Inter-satellite networking communication method for small satellite cluster

Abstract

The invention provides an inter-satellite networking communication method for a small satellite cluster. The method comprises the following steps that: (1) a center node and an ordinary node are set; (2) a physical channel is divided into a networking channel and a data channel, and each satellite node shares the physical channel through a CSMA / CA mode of an IEEE802.11 protocol; (3) the center node sends a networking beacon frame by using the networking channel, the ordinary node carries out monitoring, and after the reception, a request association frame is sent to the center node if the access to a network is decided; (4) after the center node receives the request association frame, whether the access of an ordinary node into the network is allowed or not is judged according to the identity verification and network capacity information, the corresponding association application feedback information is sent to the ordinary node, after the networking is completed, each ordinary node employs a roll polling mode to carry out measurement and control data communication under the control of the center node, and after the measurement and control data communication is completed, each ordinary node employs a CSMA / CA protocol of IEEE802.11 to carry out data communication.

Description

technical field [0001] The present invention relates to a method for networking communication which is suitable for application scenarios such as star cluster and formation flight composed of small satellites. Background technique [0002] It is one of the future development trends of small satellites that small satellites form a formation or cluster of small satellites to work together. In order to complete tasks cooperatively, each satellite node that forms a formation or cluster needs to have the ability to communicate with each other. [0003] In the past, inter-satellite communication was mainly point-to-point single inter-satellite link communication. With the increase in the scale of star clusters and formations (when the number of nodes is greater than 3), single point-to-point communication can no longer meet its communication needs. In order to realize the communication between the formation and any satellite node in the star cluster, it is necessary to establish ...

AI Technical Summary

Problems solved by technology

[0003] In the past, inter-satellite communication was mainly point-to-point single inter-satellite link communication. As the scale of star clusters and formations increased (when the number of nodes was greater than 3), single point-to-point communication could no longer meet its communication needs.

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