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Time transfer by laser ranging; characteristics of onboard instruments.
| Instrument | Accuracy (ps) | Detector (photon, ps) | Timer (ps) | Stability (ps) | Link | |
|---|---|---|---|---|---|---|
| 1-shot | NP | |||||
| MLA | 200 | 500 | 1-way downlink | |||
| LRO | 360 | 165 / 5 s | 1-way uplink | |||
| T2L2 | < 100 | multiple, 70 | 3 | 45–50 | 3–4 / 30 s | 2-way (LRA) |
| LTT | single, <150 | <100 | 260 | 20 /500 s | id. | |
| ELT | 25 | id. | <1 | 10 | 3 /300 s | id. |
| GPS (CV) | 1–2 ns | 5 ns (15 min) | 1 ns /1 day | 1-way | ||
