Abraham (2002) presented and proved that the envelope of the sum of finite complex random variables, whose amplitude obeys exponential distribution and phase obeys uniform distribution, is K distributed.

• Abraham(2002)从海底散射的物理现象出发,提出并证明了有限个幅度服从指数分布,相位服从均匀分布的复随机变量之和的模服从K分布。