Satellite downlink data compression method and device

The invention relates to a satellite downlink data compression method and device. The method comprises steps of: obtaining satellite downlink data, wherein the satellite downlink data comprises multiple data rows, the data rows comprise downlink parameters and acquisition time of the downlink parameters, and the multiple data rows are arranged according to the acquisition time; when the downlink parameters of three continuous data lines in the satellite downlink data are the same, removing the second data line in the three continuous data lines from the satellite downlink data; and generating satellite downlink compressed data according to the removed satellite downlink data. According to the technical scheme, on the premise of ensuring that the data volume of the satellite downlink compressed data is relatively small, the change rule and the change trend of the downlink parameters in the satellite downlink data can be directly determined according to the satellite downlink compressed data without decompressi