Broadband interference suppression method and device based on multi-satellite cooperation

The invention discloses a broadband interference suppression method and device based on multi-satellite cooperation, and belongs to the technical field of satellite communication. The device comprises an independent decoding module, an LLR information selection module, a phase adjustment module, a decoding auxiliary weight coefficient estimation module, a merging module and a merging decoding module. According to the method, the spatial irrelevance of channels among multiple satellites, a terminal and a jammer is utilized, signals are received through cooperative processing and merging, maximum-ratio merging is carried out based on the signal to interference plus noise ratio, and the proportion of expected signals in merged signals is increased while interference is suppressed by adjusting the merging weight. In the iteration process, the code assistance technology is used for assisting in obtaining estimation results of the phase offset value and the weight coefficient value, the influence of interference on