CN108989748B - A kind of method and system that the video figure based on microwave technology passes - Google Patents
A kind of method and system that the video figure based on microwave technology passes Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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Abstract
The method and system for the video figure biography based on microwave technology that the present invention relates to a kind of, wherein method includes (1) video acquisition and transmitting；(2) video reception and decompression.Wherein system includes data acquisition module, emitting module module, receiving unit module and ground control centre, data acquisition module is connected with emitting module module and forms one-way data transfer, and emitting module module and receiving unit module form one-way data transfer；Receiving unit module is connected with ground control centre and forms one-way data transfer；Video image data is transferred to emitting module module by first interface group by data acquisition module；Emitting module module issues video image data signal, and video image data signal receives video image data signal by microwave transmission, by receiving unit module, then is transferred to ground control centre by second interface group by receiving unit module.This method transmitting video image data and can not interrupt, strong antijamming capability accurately.
Description
Technical field
It is passed the present invention relates to transmission of video and compression technique area more particularly to a kind of video figure based on microwave technology
Method and system.
Background technique
In recent years, with the continuous development of information, moving video image transmission is widely used in public security command car, traffic accident
Scout carrier, Fire soldier floor manager vehicle and customs, oil field, mine, water conservancy, electric power, finance, maritime affairs, and other urgent,
Emergency commading system, main function are that the realtime graphic at scene is transmitted back to command centre, make the commanding and decision-making people of command centre
Member is such as on the spot in person, improves the accuracy and timeliness of decision, improves working efficiency.
Various wisdom scheduling methods are popularized, and carry out command centre and each end by wireless video, voice transmission mode
Floor manager scheduling between end has become a kind of main floor manager means of work.But by local region network blind area of coverage
The problem of influence, data-transmission interruptions, happens occasionally, and carrys out greatly difficulty to floor manager work belt is carried out.
Chinese patent literature (application No. is: a kind of method of transmitting video data 201710571172.8) is disclosed, is used for
It effectively solves the problems, such as to interrupt only with single kind of transmission of video channel transfer；It include: S1: to the original video data point of acquisition
It is not transmitted not simultaneously by the mobile transmission channel in point-to-point microwave transmission channel and operator, and is every in transmission process
One frame adds time tag；S2: the two-path video data for passing through two channel transfers are received, and according to pre-defined rule, when passing through
Between label two-path video data are integrated, obtain output video data.Which employs the mobile transmission of operator and microwave to pass
Defeated combination, but actually answer, many remote districts all do not have the mobile operator network coverage or a certain area that nature calamity occurs
Evil, carrier network is impaired, and video data transmission is just affected or even transmission of video interrupts.
Therefore, it is now necessary to which developing a kind of is not in interrupt video image transmission system and method based on microwave technology.
Summary of the invention
The technical problem to be solved by the present invention is to, provide it is a kind of can accurately transmitting video image data and do not interrupt
The method that the jamproof video figure based on microwave technology passes.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that: should based on microwave technology video figure pass
Method, comprising the following steps:
(1) video acquisition and transmitting:
S11: vehicle or/and unmanned plane are controlled using ground or/and individual combat equipment tool carries camera and carries out video
Image Acquisition；
S12: after video image acquisition, video image data is compressed by the synthetical baseband in transmitting terminal, is encoded,
Interweave；
S13: after being compressed, synthetical baseband will be completed to export the framing of transmission data and control hair video image
Signal is penetrated, intermediate frequency is modulated signals into using microwave technology, video is sent out；
(2) video reception and decompression:
S21: transmission of video images signal is received using receiving antenna；
S22: after the completion of receiving signal, receiver, which carries out deposit operation to video image data, prevents loss of data；
S23: after data are deposited, receiver will extract video image data；
S24: after video image data decompression, operation is decoded to image data using entropy decoding.
By adopting the above technical scheme, vehicle or/and unmanned plane are controlled by ground or/and the carrying of individual combat equipment tool is taken the photograph
After carrying out video image acquisition as head, utilize microwave technology by video image after overcompression collected video image data
It is transferred to client, computer software is recycled to obtain video data stream and plays, store video, it can using microwave technology transmission
With save bandwidth and can strengthen the system anti-interference ability, guarantee transmission process do not interrupt.
As the preferred technical solution of the present invention, video image data is used by improvement in the step S12
MPEG-4 Image Compression, using interframe compression, only storage contacts differentiated place between frame, increasing compression ratio.Micro-
In wave transmission, system is using MPEG-4 compression of images, the coding techniques for having already passed through improvement, and using interframe compression, only storage joins
It is differentiated place between frame, it is 1/10th of original image that compressed image is made under the conditions of equal quality, thus
Reach biggish compression ratio (maximum can reach 5000:1, and the maximum compression ratio of script MPEG-4 is 4000:1), the figure after improvement
As the transmission rate of video in a network can will be substantially improved in compress technique；Image can be substantially improved in a network
Transmission rate.Solves the problems such as video figure passes too long delay, frame-skipping, unintelligible transmission picture simultaneously.Wherein interframe compression is
There is redundancy between its consecutive frame of continuous video, according to this characteristic, compress the amount of redundancy between consecutive frame
Decrement is further increased, compression ratio is reduced.
As the preferred technical solution of the present invention, the microwave technology in the step S13 is multiple for coded orthogonal frequency division
Use technology.In image transmitting process, according to actual transmissions requirement, video resolution and transmission code rate are adjusted, so that each sub- load
Wave is mutually orthogonal and the frequency spectrum of each subcarrier has half overlapping, using coded orthogonal frequency division multiplexing technology by signal tune
Intermediate frequency is made, and enhances anti-interference ability, improves transmission range；And bandwidth can be saved.
Further include S25 in the step (2) as the preferred technical solution of the present invention: after video image decoding, Ji Ke
Client is shown.
The present invention also technical problems to be solved be to provide it is a kind of can accurately transmitting video image data and not in
The disconnected video image transmission system based on microwave technology.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that: should based on microwave technology video figure pass
System, including data acquisition module, emitting module module, receiving unit module and ground control centre, the data acquisition module
Block is connected with the emitting module module and forms one-way data transfer, the emitting module module and the receiving unit mould
Block forms one-way data transfer；The receiving unit module is connected with the ground control centre and forms one-way data biography
It is defeated；Video image data is transferred to emitting module module by first interface group by the data acquisition module；The transmitting group
Part module issues video image data signal, and video image data signal is by microwave transmission, by the receiving unit module
Video image data signal is received, then ground control centre is transferred to by second interface group by receiving unit module.Using upper
Technical solution is stated, video image data is transferred to emitting module module by first interface group by data acquisition module first；In
In emitting module module, video image data first pass around the compression of the MPEG-4 compress technique of the improvement of synthetical baseband, coding,
The operation such as intertexture, after waiting completions to compress, emitting module module control transmitting signal goes out video image data by microwave transmission
It goes；Video image data is received by receiving unit module, is transferred in the control of ground after decoding by second interface group
The heart is played out in ground control centre.
A further improvement of the present invention is that the emitting module module includes synthetical baseband, transmitter and first antenna,
For the synthetical baseband for encoding compressed video image data, the transmitter is described for emitting video image data signal
Antenna is used for the transmission of video image data signal.
A further improvement of the present invention is that the receiving unit module include the second antenna and receiver, described second
Antenna is for receiving video image data signal, and the receiver is for extracting, depositing and decoding video image data.
As the preferred technical solution of the present invention, be embedded with decoding software in the receiver, to video image data into
Row is extracted, deposits and is decoded.When receiving unit module receives video image data, first passes around antenna and receive signal, In
By the decoding software embedded in receiver, image data is extracted, is deposited, decode etc. and operate.
A further improvement of the present invention is that being somebody's turn to do the video image transmission system based on microwave technology further includes data reception
Block, data memory module, data encoding decoder module and interface module, the data reception module are responsible for receiving front-end camera
The video image data of acquisition；The data encoding decoder module is responsible for extracting received video image data, decoding
It is operated with deposit；The interface module is responsible for data docking service；The data memory module be responsible for by treated data into
Row saves, and prevents from losing.It is developed using C language, is taken the photograph first with the tools carrying such as individual soldier's evidence taking equipment or unmanned plane, control vehicle
As head carries out video acquisition to field condition, then image data is encoded by sending assembly, is compressed, is interweaved etc. and being grasped
Make；Then modulated microwave technology is utilized, the image information of acquisition is carried on microwave, microwave is converted to and transmits in the sky.Most
Afterwards, receiving end receives signal, and the operation such as by embedded software extracts, deposit, decode to image information, and finally realization exists
Ground control centre plays real-time video.
As the preferred technical solution of the present invention, the interface group module includes first interface group module and second interface group
Module, the first interface group module are used for first interface group, and the second interface group module is used for second interface group；Described
One interface group and second interface group include at least one interface.
The prior art is compared, the invention has the advantages that:
1) method that should be passed based on the video figure of microwave technology uses microwave transmission, and wherein microwave transmission system is anti-improves
Original modulation technique, using coded orthogonal frequency division multiplexing technology, so that each subcarrier is mutually orthogonal and each subcarrier
Frequency spectrum has half overlapping, and can either save bandwidth again being capable of strengthen the system anti-interference ability；
2) in addition to being capable of providing good transmission conditions, the video compression technology by MPEG-4 improvement in system can
It realizes make compressed image be original image under the conditions of equal quality 1/10th, image can be substantially improved in network
In transmission rate.
Detailed description of the invention
Technical solution of the present invention is further described with reference to the accompanying drawing:
Fig. 1 is the flow diagram for the method that the video figure of the invention based on microwave technology passes；
Fig. 2 is video acquisition and transmitting process signal in the method that the video figure of the invention based on microwave technology passes
Figure；
Fig. 3 is video reception and decompression process signal in the method that the video figure of the invention based on microwave technology passes
Figure；
Fig. 4 is the hardware module frame diagram of the video image transmission system of the invention based on microwave technology；
Fig. 5 is the software module frame diagram of the video image transmission system of the invention based on microwave technology.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention is done below in conjunction with drawings and examples and is further retouched in detail
It states, the embodiment is only for explaining the present invention, does not constitute and limits to protection scope of the present invention.
Embodiment: as shown in Figures 1 to 3, the method that should be passed based on the video figure of microwave technology, comprising the following steps: (1) regard
Frequency acquires and transmitting:
S11: vehicle or/and unmanned plane are controlled using ground or/and individual combat equipment tool carries camera and carries out video
Image Acquisition；
S12: after video image acquisition, video image data is compressed by the synthetical baseband in transmitting terminal, is encoded,
Interweave；
S13: after being compressed, synthetical baseband will be completed to export the framing of transmission data and control hair video image
Signal is penetrated, intermediate frequency is modulated signals into using microwave technology, video is sent out；
(2) video reception and decompression:
S21: transmission of video images signal is received using receiving antenna；
S22: after the completion of receiving signal, receiver, which carries out deposit operation to video image data, prevents loss of data；
S23: after data are deposited, receiver will extract video image data；
S24: after video image data decompression, operation is decoded to image data using entropy decoding；
S25: it after video image decoding, can be shown in client.
The MPEG-4 Image Compression by improvement is used to video image data in the step S12, utilizes interframe
Compression, only storage contacts differentiated place between frame, increasing compression ratio.In microwave transmission, system, which uses to have already passed through, to be changed
Good MPEG-4 compression of images, coding techniques, using interframe compression, only differentiated place between storage connection frame, same
Making compressed image under quality requirements is 1/10th of original image, to reach biggish compression ratio, (maximum be can reach
The maximum compression ratio of 5000:1, script MPEG-4 are 4000:1), the Image Compression after improvement can will be substantially improved
The transmission rate of video in a network；The transmission rate of image in a network can be substantially improved.Solves video figure biography simultaneously
Be delayed too long, frame-skipping, transmission picture it is unintelligible the problems such as.
Microwave technology in the step S13 is coded orthogonal frequency division multiplexing technology.In image transmitting process, I
Utilize excellent algorithm so that each subcarrier is mutually orthogonal and the frequency spectrum of each subcarrier has half overlapping, utilize coding
Orthogonal frequency division multiplexer modulates signals into intermediate frequency, and enhances anti-interference ability, improves transmission range；And it can save
Bandwidth-saving.
As shown in figure 4, should video image transmission system based on microwave technology, including data acquisition module, emitting module module,
Receiving unit module and ground control centre, the data acquisition module are connected with the emitting module module and are formed unidirectional
Data transmission, the emitting module module and the receiving unit module form one-way data transfer；The receiving unit module
It is connected with the ground control centre and forms one-way data transfer；The data acquisition module passes through video image data
First interface group is transferred to emitting module module；The emitting module module issues video image data signal, video image
Data-signal receives video image data signal by microwave transmission, by the receiving unit module, then by receiving unit module
Ground control centre is transferred to by second interface group；The emitting module module includes synthetical baseband, transmitter and first day
Line, the synthetical baseband is for encoding compressed video image data, and the transmitter is for emitting video image data signal, institute
State transmission of the antenna for video image data signal；The receiving unit module includes the second antenna and receiver, and described the
Two antennas are for receiving video image data signal, and the receiver is for extracting, depositing and decoding video image data；It is described
It is embedded with decoding software in receiver, video image data is extracted, deposit and is decoded；When receiving unit module receives
When video image data, first pass around antenna and receive signal, in the decoding software by embedding in receiver, to image data into
The operations such as row extraction, deposit, decoding；As shown in figure 5, being somebody's turn to do the video image transmission system based on microwave technology further includes data reception
Block, data memory module, data encoding decoder module and interface module, the data reception module are responsible for receiving front-end camera
The video image data of acquisition；The data encoding decoder module is responsible for extracting received video image data, decoding
It is operated with deposit；The interface module is responsible for data docking service；The data memory module be responsible for by treated data into
Row saves, and prevents from losing；The interface group module includes first interface group module and second interface group module, the first interface
Group module is used for first interface group, and the second interface group module is used for second interface group；The first interface group and second connects
Mouth group includes an interface.
The video image transmission system based on microwave technology using C language develop, first with individual soldier's evidence taking equipment or nobody
Machine, control vehicle etc. tools carry camera and carry out video acquisition to field condition, then by sending assembly to image data into
The operations such as row coding, compression, intertexture；Then modulated microwave technology is utilized, the image information of acquisition is carried on microwave, is converted
It is transmitted in the sky for microwave.Finally, receiving end receives signal, and image information is extracted by embedded software, deposits, solve
The operation such as code, final realize play real-time video in ground control centre.
For the ordinary skill in the art, specific embodiment is only exemplarily described the present invention,
Obviously the present invention specific implementation is not subject to the restrictions described above, as long as use the inventive concept and technical scheme of the present invention into
The improvement of capable various unsubstantialities, or not improved the conception and technical scheme of the invention are directly applied to other occasions
, it is within the scope of the present invention.
Claims (2)
1. a kind of method that the video figure based on microwave technology passes comprising the video image transmission system based on microwave technology, it is described
Video image transmission system includes data acquisition module, emitting module module, receiving unit module and ground control centre, the data
Acquisition module is connected with the emitting module module and forms one-way data transfer, the emitting module module and the reception
Assembly module forms one-way data transfer；The receiving unit module is connected with the ground control centre and forms unidirectional number
According to transmission；Video image data is transferred to emitting module module by first interface group by the data acquisition module；The hair
It penetrates assembly module to issue video image data signal, video image data signal is by microwave transmission, by the receiving unit
Module receives video image data signal, then is transferred to ground control centre by second interface group by receiving unit module；Institute
Stating emitting module module includes synthetical baseband, transmitter and first antenna, and the synthetical baseband is for encoding compressed video image
Data, the transmitter are used for the transmission of video image data signal for emitting video image data signal, the antenna；Institute
Stating receiving unit module includes the second antenna and receiver, and second antenna is described for receiving video image data signal
Receiver is for extracting, depositing and decoding video image data；It is embedded with decoding software in the receiver, to video image number
According to extracting, deposit and decode；The video image transmission system based on microwave technology further includes data reception module, data storage
Module, data encoding decoder module and interface group module, the data reception module are responsible for the view of receiving front-end camera acquisition
Frequency image data；The data encoding decoder module is responsible for behaviour that received video image data is extracted, decodes and deposited
Make；The interface group module is responsible for data docking service；The data memory module is responsible for that data save by treated,
It prevents from losing；It is characterized in that, the method that the video figure passes the following steps are included:
(1) video acquisition and transmitting:
S11: vehicle or/and unmanned plane are controlled using ground or/and individual combat equipment tool carries camera and carries out video image
Acquisition；
S12: after video image acquisition, video image data is compressed by the synthetical baseband in transmitting terminal, encoded, is handed over
It knits；
S13: after being compressed, synthetical baseband will be completed to export the framing of transmission data and control transmitting letter video image
Number, intermediate frequency is modulated signals into using microwave technology, video is sent out；
(2) video reception and decompression:
S21: transmission of video images signal is received using receiving antenna；
S22: after the completion of receiving signal, receiver, which carries out deposit operation to video image data, prevents loss of data；
S23: after data are deposited, receiver will extract video image data；
S24: after video image data decompression, operation is decoded to image data using entropy decoding；
The MPEG-4 Image Compression by improvement is used to video image data in the step S12, using interframe compression,
Only store differentiated place between successive frame, increasing compression ratio；
Microwave technology in the step S13 is coded orthogonal frequency division multiplexing technology；
Further include S25 in the step (2): after video image decoding, can be shown in client.
2. the method according to claim 1, wherein wherein interface group module described in the video image transmission system
Including first interface group module and second interface group module, the first interface group module be used for first interface group, described second
Interface group module is used for second interface group；The first interface group and second interface group include at least one interface.
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| CN111757047A (en) * | 2019-03-29 | 2020-10-09 | 无锡人人行拍网络科技有限公司 | Transit machine high definition digital image transmission system transmitting terminal |
| CN116781870B (en) * | 2023-08-23 | 2024-05-31 | 北京大业桥科技股份有限公司 | Remote microwave monitoring method and system |
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| CN201123071Y (en) * | 2007-11-13 | 2008-09-24 | 南京中网通信有限公司 | Image transmission device based on satellite emergency communication |
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Address after: 210042 8 Blocks 699-22 Xuanwu Avenue, Xuanwu District, Nanjing City, Jiangsu Province Patentee after: Speed Technology Co.,Ltd. Address before: 210000 8 -22, 699 Xuanwu Road, Xuanwu District, Nanjing, Jiangsu. Patentee before: SPEED TIME AND SPACE INFORMATION TECHNOLOGY Co.,Ltd. |