Topic
Guidance system
About: Guidance system is a research topic. Over the lifetime, 4282 publications have been published within this topic receiving 45964 citations.
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10 Dec 2002
TL;DR: In this paper, the formation control of a fleet of ships is investigated by using vectorial backstepping to solve two subproblems; a geometric task, and a dynamic task.
Abstract: This paper investigates formation control of a fleet of ships. The control objective for each ship is to maintain its position in the formation while a (virtual) Formation Reference Point (FRP) tracks a predefined path. This is obtained by using vectorial backstepping to solve two subproblems; a geometric task, and a dynamic task. The former guarantees that the FRP, and thus the formation, tracks the path, while the latter ensures accurate speed control along the path. A dynamic guidance system with feedback from the states of all ships ensures that all ships have the same priority (no leader) when moving along the path. Lyapunov stability is proven and robustness to input saturation is demonstrated using computer simulations.
192 citations
TL;DR: In this paper, a two-dimensional path following control system for autonomous marine surface vessels is presented, which is obtained through a way-point guidance scheme based on line-of-sight projection algorithm and the speed controller is achieved through state feedback linearization.
192 citations
TL;DR: A uniform semiglobal exponential stability (USGES) proof for a class of proportional line-of-sight (LOS) guidance laws used for vehicle path-following control used for marine craft and aircraft motion control systems.
191 citations
TL;DR: It is shown how the target can lure in the attacker, allowing its defender to intercept the attacking missile even in scenarios in which the defender's maneuverability is at a disadvantage compared with the attacking ballistic missile.
Abstract: Optimal-control-based cooperative evasion and pursuit strategies are derived for an aircraft and its defending missile. The aircraft-defending missile team cooperates in actively protecting the aircraft from a homing missile. The cooperative strategies are derived assuming that the incoming homing missile is using a known linear guidance law. Linearized kinematics, arbitrary-order linear adversaries' dynamics, and perfect information are also assumed. Specific limiting cases are analyzed in which the attacking missile uses proportional navigation, augmented proportional navigation, or optimal guidance. The optimal one-on-one, noncooperative, aircraft evasion strategies from a missile using such guidance laws are also derived. For adversaries with first-order dynamics it is shown that depending on the initial conditions, and in contrast to the optimal one-on-one evasion strategy, the optimal cooperative target maneuver is either constant or arbitrary. These types of maneuvers are also the optimal ones for the defender missile. Simulation results confirm the usefulness and advantages of cooperation. Specifically, it is shown how the target can lure in the attacker, allowing its defender to intercept the attacking missile even in scenarios in which the defender's maneuverability is at a disadvantage compared with the attacking missile.
185 citations
Patent•
30 May 2002
TL;DR: In this article, a distributed navigation and route guidance system using networked computing devices is described, where the location of a navigable object is sensed and communicated to associated navigation components in a communication network.
Abstract: The present invention provides for distributed navigation and route guidance using networked computing devices. A computing device may host one or more navigation functional components (103, 105, 106, 107, 108, and 109). The location of a navigable object (101) is sensed and communicated to associated navigation components in a communication network. The navigation component (103, 105, 106, 107, 108, and 109) collectively provide guidance information to a navigable object controller (102) A navigable object controller (102) interacts with the distributed navigation system through an interface (105), which provides the appropriate presentation of guidance information and functions for the particular type of navigable object controller (e.g. human-machine interface, or system to system). The present invention provides the structures and methods for a flexible navigation and guidance system supporting a variety of network capabilities and computing devices using the same software implementation.
185 citations