Predictor-Corrector Reentry Guidance Based on Drag Acceleration

被引：0
|
作者：
Wang T. [1 ]
Zhang H.-B. [1 ]
Zhu R.-Y. [2 ]
Tang G.-J. [1 ]
机构：
[1] College of Aerospace Science and Engineering, National University of Defense Technology, Changsha
[2] Research & Development Center, China Academy of Launch Vehicle Technology, Beijing
来源：
Zhang, Hong-Bo (zhanghb1304@nudt.edu.cn) | 2017年 / China Spaceflight Society卷 / 38期
关键词：
Drag acceleration; Guidance; Predictor-corrector; Reentry; Tracking differentiator;
D O I：
10.3873/j.issn.1000-1328.2017.02.005
中图分类号：
学科分类号：
摘要：
Based on drag acceleration profile, a predictor-corrector guidance law which can guide longitudinal motion and lateral motion synergistically is proposed in this paper. The drag acceleration profile is designed through interpolating between upper drag boundary and lower drag boundary, and then corrected to eliminate the range error. The altitude error is eliminated by adjusting attack angle. The lateral error is eliminated by regulating the reversal time of bank angle. Comparing with the traditional methods, the proposed one can correct the 3-dimensional motion of the vehicle. Using interpolated drag acceleration profile, the flight constraints can be easily dealt with. Moreover, in a correction cycle, the method in this paper only needs twice trajectory predictions, which is favorable for on-board calculation. The simulation results indicate that the proposed guidance law has a high precision and robustness. © 2017, Editorial Dept. of JA. All right reserved.
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页码：143 / 151
页数：8
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