A hybrid location finding technique based on time difference of arrival (TDOA) with round-trip time (RTT) measurements is proposed for a wideband code division multiple access (WCDMA) network. In this technique, a mobile station measures timing from at least three base stations using user equipment receive–transmit (UE Rx– Tx) time difference and at least three base stations measure timing from...

tethered aerostat balloons that operate at altitudes up to 10,000 feet above mean sea level. • A 180,000-pound mobile mooring station and tether system is used to launch, recover, and secure each aerostat system. The aerostat tether system provides radar control and data transfer links to supporting ground control and data processing stations. JLENS is deployable to pre-planned operational site...

Mobile robotic telepresence (MRP) systems incorporate video conferencing equipment onto mobile robot devices which can be steered from remote locations. These systems, which are primarily used in the context of promoting social interaction between people, are becoming increasingly popular within certain application domains such as health care environments, independent living for the elderly, an...

Advancement in wireless communication technology and portable computing devices such as wireless handhelds, Personal Digital Assistants (PDA) and other mobile information terminals have led to a revolutionary change in our information society towards the era of mobile computing. The ubiquitous access to a variety of digital devices and multimedia tools makes it possible to create, analyze, synt...

PROBLEM An average of three workers a year are killed in surface mining operations when a piece of haulage equipment collides with another smaller vehicle or a worker on foot. Another three workers are killed each year when haulage equipment backs over the edge of a dump point or stockpile. Devices to monitor the blind areas of mining equipment are needed to provide a warning to operators when ...

During the last decade, mining companies and mobile equipment manufacturers have pursued improved efficiency, productivity, and safety in underground mining operations by automating some of the functions of underground vehicles. This paper describes the implementation and successful field testing of a new infrastructureless guidance system for autonomous tramming of centre-articulated undergrou...

mobile commerce is whatever electronic transfer or transaction via a mobile modem through a mobile net in which the true value or advance payment is done for goods, services or information. a mobile payment system should be beneficial for all related persons. for a payment system to be a successful system, end-user, seller, exporter and operators should see a additional value in it. end-user pr...

This paper evaluates the reliability of information system for identifying mobile devices by IMEI code (International Mobile Equipment Identifier). A is presented, which includes a database that accessible both locally and remotely. The allows collecting, storing, processing about all imported into country used in country. Indicators calculating are selected. Only server hardware with software ...

The aim of the study. Expanding approaches to predicting consequences interaction mobile agricultural and logging equipment with working environment in order reduce operational risks increase efficiency.

Natural disasters and emergencies create the need for communication between and among the affected populace and emergency responders as well as other parties such as governmental agencies and aid organizations. Such communications include the dissemination of key information such as evacuation orders and locations of emergency shelters. In particular, the coordination of efforts between respond...