CN104579410A - General signal receiving and transmitting machine and received-transmitted signal processing method - Google Patents
General signal receiving and transmitting machine and received-transmitted signal processing method Download PDFInfo
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Abstract
The invention provides a general signal receiving and transmitting machine and a received-transmitted signal processing method. The received-transmitted signal processing method comprises a signal receiving process and a signal transmitting process, wherein the signal receiving process comprises the following steps: a signal receiving module is used for carrying out once-receiving frequency-conversion processing on received signals obtained from an antenna, then converting the received signals into intermediate-frequency analog signals and transmitting the intermediate-frequency analog signals to a digital-signal processing module, and the digital-signal processing module is used for converting the intermediate-frequency analog signals into digital signal data and transmitting the digital signal data to a digital-signal demodulating circuit; the signal transmitting process comprises the following steps: the digital-signal processing module is used for converting obtained data to be transmitted from the digital processing circuit into base-band signals and transmitting the base-band signals to a signal transmitting module, and the signal transmitting module is used for carrying out once-transmitting frequency-conversion processing on the base-band signals obtained from the digital-signal processing module, converting the base-band signals into transmitting signals and outputting the transmitting signals into the antenna; and the digital-signal processing module is used for providing the same frequency-conversion working frequency settable by software for once-receiving frequency conversion of the signal receiving module and once-transmitting frequency conversion of the signal transmitting module.
Description
Technical field
The present invention relates to the Spread Spectrum TT&C technology of space flight aerospace product, particularly, relate to a kind of universal receiver transmitter and receiving and transmitting signal processing method.
Background technology
In TT&C system, answering machine is most crucial communication equipment.Answering machine belongs to transceiver, because answering machine requires to possess range finding and speed measuring function, there is certain ratio between receive frequency and tranmitting frequency.Carry out along with to the intensive of space mission, need to design unitized software and hardware transmitter platform, pay fast and reliability requirement to meet simultaneously.
Now conventional generalization software and hardware scheme has two kinds of modes usually, and a kind of is the frequency customization crystal oscillator used according to reality, the operating frequency needed for formation, and according to operating frequency adjustment Receiver Software, makes it to meet software function requirement; One uses fixing crystal oscillator, forms required frequency by the frequency synthesizer of configuration double conversion structure, and the digital transmitting and receiving intermediate frequency required for being produced by software.
There is respective defect in these two kinds of methods.The first needs customization crystal oscillator and revises software benchmark operating frequency, there is longer delivery cycle, is difficult to meet the requirement of paying fast; Although the second decreases software change amount, owing to adopting double conversion, integrated level is difficult to compression, and needs to change multiple filter for configuration.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of universal receiver transmitter and receiving and transmitting signal processing method.
According to a kind of universal receiver transmitter provided by the invention, be connected with antenna and digital processing circuit, comprise signal receiving module, signal emission module and digital signal processing module;
Described signal receiving module, is connected with digital signal processing module with described antenna respectively, receives analog intermediate frequency signal send to described digital signal processing module for being converted to after the Received signal strength obtained from antenna is once received frequency-conversion processing;
Described signal emission module, is connected with digital signal processing module with described antenna respectively, exports to antenna for being converted to transmit after the baseband signal obtained from digital signal processing module is once launched frequency-conversion processing;
Described digital signal processing module, is connected with described signal receiving module, signal emission module, digital processing circuit respectively, for:
The described reception analog intermediate frequency signal obtained from described signal receiving module is converted to demodulating data and is transferred to described digital processing circuit,
The data to be launched obtained from described digital processing circuit are converted to base band signal transmission to described signal emission module,
Same variable frequency work frequency is provided with the once transmitting frequency conversion once receiving frequency conversion and signal emission module for described signal receiving module.
As prioritization scheme, described digital signal processing module comprises benchmark high stability crystal oscillator, baseband signal maker, digital receive circuit, radio frequency reference frequencies further
synthesizer, band pass filter and frequency synthesizer;
Described benchmark high stability crystal oscillator, is connected with described baseband signal maker, digital receive circuit, radio frequency reference frequencies synthesizer respectively, for providing same driving frequency for described baseband signal maker, digital receive circuit, radio frequency reference frequencies synthesizer,
Described baseband signal maker, be connected with described benchmark high stability crystal oscillator, digital processing circuit, signal emission module respectively, for to sample to the data to be launched received from described digital processing circuit with described driving frequency and modulation treatment generates base band signal transmission to described signal emission module
Described digital receive circuit, be connected with described benchmark high stability crystal oscillator, digital processing circuit, signal receiving module respectively, for doing modulus sampling with described driving frequency to the described reception analog intermediate frequency signal obtained from described signal receiving module and Digital Signal Processing obtains described demodulating data and is transferred to described digital processing circuit
Described radio frequency reference frequencies synthesizer, is connected with band pass filter with described benchmark high stability crystal oscillator, obtains radio frequency reference frequencies for carrying out Digital Frequency Synthesize and digital-to-analogue conversion to described driving frequency and this radio frequency reference frequencies is transferred to described band pass filter,
Described band pass filter, is connected with frequency synthesizer with described radio frequency reference frequencies synthesizer, for being transferred to described frequency synthesizer to after described radio frequency reference frequencies bandpass filtering,
Described frequency synthesizer, be connected with signal emission module with described band pass filter, signal receiving module, after process of frequency multiplication is done to the radio frequency reference frequencies after bandpass filtering, obtain described variable frequency work frequency, give described signal receiving module and signal emission module by described variable frequency work frequency transmission.
As prioritization scheme, described digital receive circuit comprises digital demodulation signal module and modulus sampling module further;
Described digital demodulation signal module and modulus sampling module work under same described driving frequency,
Described modulus sampling module, be connected with signal receiving module with described benchmark high stability crystal oscillator, digital demodulation signal module respectively, described digital demodulation signal module is transferred to after the described reception analog intermediate frequency signal obtained from described signal receiving module being done to modulus sampling
Described digital demodulation signal module, is connected with digital processing circuit with described benchmark high stability crystal oscillator, modulus sampling module, obtains described demodulating data for doing demodulation process to the reception analog intermediate frequency signal after modulus sampling and is transferred to described digital processing circuit.
As prioritization scheme, described radio frequency reference frequencies
synthesizercomprise digital frequency synthesizer and digital to analog converter further;
Described digital frequency synthesizer and digital to analog converter work under same described driving frequency,
Described digital frequency synthesizer, is connected with digital to analog converter with described benchmark high stability crystal oscillator, is transferred to described digital to analog converter for carrying out described driving frequency after Digital Frequency Synthesize obtains numerical reference frequency,
Described digital to analog converter, is connected with described benchmark high stability crystal oscillator, digital frequency synthesizer, band pass filter, obtains described radio frequency reference frequencies for doing digital-to-analogue conversion to described numerical reference frequency under described driving frequency and is transferred to described band pass filter.
As prioritization scheme, described signal receiving module comprise further connect successively low noise amplifier, mixing and filter processor, gain controller and high pass filter; Described low noise amplifier is also connected with described antenna, and described high pass filter is also connected with described digital signal processing module;
Described low noise amplifier is used for doing low noise amplification process to described Received signal strength and obtains amplifying signal,
Described mixing and filter processor are used for doing described amplifying signal with described variable frequency work frequency once receiving frequency conversion and filtering and obtaining and once receive frequency variation signal and be transferred to described gain controller,
Described gain controller is used for the described frequency variation signal that once receives is carried out to the once reception frequency variation signal of preset gain control acquisition preset gain and is transferred to described high pass filter,
Described high pass filter is used for carrying out high-pass filtering to the once reception frequency variation signal of described preset gain and obtains described reception analog intermediate frequency signal, and this reception analog intermediate frequency signal is transferred to described digital signal processing module.
As prioritization scheme, described signal emission module comprises connected modulator and amplifier further; Described modulator is also connected with described digital signal processing module, and described amplifier is also connected with described antenna;
Described modulator is used for that described baseband signal is carried out modulation acquisition with described variable frequency work frequency and once launches frequency variation signal, and this is once launched frequency variation signal and be transferred to described amplifier,
Described amplifier is used for amplifying to transmit described in rear acquisition be transferred to described antenna to described frequency variation signal of once launching.
Based on same inventive concept, present invention also offers a kind of receiving and transmitting signal processing method, in above-described generalization transceiver, comprise Signal reception flow process and signal transmitting flow process,
Described Signal reception flow process comprises:
S101: signal receiving module is converted to reception analog intermediate frequency signal and sends to described digital signal processing module after the Received signal strength obtained from antenna is once received frequency-conversion processing;
S102: described reception analog intermediate frequency signal is converted to demodulating data and is transferred to described digital processing circuit by digital signal processing module;
Described signal is launched flow process and is comprised:
S201: the data to be launched obtained from described digital processing circuit are converted to base band signal transmission to described signal emission module by digital signal processing module,
S202: signal emission module is converted to transmit after the baseband signal obtained from digital signal processing module is once launched frequency-conversion processing exports to antenna;
The once transmitting frequency conversion once receiving frequency conversion and signal emission module that digital signal processing module is signal receiving module provides same variable frequency work frequency.
As prioritization scheme, it is characterized in that, described signal receiving module comprise further connect successively low noise amplifier, mixing and filter processor, gain controller and high pass filter; Described digital signal processing module comprises benchmark high stability crystal oscillator, digital demodulation signal module and modulus sampling module further;
Described benchmark high stability crystal oscillator provides same driving frequency for described digital demodulation signal module and modulus sampling module;
Described Signal reception flow process specifically comprises:
A1: the Received signal strength obtained from antenna is carried out low noise amplification and obtains amplifying signal by described low noise amplifier;
A2: described mixing and filter processor to do described amplifying signal with described variable frequency work frequency and once receive frequency conversion and filtering and obtain and once receive frequency variation signal;
A3: described gain controller carries out to the described frequency variation signal that once receives the once reception frequency variation signal that preset gain controls to obtain preset gain
A4: the once reception frequency variation signal of described high pass filter to described preset gain carries out high-pass filtering and obtain described reception analog intermediate frequency signal, and this reception analog intermediate frequency signal is transferred to described modulus sampling module;
A5: described modulus sampling module is transferred to described digital demodulation signal module after doing modulus sampling to the described reception analog intermediate frequency signal obtained from described high pass filter;
A6: described digital demodulation signal module is done demodulation process to the reception analog intermediate frequency signal after modulus sampling and obtained described demodulating data and be transferred to described digital processing circuit.
As prioritization scheme, described digital signal processing module comprises benchmark high stability crystal oscillator, baseband signal maker, digital frequency synthesizer, digital to analog converter, band pass filter, frequency synthesizer further, and described signal receiving module comprises connected modulator and amplifier further;
Described benchmark high stability crystal oscillator provides same driving frequency for described baseband signal maker, digital frequency synthesizer and digital to analog converter;
Described signal is launched flow process and is specifically comprised:
Described baseband signal maker to be sampled to the data to be launched received from described digital processing circuit with described driving frequency and modulation treatment generates base band signal transmission to described modulator;
Described digital frequency synthesizer carries out being transferred to described digital to analog converter after Digital Frequency Synthesize obtains numerical reference frequency to described driving frequency, described digital to analog converter does digital-to-analogue conversion to described numerical reference frequency and obtains radio frequency reference frequencies and be transferred to described band pass filter under described driving frequency, described band pass filter is transferred to described frequency synthesizer to after described radio frequency reference frequencies bandpass filtering, described frequency synthesizer obtains described variable frequency work frequency after doing process of frequency multiplication to the radio frequency reference frequencies after bandpass filtering, described modulator is given by described variable frequency work frequency transmission,
Described baseband signal is carried out modulation with described variable frequency work frequency and is obtained and once launch frequency variation signal by described modulator, and this is once launched frequency variation signal and be transferred to described amplifier;
Described amplifier is used for amplifying to transmit described in rear acquisition be transferred to described antenna to described frequency variation signal of once launching.
Compared with prior art, the present invention has following beneficial effect:
The present invention adopts the single-conversion scheme of configurable reference frequency to have configurability and high integration feature simultaneously, because benchmark job frequency is constant, only changes partial software configuration item and can realize versatility.Because radio frequency part height is integrated, and frequency synthesizer and frequency mixer all have certain operating frequency range, when changing operating frequency parameter in certain frequency range, only needing the filter changing sending and receiving end end, further increasing versatility.The present invention has higher integrated level, and has good versatility.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, obviously, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.In accompanying drawing:
Fig. 1 is the theory diagram of a kind of universal receiver transmitter in multiple embodiment;
Fig. 2 is the theory diagram of the another kind of universal receiver transmitter in multiple embodiment.
Embodiment
Hereafter in the mode of specific embodiment, the present invention is described in detail by reference to the accompanying drawings.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that the embodiment that can also use other, or the amendment on 26S Proteasome Structure and Function is carried out to the embodiment enumerated herein, and can not depart from the scope and spirit of the present invention.
In the embodiment of a kind of universal receiver transmitter provided by the invention, as shown in Figure 1, comprise signal receiving module, signal emission module and digital signal processing module;
Described signal receiving module, is connected with digital signal processing module with described antenna respectively, receives analog intermediate frequency signal send to described digital signal processing module for being converted to after the Received signal strength obtained from antenna is once received frequency-conversion processing;
Described signal emission module, is connected with digital signal processing module with described antenna respectively, exports to antenna for being converted to transmit after the baseband signal obtained from digital signal processing module is once launched frequency-conversion processing;
Described digital signal processing module, is connected with described signal receiving module, signal emission module, digital processing circuit respectively, for:
The described reception analog intermediate frequency signal obtained from described signal receiving module is converted to demodulating data and is transferred to described digital processing circuit,
The data to be launched obtained from described digital processing circuit are converted to base band signal transmission to described signal emission module,
Same variable frequency work frequency is provided with the once transmitting frequency conversion once receiving frequency conversion and signal emission module for described signal receiving module.
In the universal receiver transmitter described in the present embodiment, described digital signal processing module comprises benchmark high stability crystal oscillator, baseband signal maker, digital receive circuit, radio frequency reference frequencies further
synthesizer, band pass filter and frequency synthesizer;
Described benchmark high stability crystal oscillator, is connected with described baseband signal maker, digital receive circuit, radio frequency reference frequencies synthesizer respectively, for providing same driving frequency for described baseband signal maker, digital receive circuit, radio frequency reference frequencies synthesizer,
Described baseband signal maker, be connected with described benchmark high stability crystal oscillator, digital processing circuit, signal emission module respectively, for to sample to the data to be launched received from described digital processing circuit with described driving frequency and modulation treatment generates base band signal transmission to described signal emission module
Described digital receive circuit, be connected with described benchmark high stability crystal oscillator, digital processing circuit, signal receiving module respectively, for doing modulus sampling with described driving frequency to the described reception analog intermediate frequency signal obtained from described signal receiving module and Digital Signal Processing obtains described demodulating data and is transferred to described digital processing circuit
Described radio frequency reference frequencies
synthesizer, be connected with band pass filter with described benchmark high stability crystal oscillator, obtain radio frequency reference frequencies for carrying out Digital Frequency Synthesize and digital-to-analogue conversion to described driving frequency and this radio frequency reference frequencies is transferred to described band pass filter,
Described band pass filter, with described radio frequency reference frequencies
synthesizer andfrequency synthesizer is connected, for being transferred to described frequency synthesizer to after described radio frequency reference frequencies bandpass filtering,
Described frequency synthesizer, be connected with signal emission module with described band pass filter, signal receiving module, after process of frequency multiplication is done to the radio frequency reference frequencies after bandpass filtering, obtain described variable frequency work frequency, give described signal receiving module and signal emission module by described variable frequency work frequency transmission.
In the embodiment of a kind of universal receiver transmitter as shown in Figure 2, described digital receive circuit comprises digital demodulation signal module and modulus sampling module further;
Described digital demodulation signal module and modulus sampling module work under same described driving frequency,
Described modulus sampling module, be connected with signal receiving module with described benchmark high stability crystal oscillator, digital demodulation signal module respectively, described digital demodulation signal module is transferred to after the described reception analog intermediate frequency signal obtained from described signal receiving module being done to modulus sampling
Described digital demodulation signal module, is connected with digital processing circuit with described benchmark high stability crystal oscillator, modulus sampling module, obtains described demodulating data for doing demodulation process to the reception analog intermediate frequency signal after modulus sampling and is transferred to described digital processing circuit.
In the embodiment of a kind of universal receiver transmitter as shown in Figure 2, described radio frequency reference frequencies
synthesizercomprise digital frequency synthesizer and digital to analog converter further;
Described digital frequency synthesizer and digital to analog converter work under same described driving frequency,
Described digital frequency synthesizer, is connected with digital to analog converter with described benchmark high stability crystal oscillator, is transferred to described digital to analog converter for carrying out described driving frequency after Digital Frequency Synthesize obtains numerical reference frequency,
Described digital to analog converter, is connected with described benchmark high stability crystal oscillator, digital frequency synthesizer, band pass filter, obtains described radio frequency reference frequencies for doing digital-to-analogue conversion to described numerical reference frequency under described driving frequency and is transferred to described band pass filter.
In the universal receiver transmitter described in the present embodiment, described signal receiving module comprise further connect successively low noise amplifier, mixing and filter processor, gain controller and high pass filter; Described low noise amplifier is also connected with described antenna, and described high pass filter is also connected with described digital signal processing module;
Described low noise amplifier is used for doing low noise amplification process to described Received signal strength and obtains amplifying signal,
Described mixing and filter processor are used for doing described amplifying signal with described variable frequency work frequency once receiving frequency conversion and filtering and obtaining and once receive frequency variation signal and be transferred to described gain controller,
Described gain controller is used for the described frequency variation signal that once receives is carried out to the once reception frequency variation signal of preset gain control acquisition preset gain and is transferred to described high pass filter,
Described high pass filter is used for carrying out high-pass filtering to the once reception frequency variation signal of described preset gain and obtains described reception analog intermediate frequency signal, and this reception analog intermediate frequency signal is transferred to described digital signal processing module.
In the universal receiver transmitter described in the present embodiment, described signal emission module comprises connected modulator and amplifier further; Described modulator is also connected with described digital signal processing module, and described amplifier is also connected with described antenna;
Described modulator is used for that described baseband signal is carried out modulation acquisition with described variable frequency work frequency and once launches frequency variation signal, and this is once launched frequency variation signal and be transferred to described amplifier,
Described amplifier is used for amplifying to transmit described in rear acquisition be transferred to described antenna to described frequency variation signal of once launching.
Fig. 1 is principle composition frame chart of the present invention.Based on the benchmark high stability crystal oscillator operating frequency of fixing transceiver, be described baseband signal maker, driving frequency that digital receive circuit, digital frequency synthesizer provide, the present embodiment is only changed the software configuration item of described Digital Frequency Synthesize module, obtains the accurate radio frequency reference frequencies required for the signal receiving module of transceiver and signal emission module in Digital Frequency Synthesize mode.By frequency synthesizer, form the transmitting operating frequency of transceiver and simultaneously as the mixing frequencies of receive path, realize single-conversion function.By changing software configuration item, digital demodulation is carried out to the frequency of receiving intermediate frequency signal.By carrying out filtering process between digital baseband part and transceiver channel part, reducing noise transfer between the two, improving synthesized frequency signal quality, to meet the performance index of transceiver.
Also comprise a kind of receiving and transmitting signal processing method based on the universal receiver transmitter described in the present embodiment, the method comprises Signal reception flow process and signal launches flow process,
Described Signal reception flow process comprises:
S101: signal receiving module is converted to reception analog intermediate frequency signal and sends to described digital signal processing module after the Received signal strength obtained from antenna is once received frequency-conversion processing;
S102: described reception analog intermediate frequency signal is converted to demodulating data and is transferred to described digital processing circuit by digital signal processing module;
Described signal is launched flow process and is comprised:
S201: the data to be launched obtained from described digital processing circuit are converted to base band signal transmission to described signal emission module by digital signal processing module,
S202: signal emission module is converted to transmit after the baseband signal obtained from digital signal processing module is once launched frequency-conversion processing exports to antenna;
The once transmitting frequency conversion once receiving frequency conversion and signal emission module that digital signal processing module is signal receiving module provides same variable frequency work frequency.
Signal receiving module described in the method comprise further connect successively low noise amplifier, mixing and filter processor, gain controller and high pass filter; Described digital signal processing module comprises benchmark high stability crystal oscillator, digital demodulation signal module and modulus sampling module further;
Described benchmark high stability crystal oscillator provides same driving frequency for described digital demodulation signal module and modulus sampling module;
Described Signal reception flow process specifically comprises:
A1: the Received signal strength obtained from antenna is carried out low noise amplification and obtains amplifying signal by described low noise amplifier;
A2: described mixing and filter processor to do described amplifying signal with described variable frequency work frequency and once receive frequency conversion and filtering and obtain and once receive frequency variation signal;
A3: described gain controller carries out to the described frequency variation signal that once receives the once reception frequency variation signal that preset gain controls to obtain preset gain
A4: the once reception frequency variation signal of described high pass filter to described preset gain carries out high-pass filtering and obtain described reception analog intermediate frequency signal, and this reception analog intermediate frequency signal is transferred to described modulus sampling module;
A5: described modulus sampling module is transferred to described digital demodulation signal module after doing modulus sampling to the described reception analog intermediate frequency signal obtained from described high pass filter;
A6: described digital demodulation signal module is done demodulation process to the reception analog intermediate frequency signal after modulus sampling and obtained described demodulating data and be transferred to described digital processing circuit.
Digital signal processing module described in the method comprises benchmark high stability crystal oscillator, baseband signal maker, digital frequency synthesizer, digital to analog converter, band pass filter, frequency synthesizer further, and described signal receiving module comprises connected modulator and amplifier further;
Described benchmark high stability crystal oscillator provides same driving frequency for described baseband signal maker, digital frequency synthesizer and digital to analog converter;
Described signal is launched flow process and is specifically comprised:
Described baseband signal maker to be sampled to the data to be launched received from described digital processing circuit with described driving frequency and modulation treatment generates base band signal transmission to described modulator;
Described digital frequency synthesizer carries out being transferred to described digital to analog converter after Digital Frequency Synthesize obtains numerical reference frequency to described driving frequency, described digital to analog converter does digital-to-analogue conversion to described numerical reference frequency and obtains radio frequency reference frequencies and be transferred to described band pass filter under described driving frequency, described band pass filter is transferred to described frequency synthesizer to after described radio frequency reference frequencies bandpass filtering, described frequency synthesizer obtains described variable frequency work frequency after doing process of frequency multiplication to the radio frequency reference frequencies after bandpass filtering, described modulator is given by described variable frequency work frequency transmission,
Described baseband signal is carried out modulation with described variable frequency work frequency and is obtained and once launch frequency variation signal by described modulator, and this is once launched frequency variation signal and be transferred to described amplifier;
Described amplifier is used for amplifying to transmit described in rear acquisition be transferred to described antenna to described frequency variation signal of once launching.
In specific implementation process,
The radio frequency reference frequencies of transceiver is produced through digital processing based on providing the high stability crystal oscillator of fixed drive frequency frequency;
Directly produce variable frequency work frequency by frequency synthesizer, and give described mixing and filter processor and modulator by this variable frequency work frequency transmission, thus realize once launching frequency conversion and once receiving frequency conversion;
High stability crystal oscillator based on steady job frequency is sampled to receiving analog intermediate frequency signal and processes the demodulated analog signal obtaining numeral;
To through mixing and filter processor, gain controller process down-conversion signal carry out high-pass filtering process, bandpass filtering treatment is carried out to digital composite frequency device, be conducive to the base noise of isolating digital signal processing module, reduce the input noise of frequency synthesizer, improve the phase noise of frequency synthesizer output signal.
The present invention has good versatility and good portability.The present invention can be applied to designing and developing of the similar unit product of aerospace model, reduces the construction cycle of unit, and meets the reliability demand constantly promoted.
Based on fixing transceiver benchmark job frequency, software configuration item is changed, obtains the accurate reference frequency required for transceiver transceiver channel in Digital Frequency Synthesize mode.By frequency synthesizer, form the operating frequency of transceiver transmit module and simultaneously as the mixing frequencies of receiver module, realize single-conversion function.By changing software configuration item, digital demodulation is carried out to the frequency receiving analog intermediate frequency signal.By filtering process, reduce the noise transfer between digital signal and analog signal, improve synthesized frequency signal quality, to meet the performance index of transceiver.
Transmit as broadband signal in the present embodiment, band is wider than 10M, and carrier frequency is S-band (about 2G), for transmitting, have employed digital forming and analogue low pass filtering to improve the outer supression of band in the modulates baseband signals processing procedure of modulator; For acknowledge(ment) signal, by the digital filtering technique in bandpass filtering treatment and signal transacting after mixing, the problem of the outer interference of band can well be solved.
The present invention on the basis of single-conversion, to reception intermediate frequency and reference frequency carry out digitlization configuration, greatly improve hardware unitized while, improve integrated level and the reliability of transceiver.
The foregoing is only preferred embodiment of the present invention, those skilled in the art know, without departing from the spirit and scope of the present invention, can carry out various change or equivalent replacement to these characteristic sum embodiments.In addition, under the teachings of the present invention, can modify to adapt to concrete situation and material to these characteristic sum embodiments and can not the spirit and scope of the present invention be departed from.Therefore, the present invention is not by the restriction of specific embodiment disclosed herein, and the embodiment in the right of all the application of falling into all belongs to protection scope of the present invention.
Claims (9)
1. a universal receiver transmitter, is connected with antenna and digital processing circuit, it is characterized in that, comprises signal receiving module, signal emission module and digital signal processing module;
Described signal receiving module, is connected with digital signal processing module with described antenna respectively, receives analog intermediate frequency signal send to described digital signal processing module for being converted to after the Received signal strength obtained from antenna is once received frequency-conversion processing;
Described signal emission module, is connected with digital signal processing module with described antenna respectively, exports to antenna for being converted to transmit after the baseband signal obtained from digital signal processing module is once launched frequency-conversion processing;
Described digital signal processing module, is connected with described signal receiving module, signal emission module, digital processing circuit respectively, for:
The described reception analog intermediate frequency signal obtained from described signal receiving module is converted to demodulating data and is transferred to described digital processing circuit,
The data to be launched obtained from described digital processing circuit are converted to base band signal transmission to described signal emission module,
Same variable frequency work frequency is provided with the once transmitting frequency conversion once receiving frequency conversion and signal emission module for described signal receiving module.
2. universal receiver transmitter according to claim 1, is characterized in that, described digital signal processing module comprises benchmark high stability crystal oscillator, baseband signal maker, digital receive circuit, radio frequency reference frequencies further
synthesizer, band pass filter and frequency synthesizer;
Described benchmark high stability crystal oscillator, is connected with described baseband signal maker, digital receive circuit, radio frequency reference frequencies synthesizer respectively, for providing same driving frequency for described baseband signal maker, digital receive circuit, radio frequency reference frequencies synthesizer,
Described baseband signal maker, be connected with described benchmark high stability crystal oscillator, digital processing circuit, signal emission module respectively, for to sample to the data to be launched received from described digital processing circuit with described driving frequency and modulation treatment generates base band signal transmission to described signal emission module
Described digital receive circuit, be connected with described benchmark high stability crystal oscillator, digital processing circuit, signal receiving module respectively, for doing modulus sampling with described driving frequency to the described reception analog intermediate frequency signal obtained from described signal receiving module and Digital Signal Processing obtains described demodulating data and is transferred to described digital processing circuit
Described radio frequency reference frequencies synthesizer, is connected with band pass filter with described benchmark high stability crystal oscillator, obtains radio frequency reference frequencies for carrying out Digital Frequency Synthesize and digital-to-analogue conversion to described driving frequency and this radio frequency reference frequencies is transferred to described band pass filter,
Described band pass filter, with described radio frequency reference frequencies
synthesizer andfrequency synthesizer is connected, for being transferred to described frequency synthesizer to after described radio frequency reference frequencies bandpass filtering,
Described frequency synthesizer, be connected with signal emission module with described band pass filter, signal receiving module, after process of frequency multiplication is done to the radio frequency reference frequencies after bandpass filtering, obtain described variable frequency work frequency, give described signal receiving module and signal emission module by described variable frequency work frequency transmission.
3. universal receiver transmitter according to claim 2, is characterized in that, described digital receive circuit comprises digital demodulation signal module and modulus sampling module further;
Described digital demodulation signal module and modulus sampling module work under same described driving frequency,
Described modulus sampling module, be connected with signal receiving module with described benchmark high stability crystal oscillator, digital demodulation signal module respectively, described digital demodulation signal module is transferred to after the described reception analog intermediate frequency signal obtained from described signal receiving module being done to modulus sampling
Described digital demodulation signal module, is connected with digital processing circuit with described benchmark high stability crystal oscillator, modulus sampling module, obtains described demodulating data for doing demodulation process to the reception analog intermediate frequency signal after modulus sampling and is transferred to described digital processing circuit.
4. universal receiver transmitter according to claim 2, is characterized in that, described radio frequency reference frequencies synthesizer comprises digital frequency synthesizer and digital to analog converter further;
Described digital frequency synthesizer and digital to analog converter work under same described driving frequency,
Described digital frequency synthesizer, is connected with digital to analog converter with described benchmark high stability crystal oscillator, is transferred to described digital to analog converter for carrying out described driving frequency after Digital Frequency Synthesize obtains numerical reference frequency,
Described digital to analog converter, is connected with described benchmark high stability crystal oscillator, digital frequency synthesizer, band pass filter, obtains described radio frequency reference frequencies for doing digital-to-analogue conversion to described numerical reference frequency under described driving frequency and is transferred to described band pass filter.
5. universal receiver transmitter according to claim 1, is characterized in that, described signal receiving module comprise further connect successively low noise amplifier, mixing and filter processor, gain controller and high pass filter; Described low noise amplifier is also connected with described antenna, and described high pass filter is also connected with described digital signal processing module;
Described low noise amplifier is used for doing low noise amplification process to described Received signal strength and obtains amplifying signal,
Described mixing and filter processor are used for doing described amplifying signal with described variable frequency work frequency once receiving frequency conversion and filtering and obtaining and once receive frequency variation signal and be transferred to described gain controller,
Described gain controller is used for the described frequency variation signal that once receives is carried out to the once reception frequency variation signal of preset gain control acquisition preset gain and is transferred to described high pass filter,
Described high pass filter is used for carrying out high-pass filtering to the once reception frequency variation signal of described preset gain and obtains described reception analog intermediate frequency signal, and this reception analog intermediate frequency signal is transferred to described digital signal processing module.
6. universal receiver transmitter according to claim 1, is characterized in that, described signal emission module comprises connected modulator and amplifier further; Described modulator is also connected with described digital signal processing module, and described amplifier is also connected with described antenna;
Described modulator is used for that described baseband signal is carried out modulation acquisition with described variable frequency work frequency and once launches frequency variation signal, and this is once launched frequency variation signal and be transferred to described amplifier,
Described amplifier is used for amplifying to transmit described in rear acquisition be transferred to described antenna to described frequency variation signal of once launching.
7. a receiving and transmitting signal processing method, is characterized in that, in the generalization transceiver described in claim 1-6, comprises Signal reception flow process and signal transmitting flow process,
Described Signal reception flow process comprises:
S101: signal receiving module is converted to reception analog intermediate frequency signal and sends to described digital signal processing module after the Received signal strength obtained from antenna is once received frequency-conversion processing;
S102: described reception analog intermediate frequency signal is converted to demodulating data and is transferred to described digital processing circuit by digital signal processing module;
Described signal is launched flow process and is comprised:
S201: the data to be launched obtained from described digital processing circuit are converted to base band signal transmission to described signal emission module by digital signal processing module,
S202: signal emission module is converted to transmit after the baseband signal obtained from digital signal processing module is once launched frequency-conversion processing exports to antenna;
The once transmitting frequency conversion once receiving frequency conversion and signal emission module that digital signal processing module is signal receiving module provides same variable frequency work frequency.
8. method according to claim 7, is characterized in that, described signal receiving module comprise further connect successively low noise amplifier, mixing and filter processor, gain controller and high pass filter; Described digital signal processing module comprises benchmark high stability crystal oscillator, digital demodulation signal module and modulus sampling module further;
Described benchmark high stability crystal oscillator provides same driving frequency for described digital demodulation signal module and modulus sampling module;
Described Signal reception flow process specifically comprises:
A1: the Received signal strength obtained from antenna is carried out low noise amplification and obtains amplifying signal by described low noise amplifier;
A2: described mixing and filter processor to do described amplifying signal with described variable frequency work frequency and once receive frequency conversion and filtering and obtain and once receive frequency variation signal;
A3: described gain controller carries out to the described frequency variation signal that once receives the once reception frequency variation signal that preset gain controls to obtain preset gain
A4: the once reception frequency variation signal of described high pass filter to described preset gain carries out high-pass filtering and obtain described reception analog intermediate frequency signal, and this reception analog intermediate frequency signal is transferred to described modulus sampling module;
A5: described modulus sampling module is transferred to described digital demodulation signal module after doing modulus sampling to the described reception analog intermediate frequency signal obtained from described high pass filter;
A6: described digital demodulation signal module is done demodulation process to the reception analog intermediate frequency signal after modulus sampling and obtained described demodulating data and be transferred to described digital processing circuit.
9. method according to claim 7, it is characterized in that, described digital signal processing module comprises benchmark high stability crystal oscillator, baseband signal maker, digital frequency synthesizer, digital to analog converter, band pass filter, frequency synthesizer further, and described signal receiving module comprises connected modulator and amplifier further;
Described benchmark high stability crystal oscillator provides same driving frequency for described baseband signal maker, digital frequency synthesizer and digital to analog converter;
Described signal is launched flow process and is specifically comprised:
Described baseband signal maker to be sampled to the data to be launched received from described digital processing circuit with described driving frequency and modulation treatment generates base band signal transmission to described modulator;
Described digital frequency synthesizer carries out being transferred to described digital to analog converter after Digital Frequency Synthesize obtains numerical reference frequency to described driving frequency, described digital to analog converter does digital-to-analogue conversion to described numerical reference frequency and obtains radio frequency reference frequencies and be transferred to described band pass filter under described driving frequency, described band pass filter is transferred to described frequency synthesizer to after described radio frequency reference frequencies bandpass filtering, described frequency synthesizer obtains described variable frequency work frequency after doing process of frequency multiplication to the radio frequency reference frequencies after bandpass filtering, described modulator is given by described variable frequency work frequency transmission,
Described baseband signal is carried out modulation with described variable frequency work frequency and is obtained and once launch frequency variation signal by described modulator, and this is once launched frequency variation signal and be transferred to described amplifier;
Described amplifier is used for amplifying to transmit described in rear acquisition be transferred to described antenna to described frequency variation signal of once launching.
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| CN105634564A (en) * | 2015-12-18 | 2016-06-01 | 张连科 | Electromagnetic wave analog digital high band transmission system and transmission method thereof |
| CN107528629A (en) * | 2017-09-30 | 2017-12-29 | 湖南迈克森伟电子科技有限公司 | Satellite TT number passes broadcast integrated communication system |
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| CN107528629A (en) * | 2017-09-30 | 2017-12-29 | 湖南迈克森伟电子科技有限公司 | Satellite TT number passes broadcast integrated communication system |
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| CN104579410B (en) | 2017-07-28 |
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