Compensation of Range Migration for Cyclically Repetitive Doppler-Sensitive Waveform (OFDM)

Range migration, which occurs for targets with high velocity when the radar range resolution is high, is solved by exploiting the cyclically repetitive waveform-namely, orthogonal frequency division multiplexing. The proposed technique is based on a signal processing method that solves the Doppler ambiguity by exploiting the Doppler sensitivity of the multicarrier spread spectrum structure. The new method extends the availability of narrowband delay-Doppler processing to a wider range of waveform and target parameters.