摘要
本文推导了地形改正谱方法中滤波算子（x^2+y^2）^(-3/2)的严格频响应函数为-4π~2(u^2+v^2)^(1/2)并用并排三棱柱模型和实际地形数据验证了所推公式的正确性，同时讨论了以往将滤波算子频响应函数作近似处理所造成的误差。
:
The rigorous frequency response function of filter operator (x2+y2)-3/2 used in the
spectrum method for computing terrain correction is derived as-4π2(u2+ v2)1/2.The corr-
ectness of the derived formula is validated by checking against a mbdel of prisms arran-
ged in rows and actual terrain data. Also discussed is the error introduced by the
thus far used practice of approximating the frequericy response function.
出处
《测绘学报》
EI
CSCD
北大核心
1989年第3期161-167,共7页
Acta Geodaetica et Cartographica Sinica
