Accession Number : ADA215671


Title :   An Autonomous Orbit Determination System for Earth Satellites


Descriptive Note : Doctoral thesis


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING


Personal Author(s) : Hicks, Kerry D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a215671.pdf


Report Date : Dec 1989


Pagination or Media Count : 228


Abstract : A new system for autonomous satellite navigation is developed and investigated. Unlike many previous studies, however, this system is not limited to the determination of an Earth satellite's current position. By using a two- step technique combined with a general perturbations model, this method allows the air-drag effect on the orbit to be estimated and applied to a future position prediction. Simulations using existing hardware have demonstrated that the algorithm presented is capable of current position estimates of sub- kilometer accuracy. Prediction precisions rival those of ground-based facilities: 8-12 kilometers two weeks in the future for low-Earth orbit. Keywords: Autonomous navigation; Orbit determination; Orbit prediction; Estimation; Position Estimation; Theses.


Descriptors :   *EARTH ORBITS , *PREDICTIONS , *AUTONOMOUS NAVIGATION , ALGORITHMS , FACILITIES , ESTIMATES , GROUND BASED , LOW ALTITUDE , DETERMINATION , PERTURBATIONS , ARTIFICIAL SATELLITES , THESES , MODELS , POSITION(LOCATION)


Subject Categories : Space Navigation and Guidance
      Spacecraft Trajectories and Reentry


Distribution Statement : APPROVED FOR PUBLIC RELEASE