Constellation ephemeris on-orbit updating method
The invention discloses a constellation ephemeris on-orbit updating method, which comprises the following steps: firstly, judging whether a satellite is a satellite newly added into a network, if so, updating extrapolation multipoint ephemeris data within the time of T0 to T0 + 2T, and after GNSS po...
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Main Authors | , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
18.06.2021
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a constellation ephemeris on-orbit updating method, which comprises the following steps: firstly, judging whether a satellite is a satellite newly added into a network, if so, updating extrapolation multipoint ephemeris data within the time of T0 to T0 + 2T, and after GNSS positioning is normal, updating real-time broadcast two-point ephemeris at the time of T0 and T0 + T, where T0 is the current time and T is ephemeris extrapolation time demand; then, using a sliding updating method, and updating the ephemeris data of the two real-time broadcast points at the T0 moment and the T0 + T moment at the same time per second; and updating the extrapolated multipoint ephemeris data in the subsequent 2T moment for standby application every specified time interval.
本发明公开一种星座星历在轨更新方法,首先,判断卫星是否为新加入网络的卫星,若是,则更新T0~T0+2T时间内的外推多点星历数据,并在GNSS定位正常后,更新T0、T0+T时刻的实时广播两点星历,其中,T0为当前时刻,T为星历外推时间需求;然后,采用滑动更新方法,每秒同时更新T0、T0+T时刻的实时广播两点星历数据;以及每隔指定时间间隔,更新后续2T时刻内的外推多点星历数据作为备用。 |
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Bibliography: | Application Number: CN202110208837 |