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AKNOWLEDGEMENTS 
The mentioned real-time navigation and precise trajectory 
determination technology are being developed within the frame 
of the GENIA (Galileo Enhanced Navigation with Inertial 
Aiding, ref. ESP2005-07599) project funded by the Spanish 
Ministerio de Educación y Ciencia. The mentioned orientation 
and calibration strategies are being developed within the frame 
of the ITAVERA project (GENA generic adjustment platform) 
funded by GeoNumerics (Barcelona, Spain). The HW PRS 
platform is being developed within the Iberoeka Brazilian- 
Spanish uVISION project for rotary wing UAS-based PRS (ref. 
IBK 06-460) The Spanish component of uVISION is being 
partially funded by the Spanish Ministerio de Industria, 
Turismo y Comercio (MITyC, FIT-350100-2006-383) and by 
the Catalan Centre d’Innovado i Desenvolupament 
Empresarial (CIDEM, RDITSCON06-1-0037). uVISION is 
lead by the company AURENSIS (Barcelona, Spain) with 
participation of AIN (Pamplona, Spain), GeoVirtual (Barcelona, 
Spain) and GeoNumerics. Last, but not least, the used medium- 
format camera (Hasselblad Biogon SWCE 903) has been 
kindly provided by the Ecole Polytechnique Fédérale de 
Lausanne (EPFL); we thank Dr. Jan Skaloud and Prof. 
Bertrand Merminod for this suppot.