摘要
分析了Bowring B R于1976年提出的大地纬度计算算法和1985年提出的改进算法的推导过程,得到改进算法通过两次近似处理可能会限制其适用范围的结论,并通过理论推导和大量计算进行了验证。两种算法的适用范围:高程H≤2 km时,采用1976年提出的Bowring算法;H≥20 km时,采用1985年提出的改进算法;2 km In this paper, we studied the geodetic latitude computational algorithm proposed by Bowring B R in 1976 and the improved algorithm proposed in 1985, and analyzed the derivations of the two algorithms. Then, we found that the improved algorithm might limit its scope of application by two approximation process. Finally, through theoretical proof and a large amount of calculation, we verified that the improved algorithm had certain application scope. When the elevation of H is less than or equal to 2 km, Bowring algorithm proposed in 1976 is feasible. When H is not less than 20 km, the improved algorithm is feasible. Under other circumstance, an algorithm is determined by height and latitude.
引文
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