Research on variable rate PCM/FM telemetry modulation and demodulation technology

PCM/FM is a kind of system used in telemetry. In order to meet the needs of the future high-speed telemetry program, this paper studies the design of the 10K to 10M rate universal telemetry system. As the digital technology is more stable and flexible than the analog technology, this paper uses the full digital frequency synthesis technology to achieve PCM/FM modulation. In the digital implementation of PCM/FM modulation and demodulation, the software algorithm uses MATLAB language to simulate and verify, and combined with the hardware debugging results to prove that the system meets the requirements.