MESOSPHERIC MF RADAR IN WUHAN AND ITS PRELIMINARY OBSERVATION RESULTS

The MF radar was installed and firstly used to observe the mesospheric electron wind and ionospheric density over Wuhan. In this paper, the principle and configurations of the radar and its preliminary observations are presented. Providing the measurements of wind field and the electron density at height ranges from 60 to 100 km, the radar is configured with Spaced Antenna Mode. The method of Full Correlation Analysis is applied to estimate the wind field, while the Differential Absorption or Differential Phase Experiment technique is used to measure the electron density. The preliminarily observation results show that （1） the zonal wind usually is in west wind at Feb. 9, 200l, its value about 30-50m/s, while the meridional wind is about 10-20 m/s and vertical wind is weak with a speed is less than about 5m/s at 60-100km height over Wuhan. （2） There’s obviously diurnal variation of wind field and electron density at 60-100 km, and a wind shear is occasionally observed. （3） there’s obvious disturbance of the wind field in the mesosphere, which could be connected with the atmospheric waves.