Two strategies are presented for semi-autonomous on-board trajectory propagation. One implements a semi-analytic method and rectifies, when needed, a simple on-board (on-line) ephemeris. The method is called rectification in which only several parameters are uplinked to the spa
Selection note: Curated because “Semi-Autonomous Spacecraft On-Board Ephemeris Propagation” covers spacecraft, navigation, ephemeris, autonomous; it materially informs GShips work on autonomous navigation.
Evidence boundary: NTRS provides metadata and an abstract, not reviewed full text; methods, results, and current applicability remain unverified. Inclusion is contextual, not automatic claim evidence.
Stable record
ntrs-20210001209
Topic
ai-autonomy
Type
Other
Publisher
Jet Propulsion Laboratory
Authors
Kangas, J.; Salama, A.
Year
1995
Editorial state
metadata curated editorial draft
Reviewer
GShips Project editorial synthesis
Official link checked
2026-07-25
Source-supplied abstract
Two strategies are presented for semi-autonomous on-board trajectory propagation. One implements a semi-analytic method and rectifies, when needed, a simple on-board (on-line) ephemeris. The method is called rectification in which only several parameters are uplinked to the spacecraft infrequently. The other strategy uses TOPEX/POSEIDON experience to build a data compression device for a wide range of orbits. A trade-off study is conducted to relate accuracy requirements with semi-major axis and eccentricity to minimize the frequency of uplinking.
Abstract text has not been adopted as a GShips conclusion.
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NTRS provides metadata and an abstract, not reviewed full text; methods, results, and current applicability remain unverified. Inclusion is contextual, not automatic claim evidence.
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People, review, and conflicts
Prepared by
GShips Project
Editorial status
metadata-curated-editorial-draft
Editorial reviewer
GShips Project editorial synthesis
Last editorial review
No editorial-review date recorded
Independent review
pending
Independent reviewer
No independent reviewer assigned
Last independent review
No independent-review date exists
Last content edit
Not recorded separately
Official source or link verified
2026-07-25
Declared conflicts
The maintainer intends to explore a commercial venture based on some GShips work. No entity, outside funding, customer, sponsor, or indexed-organization relationship currently exists.