CN109639611A - A kind of ultrashort wave multimode over the horizon modem, method and communication equipment - Google Patents
A kind of ultrashort wave multimode over the horizon modem, method and communication equipment Download PDFInfo
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Abstract
The invention discloses a kind of ultrashort wave multimode over the horizon modem, method and communication equipments, belong to field of communication technology.Modem of the present invention includes FPGA, and FPGA is for realizing link control module, modulator, pattern recognition module and demodulator.The present invention can make full use of a variety of channel resources, make up the weak area of meteoric trail communication short-range communication, can be applied in 0~2000km multimode adaptive wireless communication system.
Description
Technical field
The present invention relates to field of communication technology, particularly relate to a kind of ultrashort wave multimode over the horizon modem, method and
Communication equipment can be applied in 0~2000km multimode adaptive wireless communication system.
Background technique
Since finding radio propagation mechanism, rapid, face covering has been set up since ultrashort wave frequency band communication equipment has
The characteristics of characteristic and equipment cost relative moderate so that the wireless communication of the frequency range no matter in military or civil field be all
The hot spot of research.The beginning of this century, foreign countries recognize using mechanism of transmission other present on meteor burst links, such as Es layers
With Tropo mode etc., Multi-Dimensional Extension is realized in terms of system operating frequency, transmission capacity, type of business, communication,
It can be for used in the wireless line communication of over the horizon.
Up to the present, foreign countries have the research of the communication resources such as the compatible meteoric trail of same VHF equipment platform, diffraction at
Fruit, not only can short-range communication in 100km, but also can the above telecommunication of several hundred kilometers.
The country is also merely resting under single communication system at present, and usually only tens kilometers of distance of VHF station telecommunication, stream
Star trail communication system general coverage distance about 600 ~ 2000km, every kind of communication mode all have certain limitation.
As it can be seen that there are no a kind of platforms can be compatible with a variety of channel resources in the prior art.
Summary of the invention
In view of this, the present invention proposes a kind of ultrashort wave multimode over the horizon modem, method and communication equipment, tool
The characteristics of there are many channelling mode automatic identification technologies, channel self-adapting can make full use of a variety of channel resources, improve information
Transmission availability.
To achieve the goals above, the technical solution used in the present invention are as follows:
A kind of ultrashort wave multimode over the horizon modem comprising FPGA, the FPGA are for realizing link control module, tune
Device, pattern recognition module and demodulator processed, in which:
Link control module, for receive the external business datum sent, pattern recognition module output channel identification information and
The solution adjusting data of demodulator output taps out opposite end business datum and opposite end channel identification information from solution adjusting data, according to industry
Data of being engaged in and opposite end channel identification information carry out link communication statistics, true according to channel identification information and link communication statistical information
Determine channelling mode, channelling mode is then transmitted to modulator and demodulator respectively, and by business datum, channel identification information multiple connection
After send to modulator, meanwhile, opposite end business datum is sent to external business；
Modulator, preset more modulation system, the channelling mode for being transmitted according to link control module select multiple connection information
Different modulation systems is sent out after being modulated；
Pattern recognition module, the reception signal for sending to demodulator carry out Channel Detection, signal-to-noise ratio (SNR) estimation are completed, by one section
The maximum changing amplitude of signal-to-noise ratio (SNR) estimation value and these signal-to-noise ratio (SNR) estimation values in time is compared with preset value, judges letter
Road identification information, and channel identification information is transmitted to link control module；
Demodulator, the channelling mode for being transmitted according to link control module select different demodulation systems, connect to what outside was sent
The collection of letters number is demodulated, and gives solution adjusting data to link control module, while being output to pattern recognition module for signal is received.
Specifically, the link control module includes following submodule:
Data cache module is sent, for receiving the external business datum sent and being cached；
Data multiplexing module, for carrying out the channel identification information of business datum and pattern recognition module output at multiple connection framing
Reason, and the data frame obtained after multiple connection framing processing is sent into modulator；
Data tapping module, the solution adjusting data for exporting to demodulator carry out tap processing, tap out opposite end business datum and
Opposite end channel identification information, and by opposite end business datum send to receive data cache module, by opposite end channel identification information send to
Link statistics module；
Data cache module is received, the opposite end business datum that Demultiplexing module is sent for receiving data is simultaneously cached；
Link statistics module, opposite end channel identification information and transmission data buffer storage mould for being sent according to data tapping module
The business datum that block is sent carries out link communication statistics, and statistical result is sent to mode control module；
Mode control module, the channel identification information for being sent according to link communication statistical result and pattern recognition module are sentenced
Disconnected channelling mode；Concrete mode are as follows: communication duration is counted according to link communication statistical result, if communicating in statistical time
Duration duty ratio is greater than preset threshold, then tentatively judges channelling mode for continuous channel, if duty ratio is less than the default threshold
Value, then tentatively judge that the result tentatively judged for Burst Channel, is then compared by channelling mode with channel identification information, if
Unanimously, then using preliminary judging result as final result, if inconsistent, channelling mode is judged as Burst Channel.
Specifically, the pattern recognition module includes following submodule:
Channel detection module, the reception signal for sending to demodulator carry out detection processing, rectified signal are sent to signal-to-noise ratio
Estimation module；
Signal-to-noise ratio (SNR) estimation module for carrying out signal-to-noise ratio (SNR) estimation according to rectified signal, and signal-to-noise ratio (SNR) estimation value is sent to judging mould
Block；
Then judgment module is known channelling mode for carrying out average smooth to the signal-to-noise ratio (SNR) estimation value in a period of time
Not；When signal-to-noise ratio (SNR) estimation value is persistently greater than the first preset value, and maximum changing amplitude is less than the second preset value, channel identification knot
Fruit is continuous mode；When the signal-to-noise ratio (SNR) estimation value more than 2/3 is lower than the first preset value, it is default that maximum changing amplitude is greater than second
Value, and variation pattern exponentially form when, channel identification result be Burst Channel mode.
A kind of ultrashort wave multimode over the horizon modulation-demo-demodulation method comprising following steps:
(1) it receives the external business datum sent and receives signal；
(2) opposite end business datum and opposite end channel identification information are tapped out from the solution adjusting data that step (7) obtains, according to described
Business datum and opposite end channel identification information carry out link communication statistics, and opposite end business datum is sent to external business；
(3) the link communication statistical information that the channel identification information and step (2) obtained according to step (6) obtains determines channel mould
Formula；
(4) channel identification information for obtaining the business datum and step (6) carries out multiple connection, obtains multiple connection information；
(5) according to step (3) determine channelling mode, by the multiple connection information that step (4) obtains select different modulation systems into
It is sent out after row modulation；
(6) to the reception signal carry out Channel Detection, complete signal-to-noise ratio (SNR) estimation, by a period of time signal-to-noise ratio (SNR) estimation value and
The maximum changing amplitude of these signal-to-noise ratio (SNR) estimation values is compared with preset value, judges channel identification information；
(7) different demodulation systems is selected according to the channelling mode that step (3) determine, to solve to the reception signal
It adjusts, obtains solution adjusting data.
Specifically, the concrete mode of the step (3) are as follows:
(301) communication duration is counted according to link communication statistical information；
(302) if communication duration duty ratio is greater than preset threshold in statistical time, judge channelling mode tentatively to connect
Continuous channel tentatively judges channelling mode for Burst Channel if duty ratio is less than the preset threshold；
(303) judging result of step (302) is compared with channel identification information, if judgement is consistent, with step (302)
Judgement be final judgement, otherwise, judge channelling mode for Burst Channel.
Specifically, the concrete mode of the step (6) are as follows:
(601) detection processing is carried out to the reception signal, obtains rectified signal；
(602) signal-to-noise ratio (SNR) estimation is carried out according to rectified signal, obtains signal-to-noise ratio (SNR) estimation value；
(603) average smooth is carried out to the signal-to-noise ratio (SNR) estimation value in a period of time, then channelling mode is identified；Work as noise
Compared estimate value is persistently greater than the first preset value, and when maximum changing amplitude is less than the second preset value, channel identification result is continuous
Mode；When the signal-to-noise ratio (SNR) estimation value more than 2/3 is lower than the first preset value, maximum changing amplitude is greater than the second preset value, and changes
Mode exponentially form when, channel identification result be Burst Channel mode.
A kind of adaptive beyond-the-horizon communication equipment of ultrashort wave multimode, which is characterized in that including antenna, sender, power amplifier, receipts
Hair switch, receiver and ultrashort wave multimode over the horizon modem as described in claim 1；
When data are sent, the business datum that outside is sent controls mould in the link of the ultrashort wave multimode over the horizon modem
Multiple connection is carried out with channel identification information in block, is then sent in the modulator of ultrashort wave multimode over the horizon modem and is adjusted
System, modulated information carries out upconversion process through sender, then is sent in the form of radiofrequency signal after power amplifier, transmit-receive switch
Antenna is emitted；
When data receiver, received radiofrequency signal after transmit-receive switch, is sent to receiver and carries out down-converted, then sent by antenna
It is demodulated into the demodulator of the ultrashort wave multimode over the horizon modem, solution adjusting data is sent to the ultrashort wave multimode
It is tapped in the link control module of over the horizon modem, so that opposite end business datum be exported；
During data transmit-receive, antenna received signal is output to the mode of the ultrashort wave multimode over the horizon modem
Pattern-recognition is carried out in identification module, link control module carries out link communication according to business datum and opposite end channel identification information
Statistics, and channelling mode is determined according to channel identification information and link communication statistical information, then channelling mode is transmitted to respectively
Modulator and demodulator controls the modulation system and demodulation system of modulator and demodulator.
It has the advantages that compared with the background technology, the present invention
1, the present invention is able to achieve a variety of channelling mode automatic identifications.
2, the present invention can be realized a variety of channelling mode adaptive communications in 0~2000km communication distance.
3, communication performance of the present invention is not less than single Modular Communications System.
4, the present invention is integrated with various modes modulation-demo-demodulation method, but volume obtains compared with traditional modem
Control well, realizes communication equipment lighting and miniaturization.
In short, the present invention can make full use of a variety of channel resources, the weak area of meteoric trail communication short-range communication is made up, is had
There is good application prospect.
Detailed description of the invention
Fig. 1 is a kind of electric functional block diagram of ultrashort wave multimode over the horizon modem in the embodiment of the present invention.
Fig. 2 is a kind of electric functional block diagram of link control module in Fig. 1.
Fig. 3 is a kind of electric functional block diagram of pattern recognition module in Fig. 1.
Fig. 4 is a kind of electric functional block diagram of the adaptive beyond-the-horizon communication equipment of ultrashort wave multimode in the embodiment of the present invention.
In Fig. 1~4, A, B signal interface connecting link control module business output and input, C interface connect radio frequency it is defeated
Enter, D interface connects radio frequency output, and the E interface of link control module connects modulator, F interface respectively with modulator and demodulator
It is connected, the G interface connecting link control module of demodulator, the H interface connecting link control module of pattern recognition module, demodulator
J interface connection mode identification module.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
A kind of ultrashort wave multimode over the horizon modem comprising FPGA, the FPGA control mould for realizing link
Block, modulator, pattern recognition module and demodulator, in which:
Link control module, for receive the external business datum sent, pattern recognition module output channel identification information and
The solution adjusting data of demodulator output taps out opposite end business datum and opposite end channel identification information from solution adjusting data, according to industry
Data of being engaged in and opposite end channel identification information carry out link communication statistics, true according to channel identification information and link communication statistical information
Determine channelling mode, channelling mode is then transmitted to modulator and demodulator respectively, and by business datum, channel identification information multiple connection
After send to modulator, meanwhile, opposite end business datum is sent to external business；
Modulator, preset more modulation system, the channelling mode for being transmitted according to link control module select multiple connection information
Different modulation systems is sent out after being modulated；
Pattern recognition module, the reception signal for sending to demodulator carry out Channel Detection, signal-to-noise ratio (SNR) estimation are completed, by one section
The maximum changing amplitude of signal-to-noise ratio (SNR) estimation value and these signal-to-noise ratio (SNR) estimation values in time is compared with preset value, judges letter
Road identification information, and channel identification information is transmitted to link control module；
Demodulator, the channelling mode for being transmitted according to link control module select different demodulation systems, connect to what outside was sent
The collection of letters number is demodulated, and gives solution adjusting data to link control module, while being output to pattern recognition module for signal is received.
Specifically, the link control module includes following submodule:
Data cache module is sent, for receiving the external business datum sent and being cached；
Data multiplexing module, for carrying out the channel identification information of business datum and pattern recognition module output at multiple connection framing
Reason, and the data frame obtained after multiple connection framing processing is sent into modulator；
Data tapping module, the solution adjusting data for exporting to demodulator carry out tap processing, tap out opposite end business datum and
Opposite end channel identification information, and by opposite end business datum send to receive data cache module, by opposite end channel identification information send to
Link statistics module；
Data cache module is received, the opposite end business datum that Demultiplexing module is sent for receiving data is simultaneously cached；
Link statistics module, opposite end channel identification information and transmission data buffer storage mould for being sent according to data tapping module
The business datum that block is sent carries out link communication statistics, and statistical result is sent to mode control module；
Mode control module, the channel identification information for being sent according to link communication statistical result and pattern recognition module are sentenced
Disconnected channelling mode；Concrete mode are as follows: communication duration is counted according to link communication statistical result, if communicating in statistical time
Duration duty ratio is greater than preset threshold, then judges channelling mode tentatively for continuous channel, such as Es layers and Tropo channel, if
Duty ratio is less than the preset threshold, then tentatively judges channelling mode for Burst Channel, such as meteor trail channel then will tentatively be sentenced
Disconnected result is compared with channel identification information, if unanimously, using preliminary judging result as final result, if inconsistent,
Channelling mode is judged as Burst Channel, which can determine that this is this according to the characteristic of channel and communication feature of grasp
The common knowledge of field technical staff, details are not described herein again.
Specifically, the pattern recognition module includes following submodule:
Channel detection module, the reception signal for sending to demodulator carry out detection processing, rectified signal are sent to signal-to-noise ratio
Estimation module；
Signal-to-noise ratio (SNR) estimation module for carrying out signal-to-noise ratio (SNR) estimation according to rectified signal, and signal-to-noise ratio (SNR) estimation value is sent to judging mould
Block；
Then judgment module is known channelling mode for carrying out average smooth to the signal-to-noise ratio (SNR) estimation value in a period of time
Not；When signal-to-noise ratio (SNR) estimation value is persistently greater than the first preset value, and maximum changing amplitude is less than the second preset value, channel identification knot
Fruit is continuous mode；When the signal-to-noise ratio (SNR) estimation value more than 2/3 is lower than the first preset value, it is default that maximum changing amplitude is greater than second
Value, and variation pattern exponentially form when, channel identification result be Burst Channel mode.
Specifically, referring to Fig.1, a kind of ultrashort wave multimode over the horizon modem comprising link control module, tune
Device, pattern recognition module and demodulator processed.
Referring to Fig. 2, the effect of above-mentioned link control module is that received service signal is sent into data cache module, number
Data multiplexing module will be sent into after data buffer storage according to cache module, data multiplexing module is sent after data are carried out multiple connection to modulation
Device send to data tapping module the information that demodulator is sent after tapping, and sends out after sending to data cache module caching, together
When will transmitting-receiving signal intelligence send into link statistics module carry out link communication statistics, by statistical result even and channelling mode identify
As a result it send together into mode control module, mode control module counts link communication and channelling mode recognition result carries out
United analysis, a kind of channelling mode for being suitble to transmit at this stage of automatic analysis and judgment, and it is suitable to control modulator and demodulator load
The waveform for closing channel at this stage is transmitted.
Referring to Fig. 3, the effect of above-mentioned pattern recognition module is to send reception signal to channel detection module to carry out signal inspection
Wave processing, is then sent in signal-to-noise ratio (SNR) estimation module and carries out signal-to-noise ratio (SNR) estimation, signal-to-noise ratio (SNR) estimation value is sent to judging unit module
Inside judged, judgment module analyzes and determines the signal-to-noise ratio for receiving signal according to preset value, according to connecing for present channel
Collection of letters state of signal-to-noise judges current channelling mode, and result is exported to link control module.
A kind of ultrashort wave multimode over the horizon modulation-demo-demodulation method comprising following steps:
(1) it receives the external business datum sent and receives signal；
(2) opposite end business datum and opposite end channel identification information are tapped out from the solution adjusting data that step (7) obtains, according to described
Business datum and opposite end channel identification information carry out link communication statistics, and opposite end business datum is sent to external business；
(3) the link communication statistical information that the channel identification information and step (2) obtained according to step (6) obtains determines channel mould
Formula；
(4) channel identification information for obtaining the business datum and step (6) carries out multiple connection, obtains multiple connection information；
(5) according to step (3) determine channelling mode, by the multiple connection information that step (4) obtains select different modulation systems into
It is sent out after row modulation；
(6) to the reception signal carry out Channel Detection, complete signal-to-noise ratio (SNR) estimation, by a period of time signal-to-noise ratio (SNR) estimation value and
The maximum changing amplitude of these signal-to-noise ratio (SNR) estimation values is compared with preset value, judges channel identification information；
(7) different demodulation systems is selected according to the channelling mode that step (3) determine, to solve to the reception signal
It adjusts, obtains solution adjusting data.
Specifically, the concrete mode of the step (3) are as follows:
(301) communication duration is counted according to link communication statistical information；
(302) if communication duration duty ratio is greater than preset threshold in statistical time, judge channelling mode tentatively to connect
Continuous channel tentatively judges channelling mode for Burst Channel if duty ratio is less than the preset threshold；
(303) judging result of step (302) is compared with channel identification information, if judgement is consistent, with step (302)
Judgement be final judgement, otherwise, judge channelling mode for Burst Channel.
Specifically, the concrete mode of the step (6) are as follows:
(601) detection processing is carried out to the reception signal, obtains rectified signal；
(602) signal-to-noise ratio (SNR) estimation is carried out according to rectified signal, obtains signal-to-noise ratio (SNR) estimation value；
(603) average smooth is carried out to the signal-to-noise ratio (SNR) estimation value in a period of time, then channelling mode is identified；Work as noise
Compared estimate value is persistently greater than the first preset value, and when maximum changing amplitude is less than the second preset value, channel identification result is continuous
Mode；When the signal-to-noise ratio (SNR) estimation value more than 2/3 is lower than the first preset value, maximum changing amplitude is greater than the second preset value, and changes
Mode exponentially form when, channel identification result be Burst Channel mode.
The complete adaptive beyond-the-horizon communication equipment of ultrashort wave multimode shown in Fig. 4 comprising antenna, sender,
Power amplifier, transmit-receive switch, receiver and ultrashort wave multimode over the horizon modem as described above；
When data are sent, the business datum that outside is sent carries out multiple connection with channel identification information in link control module, then
Send and be modulated into modulator, modulated information carries out upconversion process through sender, then after power amplifier, transmit-receive switch with
Radiofrequency signal form is sent to antenna and is emitted；
When data receiver, received radiofrequency signal after transmit-receive switch, is sent to receiver and carries out down-converted, then sent by antenna
It is demodulated into demodulator, solution adjusting data is sent to be tapped into link control module, so that opposite end business datum be carried out
Output；
During data transmit-receive, antenna received signal, which is output in pattern recognition module, carries out pattern-recognition, link control
Module carries out link communication statistics according to business datum and opposite end channel identification information, and logical according to channel identification information and link
Letter statistical information determines channelling mode, and channelling mode is then transmitted to modulator and demodulator respectively, controls modulator and demodulation
The modulation system and demodulation system of device.
The brief working principle of the present invention is as follows: link control module caches business datum and subdivision connects, according to letter
Road pattern-recognition and link communication statistics control channelling mode, and control modulator and demodulator selects different waveforms
It is modulated demodulation, pattern recognition module mainly carries out Channel Detection and signal-to-noise ratio (SNR) estimation to receiving signal, and by channelling mode
Recognition result informs link control module；Modulator loaded automatically according to link control mode corresponding waveform to multiplexing data into
Row modulation；Demodulator selects corresponding demodulation system to be demodulated according to link control mode.
In short, the troposphere atmospheric duct that the present invention has been compatible with meteoric trail on same ultrashort wave frequency band platform, has taken place frequently
With a variety of channel resources such as the tropospheric scatter that lives forever, the weak area of meteoric trail short-range communication is compensated for, both can use diffraction
It ensures that the information within the scope of 300km continuously transmits with tropospheric scatter channel resource, and increases average information percent of pass；It again can be with
By comprehensively utilizing tropospheric scatter, meteoric trail, a variety of channel resources of troposphere atmospheric duct, ensure that several hundred kilometers or more is remote
Distance communication.
Claims (7)
1. a kind of ultrashort wave multimode over the horizon modem, which is characterized in that including FPGA, the FPGA is for realizing link
Control module, modulator, pattern recognition module and demodulator, in which:
Link control module, for receive the external business datum sent, pattern recognition module output channel identification information and
The solution adjusting data of demodulator output taps out opposite end business datum and opposite end channel identification information from solution adjusting data, according to industry
Data of being engaged in and opposite end channel identification information carry out link communication statistics, true according to channel identification information and link communication statistical information
Determine channelling mode, channelling mode is then transmitted to modulator and demodulator respectively, and by business datum, channel identification information multiple connection
After send to modulator, meanwhile, opposite end business datum is sent to external business；
Modulator, preset more modulation system, the channelling mode for being transmitted according to link control module select multiple connection information
Different modulation systems is sent out after being modulated；
Pattern recognition module, the reception signal for sending to demodulator carry out Channel Detection, signal-to-noise ratio (SNR) estimation are completed, by one section
The maximum changing amplitude of signal-to-noise ratio (SNR) estimation value and these signal-to-noise ratio (SNR) estimation values in time is compared with preset value, judges letter
Road identification information, and channel identification information is transmitted to link control module；
Demodulator, the channelling mode for being transmitted according to link control module select different demodulation systems, connect to what outside was sent
The collection of letters number is demodulated, and gives solution adjusting data to link control module, while being output to pattern recognition module for signal is received.
2. a kind of ultrashort wave multimode over the horizon modem according to claim 1, which is characterized in that the link control
Molding block includes following submodule:
Data cache module is sent, for receiving the external business datum sent and being cached；
Data multiplexing module, for carrying out the channel identification information of business datum and pattern recognition module output at multiple connection framing
Reason, and the data frame obtained after multiple connection framing processing is sent into modulator；
Data tapping module, the solution adjusting data for exporting to demodulator carry out tap processing, tap out opposite end business datum and
Opposite end channel identification information, and by opposite end business datum send to receive data cache module, by opposite end channel identification information send to
Link statistics module；
Data cache module is received, the opposite end business datum that Demultiplexing module is sent for receiving data is simultaneously cached；
Link statistics module, opposite end channel identification information and transmission data buffer storage mould for being sent according to data tapping module
The business datum that block is sent carries out link communication statistics, and statistical result is sent to mode control module；
Mode control module, the channel identification information for being sent according to link communication statistical result and pattern recognition module are sentenced
Disconnected channelling mode；Concrete mode are as follows: communication duration is counted according to link communication statistical result, if communicating in statistical time
Duration duty ratio is greater than preset threshold, then tentatively judges channelling mode for continuous channel, if duty ratio is less than the default threshold
Value, then tentatively judge that the result tentatively judged for Burst Channel, is then compared by channelling mode with channel identification information, if
Unanimously, then using preliminary judging result as final result, if inconsistent, channelling mode is judged as Burst Channel.
3. a kind of ultrashort wave multimode over the horizon modem according to claim 1, which is characterized in that the mode is known
Other module includes following submodule:
Channel detection module, the reception signal for sending to demodulator carry out detection processing, rectified signal are sent to signal-to-noise ratio
Estimation module；
Signal-to-noise ratio (SNR) estimation module for carrying out signal-to-noise ratio (SNR) estimation according to rectified signal, and signal-to-noise ratio (SNR) estimation value is sent to judging mould
Block；
Then judgment module is known channelling mode for carrying out average smooth to the signal-to-noise ratio (SNR) estimation value in a period of time
Not；When signal-to-noise ratio (SNR) estimation value is persistently greater than the first preset value, and maximum changing amplitude is less than the second preset value, channel identification knot
Fruit is continuous mode；When the signal-to-noise ratio (SNR) estimation value more than 2/3 is lower than the first preset value, it is default that maximum changing amplitude is greater than second
Value, and variation pattern exponentially form when, channel identification result be Burst Channel mode.
4. a kind of ultrashort wave multimode over the horizon modulation-demo-demodulation method, which comprises the following steps:
(1) it receives the external business datum sent and receives signal；
(2) opposite end business datum and opposite end channel identification information are tapped out from the solution adjusting data that step (7) obtains, according to described
Business datum and opposite end channel identification information carry out link communication statistics, and opposite end business datum is sent to external business；
(3) the link communication statistical information that the channel identification information and step (2) obtained according to step (6) obtains determines channel mould
Formula；
(4) channel identification information for obtaining the business datum and step (6) carries out multiple connection, obtains multiple connection information；
(5) according to step (3) determine channelling mode, by the multiple connection information that step (4) obtains select different modulation systems into
It is sent out after row modulation；
(6) to the reception signal carry out Channel Detection, complete signal-to-noise ratio (SNR) estimation, by a period of time signal-to-noise ratio (SNR) estimation value and
The maximum changing amplitude of these signal-to-noise ratio (SNR) estimation values is compared with preset value, judges channel identification information；
(7) different demodulation systems is selected according to the channelling mode that step (3) determine, to solve to the reception signal
It adjusts, obtains solution adjusting data.
5. a kind of ultrashort wave multimode over the horizon modulation-demo-demodulation method according to claim 4, which is characterized in that the step
(3) concrete mode are as follows:
(301) communication duration is counted according to link communication statistical information；
(302) if communication duration duty ratio is greater than preset threshold in statistical time, judge channelling mode tentatively to connect
Continuous channel tentatively judges channelling mode for Burst Channel if duty ratio is less than the preset threshold；
(303) judging result of step (302) is compared with channel identification information, if judgement is consistent, with step (302)
Judgement be final judgement, otherwise, judge channelling mode for Burst Channel.
6. a kind of ultrashort wave multimode over the horizon modulation-demo-demodulation method according to claim 4, which is characterized in that the step
(6) concrete mode are as follows:
(601) detection processing is carried out to the reception signal, obtains rectified signal；
(602) signal-to-noise ratio (SNR) estimation is carried out according to rectified signal, obtains signal-to-noise ratio (SNR) estimation value；
(603) average smooth is carried out to the signal-to-noise ratio (SNR) estimation value in a period of time, then channelling mode is identified；Work as noise
Compared estimate value is persistently greater than the first preset value, and when maximum changing amplitude is less than the second preset value, channel identification result is continuous
Mode；When the signal-to-noise ratio (SNR) estimation value more than 2/3 is lower than the first preset value, maximum changing amplitude is greater than the second preset value, and changes
Mode exponentially form when, channel identification result be Burst Channel mode.
7. a kind of adaptive beyond-the-horizon communication equipment of ultrashort wave multimode, which is characterized in that including antenna, sender, power amplifier, transmitting-receiving
Switch, receiver and ultrashort wave multimode over the horizon modem as described in claim 1；
When data are sent, the business datum that outside is sent controls mould in the link of the ultrashort wave multimode over the horizon modem
Multiple connection is carried out with channel identification information in block, is then sent in the modulator of ultrashort wave multimode over the horizon modem and is adjusted
System, modulated information carries out upconversion process through sender, then is sent in the form of radiofrequency signal after power amplifier, transmit-receive switch
Antenna is emitted；
When data receiver, received radiofrequency signal after transmit-receive switch, is sent to receiver and carries out down-converted, then sent by antenna
It is demodulated into the demodulator of the ultrashort wave multimode over the horizon modem, solution adjusting data is sent to the ultrashort wave multimode
It is tapped in the link control module of over the horizon modem, so that opposite end business datum be exported；
During data transmit-receive, antenna received signal is output to the mode of the ultrashort wave multimode over the horizon modem
Pattern-recognition is carried out in identification module, link control module carries out link communication according to business datum and opposite end channel identification information
Statistics, and channelling mode is determined according to channel identification information and link communication statistical information, then channelling mode is transmitted to respectively
Modulator and demodulator controls the modulation system and demodulation system of modulator and demodulator.
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