Satellite information processing system and method based on photoelectric hybrid calculation

Abstract

The invention relates to a satellite information processing system and method based on photoelectric hybrid calculation. The satellite information processing system comprises a photoelectric hybrid calculation module, a photoelectric dual-channel transmission module and an information acquisition module, the photoelectric hybrid calculation module comprises an optical processing unit and an electric processing unit, the optical processing unit is used for realizing matrix operation of big data, and the electric processing unit is used for realizing other operations except the matrix operation of the big data; the photoelectric dual-channel transmission module adopts an electrical / optical dual-bus structure of an electrical bus and an optical transmission network, the electrical bus is used for transmitting and sharing low-speed and high-reliability data, and the optical transmission network is used for transmitting and sharing large-data-volume load data. Based on the technical advantages of high bandwidth, parallelism, low time delay, low loss, interference resistance, precise measurement and the like of the photon technology, and in combination with the technical advantages of control and the like of the electronic technology, high-speed data exchange and real-time data processing capability can be realized, so that the satellite-as-a-service efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of optical computing technology, and in particular to a satellite information processing system and method based on optoelectronic hybrid computing. Background Art

[0002] With the development of satellite technology, high-resolution remote sensing, high-speed communications, and high-bandwidth electronic reconnaissance have become mainstream satellite products. These high-performance satellites have brought about a surge in the amount of on-orbit data. In addition, users have increasingly high requirements for the real-time performance of data products, which requires satellite information processing systems to have high-speed data exchange and high-efficiency data processing capabilities. This has brought great challenges to traditional satellite information processing systems based on electronic technology. Therefore, it is urgent to explore and research high-efficiency processing and high-speed transmission satellite information processing systems.

[0003] Compared with electronic technology, photonic technology has technical advantages such as high bandwidth, parallelism, low latency, low loss, anti-interference, and precise measurement. In recent years, researchers have conducted a large number of studies on information processing and information transmission methods and systems based on photonic technology, verifying the technical advantages of photonic technology. Therefore, satellite information processing systems based on photonic technology are expected to become key technologies to support the realization of high-performance satellite performance.

[0004] Optical computing is the use of photons as physical carriers to express mathematical processes, which can be divided into digital optical computing and analog optical computing. The research on digital optical computing can be traced back to the 1950s. Its main idea is to design photonic transistors to replace electronic transistors based on Boolean logic to realize optical logic gate operations. Analog optical computing is the operation and processing of optical analog signals in linear optical systems, mainly covering two operations: analog signal operation and optical matrix calculation. Analog signal operation mainly uses spectrum shaping or other methods to process the frequency domain or time domain of optical analog signals to achieve specific signal transformations, such as optical differentiators, optical integrators, optical differential equation solving, Hilbert transform, Fourier transform, and optical arbitrary waveform generation; optical matrix calculation is to realize discrete parallel matrix multiplication calculations in the optical domain, such as linear equation solving, least squares problems, algebraic eigenvalue problems, and spatial Fourier transforms; in the linear part of convolutional neural networks, it is widely used in image recognition, speech recognition, intelligent driving and other fields. Analog optical computing can be realized through spatial domain simulation and integrated systems respectively.

[0005] For decades, researchers have been committed to finding effective ways to control light and use it for information transmission and processing. Early optical computing was mainly based on systems built on spatial optical computing methods. In 1964, Vander Lugt realized the first spatial optical filter with the support of the US Army Laboratory and applied it to point target extraction under complex backgrounds. After that, researchers explored a series of optical logic devices and model devices and proposed a large number of optical computing technologies, including optical pattern recognition, logic optical computing, optical neural networks, optical interconnection, optical holographic storage, etc.

[0006] In addition to optical computing, optical interconnection technology has been transformed from laboratory to engineering application. Compared with microwaves, lasers have advantages such as large communication capacity, good confidentiality, small size and light weight. They have become an effective means to solve the bandwidth bottleneck of satellite microwave communications and alleviate the shortage of satellite spectrum resources, and realize high-speed satellite communications. In recent years, the United States, Europe, Japan and other countries have carried out various satellite communication network plans and constellation implementations, which has driven the rapid development of satellite high-speed data laser communication technology.

[0012] Information processing methods based on photonic technology, such as optical computing and optical interconnection, have demonstrated the capabilities of electronic systems and have also realized some engineering applications. Therefore, in response to the current and future needs of satellite on-orbit information processing, it is urgent to develop satellite information processing systems based on photonic technology and build light-dominated satellite systems. Summary of the invention

[0013] In order to solve the technical problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a satellite information processing system and method based on optoelectronic hybrid computing. Based on the technical advantages of photonic technology such as high bandwidth, parallelism, low latency, low loss, anti-interference, and precise measurement, and combined with the technical advantages of electronic technology such as control, a satellite information processing system with light-dominated optoelectronic hybrid computing and optoelectronic dual-channel transmission is constructed, which can realize high-speed data exchange and real-time data processing capabilities, thereby improving the efficiency of "Satellite as a Service".

[0014] To achieve the above-mentioned purpose of the invention, the present invention provides a satellite information processing system based on optoelectronic hybrid computing, including an optoelectronic hybrid computing module, an optoelectronic dual-channel transmission module and an information acquisition module;

[0015] The optoelectronic hybrid computing module includes an optical processing unit and an electrical processing unit, wherein the optical processing unit is used to implement matrix operations of big data, and the electrical processing unit is used to implement other operations except matrix operations of big data;

[0016] The optoelectronic dual-channel transmission module adopts an electrical / optical dual bus structure of an electrical bus and an optical transmission network. The electrical bus is used for the transmission and sharing of low-speed, high-reliability data, and the optical transmission network is used for the transmission and sharing of large-volume payload data.

[0017] According to a technical solution of the present invention, the optoelectronic hybrid computing module further includes:

[0018] A storage unit, used to store satellite information data and data processed by the optoelectronic hybrid computing module;

[0019] A decision unit is used to distribute the satellite information data to the optical processing unit or the electrical processing unit based on the data type and data source of the satellite information data.

[0020] According to a technical solution of the present invention, after the information acquisition module acquires the satellite information, the information is transmitted to the optoelectronic hybrid computing module through the optoelectronic dual-channel transmission module.

[0021] According to a technical solution of the present invention, the information acquisition module includes a load information acquisition module and a platform information acquisition module;

[0022] The load information acquisition module is at least used to acquire relevant information of optical imaging, laser radar, and microwave optical detection;

[0023] The platform information acquisition module is at least used to acquire relevant information of optical fiber sensing, optical PNT, and optical fiber gyroscope.

[0024] According to a technical solution of the present invention, the optical processing unit is implemented by photon integration, and the photon integration includes a light source, a modulator, a multiplexer, an addition and multiplication calculation unit and a detector.

[0025] According to a technical solution of the present invention, multi-input and multi-output data transmission and sharing are achieved between optical processing units and between optical processing units and electrical processing units through optical interconnection modules.

[0026] According to one aspect of the present invention, there is provided a processing method of a satellite information processing system based on optoelectronic hybrid computing as described in any one of the above technical solutions, comprising:

[0027] Step S1, obtaining satellite information data;

[0028] Step S2, transmitting the satellite information to the optoelectronic hybrid computing module through the electrical channel and the optical channel respectively according to the data type and / or data source of the satellite information;

[0029] Step S3, the optoelectronic hybrid processing module implements large-scale matrix operations through the optical processing unit and high-precision floating-point operations and data storage through the electrical processing unit according to the data type, processing mode and processing accuracy requirements;

[0030] Step S4: After the data from different channels reaches the optoelectronic hybrid processing module, the feature-level real-time fusion of multi-source information is realized to provide support for orbit decision-making on the satellite platform.

[0031] According to a technical solution of the present invention, the satellite information data includes payload information data and platform information data.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention proposes a satellite information processing system and method based on optoelectronic hybrid computing, which adopts an optoelectronic hybrid data processing architecture. Optical processing mainly realizes matrix operations of big data, and electrical processing realizes other operations and storage functions. It can not only give full play to the advantages of high bandwidth and high parallelism of optical processing, but also realize high-precision data processing and data storage through electrical fine control and easy manipulation, thereby meeting the requirements of efficient on-orbit processing of big data.

[0034] The present invention is based on the technical advantages of photonic technology such as high bandwidth, parallelism, low latency, low loss, anti-interference, and precise measurement, and combines the technical advantages of electronic technology such as control to construct a satellite information processing system with light-dominated optoelectronic hybrid computing and optoelectronic dual-channel transmission, which can achieve high-speed data exchange and real-time data processing capabilities, thereby improving the performance of "Satellite as a Service". BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A schematic diagram schematically shows the architecture of a satellite information processing system based on optoelectronic hybrid computing in an implementation case of the present invention;

[0037] Figure 2 A schematic diagram of an optoelectronic dual-channel interconnection architecture in an implementation example of the present invention is shown;

[0038] Figure 3 A schematic diagram of an optoelectronic hybrid processing architecture according to an embodiment of the present invention is shown;

[0039] Figure 4 The flowchart schematically shows a satellite information processing method based on optoelectronic hybrid computing according to an implementation case of the present invention. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figures 1 to 3 As shown, a satellite information processing system based on optoelectronic hybrid computing of the present invention includes an optoelectronic hybrid computing module, an optoelectronic dual-channel transmission module and an information acquisition module.

[0042] The optoelectronic hybrid computing module includes an optical processing unit and an electrical processing unit. The optical processing unit is used to implement matrix operations of big data, and the electrical processing unit is used to implement other operations except matrix operations of big data.

[0043] The optical processing unit is realized by photonic integration, which includes a light source, a modulator, a multiplexer, an addition and multiplication calculation unit and a detector, realizing large-scale optical matrix multiplication operations and being able to process massive amounts of image data or spectrum data in a short time.

[0044] In the optical processing unit, the light source (such as a laser or a light-emitting diode) provides a stable, high-quality optical signal as the basis for optical computing. The modulator (such as an electro-optical modulator) modulates the optical signal according to the input data signal to realize data loading and processing operations. The multiplexer multiplexes multiple optical signals to improve the efficiency of optical transmission and bandwidth utilization. The addition and multiplication computing unit is based on the principles of optical interference and diffraction, and uses optical elements such as optical waveguides and optical couplers to construct a matrix multiplication operation structure to realize fast matrix operations of big data. The detector (such as a photodiode) converts the processed optical signal into an electrical signal for data interaction or further transmission with the electrical processing unit. By integrating these optical components on a chip or module, and using advanced micro-nano processing technology and photonic integration technology, the optical processing unit can be miniaturized, high-performance, and low-power.

[0045] The use of photonic integration technology to implement optical processing units has greatly improved the integration and performance stability of optical processing units, reduced the size, weight and power consumption of the system, and at the same time improved the accuracy and speed of optical signal processing, and enhanced the processing capabilities and efficiency of optical processing units for large data matrix operations. This has enabled satellite information processing systems to operate more efficiently on satellite platforms with limited space and tight energy supply, providing the possibility for more complex and powerful optical computing functions, and promoting the development of satellite information processing technology towards miniaturization and high efficiency.

[0046] The electrical processing unit is mainly composed of a high-performance microprocessor, which undertakes the important tasks of high-precision floating-point operations and communication with other satellite subsystems. It has strong computing power and fast data processing speed, and can further analyze and process the data transmitted from the optical processing unit.

[0047] The optoelectronic dual-channel transmission module adopts an electrical / optical dual bus structure of an electrical bus and an optical transmission network. The electrical bus is used for the transmission and sharing of low-speed, high-reliability data, and the optical transmission network is used for the transmission and sharing of large-volume payload data.

[0048] According to the requirements of data volume, transmission frequency, delay and other requirements of various types of satellite information, an electrical / optical dual bus structure is adopted, in which the electrical bus network is mainly used for the transmission and sharing of low-speed, high-reliability data. It is mainly used to transmit telemetry and remote control information, injection data, equipment / component measurement and output data, system control information, etc. between onboard equipment, including low-speed data such as measurement and control, digital transmission, and inertial group. It is the backbone network for the transmission and exchange of satellite service information, system integrated control information, and remote control and telemetry information. The optical transmission network is mainly used for the transmission and sharing of large-scale payload data, including optical remote sensing payloads, star-sensitive payloads, situational awareness payloads, electromagnetic spectrum payloads, etc., to realize information transmission and sharing through optical networks. For low-speed, high-reliability data such as measurement and control, digital transmission, and inertial group, electrical channels such as 1553B are used for transmission and sharing. All data reaches the optoelectronic hybrid processing unit through the optoelectronic fusion bus bridge to realize real-time sharing and fusion processing of multi-source data. Figure 2 In the invention, optical A channel and optical B channel, electrical A channel and electrical B channel are configured, one of the channels is a main channel and the other is a backup channel. For example, optical A channel is a main channel and optical B channel is a backup channel.

[0049] The present invention divides the optoelectronic hybrid computing module into an optical processing unit and an electrical processing unit, and utilizes the characteristics of the optical processing unit to realize matrix operations of big data, giving full play to its advantages of high bandwidth, parallelism, and low latency, and quickly processing complex computing tasks of large-scale data such as optical remote sensing images. At the same time, the electrical processing unit is responsible for other operations other than matrix operations, such as high-precision floating-point operations, logical control, etc., and combined with its easy-to-control and high-precision characteristics, it ensures the comprehensiveness and accuracy of the system's processing of various types of data. The optoelectronic dual-channel transmission module using an electrical / optical dual-bus structure allocates low-speed, high-reliability data to the electrical bus for transmission and sharing according to the requirements of data volume, transmission frequency, and delay, thereby ensuring the stable and reliable transmission of key control data; large-volume payload data is transmitted through an optical transmission network, making full use of its high bandwidth advantages to achieve high-speed data exchange, thereby optimizing the entire satellite information processing process.

[0050] By building a basic satellite information processing system based on optoelectronic hybrid computing, targeted processing and efficient transmission of different types of satellite data are achieved, which can meet the comprehensive needs of satellites for data processing speed, reliability and processing capabilities in orbit, improve the overall performance and effectiveness of the satellite information processing system, and effectively solve the bottleneck problem of traditional satellite information processing systems when facing large amounts of data and complex calculations, providing strong support for various satellite applications.

[0051] In some embodiments of the present invention, the optoelectronic hybrid computing module further includes:

[0052] A storage unit is used to store satellite information data and data processed by the optoelectronic hybrid computing module; the storage unit uses a high-speed, large-capacity storage chip, which can temporarily or long-term store satellite information data, facilitate subsequent processing and analysis of the data, and data interaction and sharing between different processing units;

[0053] A decision unit is used to distribute the satellite information data to the optical processing unit or the electrical processing unit based on the data type and data source of the satellite information data.

[0054] The decision-making unit uses built-in intelligent algorithms and data recognition modules to analyze and determine the data type, data source and other characteristics of satellite information data, and accurately distributes the data to the optical processing unit or electrical processing unit based on preset rules and strategies, ensuring that each data can be efficiently processed on the most suitable processing unit to achieve optimal configuration of system resources.

[0055] By configuring storage units and decision units, the functions of the optoelectronic hybrid computing module are improved, the system's storage and management capabilities for satellite information data are enhanced, and the ability to intelligently allocate processing tasks according to data characteristics is enhanced, thereby improving the system's processing efficiency and the pertinence of data processing, enabling the system to better adapt to the diversified processing needs of different types of satellite data, reduce the blindness of data processing and waste of resources, and improve the overall intelligence level and operational efficiency of the system.

[0056] In some embodiments of the present invention, after the information acquisition module acquires the satellite information, the satellite information is transmitted to the optoelectronic hybrid computing module through the optoelectronic dual-channel transmission module. After acquiring the satellite information, the information acquisition module uses the electrical bus or optical transmission network in the optoelectronic dual-channel transmission module to transmit data according to the type and characteristics of the data. For low-speed, critical control information, it is stably transmitted to the electrical processing unit of the optoelectronic hybrid computing module through the electrical bus; for large amounts of payload information, it is transmitted to the optical processing unit at high speed through the optical transmission network. During the transmission process, appropriate signal modulation, encoding and decoding technologies, as well as reliable transmission protocols, are used to ensure the integrity and accuracy of the data, and to achieve efficient connection from information acquisition to processing.

[0057] In some embodiments of the present invention, the information acquisition module includes a load information acquisition module and a platform information acquisition module;

[0058] The load information acquisition module is at least used to acquire relevant information of optical imaging, laser radar, and microwave optical detection;

[0059] The platform information acquisition module is at least used to acquire relevant information of optical fiber sensing, optical PNT, and optical fiber gyroscope.

[0060] The payload information acquisition module is equipped with a variety of advanced sensors, such as high-resolution optical imaging equipment, high-precision laser radar, and high-sensitivity microwave optical detectors, which can obtain detailed information on the earth's surface, atmospheric environment, space targets, etc. These sensors use optical, microwave and other technical principles to convert physical signals into electrical or optical signals, and transmit data to the optoelectronic dual-channel transmission module through corresponding signal conditioning and preprocessing circuits. The platform information acquisition module uses fiber optic sensing technology to monitor the structural health, temperature, pressure and other parameters of the satellite platform in real time, uses the optical PNT (positioning, navigation, timing) system to obtain the precise position and attitude information of the satellite, and uses the fiber optic gyroscope to measure the satellite's angular velocity and other motion parameters. Through these dedicated optical measurement equipment, the key information of the platform operation is accurately collected and transmitted to the subsequent processing link, providing guarantee for the stable operation of the satellite and the execution of the mission.

[0061] In some embodiments of the present invention, multi-input and multi-output data transmission and sharing are achieved between optical processing units and between optical processing units and electrical processing units through optical interconnect modules.

[0062] Between optical processing units, the optical interconnection module is used to achieve parallel transmission and exchange of multiple optical signals. By utilizing the high-speed transmission characteristics of light and technologies such as wavelength division multiplexing, the input and output optical signals of different optical processing units are efficiently connected and data is exchanged, thereby improving the parallelism and bandwidth of data transmission. Between the optical processing unit and the electrical processing unit, the optical interconnection module converts the optical signal output by the optical processing unit into an electrical signal and transmits it to the electrical processing unit. At the same time, it can also transmit the control signal or data generated by the electrical processing unit to the optical processing unit in the form of an optical signal, thereby achieving fast, two-way data interaction and collaborative work between the two processing units, and ensuring smooth data flow and efficient operation of the entire satellite information processing system.

[0063] like Figure 4 As shown, according to one aspect of the present invention, a processing method of a satellite information processing system based on optoelectronic hybrid computing as described in any one of the above technical solutions is provided, comprising:

[0064] Step S1, obtaining satellite information data;

[0065] Step S2, transmitting the satellite information to the optoelectronic hybrid computing module through the electrical channel and the optical channel respectively according to the data type and / or data source of the satellite information;

[0066] Step S3, the optoelectronic hybrid processing module implements large-scale matrix operations through the optical processing unit and high-precision floating-point operations and data storage through the electrical processing unit according to the data type, processing mode and processing accuracy requirements;

[0067] Step S4: After the data from different channels reaches the optoelectronic hybrid processing module, the feature-level real-time fusion of multi-source information is realized to provide support for orbit decision-making on the satellite platform.

[0068] In some embodiments of the present invention, the satellite information data includes payload information data and platform information data.

[0069] The present invention discloses a satellite information processing system and method based on optoelectronic hybrid computing, which adopts an optoelectronic hybrid data processing architecture. Optical processing mainly realizes matrix operations of big data, and electrical processing realizes other operations and storage functions. It can not only give full play to the advantages of high bandwidth and high parallelism of optical processing, but also realize high-precision data processing and data storage through electrical fine control and easy manipulation, thus meeting the requirements of efficient on-orbit processing of big data.

[0070] The present invention is based on the technical advantages of photonic technology such as high bandwidth, parallelism, low latency, low loss, anti-interference, and precise measurement, and combines the technical advantages of electronic technology such as control to construct a satellite information processing system with light-dominated optoelectronic hybrid computing and optoelectronic dual-channel transmission, which can achieve high-speed data exchange and real-time data processing capabilities, thereby improving the performance of "Satellite as a Service".

[0071] It should be noted that, in the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "include one..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0072] It should also be noted that the above is a preferred embodiment of the present invention. It should be noted that although the preferred embodiment of the present invention has been described, once the basic creative concept of the present invention is known, a number of improvements and modifications can be made by a person skilled in the art without departing from the principles of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. Therefore, the attached claims are intended to be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the embodiments of the present invention.

Claims

1. A satellite information processing system based on optoelectronic hybrid computing, characterized in that: It includes an optoelectronic hybrid computing module, an optoelectronic dual-channel transmission module and an information acquisition module; The optoelectronic hybrid computing module includes an optical processing unit and an electrical processing unit, wherein the optical processing unit is used to implement matrix operations of big data, and the electrical processing unit is used to implement other operations except matrix operations of big data; The optoelectronic dual-channel transmission module adopts an electrical / optical dual bus structure of an electrical bus and an optical transmission network. The electrical bus is used for the transmission and sharing of low-speed, high-reliability data, and the optical transmission network is used for the transmission and sharing of large-volume payload data.

2. The satellite information processing system based on optoelectronic hybrid computing according to claim 1 is characterized in that: The optoelectronic hybrid computing module also includes: A storage unit, used to store satellite information data and data processed by the optoelectronic hybrid computing module; A decision unit is used to distribute the satellite information data to the optical processing unit or the electrical processing unit based on the data type and data source of the satellite information data.

3. The satellite information processing system based on optoelectronic hybrid computing according to claim 1, characterized in that: After acquiring the satellite information, the information acquisition module transmits the satellite information to the optoelectronic hybrid computing module through the optoelectronic dual-channel transmission module.

4. The satellite information processing system based on optoelectronic hybrid computing according to claim 3 is characterized in that: The information acquisition module includes a load information acquisition module and a platform information acquisition module; The load information acquisition module is at least used to acquire relevant information of optical imaging, laser radar, and microwave optical detection; The platform information acquisition module is at least used to acquire relevant information of optical fiber sensing, optical PNT, and optical fiber gyroscope.

5. The satellite information processing system based on optoelectronic hybrid computing according to claim 3 is characterized in that: The optical processing unit is realized by photon integration, and the photon integration includes a light source, a modulator, a multiplexer, an addition and multiplication calculation unit and a detector.

6. The satellite information processing system based on optoelectronic hybrid computing according to claim 1, characterized in that: The optical processing units and the optical processing units, and the optical processing units and the electrical processing units are connected to each other to achieve multi-input and multi-output data transmission and sharing through optical interconnection modules.

7. A processing method for a satellite information processing system based on optoelectronic hybrid computing according to any one of claims 1 to 6, characterized in that: include: Step S1, obtaining satellite information data; Step S2, transmitting the satellite information to the optoelectronic hybrid computing module through the electrical channel and the optical channel respectively according to the data type and / or data source of the satellite information; Step S3, the optoelectronic hybrid processing module implements large-scale matrix operations through the optical processing unit and high-precision floating-point operations and data storage through the electrical processing unit according to the data type, processing mode and processing accuracy requirements; Step S4: After the data from different channels reaches the optoelectronic hybrid processing module, the feature-level real-time fusion of multi-source information is realized to provide support for orbit decision-making on the satellite platform.

8. The processing method according to claim 7, characterized in that: The satellite information data includes payload information data and platform information data.

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