Abstract: A real-time radiometric correction method and an apparatus for spectral reflectance are provided. The method includes: obtaining photosynthetically active irradiance measured by a photosynthetically active radiation sensor, where the photosynthetically active radiation sensor includes a cosine corrector; obtaining photosynthetically active irradiance of a target band based on a proportional relationship between the photosynthetically active irradiance and downwelling solar irradiance within a same wavelength range, where the target band is any band in a spectral band obtained by an imaging hyperspectral sensor, and an imaging time point of the imaging hyperspectral sensor is synchronized with a measurement time point of the photosynthetically active radiation sensor; and performing weighted adjustment on the photosynthetically active irradiance of the target band to obtain corrected target irradiance of the target band.

Abstract: A real-time radiometric correction method and an apparatus for spectral reflectance are provided. The method includes: obtaining photosynthetically active irradiance measured by a photosynthetically active radiation sensor, where the photosynthetically active radiation sensor includes a cosine corrector; obtaining photosynthetically active irradiance of a target band based on a proportional relationship between the photosynthetically active irradiance and downwelling solar irradiance within a same wavelength range, where the target band is any band in a spectral band obtained by an imaging hyperspectral sensor, and an imaging time point of the imaging hyperspectral sensor is synchronized with a measurement time point of the photosynthetically active radiation sensor; and performing weighted adjustment on the photosynthetically active irradiance of the target band to obtain corrected target irradiance of the target band.

Abstract: An electroplated steel wire segment-combined grinding wheel includes a base component for connecting an external device, and steel wire segments, wherein the steel wire segments are combined and assembled on the base component in a ring, and outer walls of the steel wire segments are plated with diamonds to form a grinding surface. The steel wire segments are combined and assembled mechanically on a support base, wherein the support base is a reusable tool, and replacing the grinding surface combined by the steel wire segments is convenient for reducing a renovation cost of the electroplated steel wire segment-combined grinding wheel. For the electroplated steel wire segment-combined grinding wheel, drainage channels are naturally formed between the steel wire segments and segment arcs, and thus, internally cooled type cooling and rapid chip removal are facilitated.

Abstract: This application provides an image fusion method, a hyperspectral lidar sensor, and a hyperspectral lidar system. The method includes: calibrating time of a laser scanner, a spectrometer, and an inertial measurement unit (IMU) based on time of an atomic clock of a global positioning system (GPS); controlling the laser scanner to perform scanning imaging on a detection area to obtain a three-dimensional (3D) point cloud image, and controlling the laser scanner to trigger the spectrometer to perform spectral imaging on the detection area to obtain a hyperspectral image; controlling the GPS and the IMU to perform signal collection to obtain a GPS signal and an IMU signal; and sending the 3D point cloud image, the hyperspectral image, the GPS signal, and the IMU signal to an image processing device, which fuses the 3D point cloud image and the hyperspectral image based on the GPS signal and the IMU signal.

Abstract: This application provides an image fusion method, a hyperspectral lidar sensor, and a hyperspectral lidar system. The method includes: calibrating time of a laser scanner, a spectrometer, and an inertial measurement unit (IMU) based on time of an atomic clock of a global positioning system (GPS); controlling the laser scanner to perform scanning imaging on a detection area to obtain a three-dimensional (3D) point cloud image, and controlling the laser scanner to trigger the spectrometer to perform spectral imaging on the detection area to obtain a hyperspectral image; controlling the GPS and the IMU to perform signal collection to obtain a GPS signal and an IMU signal; and sending the 3D point cloud image, the hyperspectral image, the GPS signal, and the IMU signal to an image processing device, which fuses the 3D point cloud image and the hyperspectral image based on the GPS signal and the IMU signal.

Abstract: A high-rotational speed cup-shaped grinding wheel includes an annular base, several blades and a flow splitting structure. The blades are fixed on a side of the base at an interval in a circumferential direction to form a blade ring. The side of the blade ring away from the base forms an annular working surface, and two adjacent blades are spaced apart from each other to form a water passage channel for delivering cooling water to the working surface. The flow splitting structure is fixed on the blade ring and splits the cooling water into two branches, where a first branch delivers the cooling water to an outer area of the working surface, and a second branch delivers the cooling water to an inner area of the working surface, and then delivers the cooling water from an inner area of the working surface to an outer side area thereof.

Abstract: A cooling structure of a high-speed cup-shaped wheel includes a base and a blade ring. The blade ring is arranged on the base and is fixedly connected to the base. The blade ring is provided with a plurality of water channel groups, which is sequentially arranged at intervals in a circumferential direction of the blade ring. Each of the water channel groups includes two or more inner water channels, which are sequentially arranged at intervals in the circumferential direction of the blade ring, and the width of each of the two or more inner water channels in a radial direction of the blade ring is gradually increased. The cooling structure allows cooling water to cover the entire working surface to improve the cooling efficiency for the working surface and also to effectively improve the utilization efficiency of the cooling water.

Abstract: A high-rotational speed cup-shaped grinding wheel includes an annular base, several blades and a flow splitting structure. The blades are fixed on a side of the base at an interval in a circumferential direction to form a blade ring. The side of the blade ring away from the base forms an annular working surface, and two adjacent blades are spaced apart from each other to form a water passage channel for delivering cooling water to the working surface. The flow splitting structure is fixed on the blade ring and splits the cooling water into two branches, where a first branch delivers the cooling water to an outer area of the working surface, and a second branch delivers the cooling water to an inner area of the working surface, and then delivers the cooling water from an inner area of the working surface to an outer side area thereof.

Abstract: An electroplated steel wire segment-combined grinding wheel includes a base component for connecting an external device, and steel wire segments, wherein the steel wire segments are combined and assembled on the base component in a ring, and outer walls of the steel wire segments are plated with diamonds to form a grinding surface. The steel wire segments are combined and assembled mechanically on a support base, wherein the support base is a reusable tool, and replacing the grinding surface combined by the steel wire segments is convenient for reducing a renovation cost of the electroplated steel wire segment-combined grinding wheel. For the electroplated steel wire segment-combined grinding wheel, drainage channels are naturally formed between the steel wire segments and segment arcs, and thus, internally cooled type cooling and rapid chip removal are facilitated.

Abstract: A tool-cooling mechanism includes a grinding tool. The grinding tool is provided with a converging disc, and the converging disc rotates with the grinding tool to draw external cooling water into the grinding tool for convergence, and then radially conveys the cooling water as converged toward an inner wall of the grinding tool, such that the cooling water can flow to a grinding surface along the inner wall of the grinding tool. The cooling water is allowed to enter via a water inlet and cool the grinding surface smoothly even when the grinding tool is rotating at a high speed, such that the cooling water can be prevented from passing through the grinding tool axially and failing to cool the grinding surface. In addition, the grinding surface is cooled after the cooling water as dispersed and atomized by the rotation of the grinding tool is converged.

Abstract: Embodiments of the present disclosure provide methods and devices for providing object coordinating information. The method comprises: submitting an object coordinating request to a server, receiving an object coordinating scheme returned by the server. The object coordinating scheme comprises data object information for a plurality of data objects. The plurality of data objects include a first data object that is a primary coordinating object and at least one second data object configured to coordinate with the first data object. The method can also include displaying the object coordinating scheme.