This paper presents an extension to the ACAS X collision avoidance algorithm to multirotor aircraft capable of using speed changes to avoid close encounters with neighboring aircraft. The ACAS X family of algorithms currently use either turns or vertical maneuvers to avoid collision. We present a formulation of the algorithm in two dimensions that uses horizontal plane accelerations for resolut...

Autonomous motion planning addresses the problem of nding collision-free paths for moving objects robots among obstacles. In this report we consider robots operating in workspaces occupied by stationary, completely known obstacles. We describe a new approach to probabilistic roadmap planners (PRMs). The overall theme of the algorithm, called Lazy PRM, is to minimise the number of collision chec...

The collision of energetic gas phase particles with adsorbed species can induce a variety of processes. Events of this kind can play an important role in the mechanisms governing heterogeneous catalysis at high pressures and elevated temperatures. Two collision induced processes (CIP) are described in this article. The first process discussed is collision induced desorption (CID). The CID of N2...

A summary of the entire scope of the Kansas State University AMO program is contained in the J. R. Macdonald Laboratory abstract. The present document is limited to a discussion of recent progress in the MOTRIMS projects. MOTRIMS, or magneto optical trap recoil ion momentum spectroscopy, is a methodology originally developed for the study of ion-atom or photon-atom collisions. Following the bas...

This paper focuses on a fuzzy logic based intelligent decision making system that aims to improve the safety of marine vessels by avoiding collision situations. It can be implemented in a decision support system of an oceangoing vessel or included in the process of autonomous ocean navigation. Although Autonomous Guidance and Navigation (AGN) is meant to be an important part of future ocean nav...

In the framework of the large extra dimensions (LED) model, the effects of LED on the processes γγ → tt̄h0 and e+e− → tt̄h0 at future linear colliders are investigated in both polarized and unpolarized collision modes. The results show that the virtual Kaluza-Klein (KK) graviton exchange can significantly modify the standard model expectations for these processes with certain polarizations of ini...

We investigate the accuracy of and assumptions underlying the numerical binary Monte Carlo collision operator due to Nanbu [K. Nanbu, Phys. Rev. E 55 (1997) 4642]. The numerical experiments that resulted in the parameterization of the collision kernel used in Nanbu’s operator are argued to be an approximate realization of the Coulomb–Lorentz pitchangle scattering process, for which an analytica...

In a clustered wireless sensor network, multiple accesses at a time lead to collision. This could cause retransmit of lost packets. It increases power consumption, decreases sensor lifetime and delay in packet transmission. Basically sensors are not always need to send data. Suppose if an event occurs, then every sensor automatically accesses their base station simultaneously. It causes multipl...

Conflict detection is the process by which potential collisions between aircraft are identified. Developing efficient detection methods is an engineering priority since the prevention of a mid-air collision is a major safety constraint for all airspace design. Proximity between two aircraft each flying with instantaneous uniform straight motion is re-examined. The Apollonius theorem for constru...