| 摘要 |
FIELD: instrumentation.SUBSTANCE: proposed device comprises microwave fixed frequency microwave oscillator connected via first power divider, primary output of directed coupler and circulator to transceiver antenna for irradiation of electromagnetic waves towards the fluid surface and perpendicular thereto and receipt of reflected electromagnetic waves. Besides, device comprises 1mixer of radiated and received waves, its first and second inputs being connected to extra output of directed coupled and output of circulator via 2power divider, 2mixer, 1and 2frequency N-factor dividers. Note here that 1and 2inputs of second mixer are connected via 1and 2frequency N-factor divider with second outputs of 1and 2power divider while second mixer output is connected with computer.EFFECT: higher precision.1 dwg |
