Distance Measurement by Automatic Peak Detection for Indoor Positioning Using Spread Spectrum Ultrasonic Waves

Real-Time Distance Measurement for Indoor Positioning System Using Spread Spectrum Ultrasonic Waves

The fields of application for position information have been expanded along with developments in the information-driven society. Outdoor position information systems such as car navigation systems that use the global positioning system (GPS) have spread widely. On the other hand, indoor position information is also important for humans and robots for self-location and guided navigation along ro...

Spread Spectrum Ultrasonic Positioning System

Many mobile applications can be greatly enhanced when provided with the locations of people and devices. Indoor ultrasonic positioning system provide fine-grained position data for such applications. This paper describes an ultrasonic tagging system developed for monitoring the location of a moving target. Use of spread spectrum in ultrasonic location system allows the system to work at a noisy...

Ultrasonic Multiple-Access Ranging System Using Spread Spectrum and MEMS Technology for Indoor Localization

Indoor localization of persons and objects poses a great engineering challenge. Previously developed localization systems demonstrate the use of wideband techniques in ultrasound ranging systems. Direct sequence and frequency hopping spread spectrum ultrasound signals have been proven to achieve a high level of accuracy. A novel ranging method using the frequency hopping spread spectrum with fi...

Indoor Positioning Using Inertial Measurement Units

With the increase in the number of smart phone users worldwide there comes a high demand for smart phone based location systems. Within the project “Indoor positioning using inertial measurement units” an android application has been developed wherein the position of the smart phone user with respect to the floor environment is determined. This has been achieved using the smart phone sensors st...

Detection of UWB ranging measurement quality for collaborative indoor positioning