Method and apparatus for planning mission forwarding path for a mega-constellation, and non-transitory storage medium

An apparatus for planning mission forwarding path for a mega-constellation, comprising a memory and a processor, wherein

• the memory is configured for storing computer-readable instructions capable of running on the processor, and
• the processor is configured for performing the following steps by running the computer-readable instructions:
• dividing satellites of the mega-constellation into satellite topology groups, so as to construct corresponding space-time grids based on a coverage on ground of each satellite topology group;
• obtaining a dynamic matching relationship in time domain between the space-time grids and the satellite topology groups based on a trajectory path of a sub-satellite point of satellites in each satellite topology group;
• setting a path weight for each space-time grid according to constellation deployment characteristic relationships and demand indicators;
• acquiring a static grid path for forwarding a mission by searching in the space-time grids based on a shortest path algorithm according to the path weight, wherein the static grid path is determined by an order of the space-time grids that need to be passed sequentially to forward the mission;
• and
• adjusting the static grid path according to the satellite node currently receiving the mission and the dynamic matching relationship, so as to acquire the next satellite node to which the mission is forwarded from the satellite node currently receiving the mission.

A non-transitory storage medium having stored thereon computer-readable instructions that, when executed by a processor, cause the processor to perform a method for planning mission forwarding path for a mega-constellation, the method comprising:

• dividing satellites of the mega-constellation into satellite topology groups, so as to construct corresponding space-time grids based on a coverage on ground of each satellite topology group;
• obtaining a dynamic matching relationship in time domain between the space-time grids and the satellite topology groups based on a trajectory path of a sub-satellite point of satellites in each satellite topology group;
• setting a path weight for each space-time grid according to constellation deployment characteristic relationships and demand indicators;
• acquiring a static grid path for forwarding a mission by searching in the space-time grids based on a shortest path algorithm according to the path weight, wherein the static grid path is determined by an order of the space-time grids that need to be passed sequentially to forward the mission;
• and
• adjusting the static grid path according to the satellite node currently receiving the mission and the dynamic matching relationship, so as to acquire the next satellite node to which the mission is forwarded from the satellite node currently receiving the mission.