Offshore operation channel access method and system based on multipath transmission

The invention discloses an offshore operation channel access method and system based on multipath transmission, and the method comprises the steps: obtaining target sea area channel information, carrying out the channel quality evaluation according to the target sea area channel information, and selecting an initial access channel through a channel evaluation result; performing channel testing on each channel according to the initial access channel information, and determining a final transmission channel; the method comprises the following steps: acquiring information to be sent, preprocessing the information to be sent, performing information distribution, information recombination and information encryption according to a transmission channel, and setting a channel modulation scheme at the same time; formulating a channel adjustment strategy, performing real-time monitoring on each channel based on an adaptive algorithm, and performing dynamic adjustment; the method comprises the following steps: acquiring