Covariance spectroscopy with a non-uniform and consecutive acquisition scheme for signal enhancement of the NMR experiments

► Compared with UCA-FT2D, NUCA-COV2D achieves better resolution and saves considerable experimental time. ► Compared with NUCA-FT2D, NUCA-COV2D achieves better S/N and resolution and saves considerable experimental time. ► Compared with UCA-COV2D, NUCA-COV2D increases the signal-to-noise ratio (S/N) by a factor of 2.