Non-stationary shaping filters for simulation of gravity uncertainty effects on missile trajectories
Abstract
Uncertainties in knowledge of gravity disturbances along a missile trajectory can contribute an important fraction of the system error. This paper presents a simulation model in which a state-space shaping filter is intentionally operated out of steady state and the resulting nonstationary model statistics are tuned to approximate the desired gravity error statistics. This model makes it especially easy to add gravity errors to a covariance simulation for other missile system errors. Comparisons with existing three-dimensional algebraic (not state space) gravity statistics models are used to adjust and evaluate the new model.
- Publication:
-
Guidance and Control Conference
- Pub Date:
- 1982
- Bibcode:
- 1982guco.conf..821B
- Keywords:
-
- Gravitational Effects;
- Missile Trajectories;
- Motion Simulators;
- State Vectors;
- Statistical Analysis;
- Systems Simulation;
- Covariance;
- Error Analysis;
- Linear Systems;
- Mathematical Models;
- Steady State;
- Stochastic Processes;
- Astrodynamics