CP based OFDM Radar Range Reconstruction under the Background of Fragmented Spectrum (Poster)

In this paper, considering the limitation of spectrum resource scarcity to the classical CP-OFDM method in the radar applications, a range reconstruction model based on CP-OFDM is investigated on the background of fragmented spectrum. To match the bandwidth of available fragmented spectrums, original OFDM subcarriers are arbitrarily divided into several resource blocks (RB) and modulated into the desired frequency sub-bands firstly. Then, a sufficient cyclic prefix (CP) is added to each resource block OFDM pulse to guarantee the inter-range-cell interference (IRCI) free in our constructed transceiver signal model. Besides, a range compression algorithm is presented, acquiring nearly zero sidelobes in the range profile. Analysis about the point spread function with zero doppler of RB-CP-OFDM and simulation results about the range reconstruction show that the proposed method can provide satisfactory performances.