Patent ID: 11867804
Assignee: OTT HYDROMET FELLBACH GMBH
Field: Measurement (Instruments)
Classification: CPC G  H  Y | IPC G  H

Claim 14:
15. A device for measuring precipitation using radar, the device comprising:
an antenna adapted to transmit and receive radar waves, wherein the antenna comprises a two-dimensional array of patch antennas arranged such that in the far field substantially plane waves can be emitted from the antenna, wherein the antenna is a single antenna;
wherein the antenna is oriented to the dielectric lens such that radar waves radiated from the antenna pass through the dielectric lens, wherein the antenna receives a reflected radar signal from the precipitation through the dielectric lens which focuses a plurality of parallel beams of the reflected radar signal to the antenna, wherein the antenna comprises a monostatic radar in which the antenna radiates the radar waves and the antenna receives the reflected radar signal each sharing a common path reducing a viewing angle of the precipitation with respect to the radiation of the radar waves and the receipt of the reflected radar signal, wherein an amount of precipitation is determined based upon a monostatic Doppler shift in which an interference in the reflected radar signal is separated by superposition with the radiated radar waves, and a correlation between velocity and size of the precipitation.