780results about "Free-space transmission" patented technology

The invention provides a coast defense monitoring system based on unmanned aerial vehicle group collaboration and an application method thereof, and relates to the technical field of coast defense monitoring, and the coast defense monitoring system integrates air unmanned aerial vehicles, water surface unmanned ships and underwater unmanned ships, constructs a four-dimensional collaborative monitoring network, and combines a frequency domain resonance superposition technology and real-time analysis of marine environment variables. A dynamic three-dimensional environment model is generated, threat prediction of a time dimension is realized, multi-source sensor data can be fused in real time, a complete space contour of a target is formed, threat distribution in several hours in the future is predicted through environment change, for example, unmanned aerial vehicle deployment is adjusted in advance to cope with illegal border crossing behaviors in storms, and the risk of threatening is reduced. Quantum entanglement communication and acousto-optic hybrid communication ensure the stability and security of data transmission, and support millisecond response. According to the effect, the real-time performance and foresight of coast defense monitoring are remarkably improved, so that the system not only can quickly cope with current threats, but also can actively prevent potential risks.

The invention provides an optical image encryption method and system based on a partially coherent non-diffracting light beam, and belongs to the technical field of optical encryption and information transmission. Encoding to-be-encrypted image information into the light field cross-spectral density function; the method specifically comprises the following steps: discretizing an image as an expansion coefficient of a power spectral density function at a light source under a pseudo-mode substrate, and constructing a cross spectral density function; a complex amplitude modulation algorithm is adopted to convert light field complex amplitude distribution into a pure phase hologram, the pure phase hologram is loaded to a spatial light modulator, a multi-mode incoherent superposition partially coherent non-diffraction light beam is generated, and the multi-mode incoherent superposition partially coherent non-diffraction light beam interferes with a reference light beam to obtain a light field image; performing coordinate transformation and frequency domain filtering on the light field image to extract a complex coherence degree function; and reconstructing and restoring the original image information in combination with a preset key and a digital inversion algorithm. According to the method, the light beams are constructed based on pseudo-mode superposition, image hidden coding, transmission and decryption are realized by utilizing the characteristics of partially coherent light and non-diffraction light beams, and the method is suitable for optical communication and security information transmission.

The invention discloses a multi-mode optical signal transmission method and device, electronic equipment and a storage medium, and relates to the technical field of computers.The transmitted data stream is divided into a control signal and a data signal, the control signal is a visible light wave band, the data signal is an infrared wave band, and the control signal and the data signal are combined to a single multi-core optical fiber through a combiner; the optical network controller allocates subcarrier resources as required according to the change of network flow in a spectrum dynamic allocation mode to perform data transmission, so that the subcarrier resource allocation adapted to the change of network flow improves the dynamic adaptability, and the allocation of the subcarrier resources as required improves the equipment cooperation efficiency, and in the data transmission process, the data transmission efficiency is improved. Clock synchronization and signal encryption are realized through a quantum key distribution mode, and the security is improved.

The invention discloses an anti-turbulence free space optical communication method based on receiving and transmitting joint optimization, which balances the code length and the code rate through a Polar coding mode of an atmospheric turbulence channel, and ensures the coding and decoding overhead; meanwhile, a Transform model based on convolution enhancement is designed at a receiving end, learning of local features is enhanced through convolution, the relation between phase screen pixels is established, and a conjugate phase screen is given by the model for turbulence compensation. In order to solve the problem that in a free space optical transmission system, the atmospheric turbulence effect interferes with an OAM light beam, the influence of atmospheric turbulence interference on free space optical communication is relieved in a mode of joint optimization of the receiving end and the transmitting end. Error codes caused by atmospheric turbulence are corrected through Polar coding of the transmitting end, and the coupling efficiency of receiving light spots is improved after phase compensation of the receiving end, so that the mode purity obtained by corrected light spot images is improved, and the error rate of the system is reduced.

The invention discloses a slant path atmospheric turbulence phase screen generation and light field transmission simulation method. Belongs to the technical field of satellite-ground laser communication. The method comprises the following steps: firstly, establishing a three-layer height spectrum model in a slant-range atmospheric turbulence environment, then generating an initial field suitable for vacuum and turbulence environments by using an angular spectrum method, and generating n corresponding random dynamic phase screens according to atmospheric turbulence characteristics of different heights on a slant-range path and distribution characteristics of atmospheric wind speed. Superposing the initial field and the first phase screen, performing two-dimensional Fourier transform, and performing inverse Fourier transform on the transform field by using an angular spectrum method to obtain field distribution in front of the next phase screen; and repeating the process to pass through n phase screens in sequence, and finally obtaining the output field distribution of the uplink and the downlink. The method can effectively simulate the effects of refractive index fluctuation, wavefront distortion, light intensity flicker and the like caused by oblique-range atmospheric turbulence, and provides important theoretical support and application value for researching oblique-range laser transmission characteristics.

The invention discloses a laser channel atmospheric turbulence fading real-time compensation device and method based on a galvanometer system, and the method comprises the steps: enabling an incident light beam to irradiate a transparent PCB integrated with a photodiode array after the incident light beam is focused through a convex lens, obtaining the light intensity distribution of a current light spot through the photodiode array, and transmitting the light intensity distribution to a signal processing unit; the signal processing unit coarsely adjusts the deviation direction of the light spots according to the received light intensity distribution data, and aligns the part with the strongest light intensity in the light spots to the end face of the optical fiber; and based on the roughly adjusted light spot deviation direction, the signal processing unit dynamically adjusts the deflection angle of the galvanometer by using a gradient descent method according to the power measurement value of the receiving coupling module, so that the fine adjustment of the light spot deviation direction is realized, and the receiving coupling power is maximized. The objective of receiving optical power maximization is achieved, optical design, electronic control and algorithm optimization are combined, and atmospheric turbulence compensation with high cost performance is achieved.

The invention discloses a wireless optical communication alignment system and a capture alignment method thereof, and relates to the technical field of optical communication, and the method comprises the steps: a three-dimensional holder carries out the coarse alignment of an optical path between a transmitting end and a receiving end according to the direction of beacon light; an alignment device located at the top of the three-dimensional holder carries out fine alignment on the light path; the alignment device comprises a two-dimensional alignment structure, a control circuit and a device shell. The control circuit captures a light intensity feedback value of the light intensity sensor of the two-dimensional alignment structure, and adjusts an azimuth angle and a pitch angle of the optical fiber collimator of the two-dimensional alignment structure according to the light intensity feedback value so as to adjust lens orientations of the transmitting end and the receiving end; the device shell provides a supporting platform for the two-dimensional alignment structure and the control circuit and is connected with the three-dimensional holder. Coarse alignment and fine alignment are combined, accurate angle adjustment is achieved through light intensity feedback, efficient alignment of light paths of the transmitting end and the receiving end is ensured, meanwhile, the device shell provides stable support and connection, and the stability and reliability of the alignment process are guaranteed.

The invention discloses an anti-turbulence multi-parameter frontal light beam generation device and a statistical optimization method, and belongs to the technical field of free space optical communication. According to the method, the transmission stability and the system reliability of the light beam under random disturbance are remarkably improved by designing a multi-parameter regulation and control frontal light beam and combining a statistical optimization method based on a Kolmogorov turbulence model, so that a key solution with engineering feasibility and theoretical innovation is provided for an FSO system in a complex turbulence environment.

In an example, the present invention provides a system and method for underwater communications and sensing techniques using a gallium and nitride containing laser device configured to emit blue and / or green light. The techniques include LiDAR, LiFi, among others.

The invention discloses a far-field light field simulation test system for a laser communication terminal. The far-field light field simulation test system comprises a primary mirror assembly, a secondary mirror assembly, a turning mirror assembly, a rod assembly, a focal plane assembly and a frame, the focal plane assembly is composed of a reflector, a spectroscope, a transmitting optical fiber, a receiving optical fiber, a light beam quality analyzer and a coated dichroic mirror. The far-field simulation test system is an off-axis reflection type optical system developed based on the geometrical optics theory. The test system is a core component applied to ground demonstration and verification of space laser communication, serves as a collimator for optical system installation and calibration of a terminal on one hand, provides a complete machine test platform for the space laser communication terminal on the other hand, can serve as a transmitting end to provide a parallel light source and can also serve as a receiving end, and the space laser communication terminal is convenient to use. The detected laser communication terminal is detected, and optical parameters of light beam quality and transmission efficiency of the detected laser communication terminal are effectively evaluated.

The invention discloses a microwave laser hybrid link radio star calibration device and method suitable for deep space exploration, and relates to the field of spaceflight deep space exploration. Pointing calibration of a microwave and laser hybrid link of a deep-space large-aperture antenna is completed through radio star calibration, firstly, after pointing calibration and stable tracking of the microwave link are conducted on the microwave link, fine tracking is conducted on the laser link, pointing calibration of the laser link is completed, respective pointing error correction coefficients are formed, and real-time correction of antenna pointing is achieved. Microwave laser link hybrid radio star calibration is not limited by distance and geographical conditions, and real-time calibration can be realized; the beam of the laser link is narrower than that of the microwave link, the calibration precision is higher, and the system pointing precision and the photoelectric axis consistency precision can be improved. The method is simple in design, high in generalization, low in implementation difficulty and convenient to implement and popularize.

The invention discloses an integrated optical diversity receiving device, solves the problem of high power consumption when the influence caused by phase distortion and light beam pointing error is corrected in the existing free space optical communication, and belongs to the field of optical communication. The method comprises the steps that free space light focused by a lens is received by a multimode / few-mode optical fiber; the multi-mode light beams received by the multimode / few-mode optical fiber enter the photon lantern; the photon lantern is coupled to the single-mode fiber array after mode demultiplexing; each light beam in the single-mode fiber array enters a polarization beam splitting rotary combiner through an edge coupler; the polarization beam splitting rotation combiner performs transverse electric wave (TE) and transverse magnetic wave (TM) mode separation on the entered light beam, then rotates the separated TM polarization state light to a TE polarization state, combines the rotated TE polarization state light and the separated TE polarization state light, and then enters the MZI network; the MZI network is used for realizing optical coherent beam combination; a control circuit controls the merging of the light beams in the MZI network.

The invention discloses a light flux-inductance-energy integrated system, which comprises a flux-inductance signal generating device for generating flux-inductance integrated digital signals, and is characterized in that the output of the flux-inductance signal generating device is connected with a digital-to-analog converter so as to convert the flux-inductance integrated digital signals into analog electric signals; an analog electric signal output by the digital-to-analog converter is connected with the transmitter through the driving circuit, and the analog electric signal is converted into an optical signal through the transmitter; an optical signal output by the emitter generates two light beams through the spectroscope; one light beam is connected with an information decoding module and a sensing processing module; and the other light beam is connected with the energy collection module for energy collection. The optical flux and inductance integrated system provided by the invention is simple to implement and easy to integrate with existing facilities, and can provide integrated gains such as shared hardware resources and reduced mutual interference.

The invention provides a target position prediction method and device based on Kalman filtering, equipment and a medium, and relates to the technical field of space optical communication. The method comprises the following steps: setting an initial state of a Kalman filter according to an initial position of a target light spot; the predicted value of the target light spot at the T moment is calculated by using the predicted value of the Kalman filter at the T-1 moment state; obtaining an observation value of the target light spot at the T moment; and correcting the predicted value at the T moment according to the observed value at the T moment to obtain the position information of the target light spot at the T moment.

The invention provides a communication device and a communication method, relates to the field of communication, and is beneficial for reducing impact on the performance of the communication device due to different atmospheric turbulence intensities and maintaining the stability of the performance of the communication device. The communication device comprises an optical receiving module, a first optical transmission module, a second optical transmission module and a control module, the optical receiving module is used for receiving optical signals, the first optical transmission module is used for performing multimode transmission on the optical signals from the optical receiving module, and the second optical transmission module is used for performing single-mode transmission on the optical signals from the optical receiving module; the control module is used for controlling the optical signals from the optical receiving module to be input into the first optical transmission module under the condition that target parameters conform to a first condition, or controlling the optical signals from the optical receiving module to be input into the second optical transmission module under the condition that the target parameters conform to a second condition, and the target parameters comprise parameters related to atmospheric turbulence; the intensity of the atmospheric turbulence in the first condition is greater than that in the second condition.

The invention provides a light beam demodulation detector based on a multi-layer metasurface and a construction method of the light beam demodulation detector based on the multi-layer metasurface, and the light beam demodulation detector comprises an image processing chip and the multi-layer metasurface. The structured light beam to be identified generates a plurality of diffraction beams after passing through the diffraction neural network formed by the multi-layer metasurface; the diffracted light beams generate different light intensity distributions on the upper surface of the image processing chip, so that the image processing chip determines the type of the structured light beams to be recognized based on the light intensity distributions, and demodulation recognition of the light beams is achieved. According to the light beam demodulation detector based on the multi-layer metasurface and the construction method of the light beam demodulation detector, a demodulation component is constructed by utilizing diffraction neural network simulation and the multi-layer metasurface so as to realize demodulation transmission of structured light beams, and recognition of the types of the light beams is realized in combination with an image processing chip; and a compact light beam demodulation detection device with a miniaturized structure is optimally designed.

The invention discloses a deep sea mineral lifting unmanned transportation system. According to the system, an unmanned carrier-intelligent execution-elastic scheduling framework is constructed, and the system comprises four modules including unmanned carrying equipment, a communication network system, a scheduling control center and a support safeguard system. The unmanned carrying equipment realizes mineral transportation based on buoyancy driving; the communication network adopts a layered redundant architecture of underwater sound OFDM and a laser emergency link, and high-reliability communication and centimeter-level positioning are guaranteed; the scheduling control center improves the operation efficiency through intelligent task allocation and trajectory planning; the support and guarantee system integrates energy management, digital twin monitoring and emergency response mechanisms. The operation process adopts a mode of mainly unmanned autonomous and assisted by remote monitoring, and the links of ballast diving, acousto-optic docking, buoyancy regulation and control, mother ship dynamic unloading and the like are covered. The deep-sea mineral lifting efficiency, maneuverability and reliability are remarkably improved, and core technical support is provided for deep-sea resource development.

The invention relates to the technical field of digital demodulation, in particular to a digital demodulation method suitable for deep ultraviolet light communication, which comprises the following steps of: adopting multiple delay processing with half code element width, and respectively carrying out double extraction processing on a discrete sampling signal which is not subjected to delay processing and a plurality of delay sampling signals to obtain a plurality of delay extraction signals; in this way, the key sampling time in the coverage code element period can be ensured, and a basis is provided for subsequent accurate synchronization; a plurality of delay extraction signals are respectively input into corresponding equalization processing units, a preset local training sequence is loaded to each equalization processing unit to obtain a plurality of equalization filtering signals, and the plurality of equalization filtering signals and the preset local training sequence are respectively subjected to related judgment processing, so that the inter-symbol interference is inhibited, and meanwhile, the equalization processing efficiency is improved. The synchronization signal can be quickly screened out, so that the problem that inter-symbol interference and synchronization are difficult to consider in a traditional demodulation method is solved, and the demodulation efficiency and reliability are remarkably improved.

The invention belongs to the technical field of wireless optical communication, and particularly relates to a mobile edge computing task unloading and resource allocation method in wireless optical communication assisted by an unmanned aerial vehicle. According to the method, the data model, the queue model and the communication model are constructed, a task unloading strategy is optimized, and efficient and low-power-consumption edge computing resource allocation is achieved; an optimization technology is adopted to decompose a long-term optimization problem into sub-problems of each time slot, and the sub-problems are solved through a continuous convex approximation algorithm and a BFGS algorithm; finally, joint optimization of task unloading, computing resources, transmitting power, task return transmitting power, time slot scheduling and UAV trajectory is realized, and an optimization framework with more fine granularity in multi-dimensional allocation is formed. The characteristics of flexibility of the unmanned aerial vehicle and high bandwidth of wireless optical communication are utilized, the long-term throughput of the system is improved, the long-term power consumption of Internet of Things equipment is reduced, the high real-time performance of task processing is ensured, and the method is suitable for outdoor mobile Internet of Things application scenes with strict requirements for low power consumption and high real-time performance.

The invention provides an optical fiber nutation coupling system and method based on double-optical-wedge scanning, and relates to the technical field of free space optical communication, and the system comprises a double-optical-wedge scanning system, a nutation coupling mirror and an optical fiber which are sequentially arranged along an optical path. The double-optical-wedge scanning system is provided with two optical wedges, the vertical faces are parallel and opposite, the wedge faces are opposite, and nutation scanning is carried out through reverse and / or same-direction rotation of the two optical wedges. The nutation coupling mirror is used for focusing the target light beam into a light spot to be emitted to the optical fiber; the optical power meter, the nutation controller, the double-optical-wedge scanning system driver and the double-optical-wedge scanning system are electrically connected in sequence; the optical power meter is connected with the optical fiber transmitting end and used for measuring the optical power of the target beam coupled into the optical fiber; and the nutation controller is used for resolving the rotation angles of the two optical wedges, controlling the driver of the double-optical-wedge scanning system to apply voltage, and performing linkage control on the two optical wedges. According to the invention, the rotation of the two optical wedges is dynamically optimized, so that high and stable light output coupling efficiency is ensured, and power consumption is reduced.

The invention relates to a coherent free space optical communication system based on an RBMGC optimization algorithm, belongs to the technical field of optical communication, and solves the problem of poor high-order aberration correction effect caused by insufficient high-order phase aberration correction capability of an existing SLAO system optimization algorithm under a complex atmospheric turbulence condition. The SLAO system comprises a high-speed camera, a wavefront controller and a wavefront corrector, an RBMGC optimization algorithm is operated in the wavefront controller to generate an optimal voltage control signal of the wavefront corrector, and the RBMGC optimization algorithm adopts a self-adaptive step length updating mode established based on a gradient correction mechanism to update the position in an exploration stage and a development stage. Therefore, the search process is optimized. The RBMGC optimization algorithm has better convergence rate, correction precision and robustness when correcting the high-order aberration under the complex turbulence condition, the correction effect of the SLAO system on the high-order aberration is improved, and the communication performance of the CFSOC system is improved.

The invention discloses a high-capacity optical communication adaptive damage compensation and demodulation system, which is applied to the technical field of optical communication. Comprising a beam splitter, an XFTC-Net model, a wavefront corrector and an OAM demultiplexer. The beam splitter divides the received distorted OAM light beam into transmission light and reflection light, the transmission light and the reflection light are distorted OAM information light beams, the transmission light is input to the wavefront corrector, the reflection light is input to the XFTC-Net model, the wavefront corrector completes distorted OAM light beam adaptive damage compensation by using a first output result of the XFTC-Net model, and the distorted OAM light beam adaptive damage compensation is realized by using a second output result of the XFTC-Net model. And the OAM demultiplexer completes OAM light beam demodulation by using the second output result of the XFTC-Net model. According to the invention, on the basis of completing atmospheric turbulence distortion phase reconstruction, the mode identification of the OAM light beam is realized, a probe light beam path does not need to be additionally arranged, and while the correction precision is ensured, the system complexity is effectively reduced, and the OAM integrating miniaturization and high precision is realized.

The invention provides an optical fiber nutation coupling method, system and device based on an electro-optical crystal, and relates to the technical field of free space optical communication, and the device mainly comprises the electro-optical crystal, a convex lens, an optical fiber, a beam splitter, an optical power meter, a controller and a driver. The electro-optical crystal comprises a first electro-optical crystal and a second electro-optical crystal which are arranged in sequence, and is arranged on a light path between an external light source and the convex lens; the optical power meter is used for detecting the power of an optical signal, converting the power into a first electric signal and inputting the first electric signal to the controller. The characteristic that the refractive index of the electro-optical crystal directionally changes along with an electric field is utilized, the three-dimensional angle error generated when laser is incident and coupled to the center of the optical fiber end face is adjusted and compensated in real time by modulating voltage, and it is ensured that signal laser emitted by an external light source is incident to the center of the optical fiber end face accurately and vertically in real time; therefore, the efficiency, quality and stability of free space laser communication are improved; the device is simple in structure, small in size and wide in application range.

The invention discloses an acoustic optical communication positioning method for an autonomous adjustment channel of an underwater robot, and the method comprises the steps: constructing an underwater dynamic acousto-optic fusion repeater, achieving the wide-area guaranteed-bottom connection with the underwater robot through an acoustic link, and providing meter-scale precision coarse positioning covering a whole operation region; the method provides prior information for rapid establishment of a subsequent optical link, further dynamically compresses an optical search area to realize rapid and accurate link establishment, and performs autonomous and smooth switching among acoustic, optical and acousto-optic hybrid transmission modes according to real-time link quality assessment (signal-to-noise ratio), thereby realizing acousto-optic deep coupling and cooperative scheduling, and improving the reliability of the system. The system has the advantages of long-distance reliable connection, short-distance high-speed data return, high-precision positioning and the like, and solves the core technical problems that the distance and the speed cannot be obtained at the same time and the positioning precision and the coverage range are mutually restricted in the prior art.

The invention discloses a space optical communication tracking system servo control method based on active disturbance rejection, and belongs to the technical field of optical communication, and the method comprises the steps: simplifying a typical coarse-fine two-stage capture tracking structure, employing a first-stage tracking design, building a coarse tracking system model, analyzing the internal and external disturbance of a system, and simulating a satellite vibration signal; an improved active-disturbance-rejection controller is designed and applied to the space optical communication coarse tracking process, the controller suppresses and eliminates disturbance and noise on the basis of an improved extended state observer, and a nonlinear function with a better effect is adopted for construction; the feasibility of the control algorithm and the tracking performance of the tracking system are verified through a static tracking experiment.

The invention discloses a wavefront distortion correction method based on a dynamic adaptive MESSA algorithm and a coherent free space optical communication system. The problems that an existing method is prone to falling into a local optimal solution, the correction effect is poor under dynamic turbulence, and the adaptive capacity is weak are solved. According to the method, an individual position is initialized through a Circle chaotic mapping method, iterative optimization is carried out in combination with a Levy flight strategy and a variable spiral search strategy, and a step size control parameter, a safety threshold, spiral strength and a spiral adjustment coefficient are dynamically adjusted through a double-discrimination dynamic adaptive parameter adjustor. And reducing the population scale according to a nonlinear population reduction strategy, finally outputting an optimal individual position, and driving the deformable mirror to perform wavefront correction according to a control voltage vector corresponding to the optimal individual position. According to the invention, the dynamic adjustment of the algorithm parameters and the population structure is realized, and the adaptability, convergence speed and stability of the wavefront distortion correction method in the dynamic turbulence environment are enhanced.

The invention discloses a generating device capable of generating an ultra-flat broadband micro comb. The generating device comprises a pump pulse generating module, a micro comb generating module and a micro comb generating module, the pumping pulse compression module is connected with the pumping pulse generation module; the high-Q-value microcavity module is connected with the pumping pulse compression module; and the micro comb detection and feedback module is respectively connected with the high-Q-value micro-cavity module and the pump pulse generation module, and is used for monitoring the output spectrum and power change of the high-Q-value micro-cavity module and adjusting the output wavelength of the picosecond pulse light according to the output spectrum and power change so as to stabilize the ultra-flat broadband micro comb. By arranging the high-Q-value micro-cavity, the spectral bandwidth of the micro-comb can be effectively expanded, and the ultra-flat broadband micro-comb is output; meanwhile, the defects that the hyperbolic secant single soliton micro-comb is poor in flatness and narrow in bandwidth are overcome, and the micro-comb has obvious advantages in the application field with high requirements for the flatness and the spectral bandwidth at the same time.

The invention discloses a Rydberg atom-based microwave regulation multi-channel frequency hopping device, which comprises an atomic gas chamber, probe light enters and passes through the atomic gas chamber from one end of the atomic gas chamber and then is reflected to a photoelectric detector through a polarization splitting prism, and coupled light is reflected by a reflector and then is transmitted to the photoelectric detector. The coupling light passes through the polarization splitting prism and enters the atomic gas chamber from the other end of the atomic gas chamber, and the coupling light reflected by the reflector and the probe light are overlapped in optical path and opposite in propagation direction; a local oscillator microwave signal generator and an auxiliary microwave signal generator are arranged on one side of the atomic gas chamber, the local oscillator microwave signal generator and the auxiliary microwave signal generator emit microwave signals into the atomic gas chamber, and the other side of the atomic gas chamber receives radio frequency signals to be measured; the invention further discloses a microwave regulation and control multi-channel frequency hopping method based on the Rydberg atoms. By reasonably configuring the frequency of the auxiliary microwave signal and the frequency of the local oscillation microwave signal, flexible frequency hopping of cesium Rydberg atoms in six different channels is achieved.

The invention is suitable for the technical field of communication fusion, and particularly relates to a wireless and wired fusion data center interconnection structure, device and method. The cellular network clusters are connected through optical fiber links, each cellular network cluster is composed of a plurality of cellular units, and the cellular units in the same cellular network cluster are interconnected in a wireless link mode. By building a wireless free space optical communication link, direct interconnection between cellular units in the same cellular network cluster is realized, the routing hop count is reduced, the communication time delay is reduced, the flexibility and efficiency of network interconnection are greatly improved, and by combining the optical fiber, the communication efficiency is improved. The high stability and the anti-electromagnetic interference capability of the optical fiber can be fully utilized, a flexible redundant path can be provided for a wireless free space optical communication link, and the continuity and the reliability of communication can still be kept when a wired link is blocked.

The invention provides an unmanned aerial vehicle wireless energy supply method and system based on multiband laser and intelligent tracking and pointing, and relates to the technical field of unmanned aerial vehicle wireless energy transmission. The method comprises the following steps: dynamically selecting a 1064nm or 1550nm laser band according to a real-time distance between the unmanned aerial vehicle and a transmitting end, and shaping a Gaussian beam into a flat-topped beam through a variable-focus collimating lens group; a tracking and aiming mode combining coarse tracking and fine tracking is adopted, in fine tracking, through an infrared beacon and a CCD image servo closed loop, observation noise covariance is dynamically estimated in combination with a Transform-AKF fusion algorithm, and process noise covariance is adjusted in a self-adaptive mode; the offset of the reflection light spots is detected through the reverse reflector to realize jitter compensation; fusing the fine tracking angle and the jitter compensation amount to generate a final aiming instruction; meanwhile, according to energy feedback data and tracking errors of a receiving end, laser output power is adjusted in a self-adaptive mode through a PID algorithm. According to the invention, long-distance, high-precision and self-adaptive unmanned aerial vehicle wireless energy transmission is realized.