Spectral analysis of US Space Catalog ephemerides for LAGEOS-1
File(s)
Supporting information
Author(s)
Araya, Isaias A
Amato, Davide
Type
Conference Paper
Abstract
The US Space Catalog is the primary source of public ephemeris data on Resident Space Objects. Catalog ephemerides are published as Two-Line Elements (TLEs) which were originally defined as singly-averaged elements according to the Simplified General Perturbations 4 (SGP4) theory. Recently, TLEs have been derived through numerical fits to underlying special perturbations solutions. We conjecture that the numerical fit results in short-periodic terms being embedded in TLEs, and analyse the amplitude spectrum of piecewise continuous osculating solutions derived from TLE sequences for the LAGEOS-1 satellite. The orbital elements spectra contain short-periodic terms at frequencies larger than those reconstructed by the SGP4 theory, which supports the conjecture. For LAGEOS-1, short-periodic terms in addition to those already considered by SGP4 should not be added to TLEs in an effort to improve their accuracy, as they are likely to have been already partially embedded in the TLEs.
Date Issued
2022-01-03
Date Acceptance
2021-12-01
Citation
AIAA SCITECH 2022 Forum, 2022, pp.1-11
Publisher
American Institute of Aeronautics and Astronautics
Start Page
1
End Page
11
Journal / Book Title
AIAA SCITECH 2022 Forum
Copyright Statement
© 2022 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
Identifier
https://arc.aiaa.org/doi/10.2514/6.2022-1772
Source
AIAA SCITECH 2022 Forum
Publication Status
Published
Start Date
2022-01-03
Finish Date
2022-01-07
Coverage Spatial
San Diego, CA & Virtual
Date Publish Online
2021-12-29