Mispointing Angle Monitoring
Antenna mispointing angle at 1 Hz: the angle between the antenna boresight and the nadir direction, which should nominally be zero. It is derived from the antenna bench roll and pitch angles, measured by the star trackers and post-processed by the ground facility, as sin^2(mispointing) = sin^2(roll) + cos^2(roll) sin^2(pitch) (yaw does not change the boresight direction). The roll, pitch and yaw angles are also shown. Ascending and descending passes (from the rate of change of latitude) are also shown separately, as the attitude differs between them.
Baseline-F, cycle 194: 25-Aug-2026 to 23-Sep-2026 · 263 GDR-A files · data covers 18.1 of 30 days Partial cycle processed 11-Oct-2026 01:13 UTC
Mispointing Angle: Mispointing, All passes: Maps
Mispointing Angle: Mispointing, All passes: Cycle 194 Statistics
| Area | Records | Valid | Mean (mdeg) | Median (mdeg) | Std Dev (mdeg) | RMS (mdeg) | Min (mdeg) | Max (mdeg) |
|---|---|---|---|---|---|---|---|---|
| Global | 1,650,529 | 1,650,529 (100.0%) | 134.04 | 129.93 | 35.14 | 138.57 | 0.00 | 226.07 |
| North Polar (>60N) | 283,050 | 283,050 (100.0%) | 120.12 | 121.53 | 10.95 | 120.62 | 0.00 | 147.33 |
| South Polar (<60S) | 278,616 | 278,616 (100.0%) | 140.53 | 141.79 | 18.85 | 141.79 | 0.00 | 189.85 |
Statistics use every 1 Hz measurement of the cycle within each area. Std Dev is the population standard deviation, RMS the root mean square.
Mispointing Angle: Mispointing, All passes: Trends
Click a point to show that cycle.
