Adaptive coding and decoding method under plasma sheath based on channel feedback

The invention discloses an adaptive coding and decoding method under plasma sheath based on channel feedback and mainly solves the problem that in an existing communication mode, under the condition that a dynamic plasma sheath has depth attenuation influences on signals, the reliable transmission of important information cannot be realized. The realization scheme comprises the steps that 1, a transmitting antenna standing wave ratio of an aircraft is taken as channel feedback quantity and a corresponding relationship between the standing wave ratios and channel communication quality is established; 2, on the basis of the advantages of fountain code unidirectional link communication, classified coding is carried out on to-be-transmitted information in an LT coding mode of a fountain code according to a windowing rule distribution function, and the information classification number, the windowing rule distribution function and a coding packet length are adjusted in real time according to the channel communicat