Приклади вживання Ephemeris Англійська мовою та їх переклад на Українською
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Ephemeris Time.
Inter-branch workshop"Informational and ephemeris support of space projects";
The Ephemeris data comes in 3 packets.
This may be due to imprecision in the ephemeris data used by JPL Horizons;
However, the ephemeris data requires 18 to 36 seconds before it is received, due to the low data transmission rate.
The second and the third subframes contain the ephemeris- the precise orbit for the satellite.
Ephemeris errors: Ephemeris errors occur when the satellite doesn't correctly transmit its exact position in orbit.
To account for such changes, an ephemeris time scale was created- an ideally uniform time scale.
GPS signal contains threepieces of information that is pseudorandom code, ephemeris data and almanac data.
There are ephemeris that do not go unnoticed.
That value agreed to 1 part in 1010 with the astronomical(ephemeris) second then in use.
If the signal from a satellite is lost while its ephemeris data is being acquired, the receiver must discard that data and start again.
A GPS signal contains three different bits of information?a pseudorandom code, ephemeris data and almanac data.
The ephemeris is updated every 2 hours and is generally valid for 4 hours, with provisions for updates every 6 hours or longer in non-nominal conditions.
A GPS signal contains three differentbits of information a pseudo random code, ephemeris data and almanac data.
Whereas ephemeris information is highly detailed and considered valid for no more than 30 minutes, almanac information is more general and is considered valid for weeks.
A GPS satellite signal contains three different kinds of information:a pseudorandom code, ephemeris data and almanac data.
Whereas ephemeris information is highly detailed and considered valid for no more than four hours, almanac information is more general and is considered valid for up to 180 days.
A position fix using any satellite can not be calculated until the receiver has an accurate andcomplete copy of that satellite's ephemeris data.
Perfect so that it is impossible to reproduce the ephemeris second as a standard- because it is tied to the duration of the"tropical year in the fundamental era of 1900, January 0, 12 hours.
The almanac assists the receiver in determining which satellites to search for, and once the receiver picks up each satellite's signal in turn,it then downloads the ephemeris data directly from that satellite.
When Neptune's newly determined mass wasused in the Jet Propulsion Laboratory Developmental Ephemeris(JPL DE), the supposed discrepancies in the Uranian orbit, and with them the need for a Planet X, vanished.
The time needed to acquire the ephemeris is becoming a significant element of the delay to first position fix, because as the hardware becomes more capable, the time to lock onto the satellite signals shrinks;
The first is to assist in the acquisition of satellites at power-up by allowing the receiver to generate a list of visible satellites based on stored position andtime, while an ephemeris from each satellite is needed to compute position fixes using that satellite.
BlackJack Global PositioningSystem receiver provides precise orbit ephemeris data Laser retroreflector array works with ground stations to track the satellite and calibrate and verify altimeter measurements.
Each satellite constantly sends a message that contains information about the time of sending the message,the point in the orbit of the satellite from which the message was sent(ephemeris), and overall system status and estimate the orbits of other satellites grouping system GPS(almanac).
This may be due to imprecision in the ephemeris data used by JPL Horizons; also the JPL Horizons data gives local apparent solar time while the times reported above are probably some form of mean solar time(and therefore some of the discrepancy would be due to the Martian equivalent of the equation of time).
The time needed to acquire the ephemeris is becoming a significant element of the delay to first position fix, because as the receiver hardware becomes more capable, the time to lock onto the satellite signals shrinks; however, the ephemeris data requires 18 to 36 seconds before it is received, due to the low data transmission rate.
Celestial ephemerides in an expanding universe.