CN110444228A - A kind of short-wave reception method and system - Google Patents
A kind of short-wave reception method and system Download PDFInfo
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- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
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Abstract
The invention discloses a kind of short-wave reception method and system, method include: receive multichannel branch line short-wave signal, based on short-time energy variance select all the way branch line short-wave signal be benchmark signal；Branch line short-wave signal is handled based on P.563 standard, obtains signal characteristic set, assigns branch line short-wave signal corresponding weight；Branch line short-wave signal to be combined is determined based on the characteristic similarity of non-referenced signal and reference signal；Based on branch line short-wave signal and corresponding weight to be combined, calculates and obtain Integrated Receiver signal.System is for executing method.The present invention is based on short-time energy variance, it can select to transmit stable branch line short-wave signal as reference signal；Branch line short-wave signal is handled based on P.563 standard, obtains the signal characteristic set of high quality；Branch line short-wave signal is determined based on characteristic similarity, and branch line short-wave signal can be selected using the basis as calculating；Calculate obtain Integrated Receiver signal, can reasonable computation receive signal, reduce error.
Description
Technical field
The present invention relates to signal of communication process field, especially a kind of short-wave reception method and system.
Background technique
Shortwave advantage in remote voice communications is prominent, and with mobility strong, erection is convenient, survivability is strong and network reconfiguration
The features such as quick, is widely used in the fields such as military, ocean and the disaster relief.
In Shortwave Communication System, because of the quick variation in ionosphere, there are also the influence of multipath effect, the reception of receiving end is believed
Number the continuous fluctuations of level, cause signal fadeout phenomenon.Diversity reception can effectively fight this channel fading.Such as
Fruit transmitting terminal sends signal all the way, and the propagation path of signal can there are many situations, then can receive in receiving end same
The lesser copies of information of multiple uncorrelated or correlation of one signal, and signal strength is suitable, these signals can not be met simultaneously
To deep fade, then merge in the diversity that receiving end carries out signal, then it can influence to avoid deep fade to single-pathway signal.
The method of diversity can be divided according to the mode merged in receiving end, can be divided into: selection diversity merge (SDC), etc. gains point
Collection merges (EGC), maximum value diversity merges (MRC).
Selection diversity merging refers to the signal for detecting all diversity branches, to select wherein that highest branch of signal-to-noise ratio
Output of the road signal as combiner, this method is simple, it is easy to realize, but since non-selected tributary signal abandons, anti-ageing
It is poor to fall effect；Equal-gain diversity combining is without being weighted signal, and the signal of each branch is that gains is waited to be added, and this method is realized
Fairly simple, performance is close to Maximal ratio combiner；Maximal ratio combiner is a kind of best merging mode, it is to multiple signals
Merge with mutually weighting, weight is to be determined by the corresponding signal power of each tributary signal in the ratio of noise power, most
It is big to be equal to the sum of each road SNR than combined output SNR, even if when each road signal is all very poor so that signal can be with coverlet all the way
When solely demodulating, maximum-ratio combing is it is possible to synthesize the signal being demodulated required up to SNR.
Maximum-ratio combing is to carry out to multiple signals by optimal proportion addition or ratio summed square, and coefficient depends on noise
Than.Signal-to-noise ratio is bigger, bigger to the contribution after merging, and signal-to-noise ratio is smaller, and the contribution after merging is smaller.When weighting coefficient selects
Where appropriate, available maximum signal-to-noise ratio output.But in practical applications, more due to the complexity of short wave communication channel
The interference of diameter time delay is very serious, and not only complexity is high but also precision is very low for signal-to-noise ratio (SNR) estimation, and tradition is in Gaussian white noise channel
Signal-noise ratio estimation method calculates error and is often ± 4dB or so if carrying out signal-to-noise ratio (SNR) estimation in short wave communication channel,
The error causes noise Ratio Weighted that cannot play the role of good weighted gain in Maximal ratio combiner.
Summary of the invention
The embodiment of the present invention is intended to solve at least some of the technical problems in related technologies.For this purpose, this
One purpose of inventive embodiments is to provide a kind of short-wave reception method and system.
The technical scheme adopted by the invention is that:
In a first aspect, the embodiment of the present invention provides a kind of short-wave reception method, comprising: multichannel branch line short-wave signal is received,
Based on short-time energy variance select all the way branch line short-wave signal be benchmark signal；Based on the P.563 standard processing branch line shortwave
Signal obtains signal characteristic set, assigns the branch line short-wave signal corresponding weight；Based on non-referenced signal and the benchmark
The characteristic similarity of signal determines branch line short-wave signal to be combined；Based on the branch line short-wave signal to be combined and corresponding
Weight calculates and obtains Integrated Receiver signal.
Preferably, obtaining short-time energy variance includes: to divide one section of short-wave signal as several subframes, calculates single subframe
The average energy value and corresponding energy variance sequence of energy value, subframe, marking the energy variance sequence is short-time average energy
Variance；It is corresponding, according to the dispersion of the energy variance sequence select all the way branch line short-wave signal be benchmark signal.
Preferably, described to be based on P.563 standard to handle the branch line short-wave signal including: to select from the P.563 standard
Several distortion characteristic parameter is selected, handles the branch line short-wave signal to obtain the corresponding higher order statistical of the distortion characteristic parameter
Feature vector, marking the higher order statistical theory vector of reference signal is benchmark feature set, and other higher order statistical theory vectors are
Non-referenced feature set.
Preferably, the corresponding weight of the branch line short-wave signal that assigns includes: according to reference signal and other branch lines
The signal-to-noise ratio of short-wave signal assigns other described corresponding weights of branch line short-wave signal.
Preferably, the characteristic similarity based on non-referenced signal and the reference signal determines that branch line to be combined is short
Wave signal includes: the score value that the characteristic similarity of the non-referenced signal and the reference signal is calculated based on Euclidean distance,
Branch line short-wave signal to be combined is determined from the branch line short-wave signal according to preset selection criteria and the score value.
Second aspect, the embodiment of the present invention provide a kind of short-wave reception system, comprising: receiving unit, for receiving multichannel
Branch line short-wave signal, based on short-time energy variance select all the way branch line short-wave signal be benchmark signal；Characteristic processing unit, is used for
Based on the P.563 standard processing branch line short-wave signal, signal characteristic set is obtained, it is corresponding to assign the branch line short-wave signal
Weight；Signal behavior unit, for determining branch to be combined based on the characteristic similarity of non-referenced signal and the reference signal
Line short-wave signal；Signal combining unit, for calculating and obtaining based on the branch line short-wave signal and corresponding weight to be combined
Integrated Receiver signal.
Preferably, obtaining short-time energy variance includes: to divide one section of short-wave signal as several subframes, calculates single subframe
The average energy value and corresponding energy variance sequence of energy value, subframe, marking the energy variance sequence is short-time average energy
Variance；The receiving unit, according to the dispersion of the energy variance sequence select all the way branch line short-wave signal be benchmark signal.
Preferably, characteristic processing unit is handled for selecting several distortion characteristic parameter from the P.563 standard
The branch line short-wave signal marks the height of reference signal to obtain the corresponding higher order statistical theory vector of the distortion characteristic parameter
Rank statistical nature vector is benchmark feature set, and other higher order statistical theory vectors are non-referenced feature set.
Preferably, the corresponding weight of the branch line short-wave signal that assigns includes: according to reference signal and other branch lines
The signal-to-noise ratio of short-wave signal assigns other described corresponding weights of branch line short-wave signal.
Preferably, signal behavior unit, for calculating the non-referenced signal and the reference signal based on Euclidean distance
Characteristic similarity score value, determined from the branch line short-wave signal wait close according to preset selection criteria and the score value
And branch line short-wave signal.
The beneficial effect of the embodiment of the present invention is:
The embodiment of the present invention can select to transmit stable branch line short-wave signal as base by being based on short-time energy variance
Calibration signal；Branch line short-wave signal is handled based on P.563 standard, the signal characteristic set of high quality is obtained, it is short to assign the branch line
The corresponding weight of wave signal；Branch line short-wave signal to be combined is determined based on characteristic similarity, can select most suitable branch line
Short-wave signal is using the basis as calculating；Based on branch line short-wave signal and corresponding weight to be combined, calculates and obtain comprehensive connect
Collect mail number, can reasonable computation receive signal, reduce error.
Detailed description of the invention
Fig. 1 is a kind of flow chart of embodiment of short-wave reception method；
Fig. 2 is a kind of frame diagram of embodiment of shortwave processing frame；
Fig. 3 is a kind of structure chart of embodiment of short-wave reception system.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
Embodiment 1.
The present embodiment provides a kind of short-wave reception methods as shown in Figure 1, comprising:
S1, multichannel branch line short-wave signal is received, selects to believe on the basis of branch line short-wave signal all the way based on short-time energy variance
Number；
S2, the branch line short-wave signal is handled based on P.563 standard, obtains signal characteristic set, assign branch line shortwave letter
Number corresponding weight；
S3, branch line short-wave signal to be combined is determined based on the characteristic similarity of non-referenced signal and the reference signal；
S4, based on the branch line short-wave signal and corresponding weight to be combined, calculate and obtain Integrated Receiver signal.
Specific short-wave reception process includes: in step S1
It is chosen most according to the short-time energy variance of received each branch (the same branch line of the branch) voice signal of each receiver antenna
Excellent speech channel, i.e. reference signal, wherein after short-time average energy refers to that signal sequence is divided into short time interval one by one, some is in short-term
The mean-square value of the amplitude of segment signal.So-called " in short-term " refers generally to the period less than 32ms, shortens time segment length and be conducive to improve
Detect speed, but the most short half that cannot be less than pitch period, i.e. 2ms.By the voice snippet x (n) of 500ms, it is divided into 25 frames
The subframe of 20ms defines the average energy value of subframeFramelen is lengths of frame, i
For branch line serial number, j is sub-frame number, then the short-time average energy variance of x (n) isIt puts down in short-term
Equal energy variance reflects the power of signal.For shortwave sound bite, the preferable segment of voice quality (corresponding energy variance
Sequence) ρxDispersion is larger, otherwise ρxDispersion is smaller.Dividing one section of short-wave signal is several subframes, calculates single subframe
Energy value x2(j), the average energy value m of subframeiWith corresponding energy variance sequence, label energy variance sequence is short-time average
Energy variance；According to the dispersion of the energy variance sequence select all the way branch line short-wave signal be benchmark signal, such as can be with
Select dispersion the smallest as reference signal.
Shortwave process is specifically handled in step S2 includes:
In the communication environments such as air-ground shortwave, ambient noise majority can be seen as Gaussian and symmetrical random
Process, and voice signal is asymmetrical.High-order statistic contains the unexistent a large amount of useful information of second-order statistic, together
When high-order statistic can also inhibit the Gaussian noise in signal, with the strong remarkable advantage of high resolution, noise resisting ability.Cause
This analyzes voice signal using high-order statistic, can be good at the influence for inhibiting Gaussian noise, extracts voice letter
Previous signal analysis method fails a large amount of useful informations extracted, i.e. higher order statistical theory vector in number.
P.563 standard is first reference source-free speech quality objective assessment standard that ITU-T was proposed in 2004, the calculation
Method extracts 51 kinds of three classes distortion characteristic parameters altogether: 1) sound channel analysis and non-natural voice, 2) strong additional noise analysis, 3) in
Disconnected, mute and time slicing.
The higher order statistical evaluation of linear predictor coefficient and cepstral analysis is wherein mainly based upon for the parameter of speech sound statistics,
The therefrom preferred 12 kinds of distortion characteristic parameters of the present invention, such as measurement are distributed the kurtosis factor of thick tail degree, measurement distribution asymmetric system
Several skewness parameters.The voice of non-natural voice is carried out in the present invention according to the received each branch voice signal of each receiver antenna
Statistical analysis, the model output variable MOV tieed up by preset high-order static statistical analysis model extraction 12 is as characterization voice
The feature set of ratio is activated, the feature vector of description bad channel degree is constituted, is i.e. higher order statistical theory vector, MOV is specifically included:
F01:CepADev, cepstrum standard deviation；F02:CepSkew, cepstrum skewness；F03:CepCurt, cepstrum kurtosis；F04:LPCCurt,
Linear predictor coefficient kurtosis；F05:LPCSkew, linear predictor coefficient skewness；F06:EstSegSNR, it is contemplated that segmental signal-to-noise ratio；
F07:LPCSkewAbs, linear predictor coefficient skewness absolute value；F08:EstBGNoise, it is contemplated that ambient noise；F09:
SpecLevelDev, frequency spectrum rank error；F10:RelNoiseFloor, related background noise；F11:SpecLevelRange,
Frequency spectrum level range；F12:SpeechInterruptions, speech interrupt.By selecting several distortion from P.563 standard
Characteristic parameter, and as feature judgement/extraction benchmark.It is intended that the stent relative to black box state
The feature extraction of formula, being more advantageous to of standardized feature extraction are met professional and suitable are lost based on the judgement selection of itself
True characteristic parameter carries out, i.e., received signal may face under the very familiar P.563 standard of professional and current environment
The problem of, it is thereby possible to select suitable distortion characteristic parameter carries out feature extraction.
Determine that branch line short-wave signal to be combined includes: according to characteristic similarity in step S3
Firstly, short-wave reception is a lasting process, therefore, actual reference signal is to change always
, i.e., the state of the signal of different branch lines is possible to change, and selects the standard of benchmark and process not to change at this time
Become.
Secondly, can of course take the mode of Maximal ratio combiner that whole branch line short-wave signals is all weighted merging
Processing, only in view of the appearance of extreme case or the good branch line short-wave signal of selection signal state are weighted mergings, letter
Number processing effect it is more preferable.Therefore it needs to select suitable branch line short-wave signal to be combined from branch line short-wave signal.
By the high-order static statistical analysis model of received each branch speech (shortwave) signal of each receiver antenna export to
Measure MOVi, i is branch line serial number, by the MOV of non-referenced branchi, high-order static statistical analysis model output vector with optimal speech channel
MOVbestSpeech similarity-rough set is carried out, the similarity score of each more optimal speech channel of branch voice signal is exported.It is commented for exporting
The Rating Model divided is using the sigmod function being transformed:Wherein, score is scoring number, dist
For distance measure, α and β are the parameter for influence function constringency performance, and the value of α is bigger, then the curve of corresponding function is steeper
High and steep, β is then used for the translation of controlling curve, and distance measure is estimated using Euclidean distance, i.e., each more optimal speech channel speech of branch speech
Distance measure:
Then, using the coefficient of similarity of current each branch voice signal as foundation, adaptively in n (eg.N=8) item
Best nc (eg.nc=5) branch of selection performance merges (constantly to the instantaneous phase of the reception of these branches in effective branch
It is compared like degree coefficient, dynamic abandons the lesser low speech quality score branch of similarity, is also that similarity is lesser low
The weight coefficient zero setting of speech quality score branch), Maximal ratio combiner then is carried out to remaining branch.
In step S4, based on branch line short-wave signal to be combined and weight, the process packet for obtaining Integrated Receiver signal is calculated
It includes:
Each branch weight of Maximal ratio combiner is related with corresponding tributary signal amplitude and noise power, if each tributary signal
Noise power is identical, then weighting coefficient and respective branch signal amplitude direct proportionality, if each tributary signal amplitude is identical,
Weighting coefficient and the inversely proportional relationship of respective branch signal noise power.
It is of course also possible to which setting other rules certainly comes regulation weight, the i.e. weighting ratio of reference signal and non-referenced signal.
Embodiment 2.
The purpose of the present embodiment is that illustrating proper a kind of short-wave reception process in actual application:
Step 01, diversity reception simulated voice；
According to business demand, the air to surface short wave analog speech for needing to carry out diversity merging is received as required, according to
The secondary diversity that is cached to merges in segment two-dimensional array, and recording indexes serial number, and wherein two-dimensional array maximum can support 8 road 500ms
Short wave analog voice data.
Step 02, sliding window framing；
The step is mainly realized to the customized of framing length and frame overlap length.For example, in short wave analog Tone Via
Under the not high situation of delay requirement, user can define framing length 500ms, and frame is overlapped 0ms, algorithm time delay 500ms；In shortwave mould
Under the quasi- higher situation of Tone Via delay requirement, user can define framing length 300ms, frame overlap length 50ms, when algorithm
Prolong 250ms.
Step 03, optimal speech channel are chosen；
The step is mainly realized to multi-channel analog speech preferentially, and the best branch voice signal all the way of speech quality is chosen
As template speech, and store the index number of template speech.
Step 04, consolidation strategy selection, that is, judge whether the short-wave reception method for taking embodiment 1.
For example, upper-layer service instruction requires to carry out diversity merging, the step to radio station 2, platform electricity 3, radio station 5 and radio station 8
Radio station 2, platform electricity 3, radio station 5 and radio station 8 can preferentially be merged according to the customer parameter of acquisition.It is to take embodiment
1 short-wave reception method, i.e. step S041~step S043.
Upper-layer service instruction requires to carry out maximum ratio to radio station 1, platform electricity 2, radio station 3, radio station 4, radio station 5 and radio station 6
Merge, which can carry out radio station 1, platform electricity 2, radio station 3, radio station 4, radio station 5 and radio station 6 according to the customer parameter of acquisition
Maximal ratio combiner.It is not the short-wave reception method of embodiment.
Step 05, similarity score calculate Euclidean distance of other each branch speeches compared with template speech:
This step is used to extract the higher order statistical theory vector of optimal speech channel and other branches, and by optimal speech channel as mould
Plate speech channel；
Step 06, merging patterns select, if in step S04, not requiring to take Maximal ratio combiner, then direct basis phase
Euclidean distance is mapped as similarity score like degree Rating Model；If being required in step S04 and taking Maximal ratio combiner,
Maximal ratio combiner mode is taken, then the Euclidean distance according to each branch speech compared with template speech, it is larger dynamically to abandon irrelevance
Speech (zero setting of speech similarity score), Euclidean distance is mapped as similarity according to similarity score models and commented by other speeches
Point.
Step 07 calculates each branch speech weight and merges output speech；
If merging by selection diversity, each branch speech weight computing, direct output template speech are skipped；If pressing high specific
Value merges, then calculates each branch speech weight according to each branch speech similarity score, and then according to each branch right of way estimated
Value, which merges each branch speech, to be exported.
The difference of the present embodiment and embodiment 1 is, increases the selection index system of people, and user can be allowed in embodiment 1
Short-wave reception method on the basis of, more selections can be increased.
Embodiment 3.
The present embodiment provides shortwaves as shown in Figure 2 to handle frame.
If including main line branch speech Si, i is branch line (branch) serial number, chooses optimal branch voice by optimal speech channel
(serial number P) and branch voice to be matched (1~L of serial number), by P.563 high-order statistical analysis obtain it is corresponding export to
Amount, optimal branch are MOVp, other branches are MOV1~L, similarity score is carried out, then according to weight wp、w1~LIt merges,
Export short-wave signal Se。
Embodiment 4.
The present embodiment provides a kind of short-wave reception systems as shown in Figure 3, comprising:
Receiving unit 1, for receiving multichannel branch line short-wave signal, based on the selection of short-time energy variance, branch line shortwave is believed all the way
Number be benchmark signal；
Characteristic processing unit 2 obtains signal characteristic set, assigns for handling branch line short-wave signal based on P.563 standard
The corresponding weight of the branch line short-wave signal；
Signal behavior unit 3, for determining branch to be combined based on the characteristic similarity of non-referenced signal and reference signal
Line short-wave signal；Signal combining unit, for based on branch line short-wave signal and corresponding weight to be combined, calculating to be integrated
Receive signal.
Characteristic processing unit 4, for selecting several distortion characteristic parameter, processing branch line shortwave letter from P.563 standard
Number to obtain the corresponding higher order statistical theory vector of the distortion characteristic parameter, the higher order statistical theory vector of reference signal is marked
For benchmark feature set, other higher order statistical theory vectors are non-referenced feature set.
Assigning the corresponding weight of the branch line short-wave signal includes: the letter according to reference signal and other branch line short-wave signals
It makes an uproar than assigning other described branch line short-wave signals corresponding weight.
Signal behavior unit, for calculating the feature phase of the non-referenced signal and the reference signal based on Euclidean distance
Like the score value of property, branch line to be combined is determined from the branch line short-wave signal according to preset selection criteria and the score value
Short-wave signal.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of short-wave reception method characterized by comprising
Receive multichannel branch line short-wave signal, based on short-time energy variance select all the way branch line short-wave signal be benchmark signal；
Based on the P.563 standard processing branch line short-wave signal, signal characteristic set is obtained, the branch line short-wave signal pair is assigned
The weight answered；
Branch line short-wave signal to be combined is determined based on the characteristic similarity of non-referenced signal and the reference signal；
Based on the branch line short-wave signal and corresponding weight to be combined, calculates and obtain Integrated Receiver signal.
2. a kind of short-wave reception method according to claim 1, which is characterized in that obtaining short-time energy variance includes:
Dividing one section of short-wave signal is several subframes, calculates the energy value of single subframe, the average energy value of subframe and corresponding energy
Variance sequence is measured, marking the energy variance sequence is short-time average energy variance；
It is corresponding, according to the dispersion of the energy variance sequence select all the way branch line short-wave signal be benchmark signal.
3. a kind of short-wave reception method according to claim 1, which is characterized in that described to handle institute based on P.563 standard
Stating branch line short-wave signal includes:
Several distortion characteristic parameter is selected from the P.563 standard, handles the branch line short-wave signal to obtain the mistake
The corresponding higher order statistical theory vector of true characteristic parameter, marking the higher order statistical theory vector of reference signal is benchmark feature set,
Other higher order statistical theory vectors are non-referenced feature set.
4. a kind of short-wave reception method according to claim 1, which is characterized in that described to assign the branch line short-wave signal
Corresponding weight includes:
According to reference signal weight corresponding with other described branch line short-wave signals of the signal-to-noise ratio of other branch line short-wave signals imparting.
5. a kind of short-wave reception method according to claim 1, which is characterized in that described based on non-referenced signal and described
The characteristic similarity of reference signal determines that branch line short-wave signal to be combined includes:
The score value that the characteristic similarity of the non-referenced signal and the reference signal is calculated based on Euclidean distance, according to default
Selection criteria and the score value branch line short-wave signal to be combined is determined from the branch line short-wave signal.
6. a kind of short-wave reception system characterized by comprising
Receiving unit, for receiving multichannel branch line short-wave signal, based on short-time energy variance select all the way branch line short-wave signal for
Reference signal；
Characteristic processing unit obtains signal characteristic set, assigns for handling the branch line short-wave signal based on P.563 standard
The corresponding weight of the branch line short-wave signal；
Signal behavior unit, for determining branch line to be combined based on the characteristic similarity of non-referenced signal and the reference signal
Short-wave signal；
Signal combining unit, for calculating and obtaining comprehensive connect based on the branch line short-wave signal and corresponding weight to be combined
The collection of letters number.
7. short-wave reception system according to claim 6, which is characterized in that obtaining short-time energy variance includes:
Dividing one section of short-wave signal is several subframes, calculates the energy value of single subframe, the average energy value of subframe and corresponding energy
Variance sequence is measured, marking the energy variance sequence is short-time average energy variance；
The receiving unit, according to the dispersion of the energy variance sequence select all the way branch line short-wave signal be benchmark signal.
8. short-wave reception system according to claim 6, which is characterized in that characteristic processing unit, for from it is described P.563
Several distortion characteristic parameter is selected in standard, it is corresponding to obtain the distortion characteristic parameter to handle the branch line short-wave signal
Higher order statistical theory vector, marking the higher order statistical theory vector of reference signal is benchmark feature set, and other higher order statisticals are special
Sign vector is non-referenced feature set.
9. short-wave reception system according to claim 6, which is characterized in that the imparting branch line short-wave signal is corresponding
Weight include:
According to reference signal weight corresponding with other described branch line short-wave signals of the signal-to-noise ratio of other branch line short-wave signals imparting.
10. short-wave reception system according to claim 6, which is characterized in that signal behavior unit, for based on Euclidean away from
Score value from the characteristic similarity for calculating the non-referenced signal and the reference signal, according to preset selection criteria and institute
Commentary score value determines branch line short-wave signal to be combined from the branch line short-wave signal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113890577A (en) * | 2021-09-28 | 2022-01-04 | 电子科技大学 | Rapid diversity method based on signal similarity |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63314028A (en) * | 1987-06-17 | 1988-12-22 | Matsushita Electric Ind Co Ltd | Automatic switching device for intermediate frequency band of short wave broadcasting receiver |
| US20090036074A1 (en) * | 2007-08-01 | 2009-02-05 | Delphi Delco Electronics Europe Gmbh | Antenna diversity system having two antennas for radio reception in vehicles |
| CN103716267A (en) * | 2012-09-29 | 2014-04-09 | 航天恒星科技有限公司 | Broadband signal space diversity synthesis method |
| CN204304999U (en) * | 2014-12-31 | 2015-04-29 | 陕西烽火电子股份有限公司 | A kind of multichannel short-wave reception device |
| CN105577263A (en) * | 2015-12-17 | 2016-05-11 | 中国人民解放军国防信息学院 | Diversity receiving method and system, based on soft value merging, of short wave access network |
| CN105827298A (en) * | 2016-04-21 | 2016-08-03 | 哈尔滨工业大学 | Multi-site diversity receiving method under shortwave signal non-synchronous sampling condition |
| CN109147759A (en) * | 2018-10-09 | 2019-01-04 | 电子科技大学 | A kind of shortwave voice signal diversity merging method of reseptance based on marking algorithm |
-
2019
- 2019-07-03 CN CN201910594135.8A patent/CN110444228B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63314028A (en) * | 1987-06-17 | 1988-12-22 | Matsushita Electric Ind Co Ltd | Automatic switching device for intermediate frequency band of short wave broadcasting receiver |
| US20090036074A1 (en) * | 2007-08-01 | 2009-02-05 | Delphi Delco Electronics Europe Gmbh | Antenna diversity system having two antennas for radio reception in vehicles |
| CN103716267A (en) * | 2012-09-29 | 2014-04-09 | 航天恒星科技有限公司 | Broadband signal space diversity synthesis method |
| CN204304999U (en) * | 2014-12-31 | 2015-04-29 | 陕西烽火电子股份有限公司 | A kind of multichannel short-wave reception device |
| CN105577263A (en) * | 2015-12-17 | 2016-05-11 | 中国人民解放军国防信息学院 | Diversity receiving method and system, based on soft value merging, of short wave access network |
| CN105827298A (en) * | 2016-04-21 | 2016-08-03 | 哈尔滨工业大学 | Multi-site diversity receiving method under shortwave signal non-synchronous sampling condition |
| CN109147759A (en) * | 2018-10-09 | 2019-01-04 | 电子科技大学 | A kind of shortwave voice signal diversity merging method of reseptance based on marking algorithm |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113890577A (en) * | 2021-09-28 | 2022-01-04 | 电子科技大学 | Rapid diversity method based on signal similarity |
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