Research Article
Effect of Surface Error Distribution and Aberration on Electromagnetic Performance of a Reflector Antenna
Table 1
The Zernike circle polynomial sequence modes, orders 1 through 5.
| | | | | | Description |
| | 1 | 0 | 0 | 1 | 1 | Piston | | 2 | 1 | -1 | | | Vertical tilt | | 3 | 1 | 1 | | | Horizontal tilt | | 4 | 2 | -2 | | | Oblique astigmatism | | 5 | 2 | 0 | | | Defocus | | 6 | 2 | 2 | | | Horizontal astigmatism | | 7 | 3 | -3 | | | Vertical trefoil | | 8 | 3 | -1 | | | Vertical coma | | 9 | 3 | 1 | | | Horizontal coma | | 10 | 3 | 3 | | | Oblique trefoil | | 11 | 4 | -4 | | | Quadrafoil | | 12 | 4 | -2 | | | Oblique 2nd-order astigmatism | | 13 | 4 | 0 | | | Primary spherical | | 14 | 4 | 2 | | | Vertical 2nd-order astigmatism | | 15 | 4 | 4 | | | Quadrafoil | | 16 | 5 | -5 | | | Pentafoil | | 17 | 5 | -3 | | | | | 18 | 5 | -1 | | | 2nd-order coma | | 19 | 5 | 1 | | | 2nd-order coma | | 20 | 5 | 3 | | | | | 21 | 5 | 5 | | | Pentafoil |
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