CN115276826B - Terahertz sense-through integrated system and method based on spin source - Google Patents
Terahertz sense-through integrated system and method based on spin source Download PDFInfo
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Abstract
The invention provides a terahertz sense-through integrated system and method based on a spin source, wherein the system comprises the following components: the system comprises a spin source array, a terahertz transceiver, a communication module, a sensing module and a scheduler; the scheduler adopts different scheduling strategies according to different application scenes, the sensing module schedules the spin source array to emit terahertz wave pulses to all directions according to the different scheduling strategies, analyzes the feedback echo information and generates a sensing result; the communication module is used for integrating remote user information to be transmitted, and controlling the spin source array to transmit the information to be transmitted by the remote user and the sensing result according to the information modulation modes determined by different scheduling strategies; and the spin source array is used for generating terahertz waves and modulating the terahertz waves or demodulating the incoming terahertz waves. According to the invention, the spin source is utilized to realize the transceiving and modulation, the link integrating the modulation and the transceiving is completed, and the terahertz adjustable property of the spin source is utilized to realize the multifunctional communication sensing function.
Description
Technical Field
The document relates to the technical field of communication perception, in particular to a terahertz sense-through integrated system and method based on a spin source.
Background
The sense of general integration is receiving a great deal of attention from the industry as one of the key technologies of 6G mobile networks. The terahertz wave band has the characteristics of strong penetrability and wide frequency spectrum, so that the terahertz wave band has great advantages in the aspect of realizing the sense of ventilation integration. The existing terahertz sense-of-general integrated system can perform user sensing (such as visual sensing, publication number: CN 113595608A) by using various means, or can realize signal superposition (such as chirping multiplexing, publication number: CN 113328810A) by combining terahertz communication with high-precision terahertz sensing signals. Terahertz emission in these systems relies mainly on conventional architecture and no modification of the physical layer is made.
The traditional terahertz emission modes are two types, one is an optical method, an optical-electric combination method is adopted, and an optical heterodyne method is utilized to generate terahertz signals with the frequency being the difference between the frequencies of two beams of light. One is an all-solid-state electronic link, like a microwave radio link, that utilizes a mixer to up-convert baseband or intermediate frequency modulated signals to the terahertz frequency band. For an optical heterodyne link, the transmitting power is low, the system volume is large, the energy consumption is high, the adjustment is not easy, the optical heterodyne link is suitable for ground short-distance high-speed communication, and the optical heterodyne link is difficult to use for long-distance communication. For the electronic link, in the terahertz modulation process, user digital information is modulated to an analog domain by a digital-to-analog converter, and then the baseband signal is modulated to an intermediate frequency region and modulated to a terahertz frequency band through frequency mixing and frequency multiplication. The process has complex link structure and high energy consumption, and can cause distortion of digital signals.
Due to the limitation of the device, the modulation of the corresponding rate cannot be realized after the high-speed digital signal is input into the digital-analog converter, and the whole link rate is limited by the sampling frequency of the digital-analog converter. At present, the existing system mainly performs user position calibration and communication sensing signal fusion, is not designed aiming at rich application scenes, does not fully utilize terahertz properties such as feature absorption and the like, changes waveforms according to actual requirements to realize detection and sensing of target requirements, and cannot meet the requirements of the Internet of things.
Disclosure of Invention
The invention provides a terahertz sense-on-all integrated system and method based on a spin source, and aims to solve the problems.
The invention provides a terahertz sense-through integrated system based on a spin source, which comprises the following components: the system comprises a spin source array, a terahertz transceiver, a communication module, a sensing module and a scheduler;
the scheduler is in communication connection with the sensing module and the communication module and is used for adopting different scheduling strategies according to different application scenes and configuring the different scheduling strategies to the communication module and the sensing module;
the sensing module is in communication connection with the scheduler and the spin source array, and is used for scheduling the spin source array to emit terahertz wave pulses to all directions according to different scheduling strategies when emitting, analyzing terahertz wave echo signals received by the terahertz transceiver when receiving, generating a sensing result and storing user properties and states in the sensing result;
the communication module is in communication connection with the scheduler and the spin source array, and is used for integrating information required to be transmitted by a far-end user during transmitting, controlling the spin source array to transmit the information required to be transmitted by the far-end user and the sensing result according to the information modulation modes determined by different scheduling strategies, and analyzing terahertz wave signals received by the terahertz transceiver and generating a receiving result during receiving;
the spin source array is in communication connection with the terahertz transceiver, the communication module and the sensing module, and is used for generating terahertz waves during transmission and modulating the terahertz waves during transmission; when receiving, demodulating according to the analog signal transmitted by the terahertz transceiver;
the terahertz transceiver is in communication connection with the spin source array and is used for amplifying terahertz waves emitted by the spin source array during emission; and the terahertz wave signal is used for receiving terahertz wave signals radiated to the system during receiving.
The invention provides a terahertz sense-through integration method based on a spin source, which comprises the following steps:
s701, adopting different scheduling strategies according to application scenes through a scheduler;
s702, a sensing module dispatches a spin source array to emit terahertz wave pulses through different dispatching strategies, and after step S705, digital signals generated by echoes are analyzed and sensing results are generated;
s703, integrating information required to be transmitted by a far-end user by a communication module, converting the information required to be transmitted by the far-end user and a sensing result into a digital signal sequence according to an information modulation mode determined by different modulation strategies, and transmitting modulated terahertz waves through a spin source array;
s704, a terahertz transceiver receives terahertz pulses sent by the spin source array and carries out enhanced emission on terahertz;
s705, when receiving, the terahertz transceiver receives the terahertz signal transmitted by the far-end user, the terahertz signal transmitted by the far-end user is transmitted into the spin source array in the form of an analog signal, and the spin source array converts the analog signal into a digital signal;
s706, the communication module receives the digital signal sequence, analyzes the digital signal sequence, restores the initial signal, and transmits the initial signal to the cloud.
By adopting the embodiment of the invention, the sense of passing utilizes the spin source to realize both emission and modulation, and can convert the digital electric signal into the characteristic of the analog terahertz signal, thus completing the link integrating modulation and receiving. In addition, by utilizing the property that the spin source is adjustable to the amplitude, the phase and the chirality of terahertz in a broadband range, a system is constructed, and the multifunctional communication sensing function close to an actual scene is realized.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
For a clearer description of one or more embodiments of the present description or of the solutions of the prior art, the drawings that are necessary for the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description that follow are only some of the embodiments described in the description, from which, for a person skilled in the art, other drawings can be obtained without inventive faculty.
FIG. 1 is a schematic diagram of a terahertz sense-on-all system based on a spin source according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a spin source array transfer in accordance with an embodiment of the present invention;
fig. 3 is a flowchart of a terahertz sense-on-all method based on a spin source according to an embodiment of the invention.
Detailed Description
In order to enable a person skilled in the art to better understand the technical solutions in one or more embodiments of the present specification, the technical solutions in one or more embodiments of the present specification will be clearly and completely described below with reference to the drawings in one or more embodiments of the present specification, and it is obvious that the described embodiments are only some embodiments of the present specification, not all embodiments. All other embodiments, which can be made by one or more embodiments of the present disclosure without inventive faculty, are intended to be within the scope of the present disclosure.
System embodiment
According to an embodiment of the present invention, there is provided a terahertz sense integration system based on a spin source, and fig. 1 is a schematic diagram of the terahertz sense integration system based on the spin source according to the embodiment of the present invention, as shown in fig. 1, where the terahertz sense integration system based on the spin source according to the embodiment of the present invention includes: a spin source array 12, a terahertz transceiver 13, a communication module 14, a perception module 11, and a scheduler 10;
the scheduler 10 is in communication connection with the sensing module 11 and the communication module 14, and is used for adopting different scheduling strategies according to different application scenes and configuring the different scheduling strategies to the communication module and the sensing module;
the sensing module 11 is in communication connection with the scheduler 10 and the spin source array 12, and is used for scheduling the spin source array to transmit terahertz wave pulses to all directions according to different scheduling strategies during transmitting, analyzing terahertz wave echo signals received by the terahertz transceiver during receiving, generating a sensing result, and storing user properties and states in the sensing result;
the communication module 14 is in communication connection with the scheduler 10 and the spin source matrix 12, and is used for integrating information required to be transmitted by a far-end user during transmitting, controlling the spin source array to transmit the information required to be transmitted by the far-end user and a sensing result according to an information modulation mode determined by different scheduling strategies, and analyzing terahertz wave signals received by the terahertz transceiver and generating a receiving result during receiving;
the spin source array 12 is in communication connection with the terahertz transceiver, the communication module and the sensing module, and is used for generating terahertz waves during transmission and modulating the terahertz waves during transmission; when receiving, demodulating according to the analog signal transmitted by the terahertz transceiver;
the terahertz transceiver 13 is in communication connection with the spin source array 12 and is used for amplifying terahertz waves emitted by the spin source array during emission; and the terahertz wave signal is used for receiving terahertz wave signals radiated to the system during receiving.
Terahertz refers to electromagnetic waves with the frequency in the range of 0.1THz-10THz, and due to strong penetrability, the spectrum range covers the characteristic spectrum of semiconductors, plasmas, organic matters and biomacromolecules, and the components of substances can be judged through the characteristic absorption of waveforms, so that the perception purpose is realized. Secondly, the terahertz wave band is not occupied at present, and the characteristic of high transmission capacity thereof makes the terahertz wave band receive a great deal of attention in the field of communication.
Spin sources are a broadband terahertz emission source and are of interest due to their abundant tunable means and low cost. The main structure is a heterojunction of a ferromagnetic layer/a non-ferromagnetic layer, and the emission principle is mainly that laser excitation carriers in the ferromagnetic layer are utilized to generate self-rotational flow, and the self-rotational flow generates ultrafast charge flow in the non-magnetic layer due to the reverse spin Hall effect, so that terahertz emission is realized. The device can realize the regulation and control of terahertz amplitude, phase and polarization state through the regulation and control of laser and magnetic field, and is a terahertz source with extremely strong regulation and control. Furthermore, after the current sources are applied to the two ends, the current at the two ends changes the magnetic moment of the spin source device due to the spin transfer torque effect, so that the terahertz waveform can be regulated and controlled more conveniently and rapidly.
According to the terahertz sense-on-all integrated system based on the spin source, which is disclosed by the embodiment of the invention, the communication and sensing modes can be switched freely, and different scheduling strategies are decided by a scheduler according to different application scenes. The sensing module dispatches the spin source array to transmit terahertz wave pulses to all directions, analyzes echo information and stores the user position and the channel state. The communication module integrates information required to be transmitted by a far-end user, converts the information required to be transmitted by the far-end user and the information modulation mode determined by the perception result according to different modulation strategies into digital signals, and controls the spin source array to transmit, for example, different phase, amplitude and polarization state distinguishing information is adopted to carry out digital coding. During transmitting, the sensing module or the communication module inputs a digital signal sequence to each unit of the spin source array according to the transmitting requirement, the digital signal is converted into an analog signal of the THz frequency band through the spin source, and then the analog signal is enhanced and transmitted through the terahertz transceiver, and the transceiver is mainly used for amplifying the terahertz signal and can be designed by utilizing the photoconductive antenna. Because the spin source can generate terahertz waves with various polarization states and different phases, the system can transmit the terahertz waves with multiple polarization states, phases, amplitudes and beam angles by combining an antenna array structure. When receiving, each unit receives terahertz wave, demodulates the terahertz wave into multi-unit digital signals through a terahertz transceiver and a spin source array device, and analyzes each user information through a communication and sensing module. Therefore, the system can realize terahertz wave transmission and reception of any beam shape and amplitude, phase and polarization states thereof.
FIG. 2 is a schematic diagram of a spin source array transmission according to an embodiment of the present invention, which may be encoded and transmitted using different phases, polarizations, amplitudes, and spatial angles.
The system adopts different strategies according to different application scenes:
aiming at ultra-short distance rapid transmission, the invention uses the characteristic of wave beam shaping of an antenna array, takes wave beam direction as a coding variable, codes through the angle of the wave beam direction receiving array, and realizes ultra-high speed communication. When the receiving end is far away, the sensing module changes through the spectrum characteristic peak and makes a communication termination conclusion by combining signaling information received by the communication module, so that short-distance ultrafast transmission and sensing are realized. Under the application environment, the sensing module mainly analyzes the echo of the signal transmitted by the communication module, and the system has low power consumption and high transmission rate.
Aiming at the intelligent furniture field, the spin source and sense integrated system provided by the invention utilizes the phase amplitude and the frequency shift of the reflected wave to perform human body gesture recognition, scans the article carried by the user and combines time information to analyze the user behavior, and preliminarily judges the possible user behavior according to a preset mode and communicates with furniture, and transmits the user position, the travelling state and the working mode. The system is not affected by illumination state, photon energy is low, occupied area is small, and user disturbance degree is low. At this time, the sensing communication modules occupy one channel respectively, two channels are distinguished by space azimuth, polarization and phase according to environmental conditions, and the rest variables bear transmitting information, and sensing and communication are completed at the same time.
Aiming at the safety detection field, the system can utilize a perception imaging technology to analyze articles carried by passers-by, realize noninductive detection, and utilize a communication module to alarm and evacuate other passengers when a dangerous situation is found. At this time, the sensing module is dominant, and the communication module is awakened by the dispatcher when necessary, so that consumption is reduced.
Aiming at the medical detection field, the system can analyze the properties and components of objects in the light path through terahertz spectrum information, and the communication module can upload the characteristic spectrum to the cloud for comparison and analysis, and download the result to the local so as to realize rapid and effective detection of the components of the substances. In addition, partial tissues can be analyzed by utilizing the imaging function of the sensing module, such as caries imaging and caries depth judgment. At this time, the sensing module and the communication module each use one channel.
Aiming at the dangerous case rescue field, the system is not influenced by smoke, sand and dust, can realize search and rescue work and on-site gas composition analysis under severe environment, and reports the position of survivors. In this case, the awareness module occupies mainly the link and the communication module is awakened by the scheduler in case of an emergency.
In the terahertz sense-through integrated system based on the spin source, the spin source array plays roles of transmitting terahertz and modulating terahertz at the same time, and information modulation is completed without the assistance of other devices, and a digital-to-analog converter is not needed. When modulating, the high and low levels input to the spin source film are used for modulating, the digital level is directly connected with the spin source array module, and the digital electric signal is controlled by the communication sensing module. The beams emitted by the units enter space interference after being amplified by the transceiver module, and the beams are formed to point to different beams due to the beam converging action of the array, so that the beam points also contain information during short-distance transmission, and contain different digital information when the beam points to different positions of the receiving array. The dispatcher regulates the laser digital signals and the circuit digital signals according to different actual scenes to realize the regulation and control of polarization states, phases, amplitudes and the like, and decides a frame structure according to the actual scenes. And realizing customized adjustment of corresponding signals of corresponding scenes.
The invention has two main advantages, namely the improvement of the physical layer of the existing terahertz communication system, and the functions of terahertz modulation and emission integration and digital-to-analog conversion are realized by introducing a novel device such as a spin source. Secondly, the modulation of the spin terahertz source on the phase, amplitude and polarization is utilized, and proper transmitting signals are selected according to the scene faced by the sense-of-general integrated system, so that the terahertz communication with customized environment is achieved, and the method is concretely as follows:
the spin source is utilized to modulate the digital signal into the analog signal, the digital baseband and intermediate frequency modulation in the traditional modulation are omitted, the terahertz frequency is achieved in one step, the energy consumption is low, the process is simple and quick, the digital signal distortion is small, the structure is simple, and the integration is easy.
The amplitude, the phase and the polarization state of the terahertz waveform are freely regulated and controlled by the spin terahertz source, so that the code rate is improved, and ultra-fast communication is realized. The spin transfer torque effect of the spin source is utilized to realize the nanosecond level turnover of the internal magnetic field, thereby achieving the high-speed information transmission.
The magnetic moment of the spin source is reversed without current maintenance, and the static power consumption is low
The spin sources are integrated in an array form, a high-performance terahertz modulator controlled by encoding is constructed, and the random modulation of the beam direction of the emitted signal is realized.
Different modulation modes are adopted aiming at different transmission modes, information transmission or channel division is carried out by utilizing different variables of waves according to requirements, meanwhile, a sensing communication function is realized, and efficient and reliable environment customization information transmission is realized.
The system does not need illumination, is not influenced by smoke and sand, and has low environmental requirements and strong adaptability. The on-board communication module can be compared with the remote characteristic spectrum, and has low storage capacity and low energy consumption.
For short-range communication, beam pointing is adopted as a coding mode, so that the code rate is greatly improved, and the index level is improved based on the array size.
The system can be directly connected into optical fibers, is regulated and controlled by optical signals, can be connected into an electric module to be electrically controlled, and can be embedded into various known systems.
By adopting the embodiment of the invention, the method has the following beneficial effects:
1. the system improves the problems that the traditional modulator is complex in structure, difficult to integrate, high in power consumption and easy to distort in the process of modulating digital signals. The characteristics of amplitude, phase and chirality of terahertz generated by a magnetic field and laser regulation and control spin source can be utilized, digital signals can be converted into analog terahertz waveforms through digital regulation and control (such as a turnover magnetic field) of the magnetic field and the light intensity, and digital-analog integrated regulation and control can be realized. The system has the advantages of no ADC sampling rate and multiple frequency conversion filtering problems, simple structure, easy integration, low energy consumption and difficult distortion of digital information. And can be used in combination with optical fibers, the static power consumption is low, and the device advantage is great.
2. Ultra-fast information modulation rate. Because the internal magnetic field of the spin terahertz source can be freely regulated and controlled by current based on spin-orbit-torqued (SOT), and the time for controlling current turnover by the effect is at nanosecond level, the spin array based on the device can realize single-link high-speed information transmission from several GHz to tens of GHz.
3. And the coding modes are abundant, and the channel rate is improved. The spin source can realize random regulation and control on the amplitude, the phase and the polarization state of terahertz under the controllable laser and the magnetic field, and the array can randomly regulate the direction of the emitted wave beam, so that a system adopting the spin source array can utilize more properties of a carrier wave for transmission, such as the pointed direction of the wave beam and the terahertz polarization state of a final waveform.
4. The universal sensing integrated system based on the spin source array is provided, and various requirements are met. According to different application scenes, terahertz waves with different characteristics are emitted to meet emission requirements, and regulation and control are achieved. And different transmission waveforms are adopted for different scenes to realize the requirements of sensing or communication.
Method embodiment
According to an embodiment of the present invention, there is provided a terahertz sense integration method based on a spin source, and fig. 3 is a flowchart of the terahertz sense integration method based on the spin source of the embodiment of the present invention, as shown in fig. 3, where the terahertz sense integration method based on the spin source of the embodiment of the present invention includes:
step S301, different scheduling strategies are adopted by the scheduler according to the application scenario, and step S301 specifically includes:
the scheduler realizes the regulation and control of multiple polarization states, multiple phases, multiple amplitudes and the like by regulating the limit of the laser digital signal and the circuit digital signal according to different application scenes, and determines the frame structure according to the application scenes.
Step S302, a sensing module dispatches a spin source array to emit terahertz wave pulses through different dispatching strategies, and analyzes echo results; the spin source array modulates terahertz waves through high and low levels or laser pulses.
Step S303, the communication module integrates information required to be transmitted by a far-end user, and converts the information required to be transmitted by the far-end user and the information modulation mode determined by the perception result according to different modulation strategies into a digital signal sequence, and the modulated terahertz waves are transmitted through the spin source array, wherein the step S303 specifically comprises:
and receiving the digital signal sequence sent by the communication module, generating terahertz waves with various polarization states and different phases through a specific number of spin sources in the spin source array according to the digital signal sequence, and forming the terahertz waves with multiple polarization states, phases, amplitudes and beam angles according to the antenna array structure of the spin source array.
Step S304, a terahertz transceiver receives terahertz pulses sent by a spin source array and carries out enhanced emission on terahertz;
step S305, when receiving, the terahertz transceiver receives the terahertz signal transmitted by the far-end user, the terahertz signal transmitted by the far-end user is transmitted into the spin source array in the form of an analog signal, and the spin source array converts the analog signal into a digital signal;
in step S306, the communication module receives the digital signal sequence, analyzes the digital signal sequence, restores the initial signal, and transmits the initial signal to the cloud.
The terahertz sense-of-general integration method based on the spin source provided by the embodiment of the invention can be freely switched between communication and sensing modes, and different scheduling strategies are decided by a scheduler according to different application scenes. The sensing module schedules the spin source array to emit terahertz wave pulses to all directions, analyzes echo information and stores user states. The communication module integrates the remote user information to be transmitted, and transmits the remote user information to be transmitted and the perception result by adopting an information modulation mode determined by a dispatcher, for example, different phase, amplitude and polarization state distinguishing information are adopted for digital coding. During transmitting, the sensing module or the communication module inputs a digital signal sequence to each unit of the spin source array according to the transmitting requirement, the digital signal is converted into an analog signal of the THz frequency band through the spin source, and then the analog signal is enhanced and transmitted through the terahertz transceiver, and the transceiver is mainly used for amplifying the terahertz signal and can be designed by utilizing the photoconductive antenna. Because the spin source can generate terahertz waves with various polarization states and different phases, the system can transmit the terahertz waves with multiple polarization states, phases, amplitudes and beam angles by combining an antenna array structure. When receiving, each unit receives terahertz wave, demodulates the terahertz wave into multi-unit digital signals through a terahertz transceiver and a spin source array device, and analyzes each user information through a communication and sensing module. Therefore, the system can realize terahertz wave transmission and reception of any beam shape and amplitude, phase and polarization states thereof.
By adopting the embodiment of the invention, the method has the following beneficial effects:
1. the method improves the problems that the traditional modulator is complex in structure, difficult to integrate, high in power consumption and easy to distort the digital signal in the modulating process. The characteristics of amplitude, phase and chirality of terahertz generated by a magnetic field and laser regulation and control spin source can be utilized, digital signals can be converted into analog terahertz waveforms through digital regulation and control (such as a turnover magnetic field) of the magnetic field and the light intensity, and digital-analog integrated regulation and control can be realized. The system has the advantages of no ADC sampling rate and multiple frequency conversion filtering problems, simple structure, easy integration, low energy consumption and difficult distortion of digital information. And can be used in combination with optical fibers, the static power consumption is low, and the device advantage is great.
2. Ultra-fast information modulation rate. Because the internal magnetic field of the spin terahertz source can be freely regulated and controlled by current based on spin-orbit-torqued (SOT), and the time for controlling current turnover by the effect is at nanosecond level, the spin array based on the device can realize single-link high-speed information transmission from several GHz to tens of GHz.
3. And the coding modes are abundant, and the channel rate is improved. The spin source can realize random regulation and control on the amplitude, the phase and the polarization state of terahertz under the controllable laser and the magnetic field, and the array can randomly regulate the direction of the emitted wave beam, so that a system adopting the spin source array can utilize more properties of a carrier wave for transmission, such as the pointed direction of the wave beam and the terahertz polarization state of a final waveform.
4. The universal sensing integrated system based on the spin source array is provided, and various requirements are met. According to different application scenes, terahertz waves with different characteristics are emitted to meet emission requirements, and regulation and control are achieved. And different transmission waveforms are adopted for different scenes to realize the requirements of sensing or communication.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. Terahertz is led to and is felt integration system based on spin source, characterized by comprising: the system comprises a spin source array, a terahertz transceiver, a communication module, a sensing module and a scheduler;
the scheduler is in communication connection with the sensing module and the communication module and is used for adopting different scheduling strategies according to different application scenes and configuring the different scheduling strategies to the communication module and the sensing module;
the sensing module is in communication connection with the scheduler and the spin source array, and is used for scheduling the spin source array to emit terahertz wave pulses to all directions according to different scheduling strategies when in emission, analyzing terahertz wave echo signals received by the terahertz transceiver when in reception, generating a sensing result, and storing user properties and states in the sensing result;
the communication module is in communication connection with the scheduler and the spin source array, and is used for integrating information required to be transmitted by a far-end user during transmitting, controlling the spin source array to transmit the information required to be transmitted by the far-end user and the sensing result according to the information modulation modes determined by different scheduling strategies, and analyzing terahertz wave signals received by the terahertz transceiver and generating a receiving result during receiving;
the spin source array is in communication connection with the terahertz transceiver, the communication module and the sensing module, and is used for generating terahertz waves during transmission and modulating the terahertz waves during transmission; when receiving, demodulating according to the analog signal transmitted by the terahertz transceiver;
the terahertz transceiver is in communication connection with the spin source array and is used for amplifying terahertz waves emitted by the spin source array during emission; and the terahertz wave signal is used for receiving terahertz wave signals radiated to the system during receiving.
2. The system of claim 1, wherein the spin source array comprises: a specific number of spin sources, which are terahertz wave sources within the system.
3. The system of claim 2, wherein the spin source array is specifically configured to:
and receiving a digital signal sequence sent by the sensing module or the communication module, generating terahertz waves with various polarization states and different phases through a specific number of spin sources in the spin source array according to the digital signal sequence, and forming the terahertz waves with multiple polarization states, phases, amplitudes and beam angles according to an antenna array structure of the spin source array.
4. The system of claim 1, wherein the spin source array is further configured to:
and receiving an analog signal transmitted by the terahertz transceiver and converting the analog signal into a digital signal.
5. The system according to claim 1, wherein the scheduler is specifically configured to: and controlling the sending time of the sensing module or the communication module, and determining the information coding mode according to the digital control signal sequences corresponding to terahertz waves with different phases, amplitudes and polarization states and the corresponding relation of the required transmission information.
6. The system of claim 1, wherein the spin source array is further configured to: the terahertz wave is modulated by a high-low level or laser pulse.
7. The terahertz sense-through integration method based on the spin source is characterized by comprising the following steps of:
s701, adopting different scheduling strategies according to application scenes through a scheduler;
s702, a sensing module dispatches a spin source array to emit terahertz wave pulses through different dispatching strategies, and after step S705, digital signals generated by echoes are analyzed and sensing results are generated;
s703, integrating information required to be transmitted by a far-end user by a communication module, converting the information required to be transmitted by the far-end user and a sensing result into a digital signal sequence according to an information modulation mode determined by different modulation strategies, and transmitting modulated terahertz waves through a spin source array;
s704, a terahertz transceiver receives terahertz pulses sent by the spin source array and carries out enhanced emission on the terahertz pulses;
s705, receiving terahertz signals transmitted by a far-end user by a terahertz transceiver, wherein the terahertz signals transmitted by the far-end user are transmitted into a spin source array in the form of analog signals, and the spin source array converts the analog signals into digital signals;
s706, the communication module receives the digital signal sequence, analyzes the digital signal sequence, restores the initial signal, and transmits the initial signal to the cloud.
8. The method of claim 7, wherein the scheduling the spin source array to emit terahertz wave pulses by different scheduling strategies specifically comprises:
the spin source array modulates terahertz waves through high and low levels or laser pulses.
9. The method according to claim 7, wherein the step of adopting different scheduling strategies by the scheduler according to the application scenario comprises:
the scheduler realizes regulation and control of multiple polarization states, multiple phases, multiple amplitudes and the like by regulating the limit of the laser digital signal and the circuit digital signal according to different application scenes, and determines a frame structure according to the application scenes.
10. The method of claim 7, wherein the information modulation method determined according to different modulation strategies is converted into a digital signal sequence, and the transmitting of the modulated terahertz wave through the spin source array specifically comprises:
and receiving a digital signal sequence sent by the communication module, generating terahertz waves with various polarization states and different phases through a specific number of spin sources in a spin source array according to the digital signal sequence, and forming the terahertz waves with multiple polarization states, phases, amplitudes and beam angles according to an antenna array structure of the spin source array.
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| CN110176533A (en) * | 2019-05-10 | 2019-08-27 | 电子科技大学 | A kind of spin electric device of photoresponse and preparation method thereof |
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