A radio controlled model helicopter is presented which is able to carry a 60 x 60 mrn format aerial camera. The characteristics of available and suitable cameras are discussed. A simple navigation procedure is illustrated. Examples of the first aerial photographs prove that the technique is fundamentally sound.

A new high precision photogrammetric system for measurements in industry is presented, which consists of a large format camera and a digital monocomparator. Retroreflecting targets support automatic measurement. Because of a rigorous réseau technique, the system requires lower mechanical effort and fewer costs than conventional systems. It is in operational use in the German and French Airbus Industries.

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Procedures for the calibration of a stereopair simultaneously with a bundle adjustment are presented. Distances and directions in object space are used as additional observations. The analytical simultaneous calibration of a photogrammetric camera is essential when instrument methods do not determine the precalibrated parameters of interior orientation with sufficient accuracy.

Bundle triangulation is an eficient tool for spatial point determination in architectural photogrammetry. All the information available in image and object space may be introduced in a combined adjustment yielding high precision and reliability. Camera calibration performed simultaneously with the object restitution process enables the application of convenient and flexible imaging systems based on professional photographic technology. Thus the survey of monuments can be carried out rapidly with a minimum of personnel and equipment. The photogrammetric recording of the basilica of San Francesco in Siena is presented as an example of the application of this survey procedure. The field work was accomplished in a few days. The equipment used consisted of a partial metric camera, an engineering theodolite and a tape. The bundle adjustment results gave spatial object co-ordinates with a r.m.s.e. of k I5 m m for a point.