VIA Technologies EPIA SN-Series Specifications download pdf (Page 137)

Conclusions

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Chapter 8. Conclusions

In this work a novel concept of photogrammetric and remote sensing instrument has

been discussed. The system is a fully-digital, direct georeferencing system used to acquire

images in different bands of the electromagnetic spectrum. To define the external

orientation parameters, avoiding traditional image scanning and aerial resection, a

combination of an inertial measurements platform and a GPS receiver has been used. The

system has been completely developed and an engineering model with reduced

functionalities has been assembled and tested.

To realize the EM a complete set of hardware parts have been defined according to a

requirements list, derived by the analysis of the state of the art technologies actually

available in the Geomatics field.

To complete a series of test flight campaign a flight planner tool, able to satisfy all

constraints of a photogrammetric campaign, has been developed in order to generate pre-

built trajectories to be followed by the pilot. During the flight test campaigns the

functioning of the pilot visual interface, expressly adapted for the purpose of this project,

was validated. In the last test campaign indeed, the pilot was able to keep the aircraft

inside the guidance tunnel almost for the entire mission (39 minutes) with a mean

distance from the planned trajectory of less than 13 m.

Over a thousand of images were acquired during the three test campaigns, although

only those of the last two were usable for georeferencing and mosaicing purposes.

Unfortunately, the work on these last two tasks is not completed yet. This is mainly due to

the lack of an high resolution digital elevation model of the over flown areas. Tests were

also done on image georeferencing using Google Earth software capabilities, showing the

difference between the 1 m satellite imagery database and the very high resolution images

acquired from the Ultra Light Aircraft at an altitude of 150m.

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VIA Technologies EPIA SN-Series Specifications Page 137