Abstract
High peak-to-average power ratio (PAPR) waveforms present a challenge to
radar systems in which high power amplifiers operate in saturation to increase
power efficiency. Previous works have demonstrated a marked reduction in PAPR
by leveraging digital arrays, namely, utilizing the spatial complement of a set of
steering vectors to not interfere with RF functions. The previous work was extended
by first using waveform spectral orthogonal complements to reduce PAPR, then fur-
ther generalizing to n dimensional orthogonal subspace utilization, including using
all avaiable degrees of freedom (time, azimuth, elevation, etc.) simultaneously or
sequentially to reduce the impact in any one dimension.