Real-time Doppler analysis of radar signals

Pulse Doppler radar Fourier analysis usually requires bulky and complex circuits to obtain a real-time implementation. The letter suggests the feasibility of a spectral analyser by means of commercial programmable gate array devices (PGAs) using Curtis and Wickenden´s prime radix recursive algorithm transform´ (PRAT). PRAT leads to simple and regular networks, which can be easily fitted in the proposed devices and then transferred to gate arrays.