I found that explantation in the TBC Help:
"...you can choose to extract scans from the raw data files, either completely directly or through an intermediate step named MTA. MTA (Multiple Time a Round) comes into play when collecting data at high sampling rates, which may cause ambiguity in the distance, allowing points with the wrong distance information to be recorded. To solve this problem, the MTA Correction module automatically detects and corrects the wrong distance information by applying the correct MTA range." (just translated from google, because Ive only the german version)
Where is the difference between that options? Should I choose the option "Rail" every time I captured railways?
best regards,
Andreas