Closed loop orbit trim using GPSThis paper describes an onboard closed-loop navigation and control system capable of executing extremely precise orbit maneuvers. It uses information from the Global Positioning System (GPS) and an onboard controller to perform orbit adjustments. As a result, the system circumvents the need for extensive ground support. The particular application considered is an orbit injection system for NASA's Gravity Probe B (GP-B) spacecraft. Eccentricity adjustments of 0.0004 to 0.005, and inclination and node changes of 0.001 to 0.01 deg are demonstrated. The same technique can be adapted to other satellite missions.
Document ID
19900026449
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Parkinson, B. W. (Stanford University CA, United States)
Axelrad, P. (Stanford Univ. CA, United States)
Date Acquired
August 14, 2013
Publication Date
October 1, 1989
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking