Realtime Correlation Calculation for Distance Measurement Using Spread Spectrum Ultrasonic Waves
نویسندگان
چکیده
منابع مشابه
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...
متن کاملSpread 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...
متن کاملComputerized Kymograph for Muscle Contraction Measurement Using Ultrasonic Distance Sensor
Kymograph is a device to record the magnitude of physiological variables, such as: muscle contraction. However, we observe some lacks of the conventional kymographs, such as: result’s visualisation and accuracy. Hence, we propose a computerized-kymograph which can automatically measure, record, and display graphical data of muscle contraction on the computer by using ultrasonic distance sensor....
متن کاملDetection of Spread Spectrum Transmissions Using Fluctuations of Correlation Estimators
A method for detection of a Direct-Sequence Spread Spectrum (DS-SS) communication hidden in the noise is proposed. Indeed, DS-SS signals are well-known for their low probability of interception: their statistics are similar to the statistics of a noise, and, furthermore, they are usually transmitted below the noise level. The proposed method is based on the uctuations of autocorrelation estima...
متن کاملCross-Correlation by Single-bit Signal Processing for Ultrasonic Distance Measurement
Ultrasonic distance measurement using the pulse-echo method is based on the determination of the time of flight of ultrasonic waves. The pulse-compression technique, in which the cross-correlation function of a detected ultrasonic wave and a transmitted ultrasonic wave is obtained, is the conventional method used for improving the resolution of distance measurement. However, the calculation of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Transactions of the Society of Instrument and Control Engineers
سال: 2010
ISSN: 0453-4654,1883-8189
DOI: 10.9746/sicetr.46.357