State and parameter estimation for reentry vehicle lateral motion
Abstract
A four state dynamical model of reentry vehicle motion was used in a weighted least squares batch estimation algorithm to determine the angular motion and aerodynamic coefficients for a trajectory of known velocity, dynamic pressure, and roll rate. A model was proposed for the time variation of the aerodynamic coefficients. Simulated accelerometer and gyro measurements were processed to estimate the unknown states and coefficients. A second order measurement model was developed to account for the dynamic response characteristics of onboard measurement sensors in the presence of reentry vehicle oscillatory behavior. Examples are provided which illustrate the feasibility of the four state dynamical model and second order measurement model in reentry vehicle estimation problems.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1979
- Bibcode:
- 1979PhDT.......105M
- Keywords:
-
- Aerodynamic Coefficients;
- Parameterization;
- Reentry Vehicles;
- Accelerometers;
- Dynamic Models;
- Dynamic Response;
- Gyro Horizons;
- Least Squares Method;
- Onboard Equipment;
- Astrodynamics