Hauth, S., M SchlĂĽter, Thiery, F.
3rd International Conference on Machine Control & Guidance Proceedings
<p>Initialized in 2009, the Institute for Spatial Information and Surveying Technology (i3mainz), Mainz University of Applied Sciences, forces research towards modular concepts for imaging total stations. On the one hand, this research is driven by the successful setup of high precision imaging motor theodolites in the near past, on the other hand it is pushed by the actual introduction of integrated imaging total stations to the positioning market by the manufacturers Leica Geosystems, Sokkia, Pentax, Topcon and Trimble.</p><p>Modular concepts for imaging total stations are manufacturer independent to a large extent and consist of a particular combination of accessory hardware, software and algorithmic procedures. The hardware part consists mainly of an interchangeable eyepiece adapter offering opportunities for digital imaging. An easy assembly and disassembly in the field is possible allowing the user to switch between the classical and the imaging use of a robotic total station. The software part primarily has to ensure hardware control, but several level of algorithmic support might be added and have to be distinguished. Algorithmic procedures allow reaching several levels of calibration concerning the geometry of the external digital camera and the total station. Here the resulting resolution capacity of our sensor fusion and also the accuracy of the system are presented based on examples. We deliver insight in our recent developments and quality characteristics.</p><p>The sensor fusion between camera and polar measuring system allows detecting and measuring different types of targets with high precision. MoDiTa is used to calibrate inclination sensors and to control the long-term stability of laser and tripods.</p>