Satellite signal capture circuit

The utility model relates to the data acquisition field, and discloses a satellite signal capture circuit; a data compressor compresses data collected by an analog-digit converter under different sampling frequency into consistent data bit width for later circuit process. The data is connected and compressed into consistent data bit width, so the later circuit only needs to deal with one data bit width, different later processing circuits designed according to different sampling rate are not needed; develop design people only need to design one later processing circuit, so circuit development consistence can be improved, and thus saving developing cost.