CN109889213A - A kind of method, apparatus and computer storage medium of channelizing - Google Patents
A kind of method, apparatus and computer storage medium of channelizing Download PDFInfo
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Abstract
The embodiment of the invention discloses a kind of method, apparatus of channelizing and computer storage mediums；This method may include: after carrying out all band sampling for shortwave frequency range, and sampled data is divided at least one channel group by the short-wave all-frequency band partition strategy based on setting；Based on the corresponding centre frequency of each channel group, frequency spectrum shift is carried out for the corresponding sampled data of each channel group, the data after being moved；Data after being moved using the decimation filter of the multi-stage cascade of setting to each channel group carry out filtering extraction to reduce sample frequency, obtain the corresponding filtering extraction data of each channel group；After carrying out multiphase filtering by the multiphase filtering strategy of setting for the corresponding filtering extraction data of each channel group, for the corresponding channelizing output data of each each channel group of channel group parallel output；The corresponding channelizing output data of each channel group is subjected to selection output according to the selection strategy of setting, obtains the corresponding effective channelizing output data of each channel group.
Description
Technical field
The present invention relates to wireless communication technique more particularly to the method, apparatus and computer storage medium of a kind of channelizing.
Background technique
In wireless communication technology field, the down-conversion technique of signal be receive signal from radio frequency to base band conversion processes in must
An indispensable technology.The down-converted of signal can carry out down-converted for one-channel signal, can also be directed to more
Road signal carries out down-converted；For both the above down-converted technology, carried out at down coversion for one-channel signal
Reason, process are relatively simple；And down-converted is carried out for multiple signals, process is relative complex.Particularly with short at present
For the quick frequency-selecting link setup system of wave, need to know whether short-wave all-frequency band has usable frequency in real time, therefore just need to shortwave
Full frequency band carries out real-time monitoring.Under such requirement, it is difficult to realize using the down-converted technology of one-channel signal；Cause
This, conventional scheme is the down coversion channelizing output that multiple signals are carried out using the method for multiphase filtering channelizing at present.At present
In conventional scheme, multiphase filtering channelizing processing directly usually is carried out to short-wave radio frequency signal, and the processing scheme is in reality
In engineer application, a large amount of filter is needed to be realized, therefore, multiphase filtering channelizing directly is carried out to short-wave radio frequency signal
The filter group of processing is difficult to realize in practical engineering applications.
Summary of the invention
In view of this, an embodiment of the present invention is intended to provide a kind of method, apparatus of channelizing and computer storage mediums；No
It only can reduce operand, overcome and directly carry out filtering caused by short-wave all-frequency band multiphase filtering channelizing in routine techniques
The problem of device design cannot achieve, and the sweep time of short-wave all-frequency band is shortened, improve the speed of shortwave frequency-selecting link setup.
The technical scheme of the present invention is realized as follows:
In a first aspect, the embodiment of the invention provides a kind of methods of channelizing, which comprises
After carrying out all band sampling for shortwave frequency range, the short-wave all-frequency band partition strategy based on setting draws sampled data
It is divided at least one channel group；
Based on the corresponding centre frequency of each channel group, frequency spectrum is carried out for the corresponding sampled data of each channel group and is removed
It moves, the data after being moved；
Data after being moved using the decimation filter of the multi-stage cascade of setting to each channel group carry out filtering extraction with
Sample frequency is reduced, the corresponding filtering extraction data of each channel group are obtained；
After carrying out multiphase filtering by the multiphase filtering strategy of setting for the corresponding filtering extraction data of each channel group,
For the corresponding channelizing output data of each each channel group of channel group parallel output；
The corresponding channelizing output data of each channel group is subjected to selection output according to the selection strategy of setting, is obtained every
The corresponding effective channelizing output data of a channel group.
Second aspect, the embodiment of the invention provides a kind of device of channelizing, described device includes: sampling section, master
Controller moves part, decimation filter, multiphase filter and selection output par, c；Wherein,
The sampling section is configured to after carrying out all band sampling for shortwave frequency range, the short-wave all-frequency band based on setting
Sampled data is divided at least one channel group by partition strategy；
The master controller, be configured to scanning residence time according to setting to each channel group in all channel groups according to
It is secondary to be scanned switching, and each channel group it is resident when triggering move part；
It is described to move part, it is configured to the corresponding centre frequency of each channel group, it is corresponding for each channel group
Sampled data carries out frequency spectrum shift, the data after being moved；
The decimation filter is configured to after being moved using the decimation filter of the multi-stage cascade of setting to each channel group
Data carry out filtering extraction to reduce sample frequency, obtain the corresponding filtering extraction data of each channel group；
The multiphase filter is configured to the multiphase filter for the corresponding filtering extraction data of each channel group by setting
After wave strategy carries out multiphase filtering, for the corresponding channelizing output data of each each channel group of channel group parallel output；
The selection output par, c is configured to the selection by the corresponding channelizing output data of each channel group according to setting
Strategy carries out selection output, obtains the corresponding effective channelizing output data of each channel group.
The third aspect, the embodiment of the invention provides a kind of computer storage mediums, which is characterized in that the computer is deposited
Storage media is stored with the program of channelizing, and first aspect institute is realized when the program of the channelizing is executed by least one processor
State the method and step of channelizing.
The embodiment of the invention provides a kind of method, apparatus of channelizing and computer storage mediums；Firstly, for carrying out
The data source of channelizing processing is in all band sampling to shortwave frequency range, so that it is adapted to the thought of software radio architecture,
Compared with traditional shortwave intermediate-frequency receiver, analog circuit is less, and the degree of software implementation is higher, and update is easier, and is applicable in
Property it is stronger, overcome and the AFE(analog front end) of shortwave intermediate-frequency receiver designed in routine techniques difficult, upgrading updates difficult problem；Its
It is secondary, filtering extraction is carried out by the absolute filter of multi-stage cascade, sample rate is greatly reduced, so that it is more to reduce subsequent progress
When mutually filtering, for the requirement that FIR filter designs, overcomes and directly carry out short-wave all-frequency band multiphase filtering letter in routine techniques
The problem of design of filter caused by road cannot achieve, so that the technical solution of the embodiment of the present invention more meets engineering practice
It needs, more realistic solves the problems, such as short-wave all-frequency band channelizing output；It then, can by multiphase filtering channelizing
Parallel output multiphase data increase channelizing number compared with traditional short-wave receiver, to reduce to shortwave full range
Time needed for section run-down, it is more advantageous to the quick frequency-selecting link setup of shortwave, overcomes in routine techniques and short-wave all-frequency band is swept
The slow problem of speed of detection is retouched, the technical solution of the embodiment of the present invention is allowed quickly to scan short-wave all-frequency band, to improve
The speed of shortwave frequency-selecting link setup.
Detailed description of the invention
Fig. 1 is a kind of method flow schematic diagram of channelizing provided in an embodiment of the present invention；
Fig. 2 is a kind of channelization structure schematic diagram of 512 phase filtering provided in an embodiment of the present invention；
Fig. 3 is a kind of simulated effect schematic diagram provided in an embodiment of the present invention；
Fig. 4 is a kind of device composition schematic diagram of channelizing provided in an embodiment of the present invention；
Fig. 5 is the device composition schematic diagram of another channelizing provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
Referring to Fig. 1, it illustrates a kind of methods of channelizing provided in an embodiment of the present invention, and this method can be applied to short
Receiving end in wave wireless communication system, this method may include:
S101: after carrying out all band sampling for shortwave frequency range, the short-wave all-frequency band partition strategy based on setting will be sampled
Data are divided at least one channel group；
S102: being based on the corresponding centre frequency of each channel group, carries out frequency for the corresponding sampled data of each channel group
Spectrum is moved, the data after being moved；
S103: the data after being moved using the decimation filter of the multi-stage cascade of setting to each channel group carry out extraction filter
Wave obtains the corresponding filtering extraction data of each channel group to reduce sample frequency；
S104: multiphase filter is carried out by the multiphase filtering strategy of setting for each channel group corresponding filtering extraction data
After wave, for the corresponding channelizing output data of each each channel group of channel group parallel output；
S105: carrying out selection output according to the selection strategy of setting for the corresponding channelizing output data of each channel group,
Obtain the corresponding effective channelizing output data of each channel group.
For technical solution shown in FIG. 1, all band sampling carried out to shortwave frequency range described in S101, and usually shortwave frequency range
For 1.5MHz-30MHz, it is based on nyquist sampling theorem, it is in embodiments of the present invention, described to carry out all-wave for shortwave frequency range
Section sampling, comprising:
It is 73.728MHz according to sample frequency, is converted by analog/digital (A/D, Analog to Digital) direct
All band sampling is carried out to shortwave frequency range, obtains sampled data.
It is to be appreciated that meeting the thought of software radio architecture, with biography due to carrying out direct digitization to analog signal
The shortwave intermediate-frequency receiver of system is compared, and analog circuit is less, and the degree of software implementation is higher, and update is easier, and applicability is more
By force, it overcomes and designs difficult, the difficult problem of upgrading update in routine techniques for the AFE(analog front end) of shortwave intermediate-frequency receiver；
For technical solution shown in FIG. 1, in one possible implementation, the short-wave all-frequency band based on setting is divided
Sampled data is divided at least one channel group by strategy, comprising:
From low to high according to shortwave frequency range, sampled data is in turn divided into 27 letters according to being divided into 1.08MHz between frequency range
Road group.
The embodiment of the present invention is during specific implementation, according to being divided into sampling of the 1.08MHz by short-wave all-frequency band between frequency range
After data divide, available 27 channel groups, the corresponding frequency range of these channel groups is followed successively by 1.60MHz- from low to high
2.68MHz、2.68MHz-3.76MHz、3.76MHz-4.84MHz、4.84MHz-5.92MHz、5.92MHz-7.00MHz、
7.00MHz-8.08MHz、8.08MHz-9.16MHz、9.16MHz-10.24MHz、10.24MHz-11.32MHz、11.32MHz-
12.40MHz、12.40MHz-13.48MHz、13.48MHz-14.56MHz、14.56MHz-15.64MHz、15.64MHz-
16.72MHz、16.72MHz-17.80MHz、17.80MHz-18.88MHz、18.88MHz-19.96MHz、19.96MHz-
21.04MHz、21.04MHz-22.12MHz、22.12MHz-23.20MHz、23.20MHz-24.28MHz、24.28MHz-
25.36MHz、25.36MHz-26.44MHz、26.44MHz-27.52MHz、27.52MHz-28.60MHz、28.60MHz-
29.68MHz and 29.68MHz-30.00MHz.After channel group divides, subsequent place can be carried out for each channel group
Reason, in specific implementation, can be numbered the above channel group, and specific number is channel group 0, channel group 1, channel group
2 ..., channel group 26；Then, master controller can pass through multichannel buffer serial port (McBSP, Multichannel
Buffered Serial Port) agreement is successively scanned switching to above-mentioned 27 channel groups, to realize shortwave frequency range
All band scanning.It is 100 milliseconds of ms in the scanning residence time of each channel group, completes entire shortwave frequency range institute to scan
Take time is 2.7 seconds.
Based on above-mentioned implementation, it is preferable that it is described to be based on the corresponding centre frequency of each channel group, for each channel
The corresponding sampled data of group carries out frequency spectrum shift, the data after being moved, comprising:
For obtained 27 channel groups of division, successively according to 2.14MHz, 3.22MHz, 4.3MHz, 5.38MHz,
6.46MHz, 7.54MHz, 8.62MHz, 9.7MHz, 10.78MHz, 11.86MHz, 12.94MHz, 14.02MHz, 15.1MHz,
16.18MHz, 17.26MHz, 18.34MHz, 19.42MHz, 20.5MHz, 21.58MHz, 22.66MHz, 23.74MHz,
The frequency of 24.82MHz, 25.9MHz, 26.98MHz, 28.06MHz, 29.14MHz, 30.22MHz are by the hits of each channel group
According to moving base band.
For example, when master controller switches to the 11st channel group, i.e. signal group 10, the frequency range of the channel group is
Therefore the set of frequency moved is 12.94MHz, to be capable of the frequency of channel group 10 by 12.40MHz-13.48MHz
Spectrum is moved in the base band that centre frequency is 0Hz.
For technical solution shown in FIG. 1, in one possible implementation, the decimation filter using setting
Data after moving to each channel group carry out filtering extraction to reduce sample frequency, obtain the corresponding extraction filter of each channel group
Wave number evidence may include:
Using multistage cascaded integrator-comb (CIC, Cascade Integrator Comb) filter to each channel group
Data after moving carry out filtering extraction, obtain the corresponding preliminary filtering extraction data of each channel group；
Using multistage half band (HB, Half-band) filter preliminary filtering extraction data corresponding to each channel group into
Row filtering extraction obtains the corresponding filtering extraction data of each channel group.
It should be noted that after passing through frequency spectrum shift process described in S102 for each channel group, it is necessary to right
Each channel group carries out channelizing output, since sample frequency at this time is still higher, is if directly carrying out channel width
The channelizing of 3KHz filters, and filter is difficult to realize, and therefore, the embodiment of the present invention is dropped using the cascade structure of multiple filter
Low sample frequency.
Preferably due to which cic filter does not have multiplying, only add operation, so the embodiment of the present invention will be multistage
Cic filter is as the higher first order filter of sample rate；At the same time, also little using the calculation amount of cic filter,
In the case where considering stopband attenuation and intermediate zone ripple, the embodiment of the present invention uses 3 rank cic filters to realize to each channel
Data after group is moved carry out 6 times of filtering extraction, to obtain the corresponding preliminary filtering extraction data transmission of each channel group
Multistage HB filter to next stage carries out further filtering extraction.Specifically, 6 are realized using 3 rank cic filter structures
After extraction again, sample frequency can be reduced to 12.288MHz from the 73.728MHz described in S101.
Then, the multiplication quantity as needed for HB filter is the half of the FIR filter of same filter coefficient,
The embodiment of the present invention is using multistage cic filter as the second level filter after sample rate decline.In embodiments of the present invention, together
Sample is designed as the filtering extraction that cascade 3 rank HB filter carries out 8 times to the preliminary extraction data that cic filter exports, every rank
HB filter corresponding transmission coefficient tw=0.28, stopband attenuation ast=60dB.It is so 12.288MHz for sample frequency
Preliminary extraction data for, sample frequency becomes 6.144MHz after first HB filter, then successively by identical
Two HB filters after, sample frequency can be reduced to 1.536MHz from 6.144MHz, the filter of obtained extraction at this time
Wave number evidence has just been appropriate for multiphase filtering channelizing and has handled.
It is to be appreciated that having limit for length's unit impulse response (FIR, Finite Impulse Response) filter with traditional
Wave device is compared, and since cic filter does not need multiplier, multiplication quantity needed for HB filter is the FIR of same filter coefficient
The half of filter, therefore, the absolute filter of the multi-stage cascade illustrated using the embodiment of the present invention can substantially reduce fortune
Calculation amount.Overcome directly carried out in routine techniques filter present in short-wave all-frequency band multiphase filtering channelizing design can not be real
Existing problem, so that the technical solution of the embodiment of the present invention more meets engineering practice needs, more realistic solves shortwave
The problem of full frequency band channelizing exports.
For above-mentioned technical proposal, after obtaining the corresponding filtering extraction data of each channel group, it is necessary to start into
The processing of row multiphase filtering channelizing, in one possible implementation, for being directed to each channel group pair described in S104
It is every for each channel group parallel output after the filtering extraction data answered carry out multiphase filtering by the multiphase filtering strategy of setting
The corresponding channelizing output data of a channel group may include:
It according to channel width is 3KHz for the corresponding filtering extraction data of each channel group, 512 phases carry out parallel letter
Roadization output, obtains the corresponding 512 road multiphase filtering channelizing output data of each channel group.
For above-mentioned implementation, since the sample frequency of the filtering extraction data of aforementioned HB filter output is reduced to
1.536MHz, and the desired channel width exported of multiphase filtering channelizing processing is 3KHz, it is therefore desirable to carry out 512 phases
Channelizing output, preferably use FIR filter at this time, which is 3KHz, for convenience of 512 multiphases
Total order of the division of filter, FIR filter is set as 5120, therefore, in 512 multiphase filters, each multiphase filtering
The order of device is 10 ranks.Referring to fig. 2, for the filtering extraction data s (n) of HB filter output, delay is first passed around
Processing, exports 512 parallel datas, the delay of each data is respectively 0 clock cycle, 1 clock cycle, 2 clocks
Period ..., 511 clock cycle；Then, 512 parallel datas of delay output are carried out with 512 times of extraction respectively, then
Successively multiplied by (- 1)m, wherein m indicates to extract later m-th point, and obtained 512 parallel datas pass through 512 respectively at this time
A multiphase filter, the multiphase filter are preferably the heterogeneous structure that order is 5120 FIR filter, are filtered later
512 circuit-switched datas, then multiply respectivelyWherein D is equal to 512；Then, it will obtain
After 512 channel parallel datas carry out 512 points of parallel FFT (FFT, Fast Fourier Transformation)
The processing of multiphase filtering channelizing described in S104 is completed, the 512 groups of parallel datas obtained at this time are by 1.536MHz band
Width carries out the signal of 3KHz channelizing output, it should be noted that is complex signal handled by above-mentioned filter construction, therefore defeated
The channelized data of the 3KHz on 512 tunnel Chu is also complex signal.For example, for the 0th channel group, channel is divided into 1.60MHz-
2.68MHz, channel width 1.08MHz, i.e., the channel of 360 3KHz.According to the centre frequency of the above frequency spectrum shift setting and
The multiphase filter structure of cascading filter structure and 512 phases, it is found that multiphase filtering output channel width be
1.372MHz-2.908MHz, i.e. bandwidth are 1.536MHz.Relative to required 360 road valid data, 512 circuit-switched datas only have
360 tunnels (- 436 tunnel of the 77 tunnel) data at middle part are effective.
Based on this, preferably for, it is described by the corresponding channelizing output data of each channel group according to the selection plan of setting
Selection output is slightly carried out, the corresponding effective channelizing output data of each channel group is obtained, comprising:
It is selected for the corresponding 512 road multiphase filtering channelizing output data of each channel group, by 512 number
According to 360 circuit-switched datas at middle part as the corresponding effective channelizing output data of each channel group.
For example, for the 0th channel group, frequency 1.60MHz-2.68MHz, 512 phase multiphase filtering channelizings are defeated
Data out, i.e., 512 point FFT output datas, corresponding relationship are as follows: 1.60MHz-1.603MHz is that the corresponding 512 point FFT in the 0th tunnel are defeated
Out the 436th point, 1.603MHz-1.606MHz is the 435th point of the corresponding 512 point FFT output in the 1st tunnel, and so on,
2.677MHz-2.68MHz is the 77th point of the corresponding 512 point FFT output in the 359th tunnel.So as to which multiphase filtering channelizing is defeated
360 circuit-switched datas on (- 436 tunnel of 77 tunnel) are as the corresponding effective channelizing output of the 0th channel group in the middle part of 512 circuit-switched datas out
Data
For above-mentioned technical proposal, firstly, the data source for carrying out channelizing processing is in the all-wave to shortwave frequency range
Section sampling, to be adapted to the thought of software radio architecture, compared with traditional shortwave intermediate-frequency receiver, analog circuit is more
Few, the degree of software implementation is higher, and update is easier, and applicability is stronger, overcomes in routine techniques and shortwave intermediate frequency is connect
It is difficult that the AFE(analog front end) of receipts machine designs, and upgrading updates difficult problem；Secondly, the absolute filter by multi-stage cascade carries out extraction filter
Wave greatly reduces sample rate, to, for the requirement that FIR filter designs, overcome when reducing subsequent progress multiphase filtering
The problem of design of filter caused by short-wave all-frequency band multiphase filtering channelizing cannot achieve directly is carried out in routine techniques,
So that the technical solution of the embodiment of the present invention more meets engineering practice needs, more realistic solves short-wave all-frequency band channel
The problem of changing output；Then, by multiphase filtering channelizing can parallel output multiphase data, with traditional short-wave receiver phase
Than increasing channelizing number, to reduce to the time needed for short-wave all-frequency band run-down, it is quick being more advantageous to shortwave
Frequency-selecting link setup overcomes in routine techniques to the slow-footed problem of short-wave all-frequency band scanning probe, so that the embodiment of the present invention
Technical solution can quickly scan short-wave all-frequency band, to improve the speed of shortwave frequency-selecting link setup.
Scheme in view of the above technology, the embodiment of the present invention is by specific simulated environment to the technical of above-mentioned technical proposal
Energy and effect are further elaborated.Specific simulated conditions are as follows:
1.603MHz, i.e. short-wave radio frequency are set as using the synchronization preamble sequence in short wave communication as signal, carrier wave is sent
Frequency range.Channelizing output is carried out to the radiofrequency signal using the technical solution of previous embodiment, using synchronization preamble sequence from
Correlation properties do auto-correlation to channelizing output signal, observe whether the channel contains synchronization preamble sequence.
It is as follows that simulation result is carried out for above-mentioned simulated conditions and parameter:
Channelizing output is carried out to the radio frequency sampling signal of input according to the technical solution of previous embodiment, to 512 point FFT
435th point data stream of output does auto-correlation computation, shown in Figure 3, and abscissa indicates autocorrelative points, and ordinate indicates
Autocorrelative peak value, by Fig. 3 it is apparent that autocorrelation peak, the autocorrelation peak indicate the 435th tunnel output data
Containing synchronization preamble sequence, the 435th point FFT exports the 1st tunnel of corresponding 360 path channelsization selection output, illustrates aforementioned implementation
The technical solution of example can be good at carrying out channelizing output to short-wave radio frequency signal.
Based on the identical inventive concept of previous embodiment, referring to fig. 4, it illustrates a kind of letters provided in an embodiment of the present invention
The device 40 in road, described device 40 include: sampling section 401, master controller 402, move part 403, decimation filter
404, multiphase filter 405 and selection output par, c 406；Wherein,
The sampling section 401 is configured to after carrying out all band sampling for shortwave frequency range, the shortwave full range based on setting
Sampled data is divided at least one channel group by section partition strategy；
The master controller 402 is configured to the scanning residence time according to setting to each channel in all channel groups
Group is successively scanned switching, and each channel group it is resident when trigger and move part 403；
It is described to move part 403, it is configured to the corresponding centre frequency of each channel group, it is corresponding for each channel group
Sampled data carry out frequency spectrum shift, the data after being moved；
The decimation filter 404 is configured to the decimation filter 404 using the multi-stage cascade of setting to each channel group
Data after moving carry out filtering extraction to reduce sample frequency, obtain the corresponding filtering extraction data of each channel group；
The multiphase filter 405 is configured to pass through the more of setting for the corresponding filtering extraction data of each channel group
After phase filtering strategies carry out multiphase filtering, number is exported for the corresponding channelizing of each each channel group of channel group parallel output
According to；
The selection output par, c 406 is configured to the corresponding channelizing output data of each channel group according to setting
Selection strategy carries out selection output, obtains the corresponding effective channelizing output data of each channel group
In the above scheme, the sampling section 401, is configured that
It is 73.728MHz according to sample frequency, all band is directly carried out to shortwave frequency range by analog/digital A/D conversion
Sampling obtains sampled data.
In the above scheme, the sampling section 401, is configured that
From low to high according to shortwave frequency range, sampled data is in turn divided into 27 letters according to being divided into 1.08MHz between frequency range
Road group.
In the above scheme, described to move part 403, it is configured that
For obtained 27 channel groups of division, successively according to 2.14MHz, 3.22MHz, 4.3MHz, 5.38MHz,
6.46MHz, 7.54MHz, 8.62MHz, 9.7MHz, 10.78MHz, 11.86MHz, 12.94MHz, 14.02MHz, 15.1MHz,
16.18MHz, 17.26MHz, 18.34MHz, 19.42MHz, 20.5MHz, 21.58MHz, 22.66MHz, 23.74MHz,
The frequency of 24.82MHz, 25.9MHz, 26.98MHz, 28.06MHz, 29.14MHz, 30.22MHz are by the hits of each channel group
According to moving base band.
In the above scheme, referring to Fig. 5, the decimation filter 404 includes: multistage cic filter 4041 and multistage HB
Filter；Wherein, the multistage cic filter 4041 is configured to the data after moving to each channel group and carries out filtering extraction,
Obtain the corresponding preliminary filtering extraction data of each channel group；
The multistage HB filter 4042 is configured to preliminary filtering extraction data corresponding to each channel group and extracts
Filtering, obtains the corresponding filtering extraction data of each channel group.
In the above scheme, the multistage cic filter 4041, concrete configuration are as follows:
Data after being moved using 3 rank cic filters to each channel group carry out 6 times of filtering extraction, obtain each letter
The corresponding preliminary filtering extraction data of road group；
Correspondingly, the multistage HB filter 4042, concrete configuration are as follows: using cascade 3 rank HB filter to the CIC
The preliminary extraction data of filter output carry out 8 times of filtering extraction, obtain the corresponding filtering extraction data of each channel group；Its
In, every rank HB filter corresponding transmission coefficient tw=0.28, stopband attenuation ast=60dB.
In the above scheme, the multiphase filter 405, is configured that
It according to channel width is 3KHz for the corresponding filtering extraction data of each channel group, 512 phases carry out parallel letter
Roadization output, obtains the corresponding 512 road multiphase filtering channelizing output data of each channel group.
In the above scheme, the selection output par, c 406, is configured that
It is selected for the corresponding 512 road multiphase filtering channelizing output data of each channel group, by 512 number
According to 360 circuit-switched datas at middle part as the corresponding effective channelizing output data of each channel group.
It is to be appreciated that in the present embodiment, " part " can be partial circuit, segment processor, subprogram or soft
Part etc., naturally it is also possible to be unit, can also be that module is also possible to non-modularization.
In addition, each component part in the present embodiment can integrate in one processing unit, it is also possible to each list
Member physically exists alone, and can also be integrated in one unit with two or more units.Above-mentioned integrated unit both can be with
Using formal implementation of hardware, can also be realized in the form of software function module.
If the integrated unit realizes that being not intended as independent product is sold in the form of software function module
Or in use, can store in a computer readable storage medium, based on this understanding, the technical side of the present embodiment
Substantially all or part of the part that contributes to existing technology or the technical solution can be produced case in other words with software
The form of product embodies, which is stored in a storage medium, including some instructions are used so that one
Platform computer equipment (can be personal computer, server or the network equipment etc.) or processor (processor) execute sheet
The all or part of the steps of embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory
(ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk
Etc. the various media that can store program code.
Therefore, a kind of computer storage medium is present embodiments provided, the computer storage medium is stored with channelizing
Program, the side of channelizing described in above-mentioned technical proposal is realized when the program of the channelizing is executed by least one processor
Method step.
It should be understood that between technical solution documented by the embodiment of the present invention, in the absence of conflict, Ke Yiren
Meaning combination.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of method of channelizing, which is characterized in that the described method includes:
After carrying out all band sampling for shortwave frequency range, sampled data is divided by the short-wave all-frequency band partition strategy based on setting
At least one channel group；
Based on the corresponding centre frequency of each channel group, frequency spectrum shift is carried out for the corresponding sampled data of each channel group, is obtained
Data after must moving；
Data after being moved using the decimation filter of the multi-stage cascade of setting to each channel group carry out filtering extraction to reduce
Sample frequency obtains the corresponding filtering extraction data of each channel group；
After carrying out multiphase filtering by the multiphase filtering strategy of setting for the corresponding filtering extraction data of each channel group, for
The corresponding channelizing output data of each each channel group of channel group parallel output；
The corresponding channelizing output data of each channel group is subjected to selection output according to the selection strategy of setting, obtains each letter
The corresponding effective channelizing output data of road group.
2. the method according to claim 1, wherein described carry out all band sampling for shortwave frequency range, comprising:
It is 73.728MHz according to sample frequency, all band sampling is directly carried out to shortwave frequency range by analog/digital A/D conversion,
Obtain sampled data.
3. the method according to claim 1, wherein the short-wave all-frequency band partition strategy based on setting will be adopted
Sample data are divided at least one channel group, comprising:
From low to high according to shortwave frequency range, sampled data is in turn divided into 27 channel groups according to being divided into 1.08MHz between frequency range.
4. according to the method described in claim 3, it is characterized in that, described be based on the corresponding centre frequency of each channel group, needle
Frequency spectrum shift is carried out to the corresponding sampled data of each channel group, the data after being moved, comprising:
For obtained 27 channel groups of division, successively according to 2.14MHz, 3.22MHz, 4.3MHz, 5.38MHz, 6.46MHz,
7.54MHz, 8.62MHz, 9.7MHz, 10.78MHz, 11.86MHz, 12.94MHz, 14.02MHz, 15.1MHz, 16.18MHz,
17.26MHz, 18.34MHz, 19.42MHz, 20.5MHz, 21.58MHz, 22.66MHz, 23.74MHz, 24.82MHz,
The sampled data of each channel group is moved base by the frequency of 25.9MHz, 26.98MHz, 28.06MHz, 29.14MHz, 30.22MHz
Band.
5. the method according to claim 1, wherein the decimation filter using setting is to each channel group
Data after moving carry out filtering extraction to reduce sample frequency, obtain the corresponding filtering extraction data of each channel group, comprising:
Data after being moved using multistage cascaded integrator-comb cic filter to each channel group carry out filtering extraction, obtain
The corresponding preliminary filtering extraction data of each channel group；
Filtering extraction is carried out using multistage half band HB filter preliminary filtering extraction data corresponding to each channel group, is obtained every
The corresponding filtering extraction data of a channel group.
6. according to the method described in claim 5, it is characterized in that, described utilize multistage cascaded integrator-comb cic filter
Data after moving to each channel group carry out filtering extraction, obtain the corresponding preliminary filtering extraction data of each channel group, wrap
It includes:
Data after being moved using 3 rank cic filters to each channel group carry out 6 times of filtering extraction, obtain each channel group
Corresponding preliminary filtering extraction data；
Correspondingly, described to be extracted using multistage half band HB filter preliminary filtering extraction data corresponding to each channel group
Filtering, obtains the corresponding filtering extraction data of each channel group, comprising:
Using cascade 3 rank HB filter the preliminary extraction data that the cic filter exports are carried out with 8 times of filtering extraction,
Obtain the corresponding filtering extraction data of each channel group；Wherein, the corresponding transmission coefficient tw=0.28 of every rank HB filter, stopband
Decay ast=60dB.
7. the method according to claim 1, wherein described be directed to the corresponding filtering extraction data of each channel group
After carrying out multiphase filtering by the multiphase filtering strategy of setting, for the corresponding letter of each each channel group of channel group parallel output
Road output data, comprising:
It according to channel width is 3KHz for the corresponding filtering extraction data of each channel group, 512 phases carry out parallel channelizing
Output, obtains the corresponding 512 road multiphase filtering channelizing output data of each channel group.
8. the method according to the description of claim 7 is characterized in that described by the corresponding channelizing output data of each channel group
Selection output is carried out according to the selection strategy of setting, obtains the corresponding effective channelizing output data of each channel group, comprising:
It is selected for the corresponding 512 road multiphase filtering channelizing output data of each channel group, it will be in 512 circuit-switched data
360 circuit-switched datas in portion are as the corresponding effective channelizing output data of each channel group.
9. a kind of device of channelizing, which is characterized in that described device includes: sampling section, master controller, moves part, takes out
Take filter, multiphase filter and selection output par, c；Wherein,
The sampling section is configured to after carrying out all band sampling for shortwave frequency range, and the short-wave all-frequency band based on setting divides
Sampled data is divided at least one channel group by strategy；
The master controller, be configured to scanning residence time according to setting to each channel group in all channel groups successively into
Row scanning switching, and each channel group it is resident when triggering move part；
It is described to move part, it is configured to the corresponding centre frequency of each channel group, for the corresponding sampling of each channel group
Data carry out frequency spectrum shift, the data after being moved；
The decimation filter is configured to the number after moving using the decimation filter of the multi-stage cascade of setting to each channel group
According to filtering extraction is carried out to reduce sample frequency, the corresponding filtering extraction data of each channel group are obtained；
The multiphase filter is configured to the multiphase filtering plan for the corresponding filtering extraction data of each channel group by setting
After slightly carrying out multiphase filtering, for the corresponding channelizing output data of each each channel group of channel group parallel output；
The selection output par, c is configured to the selection strategy by the corresponding channelizing output data of each channel group according to setting
Selection output is carried out, the corresponding effective channelizing output data of each channel group is obtained.
10. a kind of computer storage medium, which is characterized in that the computer storage medium is stored with the program of channelizing, institute
The method for realizing channelizing described in any one of claims 1 to 8 when stating the program of channelizing by the execution of at least one processor
Step.
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