Error Propagation & Mission Profile Analysis
Calculate position uncertainty propagation, sensor requirements, and mission feasibility for custom underwater navigation profiles with comprehensive error budgeting.
| Parameter | Current Value | Required for Target | Status |
|---|---|---|---|
| INS Drift Rate | -- | -- | -- |
| DVL Update Rate | -- | -- | -- |
| LBL Coverage | -- | -- | -- |
| LBL Accuracy | -- | -- | -- |
Position error grows over time due to sensor noise and bias drift. The total error is a combination of INS drift, sensor aiding effectiveness, and environmental factors:
Without aiding, INS position error grows approximately linearly with distance traveled due to velocity errors from gyro and accelerometer noise:
DVL provides velocity measurements that bound INS error growth. With regular DVL updates, position uncertainty is reset periodically:
LBL provides direct position fixes that reset absolute position uncertainty:
A mission is feasible if the predicted maximum position error remains within required accuracy bounds throughout the mission duration. Key considerations: