36 results about "Lunar phase" patented technology

A global time reckoning system simultaneously indicates local time and global time. The global time reckoning system can be practiced with standard clock timer drivers, including electromechanical and digital clock motors, in combination with a novel global time system clock face to allow a user to reckon time locally or anywhere on the globe without time zone conversion calculations. The global time system clock face has multiple time scales, at least one of which is driven by the clock drive in cooperation with an hour indicator (e.g., an hour hand). The global time system clock face simultaneously displays global time (relative to any location on the globe) and local time. Additionally, the global time reckoning system, with the appropriate clock timer driver is adaptable to indicate a number of other global time related information, including sunrise/sunset, days of the week, lunar phase and solstices/equinoxes.

A lunar phase display mechanism includes an upper disc which is the lunar display disc and a lower disc mounted concentrically to this disc. One of the discs is mounted so that during normal operation of the mechanism that one disc rotates relative to the other disc, and the other disc is mounted in a stationary position during normal operation of the mechanism while this position can be changed by a rotary motion. The gear train driving the rotating disc allows that the direction of rotation of this disc can be reversed so that the different appearance of the lunar phases at the latitudes of the earth and, in particular, in the northern and southern hemisphere can be taken into account in the display.

The invention discloses a lunar phase teaching model. The lunar phase teaching model comprises a sphere simulating the globe, a sphere simulating the moon, and a sphere simulating the sun and being capable of emitting lights, wherein the sphere simulating the globe can be hooded on a head of an observer, and is provided with an observation hole to enable the observer to see scene outside; or the observer can be attached to the surface of the model, and can rotate along with the rotation of the globe model; the sphere simulating the moon is non-transparent and is capable of moving around the globe model; and the light-emitting sphere simulating the sun stands still relatively, and includes a power source for controlling the sphere to emit lights, a switch, a light-emitting element and the like. The size and the distance of the three spheres are relatively consistent with the known size and distance proportion; and the movement speeds of the three spheres are relatively consistent with the known movement speed proportion of the globe and the moon. As the size, the distance and the movement speed proportion of the globe, the moon and the sun are consistent, a movement relationship of the globe, the moon and the sun can be demonstrated, the observer can be put in the scene to intuitively observe the lunar phase change process and the position relationship among the three spheres so as to understand the lunar phase change process and the causes of formation of various lunar phases.

The invention relates to a lunar center vector and sun direction extraction method based on a lunar imaging sensor, and the method employs the invariance feature of an included angle between a lunar edge contour direction and a lunar center vector direction, and the invariance feature of an included angle between a lunar phase contour point direction and a sun vector direction. The vector directions of the lunar center vector and the sun vector in the coordinate system of the lunar sensor are respectively calculated by combining with a least square method, and finally the vector directions are corrected through the theoretical calculation value of the included angle between the sun vector and the lunar vector, so that the high-precision lunar center vector and the sun direction are obtained at the same time. Compared with the prior art, the method is simple, high in precision, wide in application range and suitable for various conditions that the moon, the sun and observers are in different relative directions and relative positions, and the influence of moon phase contour fuzzification on the precision is reduced.

The invention discloses an oversampling correction method and system based on moon phase graphical functional fitting, and the method comprises the following steps: extracting the pixel length of a pre-obtained moon image in a satellite scanning direction and a satellite movement direction based on contrast or edge recognition; calculating satellite parameters and moon parameters according to theephemeris, wherein the satellite parameters and the moon parameters are respectively the scanning speed of the remote sensor along the satellite motion direction and the relative position of the moon-satellite-sun; calculating a lunar phase angle and an orbit angle based on the extracted pixel length, and constructing a theoretical lunar phase graph function for obtaining a satellite view angle; through function fitting, determining a conversion coefficient of a pre-acquired moon image and a theoretical moon phase graph function, and acquiring an oversampling coefficient; and correcting moon shape stretching caused by time sequence recombination of the moon image observed by the satellite based on the oversampling coefficient to realize oversampling correction. According to the invention,the influence of oversampling on moon radiation correction can be accurately eliminated.

A display mechanism for n moonphases for a timepiece, where n≥3, includes a first wheel and pinion having a night-time background and a portion of lunar background and a second wheel and pinion superposed on the first, the second having a night-time background and moonphase profiles, with the first and second pivoting about one axis. The first wheel and pinion is driven at a constant velocity, and that the second can be driven in rotation at the same velocity and direction as the first during a moonphase display period during which a portion of lunar background of the first and a moonphase profile of the second corresponding to the moonphase to be displayed are superposed, revealing the moonphase. The second wheel and pinion is offset from the first by a repositioning angle during a transitional period between the current and following display periods, revealing the following moonphase.

The “Weather Dial” graph was developed to illustrate in a clear and concise manner the actual and/or forecast daily meteorological and weather variations. Several weather and meteorological symbols and information, including sunrise and sunset times, morning, afternoon, evening and night weather conditions, high and low temperatures, wind conditions and lunar phases, are succinctly organized in a dial format representing the 24 hours in a day.

A lunar phase display device including an annular cover including four ring portions, two successive ring portions being separated by a convex lobe projecting radially towards the inside of the annular cover; a moon indicator disc, a drive device arranged to move the moon indicator disc so that the disc makes a cycloidal trajectory between two successive lobes, the moon indicator disc being at least partially occulted by each of the two lobes during one portion of the cycloidal trajectory so as to reproduce the phases of the moon during a lunar month.

The invention discloses a dial plate with an instant lunar phase image figure. A dial plate surface expresses an equatorial plane; and the central point of the dial plate surface expresses the location of the earth. And the location of the moon is expresses as follows: the projection of the moon on the equatorial plane is displayed on the dial plate surface at a selected distance relative to the central point in a roundness manner. The moon moves clockwise as time goes by. The lunar phase of the moon can be determined according to dates and the moon is displayed at the dial plate in a lunar phase state. Preferably, a sun mark (2) indicating the sun is arranged above the central point of the dial plate and is filled with a red color or gold color; and the central point is displayed in a blur circle mode and expresses the earth. According to the dial plate, the relative position relationship of the sun, the moon, and the earth is displayed at the small dial plate vividly; and on the basis of the displayed lunar phase figure and the position relationship of the sun, the moon, and the earth, the arrival and size of the tide can be determined accurately. Therefore, the dial plate not only can be applied to offshore catching, culturing, scientific research and military fields but also can be used for determining arrival of traditional festivals.

The invention relates to an equatorial telescope synchronization method, aims to solve the technical problems of large manpower consumption and large precision error caused by the fact that an equatorial telescope synchronization correction method in the conventional astronomical observation field adopts a manual observation and adjustment method, and provides a foundation moon-to-moon observationequatorial telescope synchronization method. The method employs a finderscope to recognize the geometry center of the moon through image processing; the equatorial telescope can be synchronized without strictly aligning a slit type spectrograph with the optical axis of the finderscope, and a minimum circumscribed circle algorithm adopted for identifying the geometry center of the moon is not influenced by the lunar phase, and the center of the lunar sphere can be accurately identified without judging the lunar phase; the equatorial telescope is synchronized through the geometry center of themoon, additional star map data is not needed, and the synchronization method is accurate, simpler and more convenient.

The invention provides a radiometric calibration method and system for a lunar remote sensor. The method comprises the steps: simulating a stationary synchronous orbit satellite, and obtaining J2000 space coordinates of the satellite and the lunar relative to the earth during the in-orbit period at a preset moment; according to J2000 space coordinates and the like, calculating a time point when a complete moon appears in the earth full-disc image; acquiring a corresponding earth full-disk image; restoring the normal proportion of the earth full-disk image; extracting a moon image through a connected domain of the infrared image and the visible light image; eliminating an earth-like image and a moon image which is seriously influenced by stray light from the moon image; according to the moon image after elimination, acquiring moon disc integral irradiance by using A/D conversion; obtaining a distance correction coefficient and a moon phase correction coefficient; and obtaining a relative radiation sequence of the synchronous orbit satellite according to the lunar disc integral irradiance, the distance correction coefficient and the lunar phase correction coefficient. A remote sensing instrument is analyzed through data of a time sequence, so that the attenuation condition of the remote sensing instrument is monitored for a long time.

The invention discloses a solar eclipse and lunar phase teaching demonstrator, which comprises a box body, an LED spherical lamp and a blocking ball, wherein a track is arranged on a bottom plate in the box body, and the blocking ball can slide in the track; the LED spherical lamp is fixedly arranged on the bottom plate of the box body, and the track in the box body is divided into a straight track and a circular arc track. The solar eclipse and lunar phase teaching demonstrator provided by the invention has a simple structure and can clearly demonstrate astronomical phenomena such as solar eclipses and lunar phases, and the demonstration process is closer to the real solar eclipses phenomenon process, so that an observer can quickly understand the generation principle of solar eclipses. The solar eclipse and lunar phase demonstrator provided by the invention can also intuitively show the astronomical phenomena such as total solar eclipse and annular solar eclipse caused by the difference in the distance between the moon and the earth.

Device for displaying phases of the moon with a fist display member (80) bearing a plurality of first images (81-86) at least partially representing the moon, a display zone, driving means (22, 23 ,25, 40. 41, 43, 63, 71, 72, 61, 62) arranged to displace, by successive jumps, the first display member (80) relative to the display zone, to display a succession of representations of the moon. An original feature of the invention is that the periods of display of the first images are not all equal.

The patent of the invention relates to a teaching instrument, in particular to a novel lunar origin demonstrator which solves the problem of no visual and visual teaching aids demonstration moon phasecauses and the original projector waste resources re-use; the instrument comprises a box body, a control switch arranged on the box body, a power socket, a heat dissipation fan arranged inside the box body, a reflecting bowl, a 300W bromine-tungsten lamp and a transformer; the original projector screw condenser can obtain parallel light by lowering the height of the condenser; heat insulation with thick glass liner under it; a movable plane mirror is arranged above the movable bracket, and the movable bracket is used for fixing the movable bracket, so that the strong light is reflected to theearth-moon model; a folding cover plate is hinged on the right side of the box body; a ground-moon model turntable is arranged on the cover plate, and is driven by a small decelerating motor on the back; and a convex lens and a small plane mirror are arranged in the space of the earth model, so that the moon phase can be imaged on the round ground glass; a video head is arranged above the groundglass, and the computer multimedia is connected with the data line, and the lifting knob is adjusted, so that the panorama of the earth-moon model or the close-up of the moon phase can be projected onthe screen.