Marine environment monitoring system based on rail remaining tail sub-level cluster

The invention discloses a marine environment monitoring system based on an orbit remaining tail sub-level cluster, and the system comprises the steps: enabling a GNSS-R marine environment monitoring load to be loaded on the orbit remaining tail sub-level cluster provided with an orbit remaining control platform, receiving a direct signal of a GNSS navigation star, carrying out the digital signal processing of the direct signal, and obtaining the configuration parameters of a reflection channel; the method comprises the following steps: receiving an ocean reflection signal of a GNSS navigation star, reading configuration parameters of a reflection channel, and performing DDM mapping in a Doppler dimension and a time delay dimension by using an array correlator to obtain a two-dimensional echo DDM curved surface of the reflection signal, thereby obtaining ocean parameter information including a sea surface wind field and an ice surface height, and realizing ocean environment monitoring. According to the space-b