Volume 39, Number 1, February 2021
|Page(s)||141 - 147|
|Published online||09 April 2021|
Study on project trajectory of air-to-ground missile with strapdown seeker under multi constraints
College of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China
2 Xi'an Modern Control Technology Research Institute, Xi'an 710065, China
The air-to-ground missile with strapdown seeker may have the problems, including small field of view(FOV), limited overload, and fall angle constraint. To solve the above mentioned problem, a phased guidance scheme is proposed. In this scheme, the attack trajectory is divided into the following six stages, including glided stage, fall angle constraint stage, target acquisition and adjustment stage, terminal guidance stage and blind zone stage. The glided stage is designed to increase range, the terminal fall angle is attained ahead of time at fall angle constraint stage. The aim of target acquisition and adjustment stage is to adjust the missile attitude, so that the target will fall within the FOV of the seeker. It creates good condition to capture the target for strapdown seeker. In the terminal stage, the guidance law of proportional navigation and attitude track are used to fit the needs of FOV constraint and attack accuracy. The simulation result shows that the project trajectory can solve the application of attacking moving targets for air-to-ground missile with strapdown seeker under multi constraints.
Key words: strapdown seeker / segmented guidance strategy / fall angle constraint / trajectory planning
关键字 : 全捷联导引头 / 分段制导 / 落角约束 / 弹道规划
© 2021 Journal of Northwestern Polytechnical University. All rights reserved.
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