Method and arrangement for distance measurement with electromagnetic waves using the pulse time of flight principle

摘要

The range measuring method has a short electromagnetic wave pulse transmitted at periodic transmission points, with sampling of the received signal in selected periods after the transmission points. A respective sample value is provided for each of a number of sample points within each of these periods having a different time delay relative to the transmission point. The latter delays are defined by a function, e.g. a linear sawtooth function, generated by a microcomputer using stored rules for generation of the function, or a stored function table.