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.