Accession Number:

AD0739492

Title:

Techniques for Generating a 'Real World' Ephemeris

Descriptive Note:

Rept. for 1 Jan 1971-1 Jan 1972

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA ENGINEERING SCIENCE OPERATIONS

Personal Author(s):

Report Date:

1971-07-01

Pagination or Media Count:

112.0

Abstract:

The report documents the procedure for generating a real world ephemeris tape to be used by The Aerospace Corporation and selected contractors in Phase 0 of the Autonomous Navigation System ANS contract. A real world geopotential model was developed by modifying a state-of-the-art reference geopotential, using Kaulas degree variances as a guide. To obtain real world atmosphere data, the acceleration profile experienced by the first in a recent series of low altitude satellites to have an on-board low-g accelerometer was suitably scaled. The resulting ephemeris is displayed and subjected to various consistency tests.

Subject Categories:

  • Spacecraft Trajectories and Reentry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE