useful capture

With the development of modern air battle,airborne fire control system and air-to-air missile,the concept of attacking area meets with a great challenge,and the concept of effective capturing area is a key to deal with the challenge.

随着现代空战、航空火力控制系统和空空导弹的发展,空空导弹的可攻击区概念受到了巨大的挑战,有效截获区概念是解决这一挑战的关键。

The effective trapping force is defined and the effective force of a ring beam trap is calculated in the ray optics regime.

定义了光阱的有效捕获力 ,然后在几何光学范围内计算了环形光束形成的光阱———空心光阱的有效捕获力 ,并把空心光阱与实心光阱产生的光阱有效捕获力作了比较。