典型文献
Normal gravity model for inertial navigation of a hypersonic boost-glide vehicle
文献摘要：
The normal gravity model of a hypersonic boost-glide vehicle in near space is studied in this paper with the aim of alleviating the influence of the gravity model error on the precision of the inertial navigation system(INS)during flight.First,a spherical harmonic model of the Earth's gravitational field is introduced and the normal gravity of the Earth is derived from it.Then,the coordinate transformation needed for the application of the gravity model to the near-space navigation algorithm is formulated.Subsequently,the gravity disturbance in near space and the impact of J2 and Ji gravity truncation errors are analyzed.Finally,different normal gravity models and different precisions of inertial measurement unit(IMU)are exploited to simulate the near-space navigation algorithm.Based on this,the influence of the independent and combined effects caused by the interference factors is analyzed,and the applicable conditions of the normal gravity model are discussed.
文献关键词：
中图分类号：
作者姓名：
Kai CHEN;Cheng-zhi ZENG;Sen-sen PEI;Wen-chao LIANG
作者机构：
School of Astronautics,Northwestern Polytechnical University,Xi'an 710072,China
文献出处：
引用格式：
[1]Kai CHEN;Cheng-zhi ZENG;Sen-sen PEI;Wen-chao LIANG-.Normal gravity model for inertial navigation of a hypersonic boost-glide vehicle)[J].浙江大学学报（英文版）（A辑：应用物理和工程）,2022(01):55-67
A类：
B类：
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AB值：
0.499413
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