RADIO-TECHNICAL WHIRLWIND DETECTION METHOD Russian patent published in 2008 - IPC G01S13/95 

FIELD: physics.

SUBSTANCE: non-coherent meteorological (NMR) or Doppler radar (DMR) is used, interfaced with a radiometer, designed for determining water content of clouds. Simultaneously a metre-wave band radar set (RS_METRE) is used for detecting electrical processes in clouds in form of ionised lightning channels, as well as a device for directional reception of electromagnetic radiation of electrical discharges (R_{D EMR}) arising in the clouds. In that case if there is simultaneous detection of azimuth sectors of radio echo of clouds using NMR (DMR) with the upper boundary of the radio echo exceeding 9-10 km and the vertical profile of the maximum radar reflectivity with height of up to 7-8 km; high intensity of lightning activity (lightning after every 5 seconds or less); constant reflection zones in the cloud, detected by RS_METRE; large values of water content in the cloud zone at height of over 8-9 km relative the lower lying heights; electrical discharges, fixed by R_{D EMR} , in the azimuth sector near to the azimuth sector where there is high water content relative lower lying heights; then in that case it can be considered that, there is a whirlwind in the cloud.

EFFECT: increased authenticity of remote detection of whirlwinds using active-passive radio-technical equipment.

3 cl, 2 dwg