How the Verifier Works
The Verifier computes the Haversine great-circle distance between your original and claimed-transformed coordinate pairs. It then compares this against the expected shift range for the selected datum transformation pair, and classifies the result:
- Acceptable —Deviation is within the expected tolerance of the transformation method
- Suspicious —Deviation is outside expected range but below catastrophic mismatch tolerance. Manual review recommended.
- Severe Mismatch —Deviation strongly suggests a datum confusion error (e.g., Tokyo treated as JGD2011, GDA94 treated as GDA2020). Transformation is invalid —do not use in production.
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専門家による測地検証済み
専門的な測地基準に準拠して検証済み
The $50,000 Geodetic Drift Liability: NAD83 vs WGS84
北米プレートは年間約2cm移動するため、NAD83(2011)とWGS84(G1762)は現在2.2メートル以上乖離しています。 高精度なNAD83地籍杭打ちに「標準的な」GPS WGS84座標を使用したことで、基礎のやり直しやインフラの配置ミスによる5万ドルの専門家責任賠償請求が発生しています。
Risk Exposure Metric:
2.2-Meter Tectonic Drift & Epoch Accumulation