 2.3GHz~2.4GHz, and noise coefficient is less than 2.5dB, and gain is more than 14dB, and three rank section values of output are more than 30dBm's
The TQP3M9028 amplifiers of low-noise amplifier, such as TriQuint semiconductor companies production.
The single channel tuner 306 is the pith of the present embodiment, and its leading indicator is that noise coefficient is less than 12dB,
Gain is more than 20dB, and three rank section values of input are more than 5dBm, and output intermediate frequency is 500MHz, with a width of 50MHz.
The analog-to-digital conversion module 309 must be high-speed sampling AD, and sampling rate must meet anti-aliasing requirement.
The signal separation module 308 is digital signal processing module, is mainly made up of devices such as FPGA, DSP, ARM, is led to
The clock signal for crossing relevant clock generating module 110 is synchronous with modulated signal, and the clock signal frequency should be not less than 1.5GHz and enter
Row matching, is not interfere with each other with the signal for ensureing different passages, and can be precisely separating out, and this needs high performance hardware to go branch
Support.
The signal processing module 307 is mainly made up of devices such as FPGA, ARM, can be needed to carry out signal according to application
Demodulation, analysis.
The embedded signal generation module 311 is used to generate orthogonal code sets, and such as Walsh code characters are easy to point of follow-up signal
From.
It is the case study on implementation of the present invention above, number of channels is increased or decreased on the basis of the present invention, is deleted
Block diagram part-structure, such as leaves out aerial array 301, amplifier module 305, synthesizer 304, such as by signal separation module 308 and letter
Number processing module 307 merges into signal separation process module or demodulation process module.Change array signal working frequency, change
Signal bandwidth, changes signal intermediate frequency frequency etc. and all falls in the scope of protection of the present invention.
Embodiment two
Fig. 3 is a kind of flow chart of array signal method of reseptance of one embodiment of the invention, as shown in figure 3,
In step s 110, it is same using N groups orthogonal code and the relevant clock signal of N groups to the N roads antenna array signals of reception
Step carries out orthogonal modulation, generates the N roads orthogonal array signal of same frequency same-phase, N >=2；
In the step s 120, by the N roads orthogonal array signal synthesis signal, and will be described all the way of the same frequency same-phase
Signal is sent to single channel tuner all the way.
Pass through the method shown in Fig. 3, it is known that, technical scheme, to the N roads antenna array signals of reception, uses N
Group orthogonal code and the relevant clock signal synchronization of N groups carry out orthogonal modulation, generate the N roads orthogonal array signal of same frequency same-phase,
N >=2；By the N roads orthogonal array signal synthesis signal, and signal is transmitted all the way by described in all the way of the same frequency same-phase
To single channel tuner, N roads antenna array signals are converted into signal all the way by realization so that single-channel receiver can receive N
Road signal, simplifies array signal reception system, has saved system resource, reduce system power dissipation, improve array signal
Direction finding precision.The quantity of antenna array signals especially to be measured is more, and advantage is more obvious, is highly suitable for direction finding, scouting etc..
In one embodiment of the invention, in the N roads antenna array signals to reception, N groups orthogonal code and N group phases are used
Dry clock signal synchronization is carried out before orthogonal modulation, and methods described also includes：
Low noise power amplification processing is carried out to N roads antenna array signals.
In one embodiment of the invention, synthesized all the way by the N roads orthogonal array signal of the same frequency same-phase
After signal, before the signal all the way is sent into single channel tuner, methods described also includes：
The signal all the way of the synthesis is amplified processing, the signal after the enhanced processing is sent to the single-pass
Road tuner.
In one embodiment of the invention, method as shown in Figure 3 also includes：
The signal all the way exported using the relevant clock signal of the N groups to the single channel tuner is synchronized solution and mediated
Reason, generates corresponding N roads array signal.
It should be noted that the realization of each embodiment of the method for claimed receiving array signal is walked in the present embodiment
Suddenly corresponding identical with the course of work of the device shown in Fig. 1, identical part is repeated no more.
Embodiment three
Fig. 4 is the structural representation of another array signal reception device of one embodiment of the invention, as shown in figure 4,
Described device includes memory 410 and processor 420, and the memory 410 is stored with what can be performed by the processor 420
Computer program, the computer program can realize method and step as shown in Figure 3 when being performed by the processor 420.Need
It is noted that memory 410 and processor 420 are communicated by internal bus 430.
In various embodiments, memory 410 can be internal memory or nonvolatile memory.It is wherein non-volatile to deposit
Reservoir can be：Memory driver (such as hard disk drive), solid state hard disc, any kind of storage dish (such as CD, DVD),
Either similar storage medium or combinations thereof.Internal memory can be：RAM (RadomAccess Memory, arbitrary access
Memory), volatile memory, nonvolatile memory, flash memory.Further, nonvolatile memory and internal memory can as machine
Read storage medium.
It should be noted that in the present embodiment a kind of claimed course of work of array signal reception device 400 with
Each embodiment of method shown in Fig. 3 realize step correspondence it is identical, identical part is repeated no more.
In summary, technical scheme, by the N roads antenna array signals to reception, using N groups orthogonal code and
The relevant clock signal synchronization of N groups carries out orthogonal modulation, generates the N roads orthogonal array signal of same frequency same-phase, N >=2；Will
The N roads orthogonal array signal synthesis signal, and the signal all the way is sent to single channel tune all the way of the same frequency same-phase
N roads antenna array signals are converted into signal all the way by humorous device, realization so that single-channel receiver can receive N roads signal, are simplified
Array signal reception system, has saved system resource, has reduced system power dissipation, improve the direction finding precision of array signal.Especially
The quantity of its antenna array signals to be measured is more, and advantage is more obvious, is highly suitable for direction finding, scouting etc..
Presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.It is all in this hair
Any modification, equivalent substitution and improvements made within bright spirit and principle etc., are all contained in protection scope of the present invention.
Claims (9)
1. a kind of method of reseptance of array signal, it is characterised in that this method includes：
To the N roads antenna array signals of reception, orthogonal modulation is carried out using N groups orthogonal code and the relevant clock signal synchronization of N groups, it is raw
Into the N roads orthogonal array signal of same frequency same-phase, N >=2；
By the N roads orthogonal array signal synthesis signal, and the signal all the way is sent into list all the way of the same frequency same-phase
Channel tuner.
It is orthogonal using N groups 2. the method as described in claim 1, it is characterised in that in the N roads antenna array signals to reception
Code and N groups are concerned with before clock signal synchronization progress orthogonal modulation, and methods described also includes：
Low noise power amplification processing is carried out to N roads antenna array signals.
3. the method as described in claim 1, it is characterised in that by the N roads orthogonal array signal of the same frequency same-phase
Synthesis is all the way after signal, and before the signal all the way is sent into single channel tuner, methods described also includes：
The signal all the way of the synthesis is amplified processing, the signal after the enhanced processing is sent into the single channel adjusts
Humorous device.
4. the method as described in claim 1-3 any one, it is characterised in that methods described also includes：
The signal all the way exported using the relevant clock signal of the N groups to the single channel tuner synchronizes demodulation process,
Generate corresponding N roads array signal.
5. a kind of reception device of array signal, it is characterised in that the device includes：
Synchronized orthogonal modulating unit, for the N roads antenna array signals to reception, is believed using N groups orthogonal code and the relevant clock of N groups
Number synchronous N roads orthogonal array signal for carrying out orthogonal modulation, generating same frequency same-phase, N >=2；
Synthesis unit, for the N roads orthogonal array signal of the same frequency same-phase to be synthesized into signal all the way, and by described in all the way
Signal is sent to single channel tuner.
6. device as claimed in claim 5, it is characterised in that described device also includes low noise amplification unit,
The low noise amplification unit, for carrying out low noise power amplification processing to N roads antenna array signals.
7. device as claimed in claim 5, it is characterised in that described device also includes amplifying unit,
The amplifying unit, for the signal all the way of the synthesis to be amplified into processing, by the signal after the enhanced processing
It is sent to the single channel tuner.
8. the device as described in claim 5-7 any one, it is characterised in that described device also includes demodulation process unit,
The demodulation process unit, for being exported all the way to the single channel tuner using the relevant clock signal of the N groups
Signal synchronizes demodulation process, generates corresponding N roads array signal.
9. a kind of reception device of array signal, it is characterised in that described device includes memory and processor, the memory
Being stored with can be by the computer program of the computing device, and the computer program is by can be real during the computing device
Method and step described in existing claim 1-4 any one.
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| CN103490164A (en) * | 2013-10-07 | 2014-01-01 | 西安电子科技大学 | Single-channel array transmitting antenna based on two-phase code modulation |
| CN103779659A (en) * | 2014-01-24 | 2014-05-07 | 西安电子科技大学 | Single-channel array transmitting antenna based on frequency pre-coding |
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| CN201467162U (en) * | 2009-05-25 | 2010-05-12 | 刘洛琨 | Group Modulation/demodulation equipment for code domain reference Chirp ultra-wide band system based on active spectrum compression |
| CN103116170A (en) * | 2013-01-16 | 2013-05-22 | 武汉大学 | Indoor testing system of antenna array based interference rejection module of global navigation satellite system (GNSS) |
| CN103490164A (en) * | 2013-10-07 | 2014-01-01 | 西安电子科技大学 | Single-channel array transmitting antenna based on two-phase code modulation |
| CN103779659A (en) * | 2014-01-24 | 2014-05-07 | 西安电子科技大学 | Single-channel array transmitting antenna based on frequency pre-coding |
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