The ratio [ C2T (θ) / C2T ( 180 °) ] and variation of C2T (θ) with altitude are related to antenna diameter , profile of wind velocity and m value .
CT~2（θ）与CT~2（180°）比值以及CT~2（θ）随高度的变化都与天线口径、风速分布和m值等密切相关。
c2t