AMC	Automatic modulation classification
AMR	Automatic modulation recognition
AWGN	Additive white Gaussian noise
BFD	Backward finite difference
BPSK	Binary phase shift keying
CFD	Central finite difference
CWD	Choi-Williams distribution
EGCT	Extended generalized chirp transform
ELINT	Electronic intelligence
ESM	Electronic support measures
EW	Electronic warfare
GNSS	Global navigation satellite system
IBER	In-bound energy ratio
IF	Instantaneous frequency
LFM	Linear frequency modulation
MIMO	Multiple-input multiple-output
MOP	Modulation on pulse
MSE	Mean squared error
NLFM	Nonlinear frequency modulation
PCFM	Polyphase-coded frequency modulation
PDW	Pulse descriptor word
PPS	Polynomial-phase signal
PWD	Pseudo-Wigner distribution
QML	Quasi-maximum likelihood method
RWR	Radar warning receiver
SPP	Stationary phase principle
STFT	Short-time Fourier transform
TBP	Time-bandwidth product
TFD	Time-frequency distribution
UMOP	Unintentional modulation on pulse
WVD	Wigner-Ville distribution