NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Efficient estimation algorithms for a satellite-aided search and rescue missionIt has been suggested to establish a search and rescue orbiting satellite system as a means for locating distress signals from downed aircraft, small boats, and overland expeditions. Emissions from Emergency Locator Transmitters (ELT), now available in most U.S. aircraft are to be utilized in the positioning procedure. A description is presented of a set of Doppler navigation algorithms for extracting ELT position coordinates from Doppler data. The algorithms have been programmed for a small computing machine and the resulting system has successfully processed both real and simulated Doppler data. A software system for solving the Doppler navigation problem must include an orbit propagator, a first guess algorithm, and an algorithm for estimating longitude and latitude from Doppler data. Each of these components is considered.
Document ID
19780048000
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Argentiero, P.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Garza-Robles, R.
(NASA Goddard Space Flight Center Greenbelt, Md., United States)
Date Acquired
August 9, 2013
Publication Date
September 1, 1977
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Accession Number
78A31909
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available