摘要:
Azimuth compression processing is carried out by the steps of determining Doppler rate time change data a reconstructed scene from orbit data of a sattelite or aircraft, determining azimuth coordinates transformation data of an image after range compression, that is, resampling position designation data, from the Doppler rate time change data, resampling the image after range compression, in the azimuth direction using the azimuth coordinates transformation data, keeping unaltered the Doppler rate of a point image relating to the image after coordinates transformation irrespective to the position in the azimuth direction inside the scene, and thereafter using FFT.
摘要:
A communication system having a plurality of artificial satellites each having a communication unit traveling on elliptical orbits with an orbital period of 24 hours. Arguments of perigee are set to values with a predetermined allowance in a setting process of the plurality of artificial satellites.
摘要:
A transmission or communication system, wherein plural individual elliptical orbits are so defined that an individual right ascension of a north-bound node is established with a designated angle. An artificial satellite is travels on a respective ones of the plural individual elliptical orbit and a group of artificial satellites arranged on respective ones of the plural individual elliptical orbits are used so that at least one of the artificial satellites having a communication system is always viewable within a pre-defined range of operational elevational angle in a zenith direction from a service area. The group of artificial satellites are on respective orbits obtained by combining an inclination angle and an eccentricity squared of the individual elliptical orbit so that a right ascension of north-bound node is a designated angle and a time period during which respective ones of the group of artificial satellites is viewable from ground is substantially identical.
摘要:
An information providing method and apparatus in which a radio wave signal is transmitted from plural artificial satellites and received at plural receiving equipment located within a pre-defined service area, and receiving within a pre-defined range of operational elevation angle by a receiving antenna. The plural artificial satellites are viewable in turn within a pre-defined range of operational elevation angle at an arbitrary location within the pre-defined service area, and an orbit is arranged so that at least one artificial satellite is viewable. Each orbit of the plural artificial satellites is arranged on an individual orbital plane according to a designated service hour. The individual orbit is located in a range where an orbital inclination angle is 63.4 degrees or closer to Japan, and a right ascension of a north-bound node of the individual artificial satellite is separated approximately at regular intervals.
摘要:
A communication system, wherein plural elliptical orbits in which an apogee is located on a specified service area are so defined that an individual right ascension of north-bound node may be established with a designated angle. A satellite is made to travel on an individual elliptical orbit and a group of satellites to be arranged on said elliptical orbits are used so that at least one of artificial satellites having a communication system may be always viewable within a pre-defined range of ascending vertical angle in a zenith direction from the service area.
摘要:
A toy carrier vehicle having a cargo portion sufficiently large to accommodate a powered toy vehicle of the type having a spring motor which is wound by rolling the toy vehicle across a level surface. Openings are provided above the drive wheels of the carrier vehicle to allow contact with the drive wheels of the powered vehicle contained therein. Cargo depression members are provided on the carrier vehicle to force the enclosed powered vehicle against the drive wheels of the carrier vehicle as the latter is rolled across a level surface. Upon completion of the winding operation the enclosed powered vehicle can be retained within the cargo portion to power the carrier vehicle, or it can be released for independent travel.
摘要:
A communication terminal for communicating through an artificial satellite, wherein the artificial satellite is placed into an orbit in which an individual satellite orbits on an elliptical orbit so that at least one of the artificial satellites is always viewable within a pre-defined range of operational elevational angle in a zenith direction from a service area. A group of the artificial satellites are satellites on respective orbits obtained by combining an inclination angle and an eccentricity squared of said elliptical orbit so that a time period during which an artificial satellite is viewable from ground is substantially identical and the communication terminal has a transmitter and receiver for transmitting and receiving a signal through the group of artificial satellites.
摘要:
A continuous racing game consisting of a trackway provided with separate paths along which vehicles race, a propulsion system having pluralities of resilient spokes associated with each of the paths, each of the pluralities of spokes being mounted for rotation and having a series of spokes radially oriented such that the ends of the spokes extend into the paths, and a mechanism for moving each of the pluralities of spokes closer to the surface of the trackway in response to a remote control signal generated by a bellows-like mechanism.
摘要:
A toy race type game employing magnetic coupling can be constructed utilizing a non-ferromagnetic support serving to hold one or more bodies serving as game elements in such a manner that such bodies may be moved relative to the upper surface of the support. A drive means is provided for moving an actuator carrying a holder beneath such support in such a manner that the holder is moved adjacent to the lower surface of the support. Magnetic members are provided on the body and the holder for magnetically coupling the bodies to the holder so that these bodies are moved relative to the surface of the support as the drive means are actuated. The actuator used comprises an endless, flexible belt which is located beneath the support and which is held so that along part of its length it is capable of flexing so as to follow a non-uniform path as the drive means is operated. Preferably the holder consists of a rotatable disk mounted on the belt. Internal track means may be provided so as to periodically engage the periphery of the disk as the belt is moved so as to cause the disk to rotate. Such rotation causes a variation in the location and movement of the bodies and the support as a result of the magnetic coupling.
摘要:
A communication line not affected by artificial structures and plants is established between mobile objects and stationary stations surrounded with skyscrapers, and economical artificial satellite service capable of efficiently performing satellite broadcast, mobile satellite communication, satellite-to-satellite communication and earth surveillance is provided using the communication line and by constructing the system with a small number of satellites. Six orbital elements 7-12 of a plurality of artificial satellites at reference time 5 are determined, and a plurality of elliptical orbits corresponding to the determined six orbital elements are combined, and then each of the satellites is appropriately arranged on each of the orbits to form a group of artificial satellites. Satellite communication or satellite broadcast is performed using the group of artificial satellites.