43 results about "Moonlight" patented technology

The invention discloses a method and a device for realizing the extraction of a star target under a high dynamic condition, which can both select a self-adaption window aiming at a star, judge the breaking point of the star in the selected self-adaption window, carry out active growth based on a structural element on the broken star according to the judgment result of the breaking point and carryout centroid calculation used for supporting the extraction of the star target aiming at the window finishing the active growth of the star. Because of applying the self-adaption window to carry out the extraction of the star target and utilizing an active growth method to repair the broken star, the method and the device can adapt to different motion states of a star sensor and extract the star target effectively; the method and the device can carry out effective extraction under the condition that a star image is broken, can carry out growth repair on the broken star and enhance the positioning accuracy effectively, and can effectively remove large-area noise caused by moonlight and the like.

The invention relates to the technical field of lighting devices, and discloses a lighting device for reminding offshore wind power, which includes a box body, a chute is provided on the surface of the box body, and a cleaning mechanism is provided on the inner wall of the chute body. The top of the box is fixedly connected with a filter plate, the surface of the filter plate is fixedly connected with a limiting plate, the top of the box is fixedly connected with a limiting rod, the inner wall of the box is rotatably connected with a baffle, and the inner wall of the baffle The top of the box body is fixedly connected with a wind motor body, the surface of the wind motor body is fixedly connected with a lighting lamp, and the bottom of the baffle is fixedly connected with a lever. The swing of the baffle can block the lights intermittently. At this time, the lights will light up intermittently. At this time, ships in the distance in the dark will see non-stop flashes, which is convenient for the reflection of the moonlight. Distinguish and prevent ships from colliding with wind turbines.

The invention discloses a star point segmentation method under interference of moonlight and an FPGA device of the star point segmentation method. The method comprises that the local gradient G of a star point window image under the interference of moonlight is calculated; influence of moonlight noise is eliminated via a gradient threshold; and a self-adaptive threshold is used to determine whether the central pixel gray value of a window is higher than the self-adaptive threshold, and if it is determined that a star point or part of the star point in contained in the window and the central pixel gray value of the window is higher than the self-adaptive threshold, the central pixel of the window is determined to be the star point finally. The FPGA device of the method comprises a gray degree window generation module, a local gradient module, a self-adaptive threshold module and a segmentation result processing module. All of star point segmentation is realized by the FPGA device, the power consumption is low, the device is small, system design is concise, the advantages of parallel assembly line calculation are fully played, and the requirement of instantaneity is satisfied.

The invention provides a lunar instrument for simulating the lunar balance and the moon phase change, comprising: a base; a bow-shaped support fixedly arranged on the upper surface of the base; a lunar instrument shell with a spherical cavity inside, and the lunar instrument shell is fixedly connected with the arc-shaped support The shading plate is built in the spherical cavity of the lunar instrument shell, and the plane of the shading plate is fixedly connected with a coaxial device; the Z-shaped transmission shaft is connected to the outer shaft at one end, and the other end is connected to the first drive motor through the reduction gearbox Transmission connection, the first driving motor is placed in the base; the second driving motor is placed in the spherical cavity of the lunar instrument shell, and is connected to the inner shaft by transmission; the simulated light source is fixed on the plane of the visor and placed on the base The electrical connection to the power supply inside. It can realize more accurate calculation of the display range of the moon phase on the real three-dimensional spherical surface, more intuitive and realistic display of the moon phase effect on the three-dimensional lunar instrument, and better serve the application and research of lunar science.

The present application discloses a method for extracting pure light at night, which solves the problem in the prior art that the radiance value of artificial light areas observed by satellites is affected by clouds, moonlight and atmospheric aerosols. The method includes the following steps: performing cloud removal processing on the collected images. Extract the images whose moonlight fraction and lunar zenith angle meet the threshold standard in the images after cloud removal. Extract the pixel points corresponding to the pixels whose brightness is greater than the third threshold in the image. Extracting pixel points in which the number of pixels whose luminance value is greater than the third threshold is greater than the fourth threshold. Sort all the pixels on the extracted pixel points according to the brightness, and calculate the standard deviation for every three pixels of the pixels with the largest brightness value, and take the average value of the three values ​​corresponding to the minimum standard deviation as the pixel The pure light value of the point. The method of this application observes artificial light areas at night, removes the influence of clouds, moonlight and atmospheric aerosols, and obtains pure light information.

The invention relates to a storage container for lunar soil samples realized by three-axis compression and locking with a variable inner diameter, comprising an upper sealing cover, an outer barrel, an elastic inner barrel, an inner diameter shrinking wedge, an annular linkage mechanism, an axially tightening elastic member, and an elastic inner barrel Sleeved in the outer barrel, the ring linkage mechanism is set between the elastic inner barrel and the outer barrel; the bottom wall of the outer barrel is provided with a slope, the lower end of the ring linkage mechanism is in contact with the slope and can move relative to the slope, and the upper end of the ring linkage mechanism is in contact with the inner diameter contraction wedge The wedge-shaped slope of the block is in contact with and can move relative to the shrinking wedge of the inner diameter; one end of the axially tightening elastic member is connected with the bottom wall of the outer barrel, and the other end is fixed with a slider that can seal and slide in the elastic inner barrel; the upper sealing cover is fastened On the top of the outer barrel, and by squeezing the inner diameter contraction wedge, the upper and lower ends of the ring linkage mechanism slide along the wedge-shaped slope and the slope respectively, so as to realize the radial contraction of the elastic inner barrel, and at the same time compress the axially tightening elastic member. The invention can preserve the original bedding information of lunar soil samples as much as possible.