Method for calculating earliest time of Beidou medium earth orbit satellite graveyard orbit to cross orbits of other global satellite navigation systems

Abstract

The invention provides a method for calculating the earliest time of a Beidou medium earth orbit satellite graveyard orbit to cross orbits of other global satellite navigation systems. The method comprises the following steps: respectively calculating a threshold value of an eccentricity when the Beidou medium earth orbit satellite graveyard orbit crosses the orbits of other global satellite navigation systems according to the altitude of the Beidou medium earth orbit satellite graveyard orbit, the altitude of a GLONASS satellite, the altitude of a GPS satellite and the altitude of a Galileo satellite; performing a long-term evolution on the Beidou medium earth orbit satellite graveyard orbit to obtain an eccentricity after evolution based on an orbit long-term evolution model; and recording a time at which the eccentricity after evolution reaches the threshold value of the eccentricity when the Beidou medium earth orbit satellite graveyard orbit crosses the orbits of other global satellite navigation systems, wherein the time is the earliest time of the Beidou medium earth orbit satellite graveyard orbit to cross the orbits of other global satellite navigation systems. By adoptingthe method, a reference can be provided for the safety analysis of the long-term evolution of a medium earth orbit navigation satellite graveyard orbit.

Description

technical field [0001] The invention belongs to the technical field of on-orbit safety of medium-earth-orbit navigation satellites, and in particular relates to a method for calculating the earliest time when the tomb orbit of a Beidou medium-orbit satellite crosses the orbits of other global satellite navigation systems. Background technique [0002] GNSS is a complex system based on satellite navigation and positioning technology, which can provide users with position, speed and time information for any place on the earth's surface or near-Earth space. GNSS is not only the infrastructure of national security and economy, but also The important symbols that reflect the status of a space power and the country's comprehensive national strength mainly include GPS in the United States, Galileo in Europe, and GLONASS in Russia. These navigation constellation satellites are mainly distributed in the medium earth orbit region. [0003] At present, there is no clear principle for ...

AI Technical Summary

Problems solved by technology

[0005] At present, the research on the long-term evolution of the gravel orbit of the mid-orbit navigation satellite has not yet involved a specific calculation method for the transit time. In order to better analyze the impact of the long-term evolution of the mid-orbit mid-orbit gravel orbit of the Beidou on the safety of other global satellite navigation systems, the present invention proposes a Method for calculating the earliest time when the graveyard orbit of the Beidou medium-orbit satellite crosses the orbits of other global satellite navigation systems

Images