{"title":"Two-stage three-dimensional obstacle avoidance and impact angle control guidance law","authors":"Rui Zhao , Xiang Yu , Dechuan Wang , Peng Yao","doi":"10.1016/j.ast.2025.110104","DOIUrl":null,"url":null,"abstract":"<div><div>Aiming at the problems of avoiding obstacle and solving impact angle control in terminal guidance in three-dimensional scene, a two-stage guidance law which consists of three-dimensional softmax modified vector field guidance (SMVFG) and sliding mode impact angle control guidance (SMIACG) is proposed in this paper. In the first stage, the three-dimensional SMVFG law is designed to avoid static obstacles encountered in terminal guidance. In the second stage, the three-dimensional SMIACG law is designed to control the impact angle of the terminal under the premise of ensuring zero miss distance. Furthermore, the accessibility and safety of the whole guidance process are proved theoretically. Several numerical simulations are carried out to verify the accessibility and safety of the proposed guidance laws in different scenarios.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"161 ","pages":"Article 110104"},"PeriodicalIF":5.8000,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Aerospace Science and Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1270963825001750","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, AEROSPACE","Score":null,"Total":0}
引用次数: 0
Abstract
Aiming at the problems of avoiding obstacle and solving impact angle control in terminal guidance in three-dimensional scene, a two-stage guidance law which consists of three-dimensional softmax modified vector field guidance (SMVFG) and sliding mode impact angle control guidance (SMIACG) is proposed in this paper. In the first stage, the three-dimensional SMVFG law is designed to avoid static obstacles encountered in terminal guidance. In the second stage, the three-dimensional SMIACG law is designed to control the impact angle of the terminal under the premise of ensuring zero miss distance. Furthermore, the accessibility and safety of the whole guidance process are proved theoretically. Several numerical simulations are carried out to verify the accessibility and safety of the proposed guidance laws in different scenarios.
期刊介绍：
Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to:
• The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites
• The control of their environment
• The study of various systems they are involved in, as supports or as targets.
Authors are invited to submit papers on new advances in the following topics to aerospace applications:
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• Signal and image processing
• Information processing
• Data fusion
• Decision aid
• Human behaviour
• Robotics and intelligent systems
• Complex system engineering.
Etc.
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