a Matlab package for phased array beam shape inspection

60 A FIGURES TO CHAPTERS 2–7
12×4 1.4×1.4 φ 0
=0.0° θ 0
=35.0° R = 360.0 km Wv = 23.3 km (3.70°)
60
|AF| 2
40
V offset (km)
20
0
−20
−40
0.02
0.02
0.1
0.5
0.02
0.02
0.1
0.02
−60
−50 0 50
H offset (km)
Figure 28:
TA: Receiver beam perpendicular cross section through the center of the
common volume, at 300 km altitude above the VHF antenna, at the distance
of 360 km from the test array. Beam elevation is 55 ◦ . The half-power beam
width (red line) is 3.70 ◦ .
12×4 1.4×1.4 φ 0
=0.0° θ 0
=20.0° R = 635.0 km Wv = 35.7 km (3.23°)
|AF| 2
60
0.02
V offset (km)
40
20
0
−20
−40
−60
0.02
0.1
0.02
0.5
0.02
0.02
0.1
0.5
0.1 0.1
0.02
0.02
0.5
0.02
0.02
−50 0 50
H offset (km)
Figure 29: TA: Receiver beam perpendicular cross section through the center of a common
volume at 600 km altitude. The beam elevation is 70 ◦ , and the range
to the center of the common volume is 635 km. Beam elevation is 70 ◦ . The
half-power beam width (red line) is 3.23 ◦ .