Table 6.

The cross-correlation results between different spatial signals.

DOA (${}^{\circ }$)	−50	−30	0	20	50
−50	∼	×	×	×	×
−30	×	∼	×	×	✓
0	×	×	∼	×	×
20	×	×	×	∼	×
50	×	✓	×	×	∼

✓ denotes correlation peak exists; × denotes there is no correlation peak; ∼ denotes cross-correlation is not performed.