Optimal Midcourse Guidance with Terminal Relaxation and Range Convex Optimization

In midcourse guidance, strong constraints and dual-channel control coupling pose major challenges for trajectory optimization. To address this, this paper proposes an optimal guidance method based on terminal relaxation and range convex programming. The study first derived a range-domain dynamics mo...

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Main Authors: Jiong Li, Jinlin Zhang, Jikun Ye, Lei Shao, Xiangwei Bu
Format: Article
Language:English
Published: MDPI AG 2025-07-01
Series:Aerospace
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Online Access:https://www.mdpi.com/2226-4310/12/7/618
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author Jiong Li
Jinlin Zhang
Jikun Ye
Lei Shao
Xiangwei Bu
author_facet Jiong Li
Jinlin Zhang
Jikun Ye
Lei Shao
Xiangwei Bu
author_sort Jiong Li
collection DOAJ
description In midcourse guidance, strong constraints and dual-channel control coupling pose major challenges for trajectory optimization. To address this, this paper proposes an optimal guidance method based on terminal relaxation and range convex programming. The study first derived a range-domain dynamics model with the angle of attack and bank angle as dual control inputs, augmented with path constraints including heat flux limitations, to formulate the midcourse guidance optimization problem. A terminal relaxation strategy was then proposed to mitigate numerical infeasibility induced by rigid terminal constraints, thereby guaranteeing the solvability of successive subproblems. Through the integration of affine variable transformations and successive linearization techniques, the original nonconvex problem was systematically converted into a second-order cone programming (SOCP) formulation, with theoretical equivalence between the relaxed and original problems established under well-justified assumptions. Furthermore, a heuristic initial trajectory generation scheme was devised, and the solution was obtained via a sequential convex programming (SCP) algorithm. Numerical simulation results demonstrated that the proposed method effectively satisfies strict path constraints, successfully generates feasible midcourse guidance trajectories, and exhibits strong computational efficiency and robustness. Additionally, a systematic comparison was conducted to evaluate the impact of different interpolation methods and discretization point quantities on algorithm performance.
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institution Kabale University
issn 2226-4310
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publishDate 2025-07-01
publisher MDPI AG
record_format Article
series Aerospace
spelling doaj-art-181ab03bfdff478cb35eecb910d41d372025-08-20T03:35:27ZengMDPI AGAerospace2226-43102025-07-0112761810.3390/aerospace12070618Optimal Midcourse Guidance with Terminal Relaxation and Range Convex OptimizationJiong Li0Jinlin Zhang1Jikun Ye2Lei Shao3Xiangwei Bu4Air Defense and Antimissile School, Air Force Engineering University, Xi’an 710038, ChinaAir Defense and Antimissile School, Air Force Engineering University, Xi’an 710038, ChinaAir Defense and Antimissile School, Air Force Engineering University, Xi’an 710038, ChinaAir Defense and Antimissile School, Air Force Engineering University, Xi’an 710038, ChinaAir Defense and Antimissile School, Air Force Engineering University, Xi’an 710038, ChinaIn midcourse guidance, strong constraints and dual-channel control coupling pose major challenges for trajectory optimization. To address this, this paper proposes an optimal guidance method based on terminal relaxation and range convex programming. The study first derived a range-domain dynamics model with the angle of attack and bank angle as dual control inputs, augmented with path constraints including heat flux limitations, to formulate the midcourse guidance optimization problem. A terminal relaxation strategy was then proposed to mitigate numerical infeasibility induced by rigid terminal constraints, thereby guaranteeing the solvability of successive subproblems. Through the integration of affine variable transformations and successive linearization techniques, the original nonconvex problem was systematically converted into a second-order cone programming (SOCP) formulation, with theoretical equivalence between the relaxed and original problems established under well-justified assumptions. Furthermore, a heuristic initial trajectory generation scheme was devised, and the solution was obtained via a sequential convex programming (SCP) algorithm. Numerical simulation results demonstrated that the proposed method effectively satisfies strict path constraints, successfully generates feasible midcourse guidance trajectories, and exhibits strong computational efficiency and robustness. Additionally, a systematic comparison was conducted to evaluate the impact of different interpolation methods and discretization point quantities on algorithm performance.https://www.mdpi.com/2226-4310/12/7/618convex optimizationmidcourse guidancedual-channel controlsequential convex programmingsecond-order cone programming
spellingShingle Jiong Li
Jinlin Zhang
Jikun Ye
Lei Shao
Xiangwei Bu
Optimal Midcourse Guidance with Terminal Relaxation and Range Convex Optimization
Aerospace
convex optimization
midcourse guidance
dual-channel control
sequential convex programming
second-order cone programming
title Optimal Midcourse Guidance with Terminal Relaxation and Range Convex Optimization
title_full Optimal Midcourse Guidance with Terminal Relaxation and Range Convex Optimization
title_fullStr Optimal Midcourse Guidance with Terminal Relaxation and Range Convex Optimization
title_full_unstemmed Optimal Midcourse Guidance with Terminal Relaxation and Range Convex Optimization
title_short Optimal Midcourse Guidance with Terminal Relaxation and Range Convex Optimization
title_sort optimal midcourse guidance with terminal relaxation and range convex optimization
topic convex optimization
midcourse guidance
dual-channel control
sequential convex programming
second-order cone programming
url https://www.mdpi.com/2226-4310/12/7/618
work_keys_str_mv AT jiongli optimalmidcourseguidancewithterminalrelaxationandrangeconvexoptimization
AT jinlinzhang optimalmidcourseguidancewithterminalrelaxationandrangeconvexoptimization
AT jikunye optimalmidcourseguidancewithterminalrelaxationandrangeconvexoptimization
AT leishao optimalmidcourseguidancewithterminalrelaxationandrangeconvexoptimization
AT xiangweibu optimalmidcourseguidancewithterminalrelaxationandrangeconvexoptimization