In this paper, we propose a new chaos-based communication scheme using the observers. The novelty lies in the masking procedure that is employed to hide the confidential information using the chaotic oscillator. We use a combination of the addition and inclusion methods to mask the information. The performance of two observers, the proportional observer (P-observer) and the proportional integra...

Off-road navigation in forest environments is a challenging problem field robotics. Rovers are required to infer their traversability over priori unknown and dynamically changing terrain using noisy onboard sensors. The compounded for small-sized rovers, such as that of swarm. Their size-proportional low-viewpoint affords them restricted view navigation, which may be partially occluded by veget...

Problems like windup or rollover arise in a PI controller working under saturation. Hence antiwindup schemes are necessary to minimize performance degradation. Similar situation may occur in a Proportional Resonant (PR) controller in the presence of a sustained error input. Several methods can be employed based on existing knowledge on PI controller to counter this problem. In this paper few su...

Effects of sea-level rise (SLR) on future peak water levels in tidal deltas and estuaries are largely unknown, despite these areas being densely populated at high risk flooding. While the rates SLR accelerate, many channels simultaneously experience channel deepening for navigation. With globally decreasing sediment supplies, most becoming deeper when rate accelerates sedimentation cannot keep ...

Objective – This study aims to measure library users’ perceptions of the quality information control using LibQual, a survey instrument that measures minimum perceived and desired levels service across three dimensions: Effect Service, Library as Place, Information Control. Numerous studies LibQual have emphasized aspect, while has received less attention. Previous reported low in academic libr...

Due to the high reliance of daily activities on Global Navigation Satellite System (GNSS), its security is one major concerns for research and industry. Most navigation mobile-driven location-based services use GNSS render services. low power easy access signals, these signals are vulnerable spoofing other types attacks. Recently many attacks have been identified in road- maritime-based environ...

For the precise positioning applications it is important to determine and eliminate error introduced by various sources such as ionosphere. To develop a standalone navigation system, India has launched seven satellite constellations for NavIC (Navigation with Indian Constellation) system which can provide precision over surrounded landmass. Since ionospheric delay depends on frequency of signal...

25­ INTRODUCTION The key objective of this article is to provide a broad conceptual foundation with respect to homing guidance but with sufficient depth to adequately support the articles that follow. During guidance analysis, it is typical to assume that the missile is on a near-collision course with the target. The implications of this and other assumptions are discussed in the first section,...