| 摘要 |
FIELD: physics. ^ SUBSTANCE: apparatus and method for estimating velocity and Doppler frequency of a mobile station, involving obtaining a first set of measurement results of the time of arrival (TOA) of a signal from a first set of base stations at a first moment in time; obtaining a second and a third set of measurement results of the time of arrival (TOA) of the signal from second and third sets of base stations at a first and third moment in time; determining a set of range measurement results along a line of sight (LOS) using the first, second and third sets of TOA measurement results; determining a set of estimates of the velocity and a set of estimates of the angle of arrival (AOA) of the signal using the set of range measurement results along the LOS; determining a set of estimates of Doppler frequency using the set of estimates of velocity and set of estimates of AOA; and using a processor to determine the estimate of mean Doppler frequency on a set of sectors, wherein the first, second and third sets of TOA measurement results are obtained on the set of sectors. ^ EFFECT: improved method. ^ 30 cl, 12 dwg |
