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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B-YF. Istanbul 2004 
  
(2) The triangulation to get the GCP on the ground with the 
bundle block adjustment. This triangulation can be done after 
identification from several snapshoots using the (old) aerial 
photograph for gross orientation. 
(3) The aerial triangulation itself, to orientate the (old) aerial 
photographs using the GCP. 
All of these triangulation could be done simultaneously in an 
adjustment with adequate software. 
With this method it is hoped that for most cases, a landing of 
helicopter is not more necessary. Landing is the most critical 
phase in the survey. Some potential GCP is not measured due 
to the impossibility for the helicopter to have save landing. 
This method should be tested during the end of the project in 
2003. The result of the test should be then compared to the 
conventional one. Unfortunately, an accident of one of 
helicopter (crash against power line) has stopped the whole 
operation. Mid 2004, the experiment is planed to be 
continued. 
Conclusion 
This paper should give the idea of multi-triangulation as a 
solution in a situation, where only old unpremarked aerial 
photographs are exist. The briefly idea should encourage 
researcher in photogrammetry to share the information, idea 
and experience. Not all detail could be given in this paper due 
to the restriction during the process of patent application. 
References 
Kraus, K. ((1986): Photogrammetry Band I. Grundlagen und 
Standardverfahren. Duemmler Bonn. 
Karara, H.M. (Ed, 1988): Non Topographic Photogrammetry, 
Second Edition. ASPRS. 
Reed, K. (1995): Medium Scale Digital Mapping Project in 
Indonesia. Photogrammetric Week, Stuttgart.