1. Department of Cartography São Paulo State University (UNESP) Presidente Prudente Brazil
2. Department of Mathematics Universitat Politècnica de Catalunya (UPC) UPC‐IonSAT UPC‐IEEC Research Groups Barcelona Spain
3. Deutsches Geodätisches Forschungsinstitut der Technischen Universität München Munich Germany
4. National Land Survey Finnish Geospatial Research Institute (FGI) Kirkkonummi Finland