CN106772467A - The up injection transmission signal generating means of L frequency ranges - Google Patents
The up injection transmission signal generating means of L frequency ranges Download PDFInfo
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- CN106772467A CN106772467A CN201611034794.9A CN201611034794A CN106772467A CN 106772467 A CN106772467 A CN 106772467A CN 201611034794 A CN201611034794 A CN 201611034794A CN 106772467 A CN106772467 A CN 106772467A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
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- Computer Networks & Wireless Communication (AREA)
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- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses the up injection transmission signal generating means of L frequency ranges, it is related to satellite navigation system.It it is main by monitoring computer, network transmission module, dsp processor, FPGA, D/A modular converter, radio-frequency modulations module and wave filter group into.It is of the invention mainly to realize the real-time operation of high-speed figure broadband signal with output using FPGA+DSP embedded program modular forms, changed by high-speed d/a and output analog differential orthogonal signalling are set, radio-frequency modulations module carries out direct quadrature up-conversion, and radio frequency output frequency is set using digital control scheme, flexibility is high, then device can be with outputting high quality radiofrequency signal after filtering；The present invention has the advantages that hardware configuration is simple, integrated level is high, versatility good, flexibility ratio is high and application's expansibility, extensive use and checking in Beidou satellite navigation system, are particularly well-suited to broadband, the up injection transmission signal generation equipment of high accuracy L frequency ranges in satellite navigation system.
Description
Technical field
The present invention relates to a kind of broadband signal generating means in field of satellite navigation, Beidou satellite navigation system is particularly well-suited to
The real-time generation of the up injection transmission signal of high accuracy L frequency ranges in system.
Background technology
The up injection transmission signal of L frequency ranges is main in navigation system injects navigation message and management data to satellite, utilizes
Up injection transmission signal completes precise distance measurement and guiding satellite platform time between star ground, is the urban satellite navigation service and platform management
And Satellite Orbit Determination provides safeguard, while ensuring that the time system of satellite platform is reliable and stable.Big Dipper GPS
Number biography reliability, range accuracy, time guiding function, security and antijamming capability to up injection etc. are proposed higher
Performance requirement, with reference to China's technical merit and system environments, propose reasonable, efficient, advanced, the feasible up injection of L frequency ranges
Transmission signal design is particularly important.
With the development of satellite technology application, to the required precision more and more higher of navigation neceiver, therefore, to navigation signal
The requirement of emitter also more and more higher, not only needs to produce the navigation signal similar to satellite, is also required to analog satellite
Relative motion and the error that produces of multipath effect, high-precision Dynamic Signal is produced to check the dynamic of navigation neceiver
Capturing and tracking performances and precision, traditional method are to use DDS integrated chips, and Doppler is calculated by the emulation data for giving
Skew, the frequency control word and phase control words of external DDS are updated according to certain intervals, and it is integrated that Adjustment precision is limited to DDS
The parameter of chip, and be likely to result in the discontinuous of time adjustment frequency, jumps larger, take hardware board area also compared with
Greatly.
The content of the invention
It is an object of the invention to according in above-mentioned background technology to the requirement of up injection transmission signal high performance index and
Overcome the shortcomings of that conventional method realizes analog satellite Doppler motion and provides a kind of L of low complex degree using DDS integrated chips
The up injection transmission signal generating means of frequency range.The present invention has enough versatilities, flexibility and certain autgmentability, hardware
Simple structure is easily achieved.
The object of the present invention is achieved like this：The up injection transmission signal generating means of L frequency ranges, including monitoring is calculated
Machine, network transmission module, dsp processor, FPGA, D/A modular converter, radio-frequency modulations module and wave filter, FPGA outputs reset
To dsp processor, described FPGA includes data management module, text memory module, spreading code generation module, control word to signal
It is memory module, time frequency signal generation module, message coding and correction verification module, band spectrum modulation module, numerically-controlled oscillator, orthogonal
Modulation module and signal handover module；
Monitoring computer is used to produce various instructions, and each instruction is exported by network transmission module and data management module
To dsp processor；Monitoring computer is additionally operable to reception dsp processor and is sent by data management module and network transmission module
Status information；Described various instructions include control signal generation form, modulation intelligence, link setup target, modulation bandwidth, modulation
The instruction of mode, dynamic delay, output state and watt level；
Network transmission module is used to according to network UDP host-host protocols export each instruction for monitoring computer export to data
Management module；It is additionally operable to export the status information that data management module is exported to monitoring computer；
Data management module is used for each instruction that will receive to carry out data transmit-receive and differentiates managing and being connect by external memory storage
Mouth is exported to dsp processor；It is additionally operable to export the status information that dsp processor is exported to network transmission module；It is additionally operable to connect
The status information that collection of letters handover module, D/A modular converters, time frequency signal generation module and radio-frequency modulations module are exported respectively；
Dsp processor is used for control signal modulation intelligence, link setup target, modulation bandwidth, modulation system and dynamic delay
Instruction parse correspondence generation I, Q two branch road textual information, temporal information, satellite ID, spreading code clock control word, carrier wave
Control word and time and frequency standards enable signal, the branch road textual information of I, Q two is exported to text by data management module and is stored
Module is stored, and temporal information and satellite ID is exported to spreading code generation module by data management module, by spreading code
Clock control word and carrier Control word are exported to control word memory module by data management module and stored, by time and frequency standards
Signal is enabled to be exported to time frequency signal generation module by data management module；Dsp processor is additionally operable to obtain status information simultaneously
Sent to monitoring computer by data management module and network transmission module；Described status information is produced including time frequency signal
The output of the working condition of module, the output of signal handover module, the working condition of D/A modular converters and radio-frequency modulations module；
Text memory module is used to for the branch road textual information of I, Q two of input to be stored in respective RAM memory spaces respectively, and
Exported under the driving of 1PPS reference signals and text clock signal to message coding and correction verification module；
Spreading code generation module is used for satellite ID and temporal information according to input, and the generation of controlling cycle spreading code is multinomial
Formula and no periodic nonlinear precise code module generate the branch road of I, Q two respectively under the driving of 1PPS reference signals and spreading code clock
Spreading codes information is simultaneously exported to band spectrum modulation module；
Control word memory module is used to for input spreading code clock control word and carrier Control word to be stored in respective RAM respectively
Memory space is simultaneously exported to numerically-controlled oscillator respectively under the driving that control word reads clock signal and 1PPS reference signals；
Time frequency signal generation module is used for spreading code clock, time and frequency standards enable signal and the reference clock that will be input into
The control word that 10MHz and 1PPS produces after Time and Frequency Synchronization and frequency phase lock ring carry out frequency multiplication and scaling down processing reads clock and believes
Number, 1PPS reference signals, text clock signal and system work clock, control word reading clock signal is exported to control word and is deposited
Storage module, 1PPS reference signals is exported to text memory module, spreading code generation module, control word memory module, text and is compiled
Code and correction verification module and numerically-controlled oscillator, text clock signal is exported to text memory module and message coding and verification
Module, system work clock is exported to numerically-controlled oscillator, orthogonal modulation module and D/A modular converters；
Message coding and correction verification module are used to be input into the branch road textual information of I, Q two in 1PPS reference signals and text clock
Channel coding is completed under the driving of signal and CRC check is calculated, and exports the textual information after the branch road of I, Q two coding to spreading tune
Molding block；
The text letter that band spectrum modulation module is used for after the branch road spreading codes information of I, Q two and the branch road of I, Q two coding that will be input into
Breath carries out digital spread spectrum computing under the driving of spreading code clock and obtains the branch road spread-spectrum signal of I, Q two, and exports to orthogonal modulation
Module；
Numerically-controlled oscillator is used for spreading code clock control word, system work clock and the 1PPS reference signals that will be input into
Spreading code clock is generated under Direct Digital Synthesizer effect and is exported to band spectrum modulation module, spreading code generation module
With time frequency signal generation module, carrier Control word, system work clock and 1PPS reference signals are in direct digital frequency synthesier
Device effect is lower to be generated sinusoidal carrier and cosine carrier and exports respectively to orthogonal modulation module；
Orthogonal modulation module is used for the branch road spread-spectrum signal of I, Q two, sinusoidal carrier and the cosine carrier that will be input into system work
Make to carry out under the driving of clock after digital modulation obtains one phase of big-dipper satellite system signal and global system signal, by big-dipper satellite
One phase system signal and global system signal are exported to signal handover module respectively；
Signal handover module is used to for one phase of the big-dipper satellite system signal of input and global system signal to switch over choosing
Select, and export one of which system signal to D/A modular converters；It is additionally operable to oneself state information output to data management mould
Block；
D/A modular converters are used to that the Big Dipper system signal of input to be converted into analogue difference under the driving of system work clock
After dividing orthogonal signalling, analog differential orthogonal signalling are exported to radio-frequency modulations module；It is additionally operable to arrive oneself state information output
Data management module；
Radio-frequency modulations module is used to carry out the analog differential orthogonal signalling of input under reference clock 10MHz signal functions
After orthogonal modulation, up-conversion obtain up-conversion signal, output up-conversion signal to wave filter；It is additionally operable to oneself state information is defeated
Go out to data management module；
The interference signal that wave filter is used to filter up-conversion signal obtains radiofrequency signal.
The present invention realizes signal generation using the embedded-type modularized program forms of FPGA+DSP, and hardware configuration is simply easy to real
Existing, flexibility is high and application's expansibility is strong, to adapt to Beidou satellite navigation system construction, can produce two kinds of signal system lattice
Formula totally four channel signals, can output signal under analog satellite real motion state, dynamic range speed ± 8000m/s, plus
Speed ± 500m/s2, rf frequency 700~2700MHz of output area is supported, using digital arrays, effectively inhibit
The generation of image frequency components, it is to avoid larger spurious components, output power signal uses numerical control accurate attenuation.
The present invention has the following advantages that for background technology：
(1) present invention uses software radio framework, is realized at a high speed by the embedded-type modularized program forms of FPGA+DSP
Digital broadband signal real-time operation is processed, and realizes that signal is changed and defeated by good digital device and high-speed A/D converter
Go out, the compatible up transmission signal generation of multi-signal system form, with good versatility.
(2) analog satellite Doppler dynamic delay is realized using numerically-controlled oscillator in the present invention, using in FPGA pieces
Resource, completes multistage DDS adjustment, produces dynamic clock, improves efficiency, while overcoming traditional scheme using the integrated cores of DDS
Piece Adjustment precision is limited, and the frequency of time adjustment is discontinuous, it is larger to jump, and takes the big shortcoming of hardware board area.
(3) present invention supports to produce two kinds of signal system forms of Beidou navigation totally four channel signals, being capable of analog satellite
Output signal under real motion state, velocity interval ± 8000m/s, acceleration range ± 500m/s2, rf frequency output area
700~2700MHz, using digital arrays, effectively inhibit the generation of image frequency components, it is to avoid larger spuious point
Amount, output power signal uses numerical control accurate attenuation.
(4) on the premise of the up injection transmission signal high performance index of generation is ensured, the signal generating apparatus complexity
Low, program is expansible, software and hardware is easily realized, reliable and with low cost.
Brief description of the drawings
Fig. 1 is control signal generating means modular functionality block diagram of the invention.
Fig. 2 is that dsp processor of the invention completes numerical calculation and signal control block diagram.
Specific embodiment
With reference to Fig. 1 and Fig. 2, the present invention is described further.
L frequency ranges it is up injection transmission signal generating means, including monitoring computer, network transmission module, dsp processor,
FPGA, D/A modular converter, radio-frequency modulations module and wave filter, FPGA export reset signal to dsp processor, and FPGA includes number
Compiled according to management module, text memory module, spreading code generation module, control word memory module, time frequency signal generation module, text
Code and correction verification module, band spectrum modulation module, numerically-controlled oscillator, orthogonal modulation module and signal handover module；
Monitoring computer is used to produce various instructions, and each instruction is exported by network transmission module and data management module
To dsp processor；Monitoring computer is additionally operable to reception dsp processor and is sent by data management module and network transmission module
Status information；Described various instructions include control signal generation form, modulation intelligence, link setup target, modulation bandwidth, modulation
The instruction of mode, dynamic delay, output state and watt level；
Network transmission module is used to according to network UDP host-host protocols export each instruction for monitoring computer export to data
Management module；It is additionally operable to export the status information that data management module is exported to monitoring computer；
Data management module is used for each instruction that will receive to carry out data transmit-receive and differentiates managing and being connect by external memory storage
Mouth is exported to dsp processor；It is additionally operable to export the status information that dsp processor is exported to network transmission module；It is additionally operable to connect
The status information that collection of letters handover module, D/A modular converters, time frequency signal generation module and radio-frequency modulations module are exported respectively；
Dsp processor is used for control signal modulation intelligence, link setup target, modulation bandwidth, modulation system and dynamic delay
Instruction parse correspondence generation I, Q two branch road textual information, temporal information, satellite ID, spreading code clock control word, carrier wave
Control word and time and frequency standards enable signal, the branch road textual information of I, Q two is exported to text by data management module and is stored
Module is stored, and temporal information and satellite ID is exported to spreading code generation module by data management module, by spreading code
Clock control word and carrier Control word are exported to control word memory module by data management module and stored, by time and frequency standards
Signal is enabled to be exported to time frequency signal generation module by data management module；Dsp processor is additionally operable to obtain status information simultaneously
Sent to monitoring computer by data management module and network transmission module；Described status information is produced including time frequency signal
The output of the working condition of module, the output of signal handover module, the working condition of D/A modular converters and radio-frequency modulations module；
Text memory module is used to for the branch road textual information of I, Q two of input to be stored in respective RAM memory spaces respectively, and
Exported under the driving of 1PPS reference signals and text clock signal to message coding and correction verification module；
Spreading code generation module is used for satellite ID and temporal information according to input, and the generation of controlling cycle spreading code is multinomial
Formula and no periodic nonlinear precise code module generate the branch road of I, Q two respectively under the driving of 1PPS reference signals and spreading code clock
Spreading codes information is simultaneously exported to band spectrum modulation module；
Control word memory module is used to for input spreading code clock control word and carrier Control word to be stored in respective RAM respectively
Memory space is simultaneously exported to numerically-controlled oscillator respectively under the driving that control word reads clock signal and 1PPS reference signals；
Time frequency signal generation module is used for spreading code clock, time and frequency standards enable signal and the reference clock that will be input into
The control word that 10MHz and 1PPS produces after Time and Frequency Synchronization and frequency phase lock ring carry out frequency multiplication and scaling down processing reads clock and believes
Number, 1PPS reference signals, text clock signal and system work clock, control word reading clock signal is exported to control word and is deposited
Storage module, 1PPS reference signals is exported to text memory module, spreading code generation module, control word memory module, text and is compiled
Code and correction verification module and numerically-controlled oscillator, text clock signal is exported to text memory module and message coding and verification
Module, system work clock is exported to numerically-controlled oscillator, orthogonal modulation module and D/A modular converters；
Message coding and correction verification module are used to be input into the branch road textual information of I, Q two in 1PPS reference signals and text clock
Channel coding is completed under the driving of signal and CRC check is calculated, and exports the textual information after the branch road of I, Q two coding to spreading tune
Molding block；Message coding and correction verification module are encoded using Turbo, LDPC codings and CRC check generator polynomial are encoded and
Verification.
The text letter that band spectrum modulation module is used for after the branch road spreading codes information of I, Q two and the branch road of I, Q two coding that will be input into
Breath carries out digital spread spectrum computing under the driving of spreading code clock and obtains the branch road spread-spectrum signal of I, Q two, and exports to orthogonal modulation
Module；Band spectrum modulation module carries out band spectrum modulation using the addend word arithmetic of binary system mould two.
Numerically-controlled oscillator is used for spreading code clock control word, system work clock and the 1PPS reference signals that will be input into
Spreading code clock is generated under Direct Digital Synthesizer effect and is exported to band spectrum modulation module, spreading code generation module
With time frequency signal generation module, carrier Control word, system work clock and 1PPS reference signals are in direct digital frequency synthesier
Device effect is lower to be generated sinusoidal carrier and cosine carrier and exports respectively to orthogonal modulation module；
Orthogonal modulation module is used for the branch road spread-spectrum signal of I, Q two, sinusoidal carrier and the cosine carrier that will be input into system work
Make to carry out under the driving of clock after digital modulation obtains one phase of big-dipper satellite system signal and global system signal, by big-dipper satellite
One phase system signal and global system signal are exported to signal handover module respectively；Orthogonal modulation module uses binary phase-shift key
Control and QPSK carry out orthogonal modulation.
Signal handover module is used to for one phase of the big-dipper satellite system signal of input and global system signal to switch over choosing
Select, and export one of which system signal to D/A modular converters；It is additionally operable to oneself state information output to data management mould
Block；
D/A modular converters are used to that the Big Dipper system signal of input to be converted into analogue difference under the driving of system work clock
After dividing orthogonal signalling, analog differential orthogonal signalling are exported to radio-frequency modulations module；It is additionally operable to arrive oneself state information output
Data management module；
Radio-frequency modulations module is used to carry out the analog differential orthogonal signalling of input under reference clock 10MHz signal functions
After orthogonal modulation, up-conversion obtain up-conversion signal, output up-conversion signal to wave filter；It is additionally operable to oneself state information is defeated
Go out to data management module；
The interference signal that wave filter is used to filter up-conversion signal obtains radiofrequency signal.
Dsp processor completes numerical calculation and is controlled with signal：Dsp processor includes data transmit-receive module, text treatment mould
Block, control word computing module, signal control module and equipment condition monitoring module；
Data transmit-receive module is used to receive data management module each instruction of output, the control that will be received according to data interface protocol
Signal generation form processed and modulation intelligence instruction output export extremely modulation bandwidth and dynamic delay instruction to text processing module
Control word computing module, by link setup target, modulation system, output state and watt level instruction output to signal control module；
Receiving device state monitoring module output state information and data management module output state information are additionally operable to, according to data-interface
Status information to data management module is sent after protocol integration；
Text processing module is used for the control signal generation form that will be input into and modulation intelligence is instructed according to information frame structure
The injection of specification, information category formatting, information definition and information and treatment strategy complete layout and the real-time update of content,
Obtain the branch road textual information of I, Q two and export respectively to data management module；
Control word computing module is used to calculate Doppler frequency in real time according to modulation bandwidth and the dynamic delay instruction of input
Skew obtains spreading code clock control word and carrier Control word, and exports respectively to data management module；
Signal control module is used to carry out the instruction of the link setup target of input, modulation system, output state and watt level
Signal control is parsed, and is exported to data management module；
Equipment condition monitoring module is used to export the status information of input to data transmit-receive module.
The present invention realizes signal generation using the embedded-type modularized program forms of FPGA+DSP, and hardware configuration is simply easy to real
Existing, flexibility is high and application's expansibility is strong, to adapt to Beidou satellite navigation system construction, can produce two kinds of signal system lattice
Formula totally four channel signals, can output signal under analog satellite real motion state, dynamic range speed ± 8000m/s, plus
Speed ± 500m/s2, rf frequency 700~2700MHz of output area is supported, using digital arrays, effectively inhibit
The generation of image frequency components, it is to avoid larger spurious components, output power signal uses numerical control accurate attenuation.
Claims (5)
1.L frequency ranges it is up injection transmission signal generating means, including monitoring computer, network transmission module, dsp processor,
FPGA, D/A modular converter, radio-frequency modulations module and wave filter, FPGA export reset signal to dsp processor, it is characterised in that
Described FPGA includes data management module, text memory module, spreading code generation module, control word memory module, time-frequency letter
Number generation module, message coding and correction verification module, band spectrum modulation module, numerically-controlled oscillator, orthogonal modulation module and signal
Handover module；
Monitoring computer be used for produce various instructions, by it is each instruction by network transmission module and data management module export to
Dsp processor；Monitoring computer is additionally operable to receive what dsp processor was sent by data management module and network transmission module
Status information；Described various instructions include control signal generation form, modulation intelligence, link setup target, modulation bandwidth, modulation methods
The instruction of formula, dynamic delay, output state and watt level；
Network transmission module is used to according to network UDP host-host protocols export each instruction for monitoring computer export to data management
Module；It is additionally operable to export the status information that data management module is exported to monitoring computer；
Data management module is used for each instruction that will receive to carry out data transmit-receive and differentiates to manage and defeated by external memory interface
Go out to dsp processor；It is additionally operable to export the status information that dsp processor is exported to network transmission module；It is additionally operable to receive letter
The status information that number handover module, D/A modular converters, time frequency signal generation module and radio-frequency modulations module are exported respectively；
Dsp processor is used for the finger of control signal modulation intelligence, link setup target, modulation bandwidth, modulation system and dynamic delay
Order carries out parsing correspondence generation I, Q two branch road textual information, temporal information, satellite ID, spreading code clock control word, carrier Control
Word and time and frequency standards enable signal, and the branch road textual information of I, Q two is exported to text memory module by data management module
Stored, temporal information and satellite ID are exported to spreading code generation module by data management module, by spreading code clock
Control word and carrier Control word are exported to control word memory module by data management module and stored, and time and frequency standards are enabled
Signal is exported to time frequency signal generation module by data management module；Dsp processor is additionally operable to obtain status information and pass through
Data management module and network transmission module are sent to monitoring computer；Described status information includes time frequency signal generation module
Working condition, the output of signal handover module, the output of the working condition of D/A modular converters and radio-frequency modulations module；
Text memory module is used to for the branch road textual information of I, Q two of input to be stored in respective RAM memory spaces respectively, and
Exported under the driving of 1PPS reference signals and text clock signal to message coding and correction verification module；
Spreading code generation module be used for according to input satellite ID and temporal information, controlling cycle spreading code generator polynomial and
No periodic nonlinear precise code module generates the branch road of I, Q two spread spectrum respectively under the driving of 1PPS reference signals and spreading code clock
Code information is simultaneously exported to band spectrum modulation module；
Control word memory module is used to for input spreading code clock control word and carrier Control word to be stored in respective RAM storages respectively
Space simultaneously exports to numerically-controlled oscillator respectively under the driving that control word reads clock signal and 1PPS reference signals；
Time frequency signal generation module is used for spreading code clock, time and frequency standards enable signal and the reference clock 10MHz that will be input into
Produced after Time and Frequency Synchronization and frequency phase lock ring carry out frequency multiplication and scaling down processing with 1PPS control word read clock signal,
1PPS reference signals, text clock signal and system work clock, control word reading clock signal is exported to control word storage
Module, 1PPS reference signals are exported to text memory module, spreading code generation module, control word memory module, message coding
With correction verification module and numerically-controlled oscillator, text clock signal is exported to text memory module and message coding and calibration mode
Block, system work clock is exported to numerically-controlled oscillator, orthogonal modulation module and D/A modular converters；
Message coding and correction verification module are used to be input into the branch road textual information of I, Q two in 1PPS reference signals and text clock signal
Driving under complete channel coding and calculate CRC check, and export the textual information after the branch road of I, Q two coding to band spectrum modulation mould
Block；
Band spectrum modulation module is used to exist the textual information after the branch road spreading codes information of I, Q two being input into and the branch road of I, Q two coding
Digital spread spectrum computing is carried out under the driving of spreading code clock and obtains the branch road spread-spectrum signal of I, Q two, and exported to orthogonal modulation module；
Numerically-controlled oscillator is used for spreading code clock control word, system work clock and the 1PPS reference signals that will be input into straight
Connect the lower generation spreading code clock of digital frequency synthesizer effect and output to band spectrum modulation module, spreading code generation module and when
Frequency signal generator module, carrier Control word, system work clock and 1PPS reference signals are made in Direct Digital Synthesizer
Generated sinusoidal carrier and cosine carrier and exported respectively to orthogonal modulation module with lower；
Orthogonal modulation module is used for the branch road spread-spectrum signal of I, Q two, sinusoidal carrier and the cosine carrier that will be input into when system works
Carried out under the driving of clock after digital modulation obtains one phase of big-dipper satellite system signal and global system signal, by the phase of big-dipper satellite one
System signal and global system signal are exported to signal handover module respectively；
Signal handover module is used to for one phase of the big-dipper satellite system signal of input and global system signal to switch over selection, and
Export one of which system signal to D/A modular converters；It is additionally operable to oneself state information output to data management module；
D/A modular converters are used to that the Big Dipper system signal of input to be converted into analog differential just under the driving of system work clock
After handing over signal, analog differential orthogonal signalling are exported to radio-frequency modulations module；It is additionally operable to oneself state information output to data
Management module；
Radio-frequency modulations module is orthogonal for the analog differential orthogonal signalling of input to be carried out under reference clock 10MHz signal functions
After modulation, up-conversion obtain up-conversion signal, output up-conversion signal to wave filter；It is additionally operable to arrive oneself state information output
Data management module；
The interference signal that wave filter is used to filter up-conversion signal obtains radiofrequency signal.
2. L frequency ranges according to claim 1 are up injects transmission signal generating means, it is characterised in that：The DSP treatment
Device includes data transmit-receive module, text processing module, control word computing module, signal control module and equipment condition monitoring mould
Block；
Data transmit-receive module is used to receive each instruction that data management module is exported, the control that will be received according to data interface protocol
Signal generation form and modulation intelligence instruction output extremely control modulation bandwidth and dynamic delay instruction output to text processing module
Word computing module processed, by link setup target, modulation system, output state and watt level instruction output to signal control module；Also
For receiving device state monitoring module output state information and data management module output state information, assisted according to data-interface
View sends status information to data management module after integrating；
Text processing module be used for will be input into control signal generation form and modulation intelligence instruction according to information frame specification for structure,
The injection of information category formatting, information definition and information and treatment strategy complete layout and the real-time update of content, obtain
The branch road textual information of I, Q two is simultaneously exported to data management module respectively；
Control word computing module is used to calculate Doppler shift in real time according to modulation bandwidth and the dynamic delay instruction of input
Spreading code clock control word and carrier Control word are obtained, and is exported respectively to data management module；
Signal control module is used to be parsed the instruction of the link setup target of input, modulation system, output state and watt level
Signal control is completed, and is exported to data management module；
Equipment condition monitoring module is used to export the status information of input to data transmit-receive module.
3. L frequency ranges according to claim 1 and 2 are up injects transmission signal generating means, it is characterised in that：Message coding
Encoded and verified using Turbo codings, LDPC codings and CRC check generator polynomial with correction verification module.
4. L frequency ranges according to claim 1 and 2 are up injects transmission signal generating means, it is characterised in that：Band spectrum modulation
Module carries out band spectrum modulation using the addend word arithmetic of binary system mould two.
5. L frequency ranges according to claim 1 and 2 are up injects transmission signal generating means, it is characterised in that：Orthogonal modulation
Module carries out orthogonal modulation using binary phase shift keying and QPSK.
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