快速汉克尔变换出现于上世纪70年代,后经Johansen等人发展。快速汉克尔是一种求解贝赛尔函数方程在(0~ ∞)区间上积分的快速数值算法。其逆变换与正变换对称。
比较详细地分析了快速汉克尔变换误差原因,给出修正方案,有效地提高了算法精度。
The article has analyzed error cause of fast hankel transform in detail, and the correction schemes are gived, and has effectively raised the algorithm accuracy.
数值计算例表明,用快速汉克尔变换来模拟柱对称大型高功率激光放大系统中的光传输时,是一种非常有用的、快速的算法。
Numerical examples show that FHT is a useful fast algorithm to simulate the beam propagation through a large high power laser amplifier system with cylindrical symmetry.
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