Design and implementation of FMCW radar using the raspberry Pi single board computer

Frequency Modulated Continuous Wave (FMCW) radar measures the target's range and velocity by emitting a continuous wave, frequency modulated by a sawtooth or triangular function. With this technology, many advantages can be achieved compared to that of the pulse radar. This paper presents a complete design and implementation of a 6 GHz FMCW radar system using the Raspberry Pi single board computer as a signal processing platform. The proposed system consists of 6 GHz RF front-end architecture with analog to digital interface. To improve the linearity of generated FM chirps, a closed loop fractional-N frequency synthesizer is used along with VCO. The baseband signal is applied to a high pass filter to equalize signal before digital interface stage. Target measures like range and velocity will be extracted at the signal processing stage which implemented on Raspberry Pi single board computer.