The instrument is a time-of-flight mass spectrometer which measures particle time-of-flight over an about 0.5 m path, and the residual energy deposited in an array of Si solid state detectors. The SAMPEX LEICA instrument is designed to measure about 0.5-5 MeV/nucleon solar and magnetospheric ions over the range from He to Ni. LEICA - A low energy ion composition analyzer for the study of solar and magnetospheric heavy ions Instead, comparison of Leica backpack and TLS surveys leads to an average error of 4.7cm and standard deviation 0.6cm (4.2cm and 0.3cm, respectively, by excluding the final part of the left wing). Excluding the final part of the bastion left wing, where the presence of several poles make reconstruction more difficult, (RMSE) fitting error is 17.3cm, average error 11.5cm, and standard deviation 9.5cm. Compared with the TLS survey, the considered photogrammetric model of the bastion results in a RMSE of 21.9cm, average error 13.4cm, and standard deviation 13.5cm. Then, in order to obtain a metric reconstruction, scale factor in the photogrammetric survey is estimated by comparing camera positions obtained from UWB measurements with those obtained from photogrammetric reconstruction. In particular, low cost Pozyx UWB devices are used to estimate camera positions during image acquisitions. Despite control points are typically used to avoid deformations in photogrammetric surveys and ensure correct scaling of the reconstruction, in this paper a different approach is considered: this work is part of a project aiming at the development of a system exploiting ultra-wide band (UWB) devices to provide correct scaling of the reconstruction. Furhtermore, terrestrial laser scanning (TLS) survey is considered in order to provide a state of the art reconstruction of the bastion. This paper considers Leica backpack and photogrammetric surveys of a mediaeval bastion in Padua, Italy. The contents include: 1) Project Area Overview 2) Leica ADS40 Sensor 3) Focal Plate Arrangements 4) Trichroid Filter 5) Gradient Correction 6) Image Acquisition 7) Remote Sensing and ADS40 8) Band comparisons of Satellite and Airborne Sensors 9) Impervious Surface Extraction and 10) Impervious Surface Details.Ĭomparison of Low Cost Photogrammetric Survey with Tls and Leica Pegasus Backpack 3d Modelss The Leica ADS40 Sensor as it is used for coastal multispectral imaging is presented.
Leica ADS40 Sensor for Coastal Multispectral Imaging
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