Various techniques that employ Global Positioning System(GPS) signals such as A-GPS and GPS transmitters, have been introduced with the hope to provide a solution for indoor positioning detection. Indoor positioning system (IPS) is a term that is used for network devices used to wirelessly locate objects or people inside building. The study is based on the issue in order to determine the position of an object in indoor environment or inside a building. The problems arise when the position of an object inside a building cannot be determined using GPS. We proposed the implementation of trilateration technique to determine the position of users in indoor areas based on Wi-Fi signal strengths from access points (AP) within the indoor vicinity. In this paper, percentage of signal strengths obtained from Wi-Fi analyzer in a smartphone were converted into distance between users and each AP. A user's indoor position could then be determined using a formula proposed based on trilateration technique.
Disaster struck does not announce itself and people usually caught with the ad hoc situation. Disaster is divided into two types which are natural disasters and man-made disasters. Natural disasters happen because of a natural phenomenon or process such as earthquakes, tsunamis, typhoons and others. Manmade disasters happen as a consequence of technological or human hazards such train accident, traffic collision, aviation incident (plane crash), structural collapse and others. Such disaster struck events may cause fixed network infrastructure to be partially or fully-destroyed.
*Author for correspondenceThe deployment of the fixed network infrastructure will be almost impossible to be re-established and recovered within a short time, especially in remote area where one had never existed.During the disaster struck, two entities would be existed which are victims and rescue teams like firefighters, police, volunteers and medical teams. The communication network is vital, especially after the disaster struck as the rescue teams need to coordinate the Search and Rescue (SAR) operations and mission critical. The real-life situation can remain unknown to the rescue teams involved in the SAR operations or it can be totally different from what it was before the disaster due to the damages. Subsequently, the exchange of data on the latest condition at the disaster area plays a big part and is crucial to save lives and
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.