Research Article
Influence of the Choice of Lunar Gravity Model on Orbit Determination for Lunar Orbiters
Table 17
Computational times for lunar orbiter orbit determination using various gravity models.
| | Lunar gravity model | Long term (70 × 70, one month) | Degree and order (84 h) | | Total | (Filter + smoother) | | Total | (Filter + smoother) |
| | GLGM2 | 409 s | (394 s + 15 s) | 21 × 21
40 × 40
70 × 70 | 19 s
27 s
50 s | (16 s + 3 s)
(24 s + 3 s)
(43 s + 7 s) |
| | LP100K | 448 s | (392 s + 56 s) | 21 × 21
40 × 40
70 × 70
100 × 100 | 19 s
26 s
55 s
86 s | (16 s + 3 s)
(23 s + 3 s)
(47 s + 8 s)
(75 s + 11 s) |
| | LP150Q | 442 s | (386 s + 56 s) | 21 × 21
40 × 40
70 × 70
100 × 100
150 × 150 | 19 s
27 s
54 s
85 s
168 s | (16 s + 3 s)
(23 s + 4 s)
(48 s + 6 s)
(74 s + 11 s)
(148 s + 20 s) |
| | GRAIL420A | 424 s | (375 s + 49 s) | 21 × 21
40 × 40
70 × 70
100 × 100
200 × 200
300 × 300
420 × 420 | 17 s
27 s
49 s
80 s
270 s
720 s
1669 s | (15 s + 2 s)
(24 s + 3 s)
(43 s + 6 s)
(70 s + 10 s)
(237 s + 33 s)
(627 s + 75 s)
(1502 s + 167 s) |
| | GRAIL660B | 430 s | (377 s + 53 s) | 21 × 21
40 × 40
70 × 70
100 × 100
200 × 200
300 × 300
660 × 660 | 18 s
28 s
51 s
86 s
285 s
662 s
7314 s | (16 s + 2 s)
(24 s + 4 s)
(44 s + 7 s)
(75 s + 11 s)
(250 s + 35 s)
(583 s + 79 s)
(6679 s + 635 s) |
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