|Table of Contents|

Effect of Normal Gravity and Ellipsoid Earth Surface on Trajectory Calculation

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2009年05期
Page:
607-611
Research Field:
Publishing date:

Info

Title:
Effect of Normal Gravity and Ellipsoid Earth Surface on Trajectory Calculation
Author(s):
LIN Xian-wuWANG Zhong-yuanWANG Tian-mingCHANG Si-jiang
School of Power Engineering,NUST,Nanjing 210094,China
Keywords:
normal gravity normal earth ellipsoid trajectory spherical harmonious functions ranges
PACS:
U666.1
DOI:
-
Abstract:
To consider the effect of the earth on the calculation of ultra range trajectory more accurately,an elliptic earth trajectory model adopting accurate normal gravity is established.The calculation method for the rocket impact point and flight height is discussed.An accurate normal gravity calculation method is deducted and an elliptic earth trajectory model is obtained.The error of range calculation by adopting a plain earth model is calculated and analyzed.The result shows that,in terms of the long range trajectory,the range calculation error caused by the ellipsoid earth surface trajectory model is smaller than that by the plain earth surface trajectory model.

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Memo

Memo:
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Last Update: 2012-11-19