CN205584195U - Anti -interference communication module is used to short -wave radio set - Google Patents

Abstract

The utility model discloses an anti -interference communication module is used to short -wave radio set. Be connected to the input of FPGA treater with audio amplifier, active low -pass filter, first audio frequency AGC, audio amplifier, ADC after audio -frequency transformer is connected in order, DAC, active low -pass filter, second audio frequency AGC, audio -frequency transformer are connected in order to the output of FPGA treater, first audio frequency AGC is connected with second audio frequency AGC full duplex, and the tie point is connected with the FPGA treater. Through installing on the short -wave radio set the utility model discloses, effective communication of accomplishing message and pronunciation under complex electromagnetic environment can be improved, short wave communication's safety reliability is improved.

Description

A kind of short-wave radio set antijam communication module

Technical field

This utility model relates to New Technology Of Shortwave Communication field, particularly relates to a kind of short-wave radio set antijam communication module.

Background technology

Short wave communication is the most always in occupation of critical role.Short wave communication indomitable vitality in the field of communications mainly has benefited from some advantages that it is intrinsic.Compared with the means of communication such as satellite communication, terrestrial microwave, coaxial cable, optical cable, short wave communication need not to set up relay station can realize telecommunication, thus builds and maintenance cost is low, and the construction period is short, and equipment is simple.Can according to requirements be fixedly installed, carry out pinpointing fixed communication, it is also possible to bear or load in vehicle, naval vessel, aircraft and move communication；Circuit allocation is easy, and interim networking is convenient, rapid, has the biggest use motility；Strong to the capability to resist destruction of natural disaster or war；Communication equipment volume is little, the most hidden, it is simple to change operating frequency, to hide enemy's interference and eavesdropping, is easily recovered after destruction.Under the state of war, the safety reliability of short wave communication is higher than satellite communication, and therefore military research tissue in various countries' attaches great importance to the research of New Technology Of Shortwave Communication.

It addition, in the use of short-wave radio set, generally there is the problem that communication distance is not enough and communications anti-jamming is poor.Sea requires to complete under complex electromagnetic environment the efficient communication of message and voice with land station；The efficient communication of voice more laid particular stress on by airborne station, it is desirable to radio station is simple to operate efficiently.

Summary of the invention

For solving the problems referred to above, this utility model provides a kind of short-wave radio set antijam communication module, including audio-frequency transformer, audio frequency amplifier, active low-pass filter, the first audio A GC, audio frequency amplifier, ADC, the input of FPGA processor, FPGA processor, DAC, active low-pass filter, the second audio A GC, audio-frequency transformer, DSP/RAM, memorizer, 600bps acoustic code codec.

Described audio-frequency transformer and audio frequency amplifier, active low-pass filter, the first audio A GC, audio frequency amplifier, ADC are connected to the input of FPGA processor after being sequentially connected with, the outfan of FPGA processor is sequentially connected with DAC, active low-pass filter, the second audio A GC, audio-frequency transformer；First audio A GC and the second audio A GC full duplex connect, and junction point is connected with FPGA processor.

DSP/RAM is connected with FPGA processor full duplex, and DSP/RAM is connected with memorizer, 600bps acoustic code codec full duplex respectively, and DSP/RAM is provided with data communication interface and radio station controls interface.

600bps acoustic code codec for being converted into digital voice data or vocoded data being converted into analog voice by analog voice.

FPGA processor for carrying out spread processing, information coding and intertexture, framing, channel estimation and equalization, synchronization acquistion, MSK orthogonal modulation, deinterleaving and channel decoding etc. to signal.

DAC is for the modulated signal being converted in tonal range by the signal after MSK orthogonal modulation.

ADC is for being converted into digital voice data by audio signal.

The active low-pass filter that is sequentially connected with, the second audio A GC, audio-frequency transformer are for processing accordingly modulated signal, and the audio signal after described audio-frequency transformer will process is sent to short-wave radio set.

Accompanying drawing explanation

Fig. 1 is this utility model hardware architecture diagram.

Detailed description of the invention

As it is shown in figure 1, described antijam communication module hardware part is configured to:

Audio-frequency transformer and audio frequency amplifier, active low-pass filter, the first audio A GC, audio frequency amplifier, ADC are connected to the input of FPGA processor after being sequentially connected with, the outfan of FPGA processor is sequentially connected with DAC, active low-pass filter, the second audio A GC, audio-frequency transformer；First audio A GC and the second audio A GC full duplex connect, and junction point is connected with FPGA processor.

DSP/RAM is connected with FPGA processor full duplex, and DSP/RAM is connected with memorizer, 600bps acoustic code codec full duplex respectively, and DSP/RAM is provided with data communication interface and radio station controls interface.

600bps acoustic code codec for being converted into digital voice data or vocoded data being converted into analog voice by analog voice.

DAC is for the modulated signal being converted in tonal range by the signal after MSK orthogonal modulation.

ADC is for being converted into digital voice data by audio signal.

The active low-pass filter that is sequentially connected with, the second audio A GC, audio-frequency transformer are for processing accordingly modulated signal, and the audio signal after described audio-frequency transformer will process is sent to short-wave radio set.

Comprising some hapalonychia modules, respectively business information in FPGA processor selects module, information coding to select module with interleaving block, spread processing module, framing module, frequency conversion with filtration module, channel estimation and equalization module, synchronization acquistion module, despreading module, deinterleaving and channel decoding module, business information.

Business information selects module, for the control information according to outside input, with the form of audio signal or message information, the data received are transferred to information coding and interleaving block, and the information after deinterleaving, decoding is transferred out by audio signal or message information.

Information coding selects module with interleaving block for business information selects the output data of module send into spread spectrum mode after carrying out channel code and interleaving.

Spread spectrum mode selects processing module data message after the control information according to outside input will interweave to carry out high disposal gain spread processing or reduction process gain spread processing, and the data after processing send into framing module.

Framing module is for being grouped together into Frame by control information, the frame synchronization head of the data after spread processing with outside input.

MSK modulation module sends into DAC after Frame carries out MSK adjustment.

Frequency conversion and filtration module for carrying out frequency conversion and filtering to Frame, and exports to channel estimation and equalization module.

Channel estimation and equalization module carries out the assessment of channel status according to Frame, and then controls the control information of outside input.As: being sent into by channel condition information in the control information PC of outside input, PC adjusts control information according to the status information of channel, to strengthen interference control ability.

Synchronization acquistion module is used for using related operation, the synchronization of complete paired data frame synchronization head and capture.

Despreading module is used for the control information according to the outside input in data-frame sync head and data message carries out reduction process gain despreading or high disposal gain despreading.

Deinterleaving and channel decoding module is for being deinterleaved and channel decoding the data message in Frame, the information after decoding is transferred to business information and selects module.

Using method of the present utility model is:

By radio station, short-wave radio set is controlled interface with this utility model be connected, and arrange and can send message information to this utility model, control the external device (ED) (such as PC) of information.The working mechanism of antijam communication module with its belonging to the function of short-wave radio set relevant.When short-wave radio set belonging to it is transmitting terminal, the message that simulated voice is converted the digital voice data obtained or exterior PC feeding by 600bps acoustic code codec is carried out spreading and Error Correction of Coding by antijam communication module, then the data after coding are generated the modulated signal in tonal range by MSK orthogonal modulation and DAC conversion, and pass through active power filtering, AGC gain controls to process with audio-frequency transformer etc., audio signal after finally processing is sent to common short-wave radio set by radio station audio interface, common short-wave radio set is utilized to up-convert the signals on certain short wave channel and send.When short-wave radio set belonging to it is receiving terminal, common short-wave radio set receives signal from corresponding short wave channel, and down coversion returns to voice band, then the audio output interface from radio station sends into antijam communication module, antijam communication module demodulates, by MSK quadrature demodulation, the information carried from audio signal, it is then fed into communication codec these data are de-spread and correction process, finally recovers message data or vocoded data.Message sends into PC by serial ports, and vocoded data is sent directly into the 600bps acoustic code codec of antijam communication module can recover analog voice.

The beneficial effects of the utility model are:

By installing this utility model on short-wave radio set, the efficient communication completing message and voice under complex electromagnetic environment can be improved, improve the safety reliability of short wave communication.

Claims (1)

1. a short-wave radio set antijam communication module, it is characterized in that, including audio-frequency transformer, audio frequency amplifier, active low-pass filter, the first audio A GC, audio frequency amplifier, ADC, the input of FPGA processor, FPGA processor, DAC, active low-pass filter, the second audio A GC, audio-frequency transformer, DSP/RAM, memorizer, 600bps acoustic code codec；

Described audio-frequency transformer and audio frequency amplifier, active low-pass filter, the first audio A GC, audio frequency amplifier, ADC are connected to the input of FPGA processor after being sequentially connected with, the outfan of FPGA processor is sequentially connected with DAC, active low-pass filter, the second audio A GC, audio-frequency transformer；First audio A GC and the second audio A GC full duplex connect, and junction point is connected with FPGA processor；

DSP/RAM is connected with FPGA processor full duplex, and DSP/RAM is connected with memorizer, 600bps acoustic code codec full duplex respectively, and DSP/RAM is provided with data communication interface and radio station controls interface.