3 results about "Lunar phase" patented technology

The utility model discloses an image test equipment of simulating sun and moon light condition, including the inside integral sphere with analog light source, be used for fixing and moving the mobile base of integral sphere, be located integral sphere one side's light outlet, the outside of light outlet is equipped with the box type light source simulator for providing analog ambient light, be equipped with the moon phase simulation adjusting mechanism between the box type light source simulator with light outlet, the light transmission shape of light outlet forms the moon phase conversion of different shape after adjusting through moon phase simulation adjusting mechanism. Can accurate simulation sun, moon light condition and the different form of moon phase to provide more reliable comprehensive test environment for camera detection, and more effective iteration promotes the image quality of camera under more complex weak light light environment.

The present invention provides a watch with a lunar phase display mechanism that can improve the displayability of lunar phase information and the ease of operation when making corrections. [Solution] The moon phase display watch 1 comprises a dial for displaying the time, a moon phase display mechanism 3, and a correction mechanism 5. The moon phase display mechanism 3 has a moon wheel 24 that displays the position of the moon in synchronization with the time, and a moon shadow wheel 25 that displays the moon phase based on the phase difference with the moon wheel 24. The correction mechanism 5 corrects the moon phase information, which is the display information in the moon phase display mechanism 3. The correction mechanism 5 has a first correction mechanism and a second correction mechanism 52. The first correction mechanism corrects the moon phase information in synchronization with the time when the crown is operated. The second correction mechanism 52 has a different input path from the first correction mechanism and corrects the moon phase information without synchronization with the time and more quickly than the first correction mechanism.

The present application relates to a kind of space target to space-based platform visibility fast prediction method, belong to aerospace engineering and space target monitoring technical field, including obtaining the position sequence of space target during prediction, and the ephemeris of space-based platform is combined, and the inertial system observation vector of space-based platform and space target is obtained by interpolation at observation time;After the observation vector is corrected by light time, the observation direction of space target relative to load camera line of sight is calculated by coupling space-based platform pointing quaternion;Introduce the observation direction parameter of sun and moon under the same inertial system, moon phase parameter, determine the earth shadow blocking state of space target, and when determining that space target is not blocked by earth shadow, the constraint of solar and moon avoidance angle is superimposed, and the visibility result of target is output;Efficiently realize the visibility fast prediction of space-based platform to all-space space target, provide reliable data support for space-based observation mission planning, observation data real-time processing and false alarm signal accurate rejection.