Table 1 Multidimensional parameters estimation result for three targets (SNR = 10 dB)

θ _t

10°

10.0069°

30°

29.9987°

70°

70.0012°

ϕ _t

40°

39.9739°

-60°

-59.9708°

-10°

-10.0055°

θ _r

50°

50.0054°

80°

80.0630°

20°

20.0075°

ϕ _r

10°

9.9985°

30°

29.9829°

60°

60.0041°

γ

0.1 π

0.0998 π

0.25 π

0.2493 π

0.45 π

0.4499 π

η

0.2 π

0.2003 π

0.8 π

0.7996 π

0.4 π

0.3996 π

f _d

1,000 Hz

1,000.3 Hz

3,000 Hz

2,999.8 Hz

5,000 Hz

4,999.9 Hz