An Improved OFDM Chirp Waveform Scheme for GMTI in Clutter Environment

摘要

Orthogonal frequency division multiplexing (OFDM) chirp waveform is a new kind of waveform scheme that combine the OFDM principle with the linear frequency modulation (LFM) waveform. In this paper, the OFDM chirp waveform generation model is improved to the condition with arbitrary numbers of orthogonal basic signals, and the detection performance under the energy detector (ED) of this waveform in clutter environment is also analyzed. The simulation results proved that the OFDM chirp waveform performs better than the traditional OFDM and LFM waveforms in clutter environment.