ecently a special Independent Research and Development project demonstrated that translator-based differential Global Positioning System (GPS) measurements can achieve a measurement accuracy of 2 cm in realistic missile intercept test environments. The project was initiated in recognition of a serious need an effective precision analysis capability for use in evaluating engagements and lethalit...

This paper develops a framework to determine the performance or reliability of a complex system. We consider a case study in missile reliability that focuses on the assessment of a high fidelity launch vehicle intended to emulate a ballistic missile threat. In particular, we address the case of how to make a system assessment when there are limited full-system tests. We address the development ...

A new kind of adaptive backstepping method is proposed for simplified missile model of pitch channel with time-varying and uncertain parameters. Backstepping control is an effective method for coping with system uncertainties. Adaptive method is integrated with backstepping method and a Lyapunov function is constructed to guarantee the whole system is stable. Through the theoretical analysis an...

A CASE OF CYSTIC TUMOUR; OPERATION. By G. D. MacReddie, Esq., Civil Surgeon, Uurdui. Jhubba Thakook, aged 35 years, was admitted into the Hurdui Dispensary on the 9th December, 1872, with a soft tumour, the size of an orange, at the back of the right elbow joint. He stated that eighteen years ago he received a bullet in his arm; a cicatrix about two inches higher up on the posterior aspect of t...

In missile guidance system, to reduce the interception “miss distance,” it is important to choose a suitable guidance law and navigation constant. This paper investigates and compares the system behavior of guidance laws under different navigation constants. Based on use of the adjoint technique, miss distance sensitivity analyses which consider the system noise, target step maneuver, initial h...

A novel now commonly used device in many countries called a "weed-wacker" is a mechanical rotating device with a cord used to trim lawns and grass. A case of a 14-year old boy with a false aneurysm of the brachial artery is presented; he sustained a missile injury by a piece of rusty steel projected by use of a weed wacker. Missile injuries by nail guns and bullets have been documented in the l...

In summer 2000, the Clinton administration is scheduled to decide whether to authorize deployment by the United States of a limited national missile defense (NMD) system. This date arose from a “3+3” policy announced in the midst of the 1996 election campaign: under it, the administration would conduct research and development on missile defenses until 2000, then decide whether to proceed to a ...

A new approach to guiding a swarm of missiles using an on-line evolutionary algorithm to optimise the flight paths is introduced. The missiles are flown via intermediate points which are adjusted dynamically by the evolutionary algorithm, then towards the point of impact with the target, thus altering the trajectory shape. Evolutionary algorithms are robust global optimisation techniques and ar...

In this paper the communication mechanisms of a missile engagement simulator are modelled and analysed. The simulator is developed as a testing platform for missile guidance and control algorithms. The simulation uses concurrency and remote execution concepts to enhance performance. Coloured Petri nets are a well suited formal approach for modelling and analysis of these concepts. Design/CPN is...

The TENA SDA has developed and validated a common architecture called TENA, which provides for real-time software system interoperability using the TENA Middleware, as well as interfaces to existing range assets, C4ISR systems, and simulations. The TENA Middleware, currently at Release 6.0.3, has been used by the range community for testing, evaluation, and feedback in many major exercises sinc...