Analysis of multi-tone signal for radar application

Waveform design plays a significant role in the design of radar systems. Multifrequency complementary phase-coded radar signals, because of their prominent properties have been of interest of many researchers. But the large variations of amplitude due to multicarrier make it susceptible to system nonlinearities. The multifrequency radar signal uses P subcarriers simultaneously. Each subcarriers are phase modulated by P completely different sequences that represent a complementary set. The subcarriers are separated by the inverse of the duration of a phase element, producing orthogonal frequency division multiplexing (OFDM) signal. This paper compares various phase coding and its effects on PMEPR and auto correlation sidelobes.