Comparison of positioning performance using iterative solution with different initial estimate sources: Bancroft’s method and initial guesses in error from truth (simulates using prior positions): March 11 p.m. flight
| All calculated positions | Positions with errors < = 10 km | Positions with errors > 10 km | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Method for initial estimate | Mean err (m) | Stan. Dev. err (m) | Number of Pts | Mean err (m) | Stan. Dev. err (m) | Number of Pts | Mean err (m) | Stan. Dev. err (m) | Number of Pts |
| Bancroft | 960 | 10,441 | 8,143 | 29.3 | 21.5 | 8,056 | 81,946 | 54,765 | 87 |
| 0.5°error (70 km) from true lat/lon | 389 | 4,771 | 8,581 | 29.1 | 21.2 | 8,526 | 53,000 | 23,975 | 55 |
| 0.05°error (7 km) from true lat/lon | 29.5 | 22.3 | 8,586 | 29.5 | 22.3 | 8,586 | N/A | N/A | 0 |