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Item type:Publication, WLAN Localization Measurement and Analysis Using RSS and TOA Positioning Methods(2018-07-02); Wireless local area network (WLAN) has been exclusively research due to its widely used applications. Its operate frequency spectrum is in the ISM band and regulated in IEEE 802.11 family. Localization is one of the application which able to used WLAN signal. Its can be used in various applications such as logistics, security, disaster rescue operation tracking, and military service. Since the various kind of its applications is work in indoor environment, the indoor localization requires high accuracy. The receive signal strength (RSS) and time of arrival (TOA) are a parameter that used in the comparison between min-max technique and trilateration technique in this paper. In the measurement of this research, the frequency bandwidth is ranging from 2.3 GHz to 2.5 GHz, an access point is used to represent both of transmit antenna and receive antenna. The cumulative distribution function (CDF) is used for study the most accuracy.1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, UWB transmission measurement and modeling for indoor localization(2017-02-21); Southisombat, PhonepaseuthThe UWB is one wireless technology for indoor localization has been extensively researched in short range system because of its various applications. It can be used in firefighters tracking, logistics and military service. This system requires high accuracy in an indoor environment. In this paper evaluate and comparison between Trilateration and Min-Max localization techniques using received signal strength (RSS) and time of arrival (TOA) parameters. This study based on the ultra-wideband (UWB) transmission model for an indoor localization. The vector network analyzer (VNA) was used to measurement and recorders at FCC frequency band from 3.1 GHz to 10.6 GHz. Using the biconical antennas were used as both transmitter (Tx) and receiver (Rx) antennas. The accuracy and precision are also studies in the term of distance error. The cumulative distribution function (CDF) of distance error of each case is shown. From the results, the trilateration technique using TOA parameters very good accuracy. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Evaluation of ultra wideband indoor localization with trilateration and min-max techniques(2016-09-06); Kingsakda, VongkeoUWB indoor localization has been extensively researched because of its various applications. It can be used in firefighters tracking, logistics and military service. This system requires high accuracy in an indoor environment. In this paper the comparison between trilateration and min-max localization techniques using received signal strength (RSS) and time of arrival (TOA) parameters. This study based on the indoor localization using ultra wideband (UWB) transmission model. The vector network analyzer (VNA) was used to measure at the frequency ranging from 3 GHz to 11 GHz. The biconical antennas were used as both transmitter (Tx) and receiver (Rx) antennas. The accuracy and precision are also studies in the term of distance error. The cumulative distribution function (CDF) of distance error of each case is shown. From the results, the trilateration technique using TOA parameter has the most accuracy. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Selective removal of mercury as HgCl42- from natural gas well produced water by TOA via HFSLM(2010-01-07)1