7 results about "Albedo" patented technology

This invention relates to the field of solar photovoltaic power generation technology and discloses an adaptive angle adjustment method for solar cell modules, comprising the following steps: acquiring average wind speed and original pitch angle signals; performing frequency domain decoupling on the original pitch angle signals; calculating the high-frequency energy integral, low-frequency energy integral, and energy ratio parameter; calculating the actual diffuse reflectance by combining the average wind speed and the high-frequency energy integral; constructing a theoretical radiation model to obtain the optimal target tilt angle; extracting the radiation sensitivity gradient; calculating the tracking error between the actual tilt angle and the optimal target tilt angle; determining the actual dead zone by combining the energy ratio parameter and the radiation sensitivity gradient; and outputting control commands or drive commands based on the relationship between the absolute value of the error, the actual dead zone, and the high and low frequency energy integrals. This invention reduces mechanical wear by dynamically filtering out high-frequency wave disturbances through a dead zone and precisely optimizes the reflectance using high-frequency energy correction to improve power generation, achieving a balance between mechanical loss reduction and power generation benefits.

The present application relates to a kind of earth and atmospheric scattering characteristic simulation measurement system, it is related to the field of measurement system, including support, radiation source simulation system and mobile platform, radiation source simulation system is erected on support, support is erected on mobile platform;Radiation source simulation system includes light source simulation system and cold background simulation system, light source simulation system provides visible light irradiation, cold background simulation system provides uniform cold background simulation, light source simulation system and cold background simulation system are integrally designed as flat array structure to have simulation uniformity and heat dissipation efficiency, the present application has the whole design of modularization, integration, mobility, realizes the quantitative simulation of earth albedo, atmospheric scattering and cold background, simultaneously, it is combined with accurate motion control and intelligent power control, constructs a set of the advantages of optical measurement background simulation system of adaptation multi-scene.

The utility model discloses a kind of water-leaving albedo in-situ measuring devices, including triangular support, floating assembly and measuring assembly;The floating assembly includes first float ball, second float ball and floating ring;The measuring assembly includes downlink irradiance probe, radiance probe and uplink irradiance probe;The downlink irradiance probe is fixed on the end of the intersection of the leg of triangular support, for measuring downlink irradiance E d ;Radiance probe is fixed on the end below the intersection of the leg of triangular support;Radiance probe lower end is fixed with first light shield cone;The triangular support of floating ring one end is fixed with uplink irradiance probe;The uplink irradiance probe lower end is fixed with second light shield cone;The bottom of first light shield cone and second light shield cone is immersed in water body;Radiance probe and uplink irradiance probe are located above water surface respectively, and water-leaving radiance L w And water-leaving irradiance E w It is directly measured by radiance probe and uplink irradiance probe respectively.

The application discloses a time-varying glacier degree-day factor calculation method suitable for plateau areas, and the method comprises the following steps: step 1, multi-source data collection and processing; step 2, key driving factor screening; step 3, dynamic relationship model establishment; and step 4, time-varying glacier degree-day factor calculation. The method couples albedo and solar radiation, establishes the physical connection between the degree-day factor and the net radiation, realizes the dynamic calculation of the glacier degree-day factor, significantly improves the precision of glacier ablation simulation and prediction, effectively solves the applicability problem in the complex underlying surface area, reduces the data acquisition threshold and cost of large-scale application, and provides more accurate data support for water resource management and disaster warning.

The application discloses a spacecraft-oriented radiator design method and system, and belongs to the technical field of spacecraft thermal control. In order to solve the problems of non-uniform area and aperture, inaccurate extreme condition identification and lack of cross-validation in the prior art, the method comprises the following steps: obtaining an orbit and a radiator parameter; calculating an orbit position, a solar vector and an eclipse; independently calculating five types of external heat flow sub-items of a solar direct radiation, an earth albedo, an earth infrared, a deep space radiation and an earth radiation on a front surface and a back surface of the radiator, and summing up to obtain a total net heat flow density; according to a solving mode, a first mode of inversely solving a radiator area with a fixed temperature constraint is executed, or a second mode of inversely solving a balance temperature with a fixed area is executed; and finally, energy closure diagnosis and sub-item conservation checking are performed. Through double-sided sub-item modeling, reciprocal solving and three-stage extreme condition searching, the application realizes the improvement of design accuracy, the reduction of calculation cost and the quantitative evaluation of model self-consistency, and is suitable for the thermal control design of various low earth orbit spacecrafts.

The application relates to the technical field of cryosphere science, and provides a near-surface icing risk dynamic evaluation method for complex mountainous areas, which comprises the following steps: introducing a radiation terrain factor, a snow albedo suppression mechanism and a wind cooling correction for a gridded meteorological and surface temperature input field, and constructing an energy index; obtaining a humidity index by comprehensively considering precipitation, snowmelt, humidity and humidity degree and other elements; and introducing a persistence background index of an annual / seasonal scale as a background enhancement factor, so as to comprehensively consider the energy index, the humidity index, the background enhancement factor and an icing phase indicator, and obtain a corresponding icing risk score. In this way, a systematic process framework from data preprocessing, physical mechanism diagnosis, hydrological process constraint to risk comprehensive evaluation can be provided, so that the near-surface icing risk of the complex mountainous area can be efficiently and accurately evaluated.

The present application relates to the technical field of glacier information processing, and more particularly to a glacier moraine identification method based on multi-source remote sensing parameters, which comprises the following steps: performing radiation-atmosphere joint correction and geometric-reprojection on optical, thermal infrared, synthetic aperture radar and digital elevation data to generate physically consistent data; using a cross-modal visual conversion network and a symmetric neural operator to infer the ground surface temperature under the driving of shortwave albedo, downward radiation and turbulent flux, and obtaining the thickness-presence posterior through normalization flow; constructing an uncertainty field according to information entropy and variance, selecting representative pixel unmanned aerial radar samples by means of quantum annealing, fine-tuning the model through value backflow, and then diffusing the anisotropic graph to output the spatial continuous thickness field. The present application integrates daily weather forecasts to integrate future thickness according to the law of conservation of mass, and couples with the existence index to form a breaching risk grid, thereby realizing high-precision and iterative glacial moraine dam warning.