Ephemeris determination using intersatellite ranging and ephemeris knowledge of other satellites
The present invention provides a system (200) for determining the ephemeris of a space vehicle based on distances to and ephemeris of other spacecraft. An ephemeris determining subsystem (300) obtains ephemeris data (308) for one or more reference spacecraft. Distance information (306) is obtained b...
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| creator | WEHNER JAMES W |
| description | The present invention provides a system (200) for determining the ephemeris of a space vehicle based on distances to and ephemeris of other spacecraft. An ephemeris determining subsystem (300) obtains ephemeris data (308) for one or more reference spacecraft. Distance information (306) is obtained between the space vehicle and the reference spacecraft. The spacecraft ephemeris (312) is then calculated with ephemeris determination algorithms (302) based on the ephemeris data (308) and distance information (306). Other available information, such as stored results of previous measurements and calculations, time (310), information from other on-board sensors and attitude information may be used to enhance the accuracy or decrease the complexity of the ephemeris determination. |
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An ephemeris determining subsystem (300) obtains ephemeris data (308) for one or more reference spacecraft. Distance information (306) is obtained between the space vehicle and the reference spacecraft. The spacecraft ephemeris (312) is then calculated with ephemeris determination algorithms (302) based on the ephemeris data (308) and distance information (306). 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An ephemeris determining subsystem (300) obtains ephemeris data (308) for one or more reference spacecraft. Distance information (306) is obtained between the space vehicle and the reference spacecraft. The spacecraft ephemeris (312) is then calculated with ephemeris determination algorithms (302) based on the ephemeris data (308) and distance information (306). Other available information, such as stored results of previous measurements and calculations, time (310), information from other on-board sensors and attitude information may be used to enhance the accuracy or decrease the complexity of the ephemeris determination.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING TRANSMISSION |
| title | Ephemeris determination using intersatellite ranging and ephemeris knowledge of other satellites |
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