1. A method for synchronizing location finding measurements in a wireless network, comprising: receiving transmissions from at least one transmitter at multiple receivers, wherein said multiple receivers are located at predetermined locations with respect to said at least one transmitter; determining actual times-of-arrival of said received transmissions in response to said receiving; first computing differences between said actual times-of-arrival for said multiple receivers to determine actual time-differences-of-arrival for pairs of said multiple receivers; second computing differences between said actual time-differences-of-arrival and theoretical time-differences-of-arrival determined in conformity with said predetermined locations; estimating error in timebases of said multiple receivers in conformity with said second computed differences; and correcting measurements of other time-differences-of-arrival of other transmissions in conformity with said estimated error.