Record 235 · February 2015
Etude scientifique : « Spatial Point Pattern Analysis of the UAP »
GEIPAN / CNES · France
Ledger illustration of the record — not a scan of the original paper. — Night Ledger illustration of the file
The paper applies spatial exploratory data analysis and fits an inhomogeneous spatial Poisson process model to GEIPAN's archive of UAP observations. Significant variables linked to higher report density include population density and the presence of certain industrial or environmental sites. The analysis finds that most of the spatial variation can be accounted for by these terrestrial factors. Residual analysis identifies a few regions with elevated local intensity not fully explained by the model (e.g., near the Belgian border, parts of Brittany, Southeast France, Picardie, Haute-Normandie, Loiret, and Corrèze), but the overall approach treats the data as a statistical distribution of human reports rather than evidence of extraordinary phenomena. The study is one of several methodological papers published by GEIPAN to support scientific understanding of sighting patterns.
Public file: GEIPAN Official Documentation

