Claim register
Claim Evaluation
Every claim is stated exactly, traced to its origin, and evaluated against the best supporting and the best opposing case. Scientific claims must expose their full reasoning chain — observation, measurement, calculation, prediction, physical test, result, replication — and declare per-model predictions BEFORE the result is shown. Appeals to authority (“science says”, “experts agree”, “the math proves it”, “settled”) are not evidence. Confidence is authored, not tallied. Preserve disagreement rather than force a conclusion.
- Incomplete — primary sources not yet ingestedThe universal comparison scaffold below is a placeholder. Do not treat empty sections as evidence.
Satellite orbits and GPS positioning
UnresolvedThe GPS constellation broadcasts ephemeris and clock data consistent with satellites in Keplerian orbits around a spherical Earth, and receivers compute positions via time-of-flight trilateration.
Origin: Topic acknowledged; primary sources not yet ingested into this record.
Best supporting case
Awaiting primary-source ingest before an authored comparison.
Best opposing case
Awaiting primary-source ingest before an authored comparison.
Evidence
Universal comparison · who claims what, and how each model explains it
ExperimentalWho makes the claim: US Space Force GPS Directorate; ICD-GPS-200 specification.Scope: See exact wording for scope and definitions; further scoping to follow with primary sources.
Flat / enclosed model
What it says: Some flat-earth accounts propose ground-based transmitters, high-altitude relays, or 'stratellites' as the actual signal source.
Required assumptions: earth-oblate-spheroid, celestial-distances, imagery-admissibility
Strongest objection: Awaiting primary-source ingest.
Falsifier: An independent radio-astronomy team receiving GPS L1 signals from a source above the geostationary shell would refute this.
Globe model
What it says: Satellites at ≈ 20,200 km altitude produce the observed pseudo-range residuals to millimetre precision after ionosphere/troposphere correction.
Required assumptions: earth-oblate-spheroid, celestial-distances, imagery-admissibility
Strongest objection: Awaiting primary-source ingest.
Falsifier: A calibrated antenna array producing directional signal-source fixes below the horizon rather than at MEO altitudes.
Circular-reasoning check
No circular-reasoning risks identified in the authored evidence chain.
Knowledge library · claim → equation → law → assumptions
Laws / principles
Theories / models
Hidden assumptions
— none recorded —
Missing evidence
- Primary sources for the flat-model explanation.
- Primary sources for the globe-model explanation.
- At least one reproducible physical test with independent replication.
Contradictions
— none recorded —
Reproducibility
- Not yet documented in this record.
Confidence · not_rated
This record is a structural placeholder. Confidence will only be rated once primary sources and reasoning chain are authored.
Confidence is authored, not tallied. It reflects primary vs. secondary evidence, source independence, methodology, conflicts, and reproducibility — not the count of sources.