Study on Time Frequency Transformation Processing Of Stepped-Frequency Radar and Its application

Stepped-frequency radar has the ability of high range resolution (HRR). It traditionally adopts frequency-time transformation (IDFT) processing to get the range profile (RP) of targets. Alternatively stepped-frequency radar can also use time-frequency transformation (DFT) processing, with which it is regarded as a kind of pulsed Doppler (PD) radars that uses stepped frequency pulses. This paper analyzes the DFT processing of stepped frequency radars, and its application under HPRF mode. Both theoretical analysis and simulation result prove that this radar scheme can simultaneously achieve unambiguous velocity and high resolution ranging