CN111404605B - Active tracking type laser communication system with shared light source and terminal - Google Patents
Active tracking type laser communication system with shared light source and terminal Download PDFInfo
- Publication number
- CN111404605B CN111404605B CN202010312017.6A CN202010312017A CN111404605B CN 111404605 B CN111404605 B CN 111404605B CN 202010312017 A CN202010312017 A CN 202010312017A CN 111404605 B CN111404605 B CN 111404605B
- Authority
- CN
- China
- Prior art keywords
- communication
- laser
- communication terminal
- main body
- terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a common light source active tracking type laser communication system, a terminal and a control main body, wherein two communication parties share one laser, so that the power of the laser can be larger, and a communication link is longer, thereby greatly enlarging the range of underwater laser communication and increasing the practicability of the underwater laser communication; secondly, the communication terminal is not required to be provided with a laser, but is provided with a pyramid prism, so that the number of devices on the communication terminal is reduced, the energy consumption is reduced, the communication terminal can move more flexibly and rapidly, and the voyage is farther; when the communication control main body receives a light beam reflected by the communication terminal, the light spot returned by the communication terminal is monitored through the arranged quadrant detector to obtain the position information of the terminal, so that the position of the communication terminal is actively tracked, the objects which are communicated with each other can be ensured to be in an aligned state all the time, the continuity and stability of a communication link are ensured, and the key problem in underwater laser communication is solved.
Description
Technical Field
The invention relates to the technical field of underwater laser communication, in particular to an active tracking type laser communication system with a shared light source and a terminal.
Background
The ocean occupies 71 percent of the surface area of the earth, has rich oil gas resources, mineral substances and biological gene resources, and is a future granary for human beings. The exploration, development and utilization of the ocean can not be supported by the underwater communication technology. In the current underwater communication mode, the electromagnetic wave communication has too short communication distance, only a few meters to dozens of meters, very low communication speed, only the order of bps, and extremely large and complex communication equipment, because the water absorbs the electromagnetic wave too strongly, and only military can bear the cost. At present, acoustic waves are utilized in underwater acoustic communication which is used more frequently, the communication quality is poor, the environmental noise is high, the multipath effect is serious, the error rate is high, the communication delay is very serious, the communication speed is not high, and the communication speed is only in the order of kbps. The communication link of the underwater laser communication can reach hundreds of meters, the communication data transmission rate is hundreds of thousands of times of that of underwater acoustic communication, the communication quality is good, the confidentiality is strong, no time delay exists, and the underwater laser communication method is the mainstream of future underwater communication.
The key of underwater laser communication is the need to constantly maintain the alignment of the laser beam and the communication object to ensure the continuity and stability of the communication link. This condition is easily met when both communicating parties are stationary, but the alignment condition is difficult to achieve when either or both communicating parties are moving. Such as communication between a surface station and an underwater motion unit, or communication between underwater motion units, as is the case. In some existing processing technologies, lasers are installed on both communication parties, and the communication parties find each other through scanning and according to a certain optimization algorithm, and then lock each other to establish a communication link. The technology involves complicated equipment, is time-consuming, and cannot guarantee the real-time performance and the continuity of communication.
Disclosure of Invention
The invention provides a common light source active tracking type laser communication system and a terminal, which mainly solve the technical problems that: how to guarantee the alignment of two parties of underwater laser communication.
In order to solve the technical problem, the invention provides an active tracking type laser communication system with a shared light source, which comprises a communication control main body and a communication terminal, wherein the communication control main body comprises a main body control system, a first modulator, a laser transmitter, a first beam splitting device, a first demodulator and a quadrant detector; the main body control system is connected with the first modulator, and the first modulator is connected with the laser transmitter; the main body control system is used for controlling the first modulator to modulate control information into an emission light beam and emit the emission light beam through the laser emitter;
the communication terminal comprises a second beam splitting device, a second demodulator, a terminal control system, a behavior control module, an information acquisition module, a pyramid prism and a second modulator; the second beam splitting device receives the emission beam, divides the emission beam into two parts of beams, and sends one part of beams to the second demodulator for demodulation to obtain the control information; the terminal control system controls the action of the behavior control module and the information acquisition module according to the control information; the other part of the light beam is sent to the pyramid prism to obtain a parallel reflected light beam, and the terminal control system modulates the related information acquired by the information acquisition module into the parallel reflected light beam through the second modulator so as to send the parallel reflected light beam to the communication control main body;
the communication control main body divides the parallel reflected light beams into two parts through the first beam splitting device, wherein one part of the reflected light beams are demodulated through the first demodulator to obtain related information acquired by the communication terminal, and duplex communication is realized; and the other part of the reflected light beam is detected by the quadrant detector to obtain the position information of the communication terminal, so that the real-time position tracking of the communication terminal is realized.
Optionally, the laser emitter is a blue-green laser.
Optionally, the behavior control module controls the navigation direction and/or navigation speed of the communication terminal according to the requirement of the control information.
The present invention also provides a communication terminal as defined in any of the above.
The present invention also provides a communication control body as defined in any of the above.
The invention has the beneficial effects that:
according to the active tracking type laser communication system with the shared light source and the terminal, the two communication parties share one laser, and the laser is placed on the communication control main body which is relatively sufficient in energy and relatively simple in movement, so that the power of the laser can be larger, and a communication link is longer, so that the range of underwater laser communication is greatly enlarged, and the practicability of the underwater laser communication is improved; secondly, the communication terminal is not provided with a laser, but is provided with a pyramid prism, so that light rays incident in any direction can be reflected back in parallel; the communication terminal loads the information to be transmitted on the reflected light beam; therefore, communication is realized, the number of equipment on the communication terminal is reduced, energy consumption is reduced, the communication terminal can move more flexibly and rapidly, and the voyage is farther; when the communication control main body receives a light beam reflected by the communication terminal, the light spot returned by the communication terminal is monitored through the arranged quadrant detector to obtain the position information of the terminal, so that the position of the communication terminal is actively tracked, the objects which are communicated with each other can be ensured to be in an aligned state all the time, the continuity and stability of a communication link are ensured, and the key problem in underwater laser communication is solved.
Drawings
FIG. 1 is a schematic structural diagram of an active tracking underwater laser communication system with a common light source according to the present invention;
FIG. 2 is a schematic view of a pyramid prism structure of an active tracking underwater laser communication system with a common light source according to the present invention;
FIG. 3 is a schematic structural diagram of a quadrant detector of the active tracking type underwater laser communication system with a common light source according to the present invention;
in the drawing, 1 is a communication control main body, 2 is a communication terminal, 3 is a main body control system, 5 is a first modulator, 6 is a laser emitter, 7 is a second beam splitting device, 8 is a second demodulator, 9 is a terminal control system, 10 is a behavior control module, 11 is an information acquisition module, 12 is a second modulator, 13 is a pyramid prism, 14 is a first beam splitting device, 15 is a first demodulator, 16 is a quadrant detector, 17 is a first reflecting surface, 18 is a second reflecting surface, 19 is a third reflecting surface, 20 is a blue-green laser spot, 21 is a first quadrant photodiode, 22 is a second quadrant photodiode, 23 is a third quadrant photodiode, and 24 is a fourth quadrant photodiode.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following detailed description and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
the embodiment provides an active tracking type underwater laser communication system with a shared light source, please refer to fig. 1-3, which includes a communication control main body 1 and a communication terminal 2, wherein the communication control main body 1 includes a main body control system 3, a first modulator 5, a laser emitter 6, a first beam splitting device 14, a first demodulator 15 and a quadrant detector 16; the main body control system 3 is connected with a first modulator 5, and the first modulator 5 is connected with a laser transmitter 6; the body control system 3 is adapted to control the first modulator 5 to modulate the control information into the emitted light beam and to emit the emitted light beam by means of the laser emitter 6. Optionally, the laser emitter is a blue-green laser.
The communication terminal 2 comprises a second beam splitting device 7, a second demodulator 8, a terminal control system 9, a behavior control module 10, an information acquisition module 11, a pyramid prism 13 and a second modulator 12; the second beam splitting device 7 receives the emission beam, divides the emission beam into two parts of beams, wherein one part of beams is sent to the second demodulator 8 for demodulation to obtain control information; the terminal control system 9 controls the action of the behavior control module 10 and the information acquisition module 11 according to the control information; the behavior control module 10 controls the navigation direction and/or the navigation speed of the communication terminal 2 according to the requirements of the control information. The other part of the light beam is sent to the corner cube 13 to obtain a parallel reflected light beam, and the terminal control system 9 modulates the relevant information collected by the information collection module 11 into the parallel reflected light beam through the second modulator 12 to send to the communication control body 1.
The communication control main body 1 divides the parallel reflected light beams into two parts through the first beam splitting device 14, wherein one part of the reflected light beams are demodulated through the first demodulator 15 to obtain related information acquired by the communication terminal 2, and duplex communication is realized; the other part of the reflected light beam is detected by the quadrant detector 16 to obtain the position information of the communication terminal 2, so that the real-time position tracking and locking of the communication terminal 2 are realized. The objects which are communicated with each other are ensured to be in an aligned state at any time, and the continuity and the stability of a communication link are ensured.
The corner cube 13 is a corner cut out of a cube and includes three mutually perpendicular reflecting surfaces, namely a first reflecting surface 17, a second reflecting surface 18, and a third reflecting surface 19. The entrance surface of the corner cube 13 is an equilateral triangle, and the optical characteristics of the corner cube are that, when light is incident on the corner cube 13 from the entrance surface at any angle, the emergent light is always parallel to the incident light and is emitted through the sequential reflection of the three reflection surfaces.
The incident light ray (1) as shown in fig. 2 is reflected by the first reflecting surface 17, the second reflecting surface 18 and the third reflecting surface 19 and then exits in parallel with the incident light ray; the incident light ray (2) is reflected by the third reflecting surface 19, the second reflecting surface 18 and the first reflecting surface 17, and then is emitted in parallel with the incident light ray.
The quadrant detector 16 comprises a laser spot 20 incident thereon, a first quadrant photodiode 21, a second quadrant photodiode 22, a third quadrant photodiode 23, and a fourth quadrant photodiode 24, which are arranged in rectangular quadrants on the detector surface. When the laser spot 20 is positioned at the center of the quadrant detector 16, indicating that the heading of the communication terminal 2 is not changed; when the laser spot 20 deviates to a certain image limit, the outputs of the four photodiodes of the quadrant detector 16 are different, so that the course change of the mobile communication terminal 2 can be judged according to the outputs of the four photodiodes, and the information is sent to the main body control system 3 of the communication control main body 1, thereby realizing the active tracking and locking of the position of the mobile communication terminal 2 and ensuring the continuity and stability of a communication link.
In the specific operation process, the communication control main body 1 finishes control information 4 according to the work required to be finished by the mobile communication terminal 2 in the main body control system 3, and the control information 4 is loaded on a laser beam emitted by a laser emitter 6 through a first modulator 5. The laser beam emitted from the laser emitter 6 is projected to the mobile communication terminal 2 and then the mobile communication terminal 2 is released. The mobile communication terminal 2 divides the received laser beam into two parts by the second beam splitting device 7, and one part extracts the control information sent by the communication control main body 1 by the first demodulator 8 and sends the control information to the terminal control system 9. The terminal control system 9 sends information for controlling navigation, speed and the like of the mobile communication terminal to the behavior control module 10 through analysis processing to control the navigation behavior of the mobile communication terminal 2, and sends the other part of information for controlling the information acquisition mode of the communication terminal 2 to the information acquisition control module 11 to control the information acquisition of the communication terminal 2. The new information collected by the mobile communication terminal 2 is loaded on the parallel reflected light beam reflected by the corner cube 13 back to the communication control body through the second modulator 12, thereby realizing data communication to the communication control body 1. The laser beam received by the communication terminal 2 is reflected by the corner cube prism 13, and then returns to the communication control main body 1 in parallel to the original incident beam.
The communication control main body 1 receives the laser beam reflected by the communication terminal 2, and the laser beam is divided into two parts by the first beam splitting device 14, one part of the laser beam is extracted by the first demodulator 15 to obtain collected new information sent back by the communication terminal 2, and the information is analyzed, processed, stored and the like. Another part of the laser beam is incident on the quadrant detector 16. The quadrant detector 16 extracts the position information and the navigation tendency of the mobile terminal 2 based on the analysis of the returned light beam, and transmits the information to the body control system 3. After analyzing the position and navigation trend of the communication terminal 2, the main body control system 3 sends control information to correspondingly change the laser beam, so that the alignment state of the communication control main body 1 and the communication terminal 2 is ensured, and the continuity and stability of a communication link are ensured.
For example, the communication control main body 1 is a marine science research ship, and the mobile communication terminal 2 is an underwater autonomous underwater vehicle for performing research on marine biological resources in deep sea. The main body control system in the scientific research ship needs to have an information receiving function, an information editing function, an information processing and analyzing function, and can receive, process and analyze audio and video signals such as sound and pictures sent back from the main underwater vehicle, and data such as depth, pressure, temperature and the like obtained by measurement; the information for controlling the behavior of the autonomous underwater vehicle and the information for controlling the information acquisition mode of the autonomous underwater vehicle can be edited according to the position and the navigation information sent back by the autonomous underwater vehicle. The control information sent by the control system of the scientific research ship body is loaded on the light beam emitted by the blue-green laser through the modulator. The blue-green laser is an all-solid-state laser, or a direct-emitting semiconductor laser, or an external cavity surface-emitting semiconductor laser, the emission wavelength of the laser can be 450nm-530nm, and the attenuation of the laser beam in the wave band in the seawater is minimum.
The autonomous underwater vehicle is provided with the pyramid prism, and the beam splitting device, the demodulator and the like for the laser are arranged according to the technical scheme, and a control system in the autonomous underwater vehicle has the capability of identifying and processing information sent by a scientific investigation ship and sends corresponding control information to a behavior control module and an information acquisition control module of the autonomous underwater vehicle. The autonomous underwater vehicle can also load the collected information data onto the laser beam reflected back to the scientific investigation ship by the pyramid prism through a built-in modulator.
The scientific investigation ship receives the laser beam reflected by the autonomous underwater vehicle, and the laser beam is divided into two beams by the beam splitting device. One beam passes through the demodulator, extracts and obtains required data acquired by the autonomous underwater vehicle, and analyzes, processes and stores the data. And the other beam of laser is directly projected onto the quadrant detector. The scientific research ship judges and determines the position and the navigation trend of the autonomous underwater vehicle through the analysis of the output of the photodiode in the object limit detector, then edits information according to needs, changes the parameters of blue-green laser beams or changes the navigation behavior of the autonomous underwater vehicle, ensures the alignment state with the autonomous underwater vehicle, and ensures that a communication link between the scientific research ship and the autonomous underwater vehicle is continuously stable all the time.
For another example, the communication control main body 1 is a submarine for underwater navigation, the communication mobile terminal 2 is an underwater frogman, and the configuration and performance requirements of other devices are as described in the foregoing technical solution.
According to the active tracking type laser communication system with the shared light source, provided by the invention, two communication parties share one laser, and the laser is placed on the communication control main body which is relatively sufficient in energy and relatively simple in movement, so that the power of the laser can be larger, and a communication link is longer, thus the range of underwater laser communication is greatly enlarged, and the practicability of the underwater laser communication is increased; secondly, the communication terminal is not provided with a laser, but is provided with a pyramid prism, and can reflect light rays incident in any direction back in parallel; the communication terminal loads the information to be transmitted on the reflected light beam; therefore, communication is realized, the number of equipment on the communication terminal is reduced, energy consumption is reduced, the communication terminal can move more flexibly and rapidly, and the voyage is farther; when the communication control main body receives a light beam reflected by the communication terminal, the light spot returned by the communication terminal is monitored through the arranged quadrant detector to obtain the position information of the terminal, so that the position of the communication terminal is actively tracked, the objects which are communicated with each other can be ensured to be in an aligned state all the time, the continuity and stability of a communication link are ensured, and the key problem in underwater laser communication is solved.
The present embodiment further provides a communication terminal, which has the modules and functions of the communication terminal 2 as described above, and please refer to the description of the communication terminal 2 above, which is not described herein again.
The present embodiment further provides a communication control main body, which has the modules and functions of the communication control main body 1 as described above, and please refer to the description of the communication control main body 1 above, which is not described herein again.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (4)
1. The active tracking type laser communication system with the shared light source is characterized by comprising a communication control main body and a communication terminal, wherein the communication control main body comprises a main body control system, a first modulator, a laser transmitter, a first beam splitting device, a first demodulator and a quadrant detector; the main body control system is connected with the first modulator, and the first modulator is connected with the laser transmitter; the main body control system is used for controlling the first modulator to modulate control information into an emission light beam and emit the emission light beam through the laser emitter;
the communication terminal comprises a second beam splitting device, a second demodulator, a terminal control system, a behavior control module, an information acquisition module, a corner cube prism and a second modulator; the second beam splitting device receives the emission beam, divides the emission beam into two parts of beams, wherein one part of beams is sent to the second demodulator for demodulation to obtain the control information; the terminal control system controls the action of the behavior control module and the information acquisition module according to the control information; the other part of the light beam is sent to the pyramid prism to obtain a parallel reflected light beam, and the terminal control system modulates the related information acquired by the information acquisition module into the parallel reflected light beam through the second modulator so as to send the parallel reflected light beam to the communication control main body;
the communication control main body divides the parallel reflected light beams into two parts through the first beam splitting device, wherein one part of the reflected light beams are demodulated through the first demodulator to obtain related information acquired by the communication terminal, and duplex communication is realized; the other part of the reflected light beam is detected by the quadrant detector to obtain the position information of the communication terminal, so that the real-time position tracking of the communication terminal is realized;
the quadrant detector extracts the position information and the navigation trend of the communication terminal according to the analysis of the other part of the reflected light beam, and sends the position information and the navigation trend information to the main body control system, the main body control system sends the control information after analyzing the position and the navigation trend of the communication terminal, and correspondingly changes the parameters of the emitted light beam, so that the alignment state of the communication control main body and the communication terminal is ensured, and the continuity and stability of a communication link are ensured.
2. The common-source active tracking laser communication system as claimed in claim 1, wherein said laser transmitter is a blue-green laser.
3. The active tracking laser communication system with common light source as claimed in claim 1, wherein the behavior control module controls the navigation direction and/or navigation speed of the communication terminal according to the requirement of the control information.
4. A communication terminal, characterized in that the communication terminal is realized by the common light source active tracking laser communication system according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010312017.6A CN111404605B (en) | 2020-04-20 | 2020-04-20 | Active tracking type laser communication system with shared light source and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010312017.6A CN111404605B (en) | 2020-04-20 | 2020-04-20 | Active tracking type laser communication system with shared light source and terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111404605A CN111404605A (en) | 2020-07-10 |
| CN111404605B true CN111404605B (en) | 2023-03-28 |
Family
ID=71431649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010312017.6A Active CN111404605B (en) | 2020-04-20 | 2020-04-20 | Active tracking type laser communication system with shared light source and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111404605B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2387167A1 (en) * | 2010-05-10 | 2011-11-16 | ITT Manufacturing Enterprises, Inc. | Technique for simultaneously transmitting wide and narrow optical beacon signals |
| CN103973367A (en) * | 2014-05-09 | 2014-08-06 | 杭州电子科技大学 | Full duplex modulation reflex reflection wireless optical communication system and communication method thereof |
| CN107566037A (en) * | 2017-08-01 | 2018-01-09 | 杭州电子科技大学 | Duplexing reverse modulation MRR free space laser communication FSO systems |
| CN108306680A (en) * | 2017-12-19 | 2018-07-20 | 中国人民解放军战略支援部队航天工程大学 | A kind of reverse modulation laser netting communication system based on chatoyancy |
| CN108712209A (en) * | 2018-03-01 | 2018-10-26 | 中国人民解放军战略支援部队航天工程大学 | Laser communication fast Acquisition alignment methods based on retro-reflective properties |
-
2020
- 2020-04-20 CN CN202010312017.6A patent/CN111404605B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2387167A1 (en) * | 2010-05-10 | 2011-11-16 | ITT Manufacturing Enterprises, Inc. | Technique for simultaneously transmitting wide and narrow optical beacon signals |
| CN103973367A (en) * | 2014-05-09 | 2014-08-06 | 杭州电子科技大学 | Full duplex modulation reflex reflection wireless optical communication system and communication method thereof |
| CN107566037A (en) * | 2017-08-01 | 2018-01-09 | 杭州电子科技大学 | Duplexing reverse modulation MRR free space laser communication FSO systems |
| CN108306680A (en) * | 2017-12-19 | 2018-07-20 | 中国人民解放军战略支援部队航天工程大学 | A kind of reverse modulation laser netting communication system based on chatoyancy |
| CN108712209A (en) * | 2018-03-01 | 2018-10-26 | 中国人民解放军战略支援部队航天工程大学 | Laser communication fast Acquisition alignment methods based on retro-reflective properties |
Non-Patent Citations (2)
| Title |
|---|
| Performance Analysis of Laser Communication System based on Circular Polarization Modulating Retro-Reflector;Ruifeng Liu;《2019 IEEE 4th Advanced Information Technology, Electronic and Automation Control Conference (IAEAC)》;20200213;全文 * |
| 逆向调制无线激光通信全双工技术;陈静;《激光杂志》;20170625;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111404605A (en) | 2020-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101308211B (en) | Laser differential scanning detection method and system | |
| CN110557201A (en) | Multi-angle receiving device of underwater visible light communication mobile node | |
| CN111238568A (en) | Underwater communication detection integrated system | |
| CN109861762A (en) | It is a kind of based on sound-optical across medium convert communication system and method | |
| CN109471121A (en) | Double dielectric space Laser Photoacoustic radars | |
| CN111404605B (en) | Active tracking type laser communication system with shared light source and terminal | |
| CN114594450A (en) | Transmitting-receiving same-position polarization laser radar system based on optical rotator | |
| CN111490832B (en) | Underwater sound communication device and system | |
| CN111260900B (en) | Buoy-based multi-system heterogeneous data processing system | |
| CN115396027B (en) | Inter-aircraft distance measurement and communication integrated device and method | |
| KR102234484B1 (en) | Sonar system and detecting method using the same | |
| CN114070419B (en) | Underwater arbitrary shape detection array system and method based on high-speed wireless communication | |
| Spagnolo et al. | A brief survey on underwater optical wireless communications | |
| Samaniego-Rojas et al. | Novel link budget modelling for nlos submarine optical wireless links | |
| Mittal et al. | Different Communication Technologies and Challenges for implementing Under Water Sensor Network | |
| CN211744474U (en) | Underwater acoustic communication device and system | |
| CN113721226A (en) | Frequency modulation continuous wave laser radar | |
| Zhang et al. | Overview of Data Acquisition Technology in Underwater Acoustic Detection | |
| Weng et al. | Acousto-optic Cooperative Pointing, Acquisition and Tracking Method for Undersea Laser Communication | |
| Ren et al. | Simulation analysis of underwater wireless optical communication based on Monte Carlo method and experimental research in complex hydrological environment | |
| Mittal et al. | Different Communication Technologies and Challenges for Implementing UWSN | |
| Yang et al. | Multi-laser based cooperative scanning for AUV acquisition over UWOC networks | |
| US11967995B2 (en) | Automatic aiming method and apparatus for underwater optical communication | |
| CN109782292B (en) | Laser polarization detection device | |
| Aravind et al. | Localizing an underwater sensor node using sonar and establishing underwater wireless optical communication for data transfer applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |