Zhaohui Dang
YOU?
Author Swipe
View article: In-Orbit Optimal Safe Formation Control for Surrounding an Unknown Huge Target with Specific Structure by Using Relative Sensors Only
In-Orbit Optimal Safe Formation Control for Surrounding an Unknown Huge Target with Specific Structure by Using Relative Sensors Only Open
The issue of in-orbit optimal safe surrounding control for service satellite (SSat) formation against a huge unknown target satellite (TSat) with specific structures is solved by using relative measurements only, and an optimal cooperative…
View article: Bayesian Networks Based Health Assessment for Inertial Sensors of Drag-Free Satellites
Bayesian Networks Based Health Assessment for Inertial Sensors of Drag-Free Satellites Open
This paper presents a real-time health assessment model for inertial sensors in drag-free satellites, utilizing Bayesian networks. Initially, a working model of the inertial sensor system for drag-free satellites is developed. Typical faul…
View article: Nonlinear Dynamics Model of DFACS with Two Test Masses for Heliocentric Space Gravitational Wave Detection Mission
Nonlinear Dynamics Model of DFACS with Two Test Masses for Heliocentric Space Gravitational Wave Detection Mission Open
This paper conducts a comprehensive study on the nonlinear dynamic modeling of the two test masses Drag-Free and Attitude Control System (DFACS) for heliocentric gravitational wave detection missions. First, the composition of DFACS and th…
View article: Delta-V-Based Cooperative Strategies for Orbital Two-Pursuer One-Evader Pursuit–Evasion Games
Delta-V-Based Cooperative Strategies for Orbital Two-Pursuer One-Evader Pursuit–Evasion Games Open
This paper investigates the application of the Nash equilibrium solution method within 2-versus-1 impulsive orbital pursuit–evasion (P-E) scenarios, involving 2 pursuers and an evader. Through the integration of game theory and coordinated…
View article: Blocking Geosynchronous Orbits: Analysis of Deployment and Mission Capability
Blocking Geosynchronous Orbits: Analysis of Deployment and Mission Capability Open
This paper addresses the blocking problem against a satellite attempting a geostationary or geosynchronous transfer. Calculation and optimization methods based on reachable domain and Lambert interception are designed for the case of in-pl…
View article: Intention Recognition of Space Noncooperative Targets Using Large Language Models
Intention Recognition of Space Noncooperative Targets Using Large Language Models Open
This study proposes a novel method for intention recognition of space noncooperative targets using large language models (LLMs). Traditional methods rely on motion data to assess orbital motion intentions but cannot infer operation and tas…
View article: Nash-equilibrium strategies of orbital Target-Attacker-Defender game with a non-maneuvering target
Nash-equilibrium strategies of orbital Target-Attacker-Defender game with a non-maneuvering target Open
This study investigates the orbital Target-Attacker-Defender (TAD) game problem in the context of space missions. In this game, the Attacker and the Defender compete for a Target that is unable to maneuver due to its original mission const…
View article: A review on DFACS (II): Modeling and analysis of disturbances and noises
A review on DFACS (II): Modeling and analysis of disturbances and noises Open
This paper presents Part II of a review on DFACS, which specifically focuses on the modeling and analysis of disturbances and noises in DFACSs. In Part I, the system composition and dynamics model of the DFACS were presented. In this paper…
View article: A review on DFACS (I): System design and dynamics modeling
A review on DFACS (I): System design and dynamics modeling Open
The Drag -Free and Attitude Control System (DFACS) is a critical platform for various space missions, including high precision satellite navigation, geoscience and gravity field measurement, and space scientific experiments. This paper pre…
View article: Optimal Impulsive Rendezvous for Approaching Geostationary Earth Orbit Targets with Terminal Configuration Constraints
Optimal Impulsive Rendezvous for Approaching Geostationary Earth Orbit Targets with Terminal Configuration Constraints Open
This paper explores multi-impulse trajectory design for approaching Geostationary Earth Orbit (GEO) targets, emphasizing the attainment of a 2:1 elliptical relative orbit for close inspection. The intricate optimization challenge includes …
View article: Game Tree Search-based Impulsive Orbital Pursuit–Evasion Game with Limited Actions
Game Tree Search-based Impulsive Orbital Pursuit–Evasion Game with Limited Actions Open
This paper focuses on the impulsive orbital pursuit–evasion game (OPEG) with limited action sets for the pursuer and evader. Initially, a mathematical model is developed by combining game theory and orbital dynamics, forming a finite-round…
View article: Multiple fault isolation method for micro thrusters of drag-free systems
Multiple fault isolation method for micro thrusters of drag-free systems Open
This paper proposes a multiple fault isolation framework for micro thrusters of drag-free systems, based on the minimum number of isolation filters. Based on the consideration of fault isolatability, the original system is reasonably divid…
View article: Optimal impulsive rendezvous for highly elliptical orbits using linear primer vector theory
Optimal impulsive rendezvous for highly elliptical orbits using linear primer vector theory Open
In this paper, minimum-fuel rendezvous is investigated for the case in which the reference orbit is highly elliptic. To this end, the well-known Tschauner-Hempel equations are used to describe the relative motions between rendezvous spacec…
View article: A parametric design method of nanosatellite close-range formation for on-orbit target inspection
A parametric design method of nanosatellite close-range formation for on-orbit target inspection Open
This paper proposes an efficient design method for nano satellites formation flying near a large space target to perform ultra-close inspection missions. A parametric model for periodic relative motion between two satellites is firstly pro…
View article: Orbital Blocking Game Near Earth–Moon <i>L</i> <sub>1</sub> Libration Point
Orbital Blocking Game Near Earth–Moon <i>L</i> <sub>1</sub> Libration Point Open
This paper explores the blocking capabilities of a spacecraft deployed near Earth–Moon L 1 libration point against another spacecraft attempting lunar gravity assist, based on the Δ V required for interception. The study demonstrates that …
View article: Models and Strategies for <i>J</i> <sub>2</sub> -Perturbed Orbital Pursuit–Evasion Games
Models and Strategies for <i>J</i> <sub>2</sub> -Perturbed Orbital Pursuit–Evasion Games Open
This paper discusses the modeling and solving of orbital pursuit–evasion games (OPEGs) under J 2 perturbation. The optimal long-range maneuver method under J 2 perturbation is designed, and it is proved that the effect of eccentricity can …
View article: Machine learning-based solution of Kepler’s equation
Machine learning-based solution of Kepler’s equation Open
In this study, an analytical solution of elliptical Kepler's equation, which gives the position of a celestial body moving in orbit as a function of time, is designed by using artificial intelligence techniques. For the eccentric anomaly, …
View article: Fast guidance method of lunar landing based on dynamic programming
Fast guidance method of lunar landing based on dynamic programming Open
In this paper, a novel multi-stage trajectory transfer and fixed-point landing time optimal guidance method for the lunar surface emergency rescue mission is proposed. Firstly, the whole process motion and dynamics model for the lunar surf…