65 results about "Stratosphere" patented technology

The invention provides a stratosphere aircraft cross-day and cross-night task trajectory planning method and system in a dynamic wind field environment. The method comprises the steps that a task target and task constraints are acquired; acquiring external wind field information; constructing a motion model and a cost function of the stratosphere aircraft in the dynamic wind field; and outputting the lowest feasibility requirement of the cross-day and cross-night task under the dynamic wind field condition and the optimal trajectory when the task is completed by using a level set method in combination with particle swarm optimization. The method has the advantages that a combination framework of the level set algorithm and the particle swarm algorithm is innovatively provided, the problem that the level set algorithm has strong dependence on initial conditions is solved, meanwhile, the search space dimension is reduced, and the probability that the algorithm falls into a local optimal solution is reduced; by flexibly designing a fitness function, conditions such as speed constraint, energy consumption constraint and task feasibility of a stratosphere aircraft cross-day and cross-night arrival or residence task can be comprehensively considered, and the globality and constraint compatibility of trajectory optimization are realized.

A solar powered plane configured to operate in the stratosphere includes a hinged vertical stabiliser that that pivots about a hinge; the stabiliser extends both above the fuselage and also below the fuselage, and the base of the vertical stabiliser includes a skid. The hinged vertical stabiliser is configured such that when the skid contacts the ground on landing, the top of the vertical stabiliser pivots forwards around the hinge point, minimising damage to the aircraft on landing. the skid includes a lightweight, replaceable sacrificial layer.

The invention relates to the technical field of meteorological remote sensing detection, and discloses a wind profile radar multi-mode detection system and detection method. The wind profile radar multi-mode detection system comprises a mode control module which is used for storing a parameter library of low-mode detection parameters, medium-mode detection parameters and high-mode detection parameters, executing mode switching logic and generating control signals of pulse width and repetition period; the transmitting and receiving module is used for transmitting corresponding pulse signals according to the mode detection parameters, receiving echoes and realizing A / D conversion through high-speed acquisition; the data fusion module is used for carrying out time synchronization and overlapped region weighted fusion on the multi-mode detection data to generate continuous wind profile data; and the parameter optimization module is used for dynamically adjusting the detection parameters of each mode based on the real-time echo signal-to-noise ratio and the high resolution requirement. Through low, medium and high multi-mode cooperative detection, the contradiction between the height resolution and the detection height in single-mode detection is solved, and continuous high-precision detection of a full-height wind field from a boundary layer to a stratosphere is realized.

The invention discloses a space grid method for interconversion of geodetic height and barometric height, and belongs to the technical field of aviation navigation and geographic information systems. According to the method, the mutual conversion of geodetic height and barometric height is realized through establishing a global space-time grid reference system, establishing a space-time grid data base, converting barometric height to geodetic height, inversely converting the geodetic height to the barometric height, and carrying out reference conversion, data fusion and grid compression between the barometric heights. According to the method, the vertical availability of the height estimation value obtained through air pressure measurement within the height range within the stratosphere can be improved, the method is suitable for most weather conditions, the height estimation value with the precision reaching the ten-meter level can be achieved, and compared with an existing ISA-based method, the precision is higher, the application range is wider, and the application range is wider. The method can effectively improve the reliability of flight control systems of various aircrafts, and has wide application prospects in urban air traffic operation.

The invention discloses an atmospheric turbulence phase screen generation method based on layered physical constraints, and belongs to the crossing field of optical communication and artificial intelligence. According to the method, a diffusion probability model is combined with layered atmospheric physical constraints, independent physical constraint loss functions are established for a boundary layer, a troposphere and a stratosphere of the atmosphere, and it is ensured that a generated phase screen conforms to turbulent flow statistical characteristics of all layers through power spectrum density constraints and structure function constraints; enhancing feature learning of each layer of phase screen by adopting a physically guided attention mechanism; and designing a time-dependent constraint weight strategy, and adaptively adjusting the physical constraint strength in the diffusion denoising process. The method solves the technical problems that the vertical layering difference is ignored, the physical consistency is insufficient, and the generation quality depends on a large amount of labeled data in the existing method, is particularly suitable for high-fidelity atmospheric turbulence modeling of a satellite laser communication link, and can also be widely applied to the fields of free space optical communication system simulation, adaptive optical system design and the like.

According to the efficiency adaptation method applied to the solar communication unmanned aerial vehicle in the stratosphere, collaborative optimization of energy management and communication service of the solar unmanned aerial vehicle in the stratosphere environment is achieved by constructing a dynamic solar radiation database, predicting communication load and setting a dynamic threshold value and a multi-objective optimization mechanism. The method has the capability of responding to solar radiation fluctuation and communication load change in real time, effectively avoids the problems of misalignment of electric quantity management and interruption of a communication link, and remarkably improves the cruising ability and task reliability of the unmanned aerial vehicle. Meanwhile, according to the method, through a data-driven closed-loop optimization mechanism, the energy utilization efficiency and the communication quality are both considered, and the method has good practicability and popularization value.

The invention relates to the technical field of laser radars, and discloses an all-solid-state troposphere and stratosphere ozone detection laser radar system, which comprises a pump light generation module used for generating an ultraviolet laser beam; the solid-state ultraviolet laser module is used for dividing the ultraviolet laser beam into four paths of detection laser to respectively form a differential absorption wavelength pair for detecting the ozone in the stratosphere and a differential absorption wavelength pair for detecting the ozone in the troposphere; the wavelength real-time monitoring module monitors the frequency of the four paths of detection laser in real time; the echo optical signal receiving module is used for receiving back scattering echo optical signals of the detection laser at different heights and converting the back scattering echo optical signals into electric signals; and the signal acquisition and storage module acquires the electric signal and stores the electric signal as a digital signal. According to the invention, four narrow-band laser ozone detection wavelengths are generated through an optical parametric oscillation technology, and meanwhile, the all-solid-state design of the system is realized, so that the ozone concentration of the stratosphere and the troposphere can be detected at the same time, and continuous observation in the daytime and at night can be realized.

The utility model discloses a high-subsonic stratospheric whole-machine static elimination drone, comprising a fuselage and a nose cover, wings, a left tail wing, and a right tail wing installed on the fuselage, copper braids are provided on both sides of the nose cover, fuselage, and wings, and copper braids are provided on the left tail wing and the right tail wing; the tops of the left tail wing and the right tail wing are respectively installed with a left tail wing discharge brush and a right tail wing discharge brush; each copper braid is electrically connected to the left tail wing discharge brush and the right tail wing discharge brush. The utility model can effectively release the charge energy on the surface of the drone body into the atmosphere, avoiding the potential danger caused by large-area charge accumulation, solving the problem that local discharge may cause poor discharge effect, generate interference and affect the work of the drone communication and navigation system, and can more effectively release the charge energy on the surface of the drone body into the atmosphere, avoiding the potential danger caused by large-area charge accumulation.

The present invention provides a lighter-than-air (LTA) vehicle interceptor for neutralizing and / or capturing a non-cooperative LTA vehicle, such as a spy balloon. Embodiments of the interceptor may be equipped with various subsystems useful in missions to intercept, neutralize and ideally capture a threat payload attached to the non-cooperative LTA vehicle, even at stratospheric altitudes. Such subsystems may include an imaging device, severing effector, grasping effector, puncturing effector, weight-bearing apparatus, power subsystem, navigation subsystem, communication subsystem and propulsion.

The invention relates to the technical field of electrical digital data processing, and provides a stratosphere vortex dynamics-based meta-heuristic optimization method, which comprises the following steps of: initializing vortex optimization parameters; randomly generating an initial population in the search space, and calculating the fitness value of each individual in the initial population; according to a dynamic vortex center construction strategy, determining a vortex center based on the fitness value, and judging whether to trigger an SSW mechanism; updating the population according to a triple dynamics mechanism collaborative updating mechanism; determining a stage type, and updating position parameters by applying different mechanisms according to the stage type; judging whether a termination condition is met or not; if yes, archiving an optimal solution; otherwise, updating the iteration counter and returning. The global exploration capability and the local optimal escape capability of the algorithm are enhanced by combining the nonlinear characteristic of an SSW splitting mechanism, and the possibility of exploring and positioning a high-quality solution is increased by introducing three mechanisms to cooperatively guide the position update of each search agent.

The invention relates to the technical field of airship control, in particular to a floating aircraft control method and system oriented to an extreme environment. The control method comprises the following steps that environment parameters and running state data of the floating aircraft are collected in real time through a multi-mode sensor, and the environment parameters comprise the air speed of the stratosphere or under the stratosphere, the ultraviolet radiation intensity, the external temperature gradient and the air pressure fluctuation value; the operation state data comprises an air bag sealing index, propeller output power, a counterweight slide rail position and the residual capacity of the energy storage unit. Through the dynamic pressure compensation and self-repairing technology, the problem of sealing failure of the floating aircraft in an extreme environment is solved; and multi-mode wind resistance control and hybrid energy optimization are combined, so that the flight path precision and the cruising ability are remarkably improved.

An observation system 1 includes: a ground device 10 that is installed on the ground; and a balloon 20 that moves to the stratosphere P. The balloon 20 includes: weather sensors N that observe the atmosphere to obtain an observation result; and a control device 30 that communicates with the ground device 10 and controls the weather sensors. The ground device 10 transmits, to the control device 30, control signals for the weather sensors N. The control device 30 controls the weather sensors in accordance with the control signals received from the ground device 10.

System and method for intercepting intruding stratospheric balloons. The method comprises: receive (102, 104) a high-altitude wind profile (6) and a position (P0) of an intruding stratospheric balloon (2); Determine (106, 108), using the high-altitude wind profile (6), a future trajectory (10) of the intruding stratospheric balloon (2) and ascending trajectories (11a, 11b) of an intercepting stratospheric balloon (5) that intercept the future trajectory (10) at different positions (PF1, PF2); select (110) an upward path (11a); to perform a launch (112) of the intercepting stratospheric balloon (5) at a launch location (Li) and time (tL1) associated with the selected upward trajectory (11a); detect (114) deviations of the trajectory followed by the interceptor stratospheric balloon (5) during ascent with respect to the selected ascending trajectory (11a) and correct such deviations by activating a flight control system (12) of the interceptor stratospheric balloon (5); and activate (116) an interception apparatus (13) of the intercepting stratospheric balloon (5) once the interception (15) of the intruding stratospheric balloon (2) occurs.

To provide a rocket launch system that floats a hybrid rocket low in danger of explosion etc., up to the stratosphere with a floating body and launches it from the stratosphere.SOLUTION: A rocket launch system includes a floating body which floats in the stratosphere, a rocket supported by the floating body and launched from the floating body, and an attitude control device controlling the attitude of the rocket supported by the floating body, wherein the rocket comprises a fairing part loaded with a satellite or cargo and a rocket engine part generating propulsion power, and the rocket engine part is a hybrid rocket which generates the propulsion power by letting a liquid oxidizer react with solid fuel.SELECTED DRAWING: Figure 1

The invention discloses a bionic air-space cooperative atmosphere intelligent regulation and control system and method. The system comprises a twin digital earth, an atmospheric brain, an air-space AI mobile base comprising a troposphere special base and a stratosphere special base, a plurality of macroscopic telescopic pipelines, an array composed of macroscopic intelligent sunshade reflectors, and a multifunctional intelligent micro-unit cluster. A regulation and control strategy is generated through multi-source data assimilation and intelligent strategy optimization, physical states such as temperature and humidity of air masses in a pipeline are actively adjusted through an environment control section in a macroscopic telescopic pipeline, and low-energy-consumption, stepped and directional transportation of cloud water substances is achieved by actively utilizing the chimney effect formed by the atmospheric environment; controllable adjustment of solar radiation input is achieved through dynamic management of the intelligent sunshade reflector array. The system has four operation modes which can be evolved according to technical capability stages from macroscopic direct intervention to global intelligent collaboration, and is configured with a module recovery and platform stability anchoring mechanism so as to realize emergency intervention on disastrous weather.

Provided is a technique with which it is possible to contribute to realizing a film material which is used in environments from the stratosphere to extraterrestrial environments, and is not susceptible to breaking at low temperatures. This film material (20) is used in environments from the stratosphere to extraterrestrial environments, and comprises a resin film, said resin film having an estimated elongation at break value at -100°C in any area S of at least 400,000 mm2 of at least 10% in both the MD direction and the TD direction, as calculated using a Weibull analysis which uses an elongation at break value measured at -100°C in conformity with JIS K 7127:1999 (test piece type 5).

The invention provides a method for selecting calibration height layers of satellite-borne laser radars with different wavelengths, and relates to the field of atmospheric remote sensing. On the basis of SAGE III / ISS and reanalysis data, optical parameters of a stratosphere blue light wave band are accurately calculated by combining wavelength conversion and data fusion; comprising the following implementation steps: step 1), selecting SAGE III / ISS data and preprocessing the data; 2) correcting the refractive index of the aerosol, and carrying out stratosphere scattering calculation; 3) establishing a stratosphere aerosol optical parameter wavelength conversion model; step 4), calculating a stratosphere blue light aerosol backscattering coefficient and an atmospheric molecule backscattering coefficient; step 5), data space-time matching fusion; and step 6), calculating an aerosol scattering ratio and selecting a calibration height.

The invention discloses a stratospheric aerostat pressure difference control method, which belongs to the field of flight control, is used for aerostat pressure difference control, and comprises the following steps: starting an aerostat pressure difference control program, detecting the internal temperature condition of an aerostat caused by external environment change, judging whether the aerostat is in a normal environment or not, if so, changing the volume of an internal phase change air bag, and if not, judging that the aerostat is in the normal environment. If yes, the internal pressure of the aerostat changes, then whether the pressure difference is within the safety range or not is judged, if not, the volumes of the internal and external phase change air bags cooperatively change, the internal pressure change and the height change of the aerostat enable the external atmospheric pressure of the aerostat to change, and then whether the pressure difference is within the safety range or not is judged; and judging whether the pressure difference is within a safe range, if not, returning to detect the internal temperature condition of the aerostat caused by the change of the external environment, and if so, ending the pressure difference control method. Under the normal day and night alternation condition, the volume of the internal phase change air bag is adjusted, the internal pressure of the aerostat is adjusted, and the internal and external pressure difference of the stratospheric aerostat is always kept within a safe range.

Particles, powders thereof, particle dispersions throughout the stratosphere and corresponding methods for solar radiation modification and management (SRM) are provided. Disclosed particles are safe for inhalation and in the biosphere, inert towards most compounds in the atmosphere, optionally produced in large-scale production of millions of tons per year, scatter in the visible and ultraviolet (UV) ranges without significant absorption, scatter and minimize absorption in the infrared (IR) range, sized to achieve a residence duration in the stratosphere that is longer than a year, optical properties and safety criteria, tagged for monitoring dispersal and distribution, and dispersible from an airplane with a bulk density over 0.3 g / cc and with respect to the required energy and air available for dispersal from the airplane.

The invention relates to a civil mobile spaceflight launcher, which is invented for coping with sudden accidents, has a flight function, can take off and land vertically, has multiple flight modes, is not limited by airport runways, can take off and land under various regional environment conditions, can flexibly select a launching area, and is convenient to use. The rocket can be brought to the stratosphere to be launched, the spacecraft can be flexibly selected to be launched in the stratosphere above areas such as unmanned areas, desert areas, waste parks and seas when passing through the earth, pollution to the ground is reduced, damage to human caused by flying fragments is reduced, and disasters caused by rocket falling due to unsuccessful launching in accidents are reduced. Ground facility construction is reduced, configuration of ground crew is reduced, and flight personnel can be received back from the outer space or needed materials can be conveyed at any time.

An observation system 1 comprises: a ground device 10 installed on the ground; and a balloon 20 moving to a stratosphere P. The balloon 20 includes a weather sensor N for observing the atmosphere to obtain an observation result, and a control device 30 for communicating with the ground device 10 and controlling the weather sensor. The ground device 10 transmits a control signal for the weather sensor N to the control device 30. The control device 30 controls the weather sensor in accordance with the control signal received from the ground device 10.

A system to facilitate reduction of solar radiation impacting Earth uses a plurality of porous particles to be introduced into Earth's stratosphere at a distance of at least 10 kilometers above sea level. Each porous particle has discrete pores dispersed within a polymeric continuous polymeric phase; a mode particle size of 2-20 μm; a coefficient of variance of ≥20% compared to the mode particle size; and a porosity of 20%-75%. The discrete pores have an average pore size “d” (nm) defined by 0.3≤d / A≤0.8 wherein λ is 400-3,000 nm. Each of the discrete pores is filled with air and optionally a pore stabilizing hydrocolloid that is disposed at the interface of the discrete pore and the continuous polymeric phase. The system includes a means for introducing the porous particles into the earth's atmosphere.

The invention discloses a lifting body duct and a high-altitude power generation device comprising the same, the lifting body duct comprises a duct body, the duct body is a revolving body, the section contour of the duct body is defined by four curves L1, L2, L3 and L4, the revolving axis of the duct body coincides with a straight line y = 0, the curve L1 and the curve L2 are elliptic curves, and the curve L2 and the curve L3 are elliptic curves. The curve L3 and the curve L4 are represented by a Bezier curve, by applying the high-altitude power generation device comprising the lifting body duct, the stability of the high-altitude power generation device can be effectively improved, and the length of a mooring assembly of the high-altitude power generation device is reduced.

The invention discloses a wind speed sensor and a preparation method, and the wind speed sensor comprises a flexible feather substrate which is a feather sheet without a feather shaft; the conductive layer is formed on the surface of the feather substrate; a conductive path formed on the surface of the conductive layer; and the lead structure is arranged at the end part of the feather substrate and is used for connecting the conductive path and an external circuit. According to the wind speed sensor and the preparation method provided by the invention, stable, accurate and rapid in-situ measurement of the wind speed can be realized in an extreme environment of a high-altitude stratosphere.

The invention discloses a transition prediction method considering a wall surface heating and cooling effect, which is used for carrying out targeted correction on a simplified stability foundation transition model and expanding the application range of the model to considering the influence of a non-adiabatic wall effect of generalized wall surface heating and cooling. A localized momentum thickness Reynolds number expression and a transition initial momentum thickness Reynolds number expression which consider the wall surface heating and cooling effect are constructed, the two expressions are coupled into a gamma transport model, and a transition transport model which considers the wall surface heating and cooling effect is obtained after wind tunnel example verification. Therefore, transition prediction of the stratospheric high-altitude airship under the wall surface heating and cooling effect is realized. Experiments prove that the obvious upstream movement of the transition front caused by wall surface heating can be accurately reproduced, so that a steady engineering foundation is provided for aerodynamic design and optimization of a laminar flow platform considering the non-heat-insulating wall effect in the future.

The application discloses a kind of simultaneously generating 310nm and 355nm high-energy laser full solid-state ultraviolet laser, belongs to the technical field of laser.The frequency-doubled module of fundamental laser and it, intracavity sum-frequency module of optical parametric oscillator, sum-frequency module three parts, make full use of the output energy of 1064nm pulsed laser, adopt frequency conversion technology such as frequency doubling, optical parametric oscillation, sum-frequency, realize 310nm and 355nm ultraviolet pulsed laser output.The application has the advantages of multi-wavelength, high energy, high beam quality, compact structure, and the ultraviolet band is in ozone absorption band, especially suitable for the detection of troposphere and stratosphere atmospheric ozone concentration by spaceborne laser radar.

The present invention provides a method for selecting a terahertz radiation channel for space target detection. The method calculates the atmospheric transmittance and the atmospheric background brightness temperature in the absorption band within the range of 0.1 - 10 THz according to the real-time atmospheric profile data in the observation area, and further obtains the normalized Jacobian matrix of the atmospheric background radiation brightness temperature of different pressure layers at all absorption frequencies with respect to the water vapor volume mixing ratio; the absorption frequency corresponding to the maximum value in the Jacobian matrix and with the actual height at 15 - 25 km at the bottom of the stratosphere is selected as the radiation channel. These absorption frequencies are the most sensitive to the temperature and water vapor changes at the height of 15 - 25 km. Moreover, the temperature at the bottom of the stratosphere is relatively low, the water vapor content is scarce and evenly distributed, which can keep the atmospheric background brightness temperature observed by the detector low and stable, suppress the volatility caused by geographical environment factors, improve the radiation contrast, and thus achieve the precise positioning of the target.

The invention relates to the technical field of atmosphere detection, and discloses a stratosphere explosive warming event prediction method based on multi-source data and a neural network, which comprises the following steps: respectively aggregating hour-by-hour weft wind and polar region temperature, acquiring a day-by-day mean value, calculating a day-by-day climate state, correcting the day-by-day mean value, and acquiring a day-by-day distance; obtaining a corresponding power signal and a thermal power signal after standardization; the dynamic signal and the thermal signal constructed by the invention eliminate annual cycle seasonality of data and systematic deviation under different climate backgrounds, data of different years are unified to a comparable reference, the characterization capability of the constructed feature data is improved, a machine learning model can concentrate on learning features directly related to SSW, and the accuracy of the SSW is improved. Therefore, the model learning efficiency and the characteristic interpretability are greatly improved, the prediction precision of the trained target prediction model is further improved, and the stratosphere explosive warming event can be found in time.

The present invention provides a space debris removal method and system. When an aerostat floats to the stratosphere, a controller controls a laser generator to continuously emit lasers multiple times, and guides each laser emission from the laser generator to a laser refractor via a laser guide tube. The controller controls a rotation mechanism to drive the laser refractor based on real-time first satellite positioning data of the aerostat and second satellite positioning data of the target space debris, adjusting the laser refraction angle of the laser refractor corresponding to each laser emission from the laser generator. The laser refractor refracts each laser emission from the laser generator, thereby changing the orbit of the target space debris through the refracted laser light, thereby lowering the perigee altitude of the target space debris and achieving its removal. The present invention can alleviate problems existing in existing laser space debris removal technologies.