Table 6
Test result of Sun Ephemeris Generation by Chebyshev interpolation
Interpolation order | Interpolation interval (days) | Maximum distance error (km) | Mean distance error (km) | Standard deviation (km) | Data budget (byte/day) | Requirements satisfaction |
4 | 8 | 178.88 | 40.65 | 40.67 | 390 | yes |
| 16 | 2,462.02 | 612.83 | 597.09 | 195 | yes |
| 32 | 25,029.17 | 8,226.13 | 7,265.34 | 97.5 | no |
|
5 | 8 | 12.95 | 3.10 | 2.87 | 480 | yes |
| 16 | 267.41 | 79.80 | 65.44 | 240 | yes |
| 32 | 3,471.43 | 1,506.53 | 1,027.78 | 120 | no |
|
6 | 8 | 2.43 | 0.36 | 0.42 | 570 | yes |
| 16 | 88.03 | 15.68 | 17.11 | 285 | yes |
| 32 | 1,676.79 | 547.63 | 412.48 | 142.5 | yes |
|
7 | 8 | 0.37 | 0.05 | 0.06 | 660 | yes |
| 16 | 23.03 | 4.00 | 4.62 | 330 | yes |
| 32 | 612.10 | 188.20 | 162.04 | 165 | yes |
|
8 | 8 | 0.07 | 7.88E-3 | 0.01 | 750 | yes |
| 16 | 7.81 | 1.10 | 1.39 | 375 | yes |
| 32 | 298.24 | 80.53 | 69.93 | 187.5 | yes |