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Table 4
Approximate delay contributions at 140 MHz to a 700 km baseline.
| Effect | Delay | Timescale |
|
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| Non-dispersive | ||
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| Correlator model error | ~75 ns | 24 h (periodic) |
| Station clocks | ~20 ns | ~20 min |
| Source position offset (1.5′′) | ~ 15 ns | – |
|
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| Dispersive | ||
|
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| Slowly varying ionosphere | ~300 ns | ~h |
| Rapidly varying ionosphere | ≳10 ns | ~10 min |
| Differential ionosphere | 5 ns/deg sep. | – |
| (source elevation 60 deg) | ||
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