| Version 9 (modified by asm, 6 weeks ago) (diff) |
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2023 Installations
The 2023 campaign saw four differnt configorations of instruments on board the VP-FBL Twin Otter in Italy, UK and Canada.
Instrument Orientations
Note: I believe that the IMU being "backwards" is the way our processing systems expect it.
| Installation | Julian Range | IMU | Owl | Fenix1k | Ibis | PhaseOne |
| Italy 1 | 143 - 152 | Backwards | Backwards | Backwards | Forwards | Forwards |
| Italy 2 | 176 - 183 | Backwards | Backwards | Backwards | Forwards | Forwards |
| UK | 190 - 200 | Forwards | Not Installed | Backwards | Forwards | Forwards |
| Canada | 226-235 | Forwards | Forwards | Backwards | Forwards | Forwards |
The following should outline the data from which instruments which requires across-sample flipping in order to map.
| Installation | Julian Range | Owl | Fenix1k | Ibis |
| Italy 1 | 143 - 152 | flip | ||
| Italy 2 | 176 - 183 | flip | ||
| UK | 190 - 200 | flip | ||
| Canada | 226-235 | flip |
Boresight Values
Values are in the format of pitch, roll and yaw.
| Installation | Julian Range | Fenix1k | Ibis | Owl |
| Italy 1 | 143 - 152 | 0.63 -1.10 1.90 | 0.18 -1.60 1.00 | See below |
| Italy 2 | 176 - 183 | See below | ||
| UK | 190 - 200 | 0.45 -0.10 1.50 | -0.20 -0.70 0.75 | Not installed |
| Canada | 226 - 235 |
The Owl boresighting for the Italy flights is more complicated as it was on a movable mount allowing data to be collected a different angles. Each angle changes the boresight offsets.
Italy 1 Owl Boresight:
| Angle | Pitch | Roll | Heading |
| Nadir | |||
| 20 | |||
| 35 |
Italy 2 Owl Boresight (julian day 179):
| Angle | Pitch | Roll | Heading |
| Nadir | 0 | -0.60 | 0.70 |
| 20 | -0.15 | -0.60 | 0.99 |
| 34 | -0.25 | -0.60 | 1.20 |
Note: Offsets for the 20 degrees looking angle have been estimated by scaling the difference between the nadir and 34 degree offsets.