Taking no account of the non - uniformity of the detector , this paper analyzed the performance of the traditional four - quadrant angle - measurement algorithm and two other algorithms in calculating the pitch angle and the deflection angle of the incident ray , and also compared the error curve of the pitch angle calculated by each algorithm in the full plane 摘要在不考慮探測器非均勻性影響的情況下,本文分析了傳統四象限測角算法和另外幾種算法在計算入射光的俯仰角和偏轉角時的性能,還比較了在整個平面內各個算法得到的俯仰角的誤差曲面。
8 . this thesis initiates the 8 - quadrant angle computing method . this method can rapidly recognize the adjacency relationship of all the edges linked with the same node and avoid the complicated computing of trigonometric function . furthermore , this method can rapidly construct the adjacency relationship of all the arcs linked with the same node , in the construction of topological data structure in gis , which is helpful to the rapid construction of topological structure 創造性地提出了a象限角度計算法,它可以實現快速確定與同一結點相連接的所有邊的鄰接關系;避免了復雜的三角函數計算,而且該算法還可以在gis的拓撲數據結構建立過程中,快速地構建與同一結點相連的所有弧段間的鄰接關系,為拓撲結構的快速建立創造了條件。