Robust autopilot design for bank-to-turn (BTT) missiles under disturbances and uncertainties is investigated in this paper using the disturbance observer concept. It is well known that the BTT missile dynamics undergo a substantial changes during its flight. In this disturbance observer based control setting, the influences caused by parameter variations are merged into disturbance terms and re...

1'~ experimental investigation of the wake behind a Meteor 4 EL?XW&Z has beon carried out, and theory used wherever possible to confirm a& ater.d the results &tamed. Xea~urements ehw that for the conditions oovered in these tests, the jet velocity has fallen to a negligible value by about 200-300 ft behinil the jet exrt. The act muld oe tiqected to persist Longest under take-o~cf conditims alth...

It is well-known that the multiple sliding surface control was developed to eliminate the problem of ‘‘explosion of complexity’’ inherent in the celebrated backstepping method. In this paper, we extend the multiple sliding surface control method further for systems in nonlinear block controllable form. As an application of the proposed control scheme, the robust attitude control law was synthes...

In this paper, we propose a nonlinear guidance law for missiles against maneuvering targets. First, we derive the equations of motion described in the line-of-sight reference frame and then we define the equilibrium subspace of the nonlinear system to guarantee target interception within a finite time. Using Sontag’s formula, we derive a nonlinear guidance law that always delivers the state to ...

The equations of motion of a missile under the air drag effects are constructed. The modified TD88 is surveyed. Using Lagrange’s planetary equations in Gauss form, the perturbations, due to the air drag in the orbital elements, are computed between the eccentric anomalies of the burn out and the reentry points Ebo, 2π −Ebo , respectively. The range equation is expressed as an infinite series in...

Enclosed weapon bays on modern aircraft interfere with prelaunch, Flight Termination System verification during training test launches. Range safety personnel need to verify the functionality of the flight termination system prior to missile launch. The missile telemetry RF is highly attenuated when the aircraft missile bay doors are closed, limiting the range for which the aircraft can fly dur...

Cross-eye jamming is an on-board ECM technique that may potentially be applicable to platform self-protection against missiles that employ fully active radars. This paper explores one aspect of amplitude-modulated cross-eye jamming in missile defense. In this analysis, the seeker in the missile is assumed to contain a monopulse tracking antenna and an exact monopulse processor. It will be seen ...

Cruise missile can be classified as a smart bomb and also Unmanned Aerial Vehicle (UAV) due to its ability to move and manoeuvre by itself without a pilot. Cruise missile flies in constant velocity in cruising stage. Malaysia is one of the consumers of cruise missiles that are imported from other nations, which can have distinct geographic factors including their local terrains compared to Mala...

This paper addresses the problem of how to produce reliable software that is also flexible and cost effective for the DoD distributed software domain. DoD software systems fall into two categories: information systems and war fighter systems. Both types of systems can be distributed, heterogeneous and network-based, consisting of a set of components running on different platforms and working to...