CN104796181A - Short-wave double-antenna digital communication system and automatic receiving verification method for the same - Google Patents
Short-wave double-antenna digital communication system and automatic receiving verification method for the same Download PDFInfo
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Abstract
The invention relates to a short-wave double-antenna digital communication system and an automatic receiving verification method for the short-wave double-antenna digital communication system. The short-wave double-antenna digital communication system is improved on the basis of a single-receiving single-sending digital communication system and characterized by increasing a second receiving antenna, a second digital receiver, a second digital transmitter and a second transmitting antenna. The automatic receiving verification method is completed through the short-wave frequency management program, the message automatic verification joint program and the message selection retransmission program which are loaded in a self-adaption controller. The short-wave double-antenna digital communication system has the advantages as follows: (1) greatly improving the reliability and capable of realizing normal communication when one channel is interfered due to the double channels provided by the double antennas for the short-wave communication; (2) avoiding repeated message sending which takes up the communication time due to adoption of the new channel detection strategy and retransmission of partial mistaking messages during retransmission and greatly shortening the communication time; (3) increasing the communication quality; and (4) increasing the anti-interference capability.
Description
Technical field
The present invention relates to a kind of shortwave double antenna digital communication system and automatic reception method of calibration thereof, belong to hf radio communication field.
Background technology
The single-shot list of current use is received short-wave digital communication system (see figure 1) and is comprised the first reception antenna, the first Digital Receiver, adaptive controller, the first digitlization transmitter, the first transmitting antenna, computer and radio school newspaper terminal; Described first reception antenna connects the corresponding port of the first Digital Receiver, an input port of the output termination adaptive controller of described first Digital Receiver, one of described adaptive controller exports the input of termination first digitlization transmitter, output termination first transmitting antenna of described first digitlization transmitter, described adaptive controller is connected with computer bidirectional, and described computer and radio school newspaper terminal are bi-directionally connected.
Described single-shot list receives the groundwork link of short-wave digital communication system as shown in Figure 2, find in work statistic, link one time used is 3-5 minute, and signal sends, and (disregarding message input) is about 1-2 minute, and the disposable successful launch of message time average used is 6 minutes.When message sends unsuccessfully, usually take the mode changed speed, change channel to continue communication, need repetition link two to link four, when channel quality degrades, need link re-establishment communication, repeat the whole link of above-mentioned short wave communication, efficiency is very low.
The shortcoming that short-wave digital communication system received by above-mentioned single-shot list is as follows:
(1) the channel detection time is long, weak effect.In channel detection process, first carry out link-quality detection to all working channel (frequency), this process is called link capacity control LQA, then generates channel according to score height and uses precedence table, during communication, preferentially use optimum channel (channel that score is the highest).In detection process, each channel needs manually to shake hands through three times to confirm, through statistics, the time completing a channel detection is about 17 seconds, and working channel number is more, and the time of needs is longer.Generally, working channel is 9, whole channel detection process consuming time 2 ' 30 ".In theory, channel detection can to offer the best channel for communication, and communication also can be made to reach optimum efficiency.But because short wave channel has real-time sex change, long channel detection can cause result of detection not have real-time, and its referential reduces greatly.
Because this system does not carry out analyses and prediction to channel frequency, so the channel that this system provides adopts in precedence table contain more unwanted frequency, channel detection is made to have larger blindness.Simultaneously because the channel detection time is long, cause channel reliability reduction in use, the channel after even causing selection when channel variation is fast cannot use.For detecting the result obtained, can not judge for selecting proper communication speed, being not easy to again communication next time and using, frequency usage inefficiency.
(2) according to statistics, the successful probability of the disposable transmission of short wave communication is only about about 50%.After communication disruption, need from link setup, repeat whole communication process, call duration time is extended greatly, and in retransmission process, need message from the beginning to retransmit, repeatedly send and receive successful data, reduce communication efficiency.Variations is fast or when there is disturbed condition, if channel is less than the whole access time stabilization time, each transmission all can be interrupted, and information is in retransmission state all the time and fails to send successfully, cannot complete communication.
(3) artificial link is many, and automation degree of equipment is low.Because short wave communication channel is unstable, for guaranteeing to send success rate, before the message, need to take the mode of manually shaking hands to determine channel quality.When message sends unsuccessfully, usually take change traffic rate or frequency to resend, this process also needs to adopt manual type to carry out confirmation change.After receiving terminal receives message, usually carry out desk checking to guarantee the quality of reception.The too much participation of short wave communication artificial process, considerably increases call duration time.
(4) short wave communication easily causes communication disruption under bad electromagnetic environment, and the mode that current device adopts single-shot list to receive communicates, and there is wretched insufficiency, drastically influence the performance of short wave communication effect in reliability, stability etc.
(5) antenna of this system belongs to fixed antenna, can not regulate antenna, is difficult to the best efficiency having given play to antenna.
Summary of the invention
Technical problem to be solved by this invention is for the problems of the prior art, and provides that a kind of reliability, high anti-jamming capacity are strong, the channel detection time is short, only needs shortwave double antenna digital communication system and the automatic reception method of calibration thereof of the message of retransmission error part when retransmitting.
The present invention solves the technical scheme that above technical problem adopts:
Technical scheme one (shortwave double antenna digital communication system)
Shortwave double antenna digital communication system of the present invention improves to form on the basis of Single-Input Single-Output digital communication system, and concrete technical scheme is as follows:
A kind of shortwave double antenna digital communication system, comprises the first reception antenna, the first Digital Receiver, adaptive controller, the first digitlization transmitter, the first transmitting antenna, computer and radio school newspaper terminal; Described first reception antenna connects the corresponding port of the first Digital Receiver, an input port of the output termination adaptive controller of described first Digital Receiver, one of described adaptive controller exports the input of termination first digitlization transmitter, output termination first transmitting antenna of described first digitlization transmitter, described adaptive controller is connected with computer bidirectional, and described computer and radio school newspaper terminal are bi-directionally connected; Characterized by further comprising the second reception antenna, the second Digital Receiver, the second digitlization transmitter and the second transmitting antenna; Described second reception antenna connects the corresponding port of the second Digital Receiver, another input port of the output termination adaptive controller of described second Digital Receiver, the input of another output termination second digitlization transmitter of described adaptive controller, the output termination second digitlization transmitting antenna of described second digitlization transmitter.
Described first reception antenna, the second reception antenna, the first transmitting antenna and the second transmitting antenna adopt the antenna system with diversity receiving technology.
Technical scheme two (automatic reception method of calibration)
Described automatic reception method of calibration selects retransmission procedure to complete by short frequency hypervisor, message automatic Verification splice program and the message be arranged in described adaptive controller;
(1) flow process of described short frequency hypervisor is as follows:
(1) history channel frequence and ionospheric forecast data are read:
Described ionization forecast data is provided by specialized department;
(2) order of priority table and the grouping thereof of frequency sonding is provided:
Adopt average weighted method, each frequency that will detect is given a mark according to result of detection, provides the order of priority table of frequency sonding by score height order, and by described order of priority table grouping, odd term in order of priority table is first frequency group, and even item is second frequency group; The frequency of first frequency group is used for the first transmitting antenna, and the frequency of second frequency group is used for the second transmitting antenna;
(3) channel detection is carried out:
Adopt new channel detection strategy to carry out channel detection to first, second group of frequencies respectively, described new channel detection strategy is as follows:
Detect from often organizing the highest frequency of score, when the signal to noise ratio and the error rate that detect certain channel reach request signal transmission, stop the detection with lower channel immediately;
(4) whether the channel detected meets transmission conditions:
If do not meet transmission conditions, return (3) step, next channel is organized to each and detects;
If meet transmission conditions, enter next step;
(5) communication frequency and traffic rate is provided, link setup communication:
When detecting certain channel and reaching transmission conditions, provide the traffic rate under this condition, traffic rate is selected as follows: adopt high traffic rate when result of detection score height, adopts low communication speed when result of detection score is low;
Employing meets the communication frequency of communication condition and communicates with the traffic rate link setup under this condition;
(6) whether link setup communication is successful:
If link setup communication is unsuccessful, return (3) step; The next channel often organized is detected; If link setup communication success, enters next step;
(7) historical communication frequency is upgraded:
When link setup communication success, upgrade historical communication frequency;
(8) terminate;
(2) flow process of message automatic Verification splice program is as follows:
(1) message A and message B is read;
Read the two part messages of transmit leg by first, second transmission antennas transmit, i.e. message A and message B;
(2) judge whether two parts of messages are with a message;
Recipient, according to the message numbering of described two parts of messages, judges whether two parts of messages are with a message;
If not with a message, then directly enter (8) step;
If with a message, then enter next step;
(3) two parts of messages are verified, if find mistake, provide errors present:
Utilize radio school newspaper terminal to verify described two parts of messages, if find to there is mistake, provide the errors present of every part of message respectively;
(4) judge whether to there is a complete message:
If there is a complete message, then directly enter (8) step; If there is not a complete message, enter next step;
(5) utilize the correct part in two parts of messages to splice, formed and splice message for the first time:
With message A for template verifies, when message A exists errors present, and message B is correct message at the message of the corresponding errors present of message A, now, removes the error message in alternative message A with the correct message in message B, is formed and splices message for the first time;
(6) whether first time splicing message is correct:
Described first time splicing message is verified, judges that whether it is correct, if splicing of described first time message is correct, then directly enter (8) step; If first time splicing message is incorrect, enter next step;
(7) errors present of splicing of described first time message is recorded;
(8) terminate;
(3) message selects the flow process of retransmission procedure as follows:
(1) errors present of described first time splicing message is sent to transmit leg; Require the correct message of transmit leg retransmission error position, namely send two parts and retransmit message;
(2) retransmit message by described two parts to verify respectively, carry out splicing after verification and obtain retransmitting splicing message;
(3) whether correctly splicing message is retransmitted:
Re-transmission splicing message is verified, if it is incorrect to retransmit splicing message, then returns (1) step; If it is correct to retransmit splicing message, then enter next step;
(4) described re-transmission splicing message is correctly spliced message with first time again to splice, finally spliced message;
(5) whether verification final splicing message is correct, if incorrect, then returns (1) step, if correct, enters next step:
(6) terminate.
Beneficial effect of the present invention is as follows:
(1) reliability is substantially increased:
1. shorten channel detection and channel use between interval, have rational traffic rate, channel dependability improves greatly.
2. double antenna is that short wave communication provides binary channels, still can proper communication when a certain passage is interfered.
3. when communication quality is poor, two channels all fail to receive a complete message, are spliced by message checking, still can realize the complete reception of message.
(2) reduced communication time:
1. the order of priority table table of frequency sonding is reliable, and channel detection number is few, decreases the time that channel detection spends.
2. reduce the probability of communication disruption, avoid repeatedly the link setup cost plenty of time.
3. retransmit time a retransmission error segment message, avoid repeatedly repeat send message take call duration time.
(3) communication quality is enhanced:
1. adopt antenna system, short wave communication is had and better receives and dispatches performance.2. make full use of the advantage of multiple antennas, adopt diversity receiving technology to process signal, improve gain, reduce the error rate.
(4) antijamming capability strengthens:
1. binary channels is that short wave communication provides two paths, avoids a certain tunneling traffic frequency and is interfered and the situation that cannot communicate.
2. adopt and select retransmission technique, as long as interference signal interference period is less than the time that a byte sends, through repeatedly retransmitting, still can successfully send all data, antijamming capability strengthens greatly.
Accompanying drawing explanation
Fig. 1 is the theory diagram that short-wave digital communication system received by existing single-shot list.
Fig. 2 is the groundwork link schematic diagram of the single-shot list receipts digital communication system shown in Fig. 1.
Fig. 3 is the theory diagram of shortwave double antenna digital communication system of the present invention.
Fig. 4 is the flow chart of short frequency hypervisor.
Fig. 5 is the program flow diagram of message automatic Verification splice program.
Fig. 6 is the program flow diagram that message selects retransmission procedure.
Embodiment
Embodiment 1(shortwave double antenna digital communication system)
Shortwave double antenna digital communication system of the present invention improves to form on the basis of Single-Input Single-Output digital communication system, the following (see figure 3) of concrete technical scheme:
A kind of shortwave double antenna digital communication system, comprises the first reception antenna, the first Digital Receiver, adaptive controller, the first digitlization transmitter, the first transmitting antenna, computer and radio school newspaper terminal; Described first reception antenna connects the corresponding port of the first Digital Receiver, an input port of the output termination adaptive controller of described first Digital Receiver, one of described adaptive controller exports the input of termination first digitlization transmitter, output termination first transmitting antenna of described first digitlization transmitter, described adaptive controller is connected with computer bidirectional, and described computer and radio school newspaper terminal are bi-directionally connected; Characterized by further comprising the second reception antenna, the second Digital Receiver, the second digitlization transmitter and the second transmitting antenna; Described second reception antenna connects the corresponding port of the second Digital Receiver, another input port of the output termination adaptive controller of described second Digital Receiver, the input of another output termination second digitlization transmitter of described adaptive controller, the output termination second digitlization transmitting antenna of described second digitlization transmitter.
Described first reception antenna, the second reception antenna, the first transmitting antenna and the second transmitting antenna adopt the antenna system with diversity receiving technology.Adopt antenna system can the relevant information such as geographical position, communication frequency of comprehensive assessment communicating pair in the present embodiment, in real time adjustment is carried out to the direction of Antenna Transmit-Receive, given play to the best efficiency of antenna; Adopt double antenna, a certain channel can be avoided on the one hand to cause communication disruption being interfered, improve message and send success rate successively, strengthen reliability; The advantage of multiple antennas can be made full use of on the other hand, adopt diversity receiving technology to process signal, improve gain, reduce the error rate.
Embodiment 2(automatic reception method of calibration):
Described automatic reception method of calibration selects retransmission procedure to complete by short frequency hypervisor, message automatic Verification splice program and the message be arranged in described adaptive controller;
(1) the following (see figure 4) of flow process of described short frequency hypervisor:
(1) history channel frequence and ionospheric forecast data are read:
Described ionization forecast data is provided by specialized department;
(2) order of priority table and the grouping thereof of frequency sonding is provided:
Adopt average weighted method, each frequency that will detect is given a mark according to result of detection, provides the order of priority table of frequency sonding by score height order, and by described order of priority table grouping, odd term in order of priority table is first frequency group, and even item is second frequency group; The frequency of first frequency group is used for the first transmitting antenna, and the frequency of second frequency group is used for the second transmitting antenna;
(3) channel detection is carried out:
Adopt new channel detection strategy to carry out channel detection to first, second group of frequencies respectively, described new channel detection strategy is as follows:
Detect from often organizing the highest frequency of score, when the signal to noise ratio and the error rate that detect certain channel reach request signal transmission, stop the detection with lower channel immediately;
(4) whether the channel detected meets transmission conditions:
If do not meet transmission conditions, return (3) step, next channel is organized to each and detects;
If meet transmission conditions, enter next step;
(5) communication frequency and traffic rate is provided, link setup communication:
When detecting certain channel and reaching transmission conditions, provide the traffic rate under this condition, traffic rate is selected as follows: adopt high traffic rate when result of detection score height, adopts low communication speed when result of detection score is low;
Employing meets the communication frequency of communication condition and communicates with the traffic rate link setup under this condition;
(6) whether link setup communication is successful:
If link setup communication is unsuccessful, return (3) step; The next channel often organized is detected; If link setup communication success, enters next step;
(7) historical communication frequency is upgraded:
When link setup communication success, upgrade historical communication frequency;
(8) terminate;
(2) the following (see figure 5) of the flow process of message automatic Verification splice program:
(1) message A and message B is read;
Read the two part messages of transmit leg by first, second transmission antennas transmit, i.e. message A and message B;
(2) judge whether two parts of messages are with a message;
Recipient, according to the message numbering of described two parts of messages, judges whether two parts of messages are with a message;
If not with a message, then directly enter (8) step;
If with a message, then enter next step;
(3) two parts of messages are verified, if find mistake, provide errors present:
Utilize radio school newspaper terminal to verify described two parts of messages, if find to there is mistake, provide the errors present of every part of message respectively;
(4) judge whether to there is a complete message:
If there is a complete message, then directly enter (8) step; If there is not a complete message, enter next step;
(5) utilize the correct part in two parts of messages to splice, formed and splice message for the first time:
With message A for template verifies, when message A exists errors present, and message B is correct message at the message of the corresponding errors present of message A, now, removes the error message in alternative message A with the correct message in message B, is formed and splices message for the first time;
(6) whether first time splicing message is correct:
Described first time splicing message is verified, judges that whether it is correct, if splicing of described first time message is correct, then directly enter (8) step; If first time splicing message is incorrect, enter next step;
(7) errors present of splicing of described first time message is recorded;
(8) terminate;
(3) message selects the following (see figure 6) of flow process of retransmission procedure:
(1) errors present of described first time splicing message is sent to transmit leg; Require the correct message of transmit leg retransmission error position, namely send two parts and retransmit message;
(2) retransmit message by described two parts to verify respectively, carry out splicing after verification and obtain retransmitting splicing message;
(3) whether correctly splicing message is retransmitted:
Re-transmission splicing message is verified, if it is incorrect to retransmit splicing message, then returns (1) step; If it is correct to retransmit splicing message, then enter next step;
(4) described re-transmission splicing message is correctly spliced message with first time again to splice, finally spliced message;
(5) whether verification final splicing message is correct, if incorrect, then returns (1) step, if correct, enters next step;
(6) terminate.
Claims (3)
1. a shortwave double antenna digital communication system, comprises the first reception antenna, the first Digital Receiver, adaptive controller, the first digitlization transmitter, the first transmitting antenna, computer and radio school newspaper terminal; Described first reception antenna connects the corresponding port of the first Digital Receiver, an input port of the output termination adaptive controller of described first Digital Receiver, one of described adaptive controller exports the input of termination first digitlization transmitter, output termination first transmitting antenna of described first digitlization transmitter, described adaptive controller is connected with computer bidirectional, and described computer and radio school newspaper terminal are bi-directionally connected; Characterized by further comprising the second reception antenna, the second Digital Receiver, the second digitlization transmitter and the second transmitting antenna; Described second reception antenna connects the corresponding port of the second Digital Receiver, another input port of the output termination adaptive controller of described second Digital Receiver, the input of another output termination second digitlization transmitter of described adaptive controller, the output termination second digitlization transmitting antenna of described second digitlization transmitter.
2. shortwave double antenna digital communication system according to claim 1, is characterized in that described first reception antenna, the second reception antenna, the first transmitting antenna and the second transmitting antenna adopt the antenna system with diversity receiving technology.
3., based on the automatic reception method of calibration of the shortwave double antenna digital communication system described in claim 1 or 2, it is characterized in that described automatic reception method of calibration selects retransmission procedure to complete by short frequency hypervisor, message automatic Verification splice program and the message be arranged in described adaptive controller;
(1) flow process of described short frequency hypervisor is as follows:
Read history channel frequence and ionospheric forecast data:
Described ionization forecast data is provided by specialized department;
Provide order of priority table and the grouping thereof of frequency sonding:
Adopt average weighted method, each frequency that will detect is given a mark according to result of detection, provides the order of priority table of frequency sonding by score height order, and by described order of priority table grouping, odd term in order of priority table is first frequency group, and even item is second frequency group; The frequency of first frequency group is used for the first transmitting antenna, and the frequency of second frequency group is used for the second transmitting antenna;
Carry out channel detection;
Adopt new channel detection strategy to carry out channel detection to first, second group of frequencies respectively, described new channel detection strategy is as follows:
Detect from often organizing the highest frequency of score, when the signal to noise ratio and the error rate that detect certain channel reach request signal transmission, stop the detection with lower channel immediately;
Whether the channel of detection meets transmission conditions:
If do not meet transmission conditions, return (3) step, next channel is organized to each and detects;
If meet transmission conditions, enter next step;
Provide communication frequency and traffic rate, link setup communication:
When detecting certain channel and reaching transmission conditions, provide the traffic rate under this condition, traffic rate is selected as follows: adopt high traffic rate when result of detection score height, adopts low communication speed when result of detection score is low;
Employing meets the communication frequency of communication condition and communicates with the traffic rate link setup under this condition;
Whether link setup communication is successful:
If link setup communication is unsuccessful, return (3) step; The next channel often organized is detected; If link setup communication success, enters next step;
Upgrade historical communication frequency:
When link setup communication success, upgrade historical communication frequency;
Terminate;
(2) flow process of message automatic Verification splice program is as follows:
Read message A and message B;
Read the two part messages of transmit leg by first, second transmission antennas transmit, i.e. message A and message B;
Judge whether two parts of messages are with a message;
Recipient, according to the message numbering of described two parts of messages, judges whether two parts of messages are with a message;
If not with a message, then directly enter (8) step;
If with a message, then enter next step;
Two parts of messages are verified, if find mistake, provide errors present:
Utilize radio school newspaper terminal to verify described two parts of messages, if find to there is mistake, provide the errors present of every part of message respectively;
Judge whether to there is a complete message:
If there is a complete message, then directly enter (8) step; If there is not a complete message, enter next step;
Utilize the correct part in two parts of messages to splice, formed and splice message for the first time:
With message A for template verifies, when message A exists errors present, and message B is correct message at the message of the corresponding errors present of message A, now, removes the error message in alternative message A with the correct message in message B, is formed and splices message for the first time;
Whether first time splicing message is correct:
Described first time splicing message is verified, judges that whether it is correct, if splicing of described first time message is correct, then directly enter (8) step; If first time splicing message is incorrect, enter next step;
Record the errors present of splicing of described first time message;
Terminate;
(3) message selects the flow process of retransmission procedure as follows:
The errors present of described first time splicing message is sent to transmit leg; Require the correct message of transmit leg retransmission error position, namely send two parts and retransmit message;
Retransmit message by described two parts to verify respectively, carry out splicing after verification and obtain retransmitting splicing message;
Whether correctly retransmit splicing message:
Re-transmission splicing message is verified, if it is incorrect to retransmit splicing message, then returns (1) step; If it is correct to retransmit splicing message, then enter next step;
Described re-transmission splicing message is correctly spliced message with first time again splice, finally spliced message;
Whether verification final splicing message is correct, if incorrect, then returns (1) step, if correct, enters next step:
Terminate.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554853A (en) * | 2015-12-31 | 2016-05-04 | 陕西烽火电子股份有限公司 | Method for optimizing shortwave boot communication |
| CN109152060A (en) * | 2018-09-26 | 2019-01-04 | 中国人民解放军陆军工程大学 | Transmitter channel distribution model and method in a kind of shortwave downlink communication |
| CN110896158A (en) * | 2018-09-12 | 2020-03-20 | 宁德时代新能源科技股份有限公司 | Battery management system, battery management unit and unit to be managed |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2884697Y (en) * | 2005-11-03 | 2007-03-28 | 耿直 | Double-channel radio communicator |
| US20120170682A1 (en) * | 2009-06-23 | 2012-07-05 | Nokia Corporation | Dual Channel Transmission |
| CN202889494U (en) * | 2012-09-26 | 2013-04-17 | 周平稻 | An audio-video wireless frequency-modulation receiver with double antennas |
| CN103647564A (en) * | 2013-12-06 | 2014-03-19 | 陕西烽火实业有限公司 | Binary channel shortwave signal diversity receiving system and receiving method thereof |
-
2015
- 2015-03-27 CN CN201510138470.9A patent/CN104796181B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2884697Y (en) * | 2005-11-03 | 2007-03-28 | 耿直 | Double-channel radio communicator |
| US20120170682A1 (en) * | 2009-06-23 | 2012-07-05 | Nokia Corporation | Dual Channel Transmission |
| CN202889494U (en) * | 2012-09-26 | 2013-04-17 | 周平稻 | An audio-video wireless frequency-modulation receiver with double antennas |
| CN103647564A (en) * | 2013-12-06 | 2014-03-19 | 陕西烽火实业有限公司 | Binary channel shortwave signal diversity receiving system and receiving method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554853A (en) * | 2015-12-31 | 2016-05-04 | 陕西烽火电子股份有限公司 | Method for optimizing shortwave boot communication |
| CN105554853B (en) * | 2015-12-31 | 2019-01-11 | 陕西烽火电子股份有限公司 | A kind of optimization method of shortwave booting communication |
| CN110896158A (en) * | 2018-09-12 | 2020-03-20 | 宁德时代新能源科技股份有限公司 | Battery management system, battery management unit and unit to be managed |
| CN109152060A (en) * | 2018-09-26 | 2019-01-04 | 中国人民解放军陆军工程大学 | Transmitter channel distribution model and method in a kind of shortwave downlink communication |
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| CN104796181B (en) | 2017-10-10 |
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