Channel estimation method of low earth orbit satellite system based on improved GOMP

The invention belongs to the technical field of low earth orbit satellite communication, and particularly relates to a channel estimation method of a low earth orbit satellite system based on improved GOMP, which comprises the following steps: transmitting a transmitting signal of a low earth orbit satellite by using a channel, receiving the signal by a receiving end, and performing channel estimation by using a GOMP channel estimation method based on a generalized Jaccard coefficient and an SWOMP algorithm according to the received signal, obtaining a channel estimation result; according to the method, better selection of atoms is realized by utilizing a similarity criterion based on a generalized Jaccard coefficient, so that the reconstruction precision of signals is improved; according to the method, the weak selection thought of the SWOMP is introduced into the GOMP, and the iteration stop condition of the algorithm is reset, so that the support set can be constructed by adaptively selecting proper atoms