SDR receiver management program and implementation of DSP function. Main project in 2017-2019.
- full control of the SDR receiver based on Realtek and RafaelMicro chips:
- gain control;
- ADC sampling frequency;
- frequency of the local oscillator;
- operating mode ADC;
- receiving digital signal from SDR;
- DSP:
- bandpass filtration (FIR filter);
- FFT calculation (size 1024);
- shift signal's frequency;
- decimation;
- demodulation (AM, USB, LSB, FM);
- recording signal at various stages of digital processing in wav files;
- displaying spectrum of signal on spectrogram and sonogram;
- output of low-frequency demodulated signal via computer sound card;
- suppression of imbalance of quadrature components;