Date of Award
3-26-2015
Document Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
Department
Department of Electrical and Computer Engineering
First Advisor
John F. Raquet, PhD.
Abstract
This dissertation evaluates a navigation system using satellite observations from a star tracker tightly-integrated with an inertial measurement unit (IMU) and a barometric altimeter using an extended Kalman filter. The star tracker measurement accuracy of a satellite is derived. Several system configurations are simulated comparing the performance of the estimate with respect to system parameters of the IMU, and star tracker, as well as comparing performance when providing a remote sensor satellite ephemeris error correction. Experimental observations are used to evaluate the model performance. Additionally, power requirements were calculated for a satellite signal operating in imaging bands, such that a Low Earth Orbiting satellite constellation could be detected during the day. This type of signal would make it possible to operate the star tracker integrated navigation system in GPS-degraded environments with similar duration and comparable accuracy of GPS.
AFIT Designator
AFIT-ENG-DS-15-M-260
DTIC Accession Number
ADA616081
Recommended Citation
Pierce, Scott J., "Modeling Navigation System Performance of a Satellite-Observing Star Tracker Tightly Integrated with an Inertial Measurement Unit" (2015). Theses and Dissertations. 50.
https://scholar.afit.edu/etd/50