Time of arrival (TOA or ToA) is the absolute time instant when a radio signal emanating from a transmitter reaches a remote receiver. The time span elapsed since the time of transmission (TOT or ToT) is the time of flight (TOF or ToF). Compared to the TDOA technique, TOA techniques uses the absolute time of arrival ( possibly biased) at a certain base station rather than the measured time difference between departing from one and arriving at the other station. The  distance can be directly calculated from the time of arrival as signals travel with a known velocity. Time of arrival data from two base stations will narrow a position to a position circle; data from a third base station is required to resolve the precise position to a single point. Many radiolocation systems, including GPS, use ToA . See also Angle of arrival GSM localization Multilateration Ranging Triangulation Trilateration
Time of arrival (TOA or ToA) is the absolute time instant when a radio signal emanating from a transmitter reaches a remote receiver. The time span elapsed since the time of transmission (TOT or ToT) is the time of flight (TOF or ToF). Time difference of arrival ( TDOA) is the difference between TOAs. Usage Many radiolocation systems use TOA measurements to perform geopositioning via true-range multilateration. The true range or distance can be directly calculated from the TOA as signals travel with a known velocity. TOA from two base stations will narrow a position to a position circle; data from a third base station is required to resolve the precise position to a single point. TDOA techniques such as pseudorange multilateration use the measured time difference between TOAs . See also Angle of arrival GSM localization Ranging Triangulation
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Compared to the TDOA technique, TOA techniques uses the absolute time
Time difference
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possibly biased) at a certain base station rather than the measured time difference between departing from one and arriving at the other station. The
TDOA) is the difference between TOAs.
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Usage Many radiolocation systems use TOA measurements to perform geopositioning via true-range multilateration. The true range or
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time of arrival
TOA
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Time of arrival data
TOA
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Many radiolocation systems, including GPS, use ToA
TDOA techniques such as pseudorange multilateration use the measured time difference between TOAs
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Multilateration Ranging Triangulation Trilateration
Ranging Triangulation