at each exposure station — with the extremely high accuracy of 
approximately 2' ... 4' (minutes of arc) which is the same order of 
accuracy obtained in highest precision photogrammetric instruments. 
6 References 
6.0 Boie, D.C. Untersuchungen zur Doppler-Navigation und 
1970 Ortung von geophysikalischen und photo- 
grammetrischen Messflügen, 
Dissertation, Hannover, 1970 
6.1 Boivin, S.T. de Camp. Operational aspects of inertial guidance in the 
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control programme 
5th International Agricultural Aviation Congress 
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6.2. Corten, F.LIH. Performance and cost of flight functions 
1968 ISP Congress, Lausana 1968 
63 Corten, F.1L.J.H. The aerial photographic package 
1973 ITC Journal 1973-3 
64 Corten, F.L.J.H. An integrated photographic survey flight system, 
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Stockholm, ITC Publication 1974 
6.5  Corten, F-L.1.H. The ITC PHOTNAV system, 
and Heimes, F.-J. International Congress, ISP, Helsinki 1976 
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6.6 Corten, F.L.].H. Economy in aerial survey by means of the ITC 
1976 PHOTNAV system, 
International Congress, ISP, Helsinki 1976 
6.7 DiCarlo, C. and Mapping and survey system Geodetic AN/USQ-28, 
Eakin, G. ISP Congress, 1964 
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6.9 Heimes, F.-J. and Aerial survey by means of an Inertial 
Delafkaran, G.H. Navigation System 
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6.10 Heimes, F.-J. In-Flight calibration of a survey aircraft system 
1972 Twelfth Congress ISP, Ottawa, 1972