translate English to German: Some clutter may also be caused by a long waveguide between the radar transceiver and the antenna. In a typical PPI radar with a rotating antenna, this will usually be seen as a "sun" or "sunburst" in the centre of the display as the receiver responds to echoes from dust particles and misguided RF in the waveguide.
Der 23-jährige Christian Hülsmeyer wollte eigentlich Lehrer werden.