Abstract
Aerial triangulation, in which the transformation parameters of central projection are solved from observed photograph coordinates of orientation points and ground control points using the least square method, has become a popular technology in the field of topographical survey by the help of computers. On the other hand, the process of field survey to establish photo signals (control point survey) has been remained as a laborious work (Ackermann, 1990) . Recently, the technology to utilize the coordinates of the aerial camera at each shot given by kinematic GPS observation into aerial triangulation has been developed, and thus the number of required photo signals can be dramatically reduced. In this paper, the authors compared two methods of GPS-assisted aerial triangulation with conventional methods. Namely, early established Shift Drift method and a newly developed Combined Phase Ambiguity Solution (CPAS) method are compared with Bundle and Independent Model adjustment methods. Also, a trial case to implement a block adjustment without any ground control points using CPAS method will be discussed.
