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is not viable, hence the clocks differ, then applying the measurement as a two ways travel to the receiver and mirrored back to the transmitter compensates for some of the phase differences between the oscillators involved. This concept is applied with the
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Seminar "Security in mobile communication", which was held at the
Communication Security (COSY) Group at the Ruhr-University Bochum, Germany
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An introductory description of the concept is given with. In contrast to some faulty explanations, the concept may be applied as well with
41:) is the absolute time instant when a radio signal emanating from a transmitter reaches a remote receiver. The time span elapsed since the
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Two-way ranging is a cooperative method for determining the range between two radio transceiver units. When synchronisation of the
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of the network base station with the locating reference stations is important. This synchronization can be done in different ways:
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With exact synchronous clock on both sides. Inaccuracy in the clock synchronization translates directly to an imprecise location.
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Information technology -- Real Time
Locating Systems (RTLS) -- Part 5: Chirp Spread Spectrum (CSS) at 2,4 GHz air interface
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103:; data from a third base station is required to resolve the precise position to a single point. TDOA techniques such as
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Absolute time instant when a radio signal emanating from a transmitter reaches a remote receiver
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Without direct synchronisation, but with compensation of clock phase differences,
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Via measurement to or triggering from a common reference point.
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RTLS For
Dummies by Ajay Malik, Wiley New York 2009
107:use the measured time difference between TOAs.
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186:CSS as with IEEE 802.15.4aUWB modulation.
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170:(RTLS) concept as defined in the
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126:With two signals which have
99:will narrow a position to a
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85:true-range multilateration
61:Time difference of arrival
18:Time difference of arrival
168:real-time locating system
111:Ways of synchronization
172:international standard
174:ISO/IEC FCD 24730-5.
290:Radio geopositioning
251:Funknetzwerke daheim
91:travel with a known
43:time of transmission
285:Wireless locating
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196:Angle of arrival
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274:Categories
217:References
178:Literature
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190:See also
93:velocity
206:Ranging
89:signals
280:Radio
75:Many
71:Usage
138:and
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51:ToT
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