Dynamic configuration method for channel resources in random access of low earth orbit satellite network

The invention provides a method for dynamically configuring channel resources in random access of a low earth orbit satellite network, which comprises the following steps that: a user service model and a network system model are constructed, and model parameters comprise an access demand, the length of an SSB broadcast period, a coverage area of satellites, the number of ROs (Reverse Orientation) and available resources of PO (Power Orientation); a deep reinforcement learning model is constructed, model parameters comprise the state, the action and the reward of the RO in one SSB broadcast period, the state comprises the coverage area of the satellite, the wave position of the RO and the like, and the action comprises the PO allocated for the RO according to the state; training a deep reinforcement learning model according to the training data to obtain a trained deep reinforcement learning model; acquiring the current state of each target RO of each low earth orbit satellite in the current SSB broadcast peri