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Missile

About: Missile is a research topic. Over the lifetime, 12829 publications have been published within this topic receiving 94307 citations. The topic is also known as: guided missile & missiles.


Papers
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Journal ArticleDOI
TL;DR: In this paper, a linear quadratic guidance law for a missile with a time varying acceleration constraint is presented, which produces time varying gains that shape the missile's trajectory for avoiding no-capture zones.
Abstract: A linear quadratic guidance law for a missile with a time varying acceleration constraint is presented. By introducing the constraint into the running cost, the optimization produces time varying gains that shape the missile’s trajectory for avoiding no-capture zones. The guidance law is derived for a missile with high-order autopilot dynamics and a terminal intercept angle constraint against a maneuvering target. The acceleration constraint of aerodynamic steering missiles is usually trajectory dependent rather than time dependent. Transforming the constraint into a time-dependent function by analytical means might not be possible, due to the nonlinear nature of the constraint. The problem is alleviated using a simple iterative calculation. For practical implementation reasons, and in order to improve the guidance performance under model uncertainties and disturbances, the guidance command is decomposed into two separate optimizations: one for the acceleration constraint, for which the guidance gains are...

61 citations

Journal ArticleDOI
TL;DR: In this article, a method for estimating the distribution range of trajectories of missiles is presented on the basis of the tests results, and the effects of wind velocity profile, ascending flow, initial vertical reaction force and missile scale, which should be taken into account when the method is applied to actual cases, are examined by using calculated trajectory of two-dimensional models.

61 citations

Book
01 Jan 1991
TL;DR: Nolan as discussed by the authors argues that the use of missiles is a harbinger of the altered international security environment confronting the United States and its allies in the late twentieth century, and discusses the way in which domestic and international policy decisions are made to promote or restrain the export of military technology, and assesses the strengths and weaknesses of current policy.
Abstract: Since the beginning of the crisis precipitated by Iraq's invasion of Kuwait in August 1990, the threat posed by Iraq's arsenal of ballistic missiles has been the focus of international attention. In the opening days of the U.S.-led military counteroffensive beginning on January 16, 1992, Iraq launched ballistic missiles against population centers in Israel and military bases in Saudi Arabia. The attacks intensified the terror of the war and prompted renewed efforts by the multinational force to destroy Saddam Hussein's military machine. The countries aligned against Iraq were prepared for attacks by chemically armed missiles, but Iraq's missile force proved to be of little military consequence. The missiles that survived the opening hours of Operation Desert Storm were conventionally armed, inaccurate and unreliable. Most of those that were actually launched either were intercepted by American antimissile defenses or failed to hit vital targets. But the political impact of the missiles was inestimable. The strikes symbolized Iraq's determination to prosecute the war no matter what the cost. By threatening to involve Israel, they created severe tensions and posed the risk that multinational military coalition would be dissolved, and they underscored the potential vulnerability of all the states in the region to Iraqi aggression. In this book, Janne E. Nolan argues that the use of missiles is a harbinger of the altered international security environment confronting the Untied States and its allies in the late twentieth century. Long believed to be a distant prospect, the adoption of technological resources to missile development is already occurring in over a dozen developing countries, many of them long-standing regional antagonists. These capabilities present complicated challenges to American interests and foreign policy, challenges that have only begun to be explored as a result of the Iraqi crisis. The author examines the evolution of the international technology market, surveys third world missile programs, and analyzes the military significance of ballistic missiles in potential third world combat. She also discusses the way in which domestic and international policy decisions are made to promote or restrain the export of military technology, and assesses the strengths and weaknesses of current policy. Finally, she emphasizes the need for institutional reforms to balance the requirements of protecting the technological edge on which the United States relies for its own security against the growing pressures of international miniaturization.

60 citations

Journal ArticleDOI
TL;DR: Two minimum-time trajectories are developed for use as a time-to-go algorithm for a missile controlled by a linear-quadratic guidance law and give low miss distances for a wide range of intercept geometries including those with large off-boresight angles.
Abstract: Two minimum-time trajectories are developed for use as a time-to-go algorithm for a missile controlled by a linear-quadratic guidance law. The first algorithm is based on the minimum normal-acceleration-weighted final time trajectory for a constant speed missile, and the second algorithm is based on the minimum final time trajectory of an accelerating missile with bounded normal acceleration. Because the initial off-boresight angle is fixed, these algorithms are expected to work well for intercepts where large off-boresight angles occur. Both time-to-go algorithms are tested in a six-degree-of-freedom simulation of a bank-to-turn missile attacking a smart target, and their miss distances are compared with those obtained by time-to-go algorithms known as range over closing speed and accelerated range over closing speed. Both algorithms give low miss distances for a wide range of intercept geometries including those with large off-boresight angles. These results are substantially improved relative to those obtained with range over closing speed. However, the accelerated range over closing speed algorithm matches the minimum-time results and is the preferred algorithm because of its simplicity.

60 citations

Journal ArticleDOI
TL;DR: In this article, a sliding-mode control law is proposed to stabilize a class of uncertain nonlinear systems, where the saturation function is used to take its place in proposed controllers.
Abstract: Novel sliding-mode control laws are proposed in this paper to stabilize a class of uncertain nonlinear systems. Considering that the sign function, which is often used in the sliding-mode control can cause chattering of control input, the saturation function is used to take its place in proposed controllers. What is more, not only the proposed controllers are continuous but also convergence to the origin asymptotically and in finite time can both be guaranteed in theory. For asymptotic convergence, it is only required that uncertainties and disturbances are bounded and the bounds may be unknown by virtue of adaptive laws. The obtained results are then applied to partial integrated guidance and control design for a missile, completing desired terminal impact angle and hit-to-kill interception. Finally, simulations are conducted on the nonlinear longitudinal missile model and results demonstrate the effectiveness of the proposed method.

60 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20241
2023270
2022639
2021202
2020352
2019451