It's "non-traditional radar waveform". They are referring to waveforms and modulation techniques not traditionally applied to radar signals. Radar typically h

It's "non-traditional radar waveform". They are referring to waveforms and modulation techniques not traditionally applied to radar signals. Radar typically has a very regular waveform. So regular, in fact, that a receiver can tell what type of radar is sending the signal by recording the overall signal pattern and deriving radar parameters from that (center frequencies, chirp bandwidths, scan patterns, and such). The type of obfuscation they are doing here is more typical of communications systems.