In this paper, a novel radar signaling

scheme designated as matched FSWPSK signaling is

introduced. An overall radar system which

implements matched FSK/PSK signaling along with

the appropriate processing scheme is given. Radars

of this type are shown to be capable of generating

FSK/PSK signals optimally matched to any arbitrary

target response. The radar signals consist of bursts

of pulses, whose frequencies are chosen by a random

selection process with a probability density function

based on the radar target’s spectral content, and

whose phases are a pseudo-random spreading

sequence. The capability of the radar to match its

illumination to a target could prove to be vital in

tracking low observable targets. Additionally, the

spectral agility of the matched FSWPSK system

allows for spectrally adaptive signaling. Adaptive

signaling could not only aid target tracking, but also

provide information about the target that could