UAVs are attracting more and more attentions for their versatilities and low costs. This paper focuses on their security and considers launching jamming attacks on them. We firstly formulate the UAVs jamming problem. Secondly the PSO (Particle Swarm Optimization) algorithm is introduced and new metrics like AJRL (Area for jamming a receiving link) and NJRL (Number of AJRLs) are defined. Then we...

A wireless network is vulnerable to jamming attacks since the network relies on open and shared wireless channels. Maintaining an acceptable level of network performance degradation has been an important problem in the wireless network. This paper studies a scheme for network performance optimization by exploiting dynamic rate control and multi-path routing in the wireless network under probabi...

--In this we address the dynamical jamming problem in wireless mesh networks and although some research has been conducted on countering Jamming attacks. Generally Multipath source routing protocols allow a data source node to distribute the total traffic among available paths. We consider the problem of jamming-aware source routing in which the source node performs traffic allocation based on ...

To suppress undesirable noise (jamming) associated with signals is important for many applications. Here we explore the idea of jamming suppression with realistic, aperiodic signals by stochastic resonance. In particular, we consider weak amplitude-modulated (AM), frequencymodulated (FM), and chaotic signals with strong, broad-band or narrow-band jamming, and show that aperiodic stochastic reso...

We consider the rheology of soft-core frictionless disks in two dimensions in the neighborhood of the athermal jamming transition. From numerical simulations of bidisperse, overdamped, particles, we argue that the divergence of the viscosity below jamming is characteristic of the hard-core limit, independent of the particular soft-core interaction. We develop a mapping from soft-core to hardcor...

A smart munition revolves by 2~3Hz when it flights. Before guidance starts, the roll estimation of a smart munition is an important factor to improve the navigation performance. The roll estimation algorithm is already known using IMU and GPS. But GPS can’t be available as a measurement under GPS jamming environment. This paper explains how to estimate the roll angle of a smart munition under j...

Many systems in nature exhibit transitions between fluid-like states and solidlike states, or “jamming transitions”. Such transitions can be induced by changing thermodynamic quantities, such as temperature or pressure (equilibrium transitions) or by changing applied stress (non-equilibrium transitions). There is a strong theoretical foundation for understanding equilibrium phase transitions th...

Spread spectrum techniques such as Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping (FH) have been commonly used for anti-jamming wireless communication. However, traditional spread spectrum techniques require that sender and receivers share a common secret in order to agree upon, for example, a common hopping sequence (in FH) or a common spreading code sequence (in DSSS). Such a re...

Jamming is defined as the act of intentionally directing electromagnetic energy towards a communication system to disrupt or prevent signal transmission. In the context of wireless sensor networks (WSNs), jamming is the type of attack which interferes with the radio frequencies used by sensor nodes and may be viewed as a special case of denial of service (DoS) attacks. Herein, we outline the po...

In this paper, we model and investigate the random access (RA) performance of sensor nodes (SN) in a wireless sensor network (WSN). In the WSN, a central head sensor (HS) collects the information from distributed SNs, and jammers disturb the information transmission primarily by generating interference. In this paper, two jamming attacks are considered: power and code jamming. Power jammers (if...