The invention discloses a 
satellite-borne ACARS 
signal receiving and 
processing method, which aims to provide a 
processing method which is high in detection probability, high in adaptability and low in 
information transmission bandwidth requirement. The 
satellite-borne ACARS 
signal receiving and 
processing method is realized by the following technical scheme: in 
satellite load equipment, an antenna receives an ACARS 
signal from the 
space radiation, and filters and amplifies the received signal through a receiving channel; an acquisition and processing module performs AD sampling on an 
analog signal outputted by the receiving channel; a Doppler positive 
hybrid frequency, a Doppler 
zero frequency and a Doppler negative 
hybrid frequency are formed in an FPGA in parallel, digital down-conversion, filtering preprocessing, 
demodulation and duplication removal, and checking and screening are performed on three ways of down-conversion signals, and a correlation detection 
algorithm is adopted for carrying out detection, secondary 
demodulation and differential removal processing on the ACARS signal; and finally, a final 
demodulation result is formed, and ACARS 
signal interpretation, signal duplication removal and type screening are performed on the demodulation result through a signal processor, and a screened interpretation result and a demodulation result are transmitted to the ground.