DOA	Direction of Arrival
Loran-C	Long-Range Navigation-C
USBL	Ultra-Short Baseline
Corr-LS	Correlation-based Least Squares
ZC-LS	Zero-Crossing-based Least Squares
TDOA	Time Difference of Arrival
MUSIC	Multiple Signal Classification
GNSS	Global Navigation Satellite System
PNT	Positioning, Navigation, and Timing
LEO	Low Earth Orbit
GPS	Global Positioning System
TOA	Time of Arrival
AoA	Angle of Arrival
GRI	Group Repetition Interval
SNR	Signal-to-Noise Ratio
RMSE	Root Mean Square Error