Passive intermediate frequency signal processing method for satellite-borne microwave radiometer

The invention relates to the field of space microwave remote sensing, in particular to a passive intermediate frequency signal processing method for a satellite-borne microwave radiometer, which comprises the following steps of: S1, generating a clock signal and a synchronous signal through a synchronous clock single machine; s2, an acquisition processing single machine on each antenna arm on the one-dimensional real aperture and one-dimensional synthetic aperture microwave radiometer acquires an intermediate frequency signal on the corresponding antenna arm according to the clock signal and the synchronizing signal provided in the step S1, and sends the intermediate frequency signal to a convergence processing unit after preprocessing; and S3, after the convergence processing unit receives and calculates the data transmitted by all the acquisition and processing single machines, the result is framed and sent to the central processing unit for inversion calculation. Through the distributed single-machine layo