CN109347498A - Vhf radio station interference cancellation device - Google Patents
Vhf radio station interference cancellation device Download PDFInfo
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- CN109347498A CN109347498A CN201811155077.0A CN201811155077A CN109347498A CN 109347498 A CN109347498 A CN 109347498A CN 201811155077 A CN201811155077 A CN 201811155077A CN 109347498 A CN109347498 A CN 109347498A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
- H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
- H04B2001/1045—Adjacent-channel interference
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
Abstract
The present invention provides a kind of vhf radio station interference cancellation devices, including transmitting-receiving switching module, disturbed sampling module, interference cancellation module, synthesis and feedback module and control module；The input terminal of transmitting-receiving switching module is connected with antenna and radio station.The input terminal of control module receives radio station receiving and transmitting signal, for monitoring the reiving/transmitting state in radio station in real time；The transmitting-receiving switching module is instructed according to the VHF radio reiving/transmitting state that control module provides, and when radio station emits and receives, is respectively concatenated disturbed sampling module and synthesis between radio station and antenna with feedback module, and disturbed sampling and interference cancellation are used for；The disturbed sampling module is used to be sampled radio station transmitting signal；The interference cancellation module offsets signal for generating radio frequency；The synthesis is used for cumulative interference signal and offsets signal and be sampled to the error signal after synthesis with feedback module.The present invention is to eliminate the interference of the adjacent channel between multi-section vhf radio station and receiver intermodulation interference.
Description
Technical field
The invention belongs to circuit designs and device level technical field of electromagnetic compatibility, and in particular to a kind of vhf radio station
Interference cancellation device.
Background technique
Very high frequency electromagnetic wave signal has the rectilinear propagation properties similar to light wave, and stability is high, is influenced by external condition
It is smaller.Vhf radio station mainly applies in radio and television, military affairs and modern Aviation field.Especially in aviation and military affairs
Field, it is high to the real time communication performance requirement of VHF radio.In airdrome control, VHF radio is mainly used for aircraft and exists
It can keep in touch constantly between ground in flight course, to realize airdrome control.Control tower is very high with landing aircraft
Frequency communication is disturbed or broken the normal flight order that may jeopardize flight, or even causes major accident.It is very high in military field
Frequency radio station is usually used in the horizon communication between each mobile operation platform (such as naval vessels, battlebus), it can be achieved that speech, data and image etc.
The transmission of information.Especially in the small-sized movables optimal in structure such as battlebus, VHF radio is its main, even unique communication
Means.It is therefore desirable to which multi-section VHF radio can work at the same time, to realize the upload at any time and reception of wartime information.
VHF radio generallys use semiduplex form work, and a VHF radio is both emission source and receives
Machine.In the occasion that above-mentioned VHF radio intensively uses, when multi-section VHF radio works at the same time, VHF communication adjacent channel
Interference, receiver intermodulation interference are serious, will cause the case where communication quality declines, even signal of communication thoroughly interrupts.Traditional
Electromagnetic interference control strategy belongs to passive disturbance restraining method, it is main by transmission channel inhibition, space separation, frequency partition,
Electromagnetic interference is avoided in the methods of time-division.It is corresponding to it, the main method of interference problem is between solution VHF radio at present
Widen the administrative controls such as antenna spacing and frequency dividing timesharing.In the case where limited space, it is limited to widen antenna distance effect；
And dividing the control measure such as timesharing then influences to actually use, and easily causes signal to fail to report leakage and receives.
Adaptive radiation interference cancellation techniques are the effective technical way of interference problem between solving above-mentioned VHF radio.From
The correlation that interference cancellation device utilizes interference signal and reference signal is adapted to, adaptive tracing and can be filtered out into receiver
One multiple adjacent channel interference signal, can also be with cancellation receiver Intermodulation Interference.Existing VHF radio is largely using transmitting-receiving
Antenna is with the form of mouth, therefore a radio station is both interference source and sensitive equipment.When using radio frequency compensation device, both needed
Disturbed sampling is carried out at antenna and radio interface, it is also necessary to carry out offseting signal injection.Existing Chinese patent ultrashort wave electromagnetism
Interference cancellation device (application number 201010198092.0), a kind of multichannel interference cancellation device (application number
201518001239.6), co-located coupled interference compensation device (application number 201518001240.9), adaptive wideband interference cancellation
Device (application number 201320001505.0), a kind of adaptive interference cancellation device and its adjustment method (application number
Etc. 201110223502.7) disturbed sampling in and to offset signal injection part be to be serially connected in transmitting antenna respectively and receive day
Line end.Patent (application number 201710846705.9) considers transmitting-receiving with disturbed sampling in mouth antenna and offsets asking for signal injection
Topic, but the patent is used for the case where multi-section radio station shares a receiving antenna.And VHF radio is due to needing to carry out data biography
Defeated, when multi-section VHF radio carries out output transmitting-receiving simultaneously, then every radio station needs to be equipped with independent antenna.Foregoing invention is equal
Not being suitable for processing has stand-alone antenna and receives and dispatches with the AF panel between the VHF radio of mouth.
Summary of the invention
The purpose of the present invention is to the defects of the prior art, provide a kind of vhf radio station interference cancellation dress
It sets, to eliminate the interference of the adjacent channel between multi-section vhf radio station and receiver intermodulation interference.
The present invention provides a kind of vhf radio station interference cancellation devices, it is characterised in that including
Receive and dispatch switching module, disturbed sampling module, interference cancellation module, synthesis and feedback module and control module；Transmitting-receiving
The input terminal of switching module is connected with N number of antenna and N number of radio station, receives and dispatches the interference output end of switching module and synthesizes and feedback mould
The exogenous disturbances end of block is connected, and the straight-through input terminal of error for receiving and dispatching switching module is straight with the error of feedback module with synthesis respectively
Logical output end is connected, and the transmitting output end for receiving and dispatching switching module is connected with the sampling input terminal of disturbed sampling module, transmitting-receiving switching
The control signal of module is connected with the transmitting-receiving switching control output end of control module；The disturbed sampling module leads directly to output end
It leads directly to input terminal with the transmitting of transmitting-receiving switching module to be connected, the reference output end of disturbed sampling module and the ginseng of interference cancellation module
Input terminal is examined to be connected；The output end that offsets of the interference cancellation module is connected with synthesis with the input terminal that offsets of feedback module, does
It disturbs and offsets the error input terminal of module and be connected with synthesis with the poor feedback output end of feedback module；
The input terminal of control module receives radio station receiving and transmitting signal, for monitoring the reiving/transmitting state in N number of radio station in real time, and according to
The reiving/transmitting state information in all radio station implements the control to transmitting-receiving switching module；The transmitting-receiving switching module is mentioned according to control module
The VHF radio reiving/transmitting state of confession instructs, when radio station emits and receives, respectively by disturbed sampling module and synthesis and
Feedback module concatenates between radio station and antenna, is used for disturbed sampling and interference cancellation；The disturbed sampling module is used for electricity
Platform transmitting signal is sampled, and respectively offsets channel for what sampled signal was assigned to interference cancellation module；The interference cancellation mould
Block offsets signal for generating radio frequency；It is described synthesis with feedback module for cumulative interference signal and offset signal and to synthesis after
Error signal be sampled.
The transmitting-receiving switching module is equipped with N number of antennal interface and N number of radio interface, respectively one by one with N number of antenna and radio station
It is correspondingly connected with；Receive and dispatch switching module and be equipped with N number of interference output end, respectively with synthesis and N number of exogenous disturbances end one of feedback module
One is corresponding connected；It receives and dispatches switching module and is equipped with the straight-through input terminal of N number of error, it is straight with N number of error of feedback module with synthesis respectively
Logical output end, which corresponds, to be connected；It receives and dispatches switching module and is equipped with N number of transmitting output end, taken respectively with the N number of of disturbed sampling module
Sample input terminal, which corresponds, to be connected；Receive and dispatch switching module be equipped with it is N number of emit straight-through input terminal, respectively with synthesis and feedback module
N number of straight-through output end of sampling, which corresponds, to be connected；
Disturbed sampling module is equipped with N number of sample and leads directly to output end, and input is led directly in N number of transmitting with transmitting-receiving switching module respectively
End, which corresponds, to be connected；Disturbed sampling module is equipped with M and refers to output end, respectively with M reference input of interference cancellation module
End, which corresponds, to be connected；Wherein, when N is equal to 2, taking M is 2；When N is greater than 2, M=N is taken2, it is electric with mouth that M should be greater than N number of transmitting-receiving
The interfering channel quantity that may at most occur simultaneously between platform, an interfering channel quantity then indicate a transmitting station to one
Receive the interference in radio station；
The the 1st to M of interference cancellation module offset output end offset respectively with synthesis with the 1st to M of feedback module it is defeated
Enter end to be connected, the 1st to M error input terminal respectively with synthesis and the 1st to M error feedback output end phase of feedback module
Even.
The transmitting-receiving switching module includes N number of independent transmitting-receiving switching submodule；Wherein each transmitting-receiving switching submodule is set
It is equipped with an antennal interface, a radio interface, an interference output end, an error and leads directly to input terminal, a transmitting output
End, a transmitting straight-through input terminal, a control signal；
The antennal interface of each transmitting-receiving switching submodule is connected with antenna, and radio interface is connected with radio station, interferes defeated
Outlet is connected with synthesis with the exogenous disturbances end of feedback module, and error leads directly to input terminal and synthesis is straight with the error of feedback module
Logical output end is connected, and transmitting output end is connected with the sampling input terminal of disturbed sampling module, emits straight-through input terminal and closes
It is connected at output end is led directly to the sampling of feedback module, the transmitting-receiving switching control output end phase of control signal and control module
Even.
The disturbed sampling module includes N number of independent RF coupler and several power splitters；Wherein
The N number of sampling input terminal of the input terminal of N number of RF coupler, that is, disturbed sampling module, N number of RF coupler
Straight-through output end be disturbed sampling module N number of sampling lead directly to output end；N number of RF coupler coupled output respectively with
Power splitter input terminal is connected, for emitting source sampling to each interference；
The output end of the power splitter is connected with the reference input of interference cancellation module, according to mutual between each radio station
The road the N interference and coupling sampled signal of input is assigned to and offsets the corresponding M reference input of module by disturbed condition.
The interference cancellation module includes M and offsets channel；Wherein, the error feedback input end for offseting channel all the way
Be connected with synthesis with the error feedback output end of feedback module, offset output end according to interfering with each other relationship between radio station and synthesize
The input terminal that offsets corresponding with feedback module is connected, and a part for offseting signal as multichannel offsets signal with cumulative interference.
The synthesis and feedback module include N number of multiplexer, N number of No. 2 synthesizer, N number of back coupler, N number of road N
Power splitter, N number of bandpass filter, N number of input chopper, N number of low-noise amplifier and N number of output chopper；Wherein
The multiplexer, input terminal are connected with interference cancellation module output end, and output end and No. 2 synthesizers are defeated
Enter end to be connected, offsets signal for synthesizing multi-path, and generate multi-jamming sources and offset signal；
No. 2 synthesizer, first input end be synthesize with the exogenous disturbances end of feedback module, the second input terminal with
Synthesize distribution module output end be connected, output end is connected with the input terminal of feedback module, for by interference signal with offset
Signal at；
Input terminal, that is, feedback module input terminal of the back coupler, the coupled output of back coupler and the road N
The input terminal of power splitter is connected, the straight-through output end of back coupler is connected with the input terminal of bandpass filter, bandpass filter
Output end be connected with the input terminal of input chopper, the input terminal phase of the output end of input chopper and low-noise amplifier
Connect, the output end of low-noise amplifier is connected with the input terminal of output chopper, the output end of output chopper i.e. feedback module
Straight-through output end, the road N power splitter output end be synthesize with the error feedback output end of feedback module, the road N power splitter it is N number of
Output end is connected with N number of error feedback input end of interference cancellation module respectively, and the road the N error feedback input end respectively corresponds
In different N number of different emission sources or N number of different radio station, it is adaptive as channel is offseted that residual signal sample is offseted for extraction
Use should be controlled.
The independent switching submodule includes four single-pole double throw RF switch, is divided into the first RF switch, the second radio frequency
Switch, third RF switch and the 4th RF switch；Wherein,
The C-terminal of first RF switch is to receive and dispatch the antennal interface of switching module, the end NO of the first RF switch and the
The C-terminals of four RF switches is connected, the end NC of the first RF switch is connected with the end NC of the second RF switch, the 4th RF switch
The straight-through input terminal of transmitting of switching module is received and dispatched at the end NO, the end NC of the first RF switch is the interference output of transmitting-receiving switching module
It holds, the C-terminal of the second RF switch is to receive and dispatch the radio interface of switching module, the end NO of the second RF switch and third RF switch
C-terminal be connected, the end NO of third RF switch and the end NC be respectively receive and dispatch switching module transmitting output end and error lead directly to it is defeated
Outlet, the control terminal of aforementioned four RF switch are connected with the control output end of control module, for realizing radio station and antenna
Transmitting-receiving switching.
The disturbed sampling module, when N is equal to 2, including 2 independent couplers；Wherein
The input terminal of the coupler, that is, disturbed sampling module sampling input terminal leads directly to output end, that is, disturbed sampling mould
Output end is led directly in the sampling of block, and coupled output is connected with the input terminal of sampling distribution module, for sampling to interference signal.
The disturbed sampling module, when N is greater than 2, including N number of coupler and N number of road N power splitter；Wherein
The input terminal of the coupling, that is, disturbed sampling module sampling input terminal leads directly to output end, that is, disturbed sampling module
Sampling lead directly to output end, coupled output is connected with the input terminal of the road N power splitter, is used for interference signal sampling；
The output end of N number of road N power splitter is the output end of disturbed sampling module, for dividing disturbed sampling signal
It is fitted on and respectively offsets channel.
The interference cancellation module, it is characterised in that: including at least M channel, one offsets the error feed back input in channel
End is connected with synthesis with the error feedback output end of feedback module, offsets output end and synthesizes and feedback module offsets input
End is connected, and offsets signal for generating radio frequency interference.
The synthesis and feedback module, as N=2, including 2 No. 2 synthesizers, 2 back couplers, 2 band logical filters
Wave device, 2 input choppers, 2 low-noise amplifiers and 2 output choppers；Wherein,
The first input end of No. 2 synthesizer is the exogenous disturbances end synthesized with feedback module, and the second input terminal is
Synthesis is connected with offset input terminal, its output end of feedback module with the input terminal of back coupler, be used for interference signal and
Offset signal synthesis；
The coupled output of the back coupler is error feedback output end, the back coupler synthesized with feedback module
Straight-through output end be connected with the input terminal of bandpass filter, the input terminal phase of the output end of bandpass filter and input chopper
Connect, input chopper output degree is connected with the input terminal of low-noise amplifier, the output end and output violent change of low-noise amplifier
The input terminal of device is connected, the output end of output chopper synthesizes and leads directly to output end with the error of feedback module, for extraction pair
The residual signal sample that disappears is used as channel adaptive control is offseted.
The synthesis and feedback module, it is characterised in that: as N > 2, including N number of road N synthesizer, N number of No. 2 synthesizer,
N number of back coupler, N number of bandpass filter, N number of input chopper, N number of low-noise amplifier, N number of output chopper and N number of N
Road power splitter；Wherein
N number of input terminal of the road N synthesizer synthesizes and offsets input terminal with the N number of of feedback module, with interference cancellation mould
N number of output end that offsets of block is connected, and the road N offsets output and corresponds respectively to different N number of different emission sources or N number of different
Radio station, for synthesizing the different signals that offset for offseting channel, formed can offset multi-jamming sources offset signal；
The first input end of No. 2 synthesizer is the exogenous disturbances end synthesized with feedback module, and the second input terminal is
Synthesis is connected with offset input terminal, its output end of feedback module with the input terminal of back coupler, be used for interference signal and
Offset signal synthesis；
The coupled output of the back coupler is connected with the input terminal of the road N power splitter, back coupler lead directly to it is defeated
Outlet is connected with the input terminal of bandpass filter, the output end of bandpass filter is connected with the input terminal of input chopper, inputs
Limiter output degree is connected with the input terminal of low-noise amplifier, the input of the output end of low-noise amplifier and output chopper
End is connected, the output end of output chopper is to synthesize to lead directly to output end with the error of feedback module, and the output end of the road N power splitter is
Synthesis and the error feedback output end of feedback module, N number of output end of the road N power splitter respectively with N number of mistake of interference cancellation module
Poor feedback input end is connected, and the road the N error feedback input end corresponds respectively to different N number of different emission sources or N number of difference
Radio station, for extract offset residual signal sample as offset module self adaptive control use.
The present invention can be used for eliminating transmitting-receiving with interfering with each other between mouth radio station；The present invention, which can be used for eliminating, has independent day
Line and transmitting-receiving between the VHF radio of mouth interference suppression；The present invention can eliminate transmitting station resistance caused by closing on reception radio station
Plug interference, adjacent channel noise jamming and multi-section transmitting station enter receiver intermodulation interference caused by receiver.
Detailed description of the invention
Fig. 1 is vhf radio station interference cancellation apparatus structure block diagram in the embodiment of the present invention；
Fig. 2 is that switching module structural block diagram is received and dispatched in the embodiment of the present invention；
Fig. 3 is that switching submodule structural block diagram is received and dispatched in the embodiment of the present invention；
Fig. 4 is a disturbed sampling modular structure block diagram in the embodiment of the present invention；
Fig. 5 is another disturbed sampling modular structure block diagram in the embodiment of the present invention；
Fig. 6 is interference cancellation modular structure block diagram in the embodiment of the present invention；
Fig. 7 is a synthesis and feedback module structural block diagram in the embodiment of the present invention；
Fig. 8 is another synthesis and feedback module structural block diagram in the embodiment of the present invention.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments, convenient for this hair is well understood
It is bright, but they limiting the invention.
Fig. 1 is the structural block diagram of one embodiment of the invention: including transmitting-receiving switching module 1, disturbed sampling module 2, interference pair
The module that disappears 3, synthesis and feedback module 4 and control module 5；Wherein
The 1st of the transmitting-receiving switching module 1 is to N antennal interface, the integer that N is >=2, respectively with the 1st to N antenna phase
Even, the 1st to N radio interface is connected with the 1st radio station and the radio station N respectively, the 1st to N interfere output end respectively with conjunction
Be connected at the 1st with feedback module 4 to N exogenous disturbances end, the 1st to N error lead directly to input terminal respectively with synthesis with it is anti-
Present module 4 the 1st to N error lead directly to output end be connected, the 1st to N transmitting output end respectively with disturbed sampling module 2
1st to N sampling input terminal is connected, and the 1st to N emits straight-through input terminal respectively with the 1st of synthesis and feedback module 4 to the
N samples straight-through output end and is connected, and control signal is connected with the transmitting-receiving switching control output end of control module 5；
1st to N sampling input terminal of the disturbed sampling module 2 is respectively with transmitting-receiving switching module 1 the 1st to N's
Emit output end to be connected, the straight-through output end of the 1st to N sampling is straight with the 1st to N transmitting of transmitting-receiving switching module 1 respectively
Logical input terminal is connected, and the 1st to N2With reference to output end respectively with offset the 1st to N of module 32Reference input is connected, and uses
It is sampled in radio station transmitting signal, and respectively offsets channel for what sampled signal was assigned to weight module；
The the 1st to N of the interference cancellation module 32Reference input respectively with disturbed sampling module 2 the 1st to N2Ginseng
It examines output end to be connected, the 1st to N2It offsets output end and offsets input terminal with the 1st to N2 of feedback module 4 with synthesis respectively
It is connected, the 1st to N2Error input terminal respectively with synthesis and the 1st to N of feedback module 42Error feedback output end is connected,
Signal is offseted for generating radio frequency；
The synthesis with the 1st of feedback module 4 to N exogenous disturbances end respectively with transmitting-receiving switching module 2 the 1st to N
Output end is interfered to be connected, the 1st to the straight-through output end of N error is straight-through to N error with the 1st of transmitting-receiving switching module 1 respectively
Input terminal is connected, and the 1st to N2, which offsets input terminal, offsets output end with the 1st to N2 of interference cancellation module 3 the respectively and be connected,
It the 1st to N2Error feedback output end respectively with interference cancellation module 3 the 1st to N2Error feedback input end is connected；For
Cumulative interference signal with offset signal and the error signal after synthesis be sampled；
The transmitting-receiving switching control output end of the control module 5 is connected with the control signal of transmitting-receiving switching module 1, defeated
Entering end is that switching signal is received and dispatched in radio station, for monitoring the reiving/transmitting state in N number of radio station in real time, and according to the reiving/transmitting state in all radio station
Information implements the control to transmitting-receiving switching module；
Further, structural block diagram such as Fig. 2 of transmitting-receiving 1 one embodiment of switching module, including N number of independent transmitting-receiving are cut
Change submodule 11；Wherein, the antennal interface of the transmitting-receiving switching submodule 1 is connected with an antenna, radio interface and a radio station
Be connected, interference output end is connected with synthesis with an exogenous disturbances end of feedback module 4, error lead directly to input terminal with synthesize and
One error of feedback module 4 leads directly to output end and is connected, and transmitting output end samples input terminal phase with the one of disturbed sampling module 2
Even, emit straight-through input terminal to be connected with the straight-through output end of a sampling of disturbed sampling module 2, control signal and control mould
The transmitting-receiving switching control output end of block 5 is connected；Wherein:
The structural block diagram of transmitting-receiving 11 1 embodiment of switching submodule is as shown in figure 3, include four single-pole double-throw radio frequencies
Switch 111~114；Wherein, an antennal interface of switching module 1 is received and dispatched in the common end (C-terminal) of the RF switch 111, penetrates
The normally open end (end NO) of frequency switch 111 is connected with the C-terminal of RF switch 114, the normal-closed end of RF switch 111 (end NC) and radio frequency
The end NC of switch 112 is connected, the end NO of RF switch 114 is to receive and dispatch the one of switching module 1 to emit straight-through input terminal, RF switch
114 end NC is the interference output end for receiving and dispatching switching module 1, a C-terminal i.e. electricity of transmitting-receiving switching module 1 for RF switch 112
Platform interface, RF switch 112 the end NO be connected with the C-terminal of RF switch 113, the end NO of RF switch 113 and the end NC are respectively
The transmitting output end and an error for receiving and dispatching switching module 1 lead directly to output end；
In this example, when RF switch 111 and RF switch 112 are thrown to the end NC, transmitting-receiving switching submodule 11 is in side
Line state, i.e. radio station are directly connected with antenna by RF switch 111 and 112；When RF switch 111,112,113 and 114 is equal
When throwing to the end NO, transmitting-receiving switching submodule 11 is in sampling state；When RF switch 111 throw to the end NO, RF switch 114 throw to
The end NC, RF switch 113 are thrown when throwing to the end NC, RF switch 112 to the end NO, and transmitting-receiving switching submodule 11, which is in, offsets state；
As N=2, the structural block diagram of 2 one embodiment of disturbed sampling module is as shown in figure 4, include 2 independent couplings
Clutch 21；Input terminal, that is, disturbed sampling module 2 one of the coupling 21 samples input terminal, leads directly to output end, that is, disturbed sampling
The one of module 2 samples straight-through output end, and coupled output is connected with a reference input of interference cancellation module 3, is used for pair
Emission source carries out disturbed sampling；
As N > 2, the structural block diagram of 2 one embodiment of disturbed sampling module is as shown in figure 5, include N number of coupler 21
With N number of road N power splitter 22；Wherein
Input terminal, that is, disturbed sampling module 2 one of the coupling 21 samples input terminal, and straight-through output end, which interferes, to be taken
The one of egf block 2 samples straight-through output end, and coupled output is connected with the input terminal of the road a N power splitter；
The output end of N number of road N power splitter 22 is the output end of disturbed sampling module 2；
The structural block diagram of 3 one embodiment of interference cancellation module is as shown in fig. 6, include N2It is a to offset channel 31, a pair
The error feedback input end in channel 31 of disappearing is connected with synthesis with an error feedback output end of feedback module 4, offsets output end
Input terminal is offseted with the one of feedback module 4 with synthesis to be connected, and offsets signal for generating radio frequency interference；
In this example, it is described offset channel and can be used in patent (application number 201518001239.6) offset channel design.
As N=2, the structural block diagram of the synthesis and 4 one embodiment of feedback module is as shown in fig. 7, comprises 22 tunnels are closed
It grows up to be a useful person 41,2 back couplers 42,1,44,1 low-noise amplifiers 45 and 1 of input chopper of bandpass filter 43,1
Output chopper 46；Wherein,
The first input end of No. 2 synthesizer 41 is the exogenous disturbances end synthesized with feedback module 4, the second input
End i.e. synthesis offsets input terminal, its output end with the one of feedback module 4 and is connected with the input terminal of back coupler 42, for that will do
It disturbs signal and is synthesized with signal is offseted；
The coupled output of the back coupler 42 is to synthesize and the error feedback output end of feedback module 4, feedback coupling
The straight-through output end of clutch 42 is connected with the input terminal of bandpass filter 43, the output end and input chopper of bandpass filter 43
44 input terminal is connected, 44 output degree of input chopper is connected with the input terminal of low-noise amplifier 45, low-noise amplifier 45
Output end be connected with the input terminal of output chopper 46, the output end of output chopper 46 synthesize with the mistake of feedback module 4
The straight-through output end of difference offsets residual signal sample as channel adaptive control is offseted for extraction and uses；
As N > 2, the structural block diagram of the synthesis and 4 one embodiment of feedback module is as shown in figure 8, include that N number of road N is closed
It grows up to be a useful person 47, N number of No. 2 synthesizer 41, N number of back coupler 42, N number of bandpass filter 43, N number of input chopper 44, N number of low noise
Acoustic amplifier 45, N number of output chopper 46 and N number of road N power splitter 48；Wherein
N number of input terminal of the road N synthesizer 47 synthesizes and offsets input terminal with the N number of of feedback module 4, with interference cancellation
N number of output end that offsets of module is connected, and the road N offsets output and corresponds respectively to different N number of different emission sources or N number of difference
Radio station, for synthesizing the different signals that offset for offseting channel, formed can offset multi-jamming sources offset signal；
The first input end of No. 2 synthesizer 41 is the exogenous disturbances end synthesized with feedback module 4, the second input
End i.e. synthesis offsets input terminal, its output end with the one of feedback module 4 and is connected with the input terminal of back coupler 42, for that will do
It disturbs signal and is synthesized with signal is offseted；
The coupled output of the back coupler 42 is connected with the input terminal of the road N power splitter 48, back coupler 42
Straight-through output end is connected with the input terminal of bandpass filter 43, the input of the output end of bandpass filter 43 and input chopper 44
End is connected, 44 output end of input chopper is connected with the input terminal of low-noise amplifier 45, the output end of low-noise amplifier 45
Be connected with the input terminal of output chopper 46, the output end of output chopper 46 synthesize led directly to the error of feedback module 4 it is defeated
Outlet, the output end of the road N power splitter 48 are the error feedback output end synthesized with feedback module 4, the road N power splitter 48 it is N number of defeated
Outlet is connected with N number of error feedback input end of interference cancellation module 3 respectively, and the road the N error feedback input end respectively corresponds
In different N number of different emission sources or N number of different radio station, residual signal sample is offseted as offseting module 3 for extracting
Self adaptive control is used.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of vhf radio station interference cancellation device, characterized by comprising: transmitting-receiving switching module, disturbed sampling mould
Block, interference cancellation module, synthesis and feedback module and control module；The input terminal of transmitting-receiving switching module is connected with N number of antenna and N
A radio station, the interference output end for receiving and dispatching switching module are connected with synthesis with the exogenous disturbances end of feedback module, transmitting-receiving switching mould
The error of block leads directly to input terminal and is connected respectively with synthesis with the straight-through output end of the error of feedback module, receives and dispatches the transmitting of switching module
Output end is connected with the sampling input terminal of disturbed sampling module, receives and dispatches the transmitting-receiving of the control signal and control module of switching module
Switching control output end is connected；The disturbed sampling module leads directly to output end and leads directly to input terminal phase with the transmitting for receiving and dispatching switching module
Even, the reference output end of disturbed sampling module is connected with the reference input of interference cancellation module；The interference cancellation module
It offsets output end to be connected with synthesis with the input terminal that offsets of feedback module, the error input terminal of interference cancellation module is with synthesis and instead
The poor feedback output end for presenting module is connected；
The input terminal of control module receives radio station receiving and transmitting signal, for monitoring the reiving/transmitting state in N number of radio station in real time, and according to all
The reiving/transmitting state information in radio station implements the control to transmitting-receiving switching module；What the transmitting-receiving switching module was provided according to control module
VHF radio reiving/transmitting state instruction, when radio station emits and receives, respectively by disturbed sampling module and synthesis and feedback
Module concatenates between radio station and antenna, is used for disturbed sampling and interference cancellation；The disturbed sampling module is used to send out radio station
It penetrates signal to be sampled, and respectively offsets channel for what sampled signal was assigned to interference cancellation module；The interference cancellation module is used
Signal is offseted in generating radio frequency；The synthesis for cumulative interference signal and offsets signal and to the mistake after synthesis with feedback module
Difference signal is sampled.
2. vhf radio station interference cancellation device according to claim 1, it is characterised in that: transmitting-receiving switching module is set
There are N number of antennal interface and N number of radio interface, connects one to one respectively with N number of antenna and radio station；It receives and dispatches switching module and is equipped with N
A interference output end corresponds with N number of exogenous disturbances end of feedback module with synthesis be connected respectively；Transmitting-receiving switching module is equipped with
N number of error leads directly to input terminal, leads directly to output end one-to-one correspondence with N number of error of feedback module with synthesis respectively and is connected；Transmitting-receiving is cut
It changes the mold block and is equipped with N number of transmitting output end, be connected respectively with N number of sampling input terminal of disturbed sampling module one-to-one correspondence；Transmitting-receiving is cut
It changes the mold block and is equipped with the straight-through input terminal of N number of transmitting, lead directly to output end one-to-one correspondence phase with synthesis and N number of sampling of feedback module respectively
Even；
Disturbed sampling module is equipped with N number of sample and leads directly to output end, and input terminal one is led directly in N number of transmitting with transmitting-receiving switching module respectively
One is corresponding connected；Disturbed sampling module is equipped with M and refers to output end, respectively with the M reference input one of interference cancellation module
One is corresponding connected；Wherein, when N is equal to 2, taking M is 2；When N is greater than 2, M=N is taken2；
The the 1st to M of interference cancellation module offsets output end and offsets input terminal with the 1st to M of feedback module with synthesis respectively
It is connected, the 1st to M error input terminal is connected with synthesis with the 1st of feedback module to M error feedback output end respectively.
3. vhf radio station interference cancellation device according to claim 2, it is characterised in that the transmitting-receiving switches mould
Block includes N number of independent transmitting-receiving switching submodule；Wherein each transmitting-receiving switching submodule is provided with an antennal interface, an electricity
Platform interface, an interference output end, an error lead directly to input terminal, a transmitting output end, a transmitting straight-through input terminal, one
A control signal.
4. vhf radio station interference cancellation device according to claim 3, it is characterised in that the disturbed sampling mould
Block includes N number of independent RF coupler and several power splitters；Wherein
The N number of sampling input terminal of the input terminal of N number of RF coupler, that is, disturbed sampling module, N number of RF coupler it is straight
Logical output end is that output end is led directly in N number of sampling of disturbed sampling module；N number of RF coupler coupled output divides with function respectively
Device input terminal is connected, for emitting source sampling to each interference；
The output end of the power splitter is connected with the reference input of interference cancellation module, according to interfering with each other between each radio station
The road the N interference and coupling sampled signal of input is assigned to and offsets the corresponding M reference input of module by situation.
5. vhf radio station interference cancellation device according to claim 4, it is characterised in that the interference cancellation mould
Block includes M and offsets channel；Wherein, the error of the error feedback input end for offseting channel all the way and synthesis and feedback module
Feedback output end be connected, offset output end according to interfered with each other between radio station relationship with synthesize it is corresponding with feedback module offset it is defeated
Enter end to be connected, a part for offseting signal as multichannel offsets signal with cumulative interference.
6. vhf radio station interference cancellation device according to claim 4, it is characterised in that the synthesis and feedback
Module includes N number of multiplexer, N number of No. 2 synthesizer, N number of back coupler, N number of road N power splitter, N number of bandpass filter, N
A input chopper, N number of low-noise amplifier and N number of output chopper；Wherein
The multiplexer, input terminal are connected with interference cancellation module output end, output end and No. 2 synthesizer input terminals
It is connected, offsets signal for synthesizing multi-path, and generate multi-jamming sources and offset signal；
No. 2 synthesizer, first input end are the exogenous disturbances end synthesized with feedback module, the second input terminal and synthesis
The output end of distribution module is connected, and output end is connected with the input terminal of feedback module, for by interference signal with offset signal
At；
Input terminal, that is, feedback module input terminal of the back coupler, the coupled output and the road N function point of back coupler
The input terminal of device is connected, the straight-through output end of back coupler is connected with the input terminal of bandpass filter, bandpass filter it is defeated
Outlet is connected with the input terminal of input chopper, the output end of input chopper is connected with the input terminal of low-noise amplifier, is low
The output end of noise amplifier is connected with the input terminal of output chopper, the i.e. feedback module of the output end of output chopper it is straight-through
The output end i.e. error feedback output end of synthesis and feedback module of output end, the road N power splitter, N number of output end of the road N power splitter
It is connected respectively with N number of error feedback input end of interference cancellation module, and the road the N error feedback input end corresponds respectively to difference
N number of different emission sources or N number of different radio station, offset residual signal sample as offseting channel adaptive control for extracting
With.
7. vhf radio station interference cancellation device according to claim 4, it is characterised in that independent switching
Module includes four single-pole double throw RF switch, is divided into the first RF switch, the second RF switch, third RF switch and the 4th
RF switch；Wherein,
The C-terminal of first RF switch is to receive and dispatch the antennal interface of switching module, and the end NO of the first RF switch is penetrated with the 4th
The C-terminal of frequency switch is connected, the end NC of the first RF switch is connected with the end NC of the second RF switch, the end NO of the 4th RF switch
The end NC of the straight-through input terminal of transmitting, the first RF switch of receiving and dispatching switching module be the interference output end for receiving and dispatching switching module,
The C-terminal of second RF switch is to receive and dispatch the C of the radio interface of switching module, the end NO of the second RF switch and third RF switch
End is connected, the end NO of third RF switch and the end NC are respectively transmitting output end and the straight-through output of error for receiving and dispatching switching module
End, the control terminal of aforementioned four RF switch are connected with the control output end of control module, for realizing the receipts in radio station and antenna
Hair switching.
8. vhf radio station interference cancellation device according to claim 4, it is characterised in that the disturbed sampling mould
Block, when N is equal to 2, including 2 independent couplers；Wherein
The input terminal of the coupler, that is, disturbed sampling module sampling input terminal leads directly to output end, that is, disturbed sampling module
Straight-through output end is sampled, coupled output is connected with the input terminal of sampling distribution module, for sampling to interference signal.
9. vhf radio station interference cancellation device according to claim 2, it is characterised in that disturbed sampling module, when
When N is greater than 2, including N number of coupler and N number of road N power splitter；Wherein
The input terminal of the coupling, that is, disturbed sampling module sampling input terminal, straight-through output end, that is, disturbed sampling module take
Sample leads directly to output end, and coupled output is connected with the input terminal of the road a N power splitter, for sampling to interference signal；
The output end of N number of road N power splitter is the output end of disturbed sampling module, for disturbed sampling signal to be assigned to
Respectively offset channel.
10. vhf radio station interference cancellation device according to claim 2, it is characterised in that the interference cancellation mould
Block, it is characterised in that: including at least M channel, offset the error feedback input end in channel and the error of synthesis and feedback module
Feedback output end is connected, and offsets output end and is connected with synthesis with the input terminal that offsets of feedback module, for generating radio frequency interference
Offset signal.
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