Earth observation satellite network minimum expenditure routing method based on space-time diagram
An earth observation and satellite network technology, applied in the field of communications, can solve problems such as inability to make decisions on space (satellite) network routing, inability to accurately describe time-varying network topology changes, and lack of time dimension information.
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[0028] specific implementation plan
[0029] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0030] Earth Observation Satellite Networks Contemplated by the Invention The main components and descriptions are as follows:
[0031] (1) Remote sensing satellite SS={ss i |i=1,...,NS}, it serves as the network source node to send the collected remote sensing image data to the ground station;
[0032] (2) Relay satellite RS={rs i |i=1,...,NR}, its role is to maximize (under the constraints of implementation cost) increase the chance of delivering remote sensing image data to the ground station, and play the role of data relay;
[0033] (3) Ground station GS={gs i |i=1,...,NG} is the network destination node, which will collect image data sent by remote sensing satellites. The total number of nodes is N=NS+NR+NG.
[0034] Assume The observation target set of is OT={ot 1 ,...,ot n ...
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