Method for reducing the amount of data that is transmitted from the sensor devices to the processing centre of a Time-Difference-Of-Arrival locating system, whereby the locating system is used to obtain the unknown location of a radio frequency emitter, the method comprising the steps of: receiving the radio frequency signal of the emitter at the sensor devices of the locating system; at each sensor device obtaining a feature of the received signal that identifies the time of arrival of the received signal in a unique fashion; transmitting the obtained features from all sensor devices to the processing centre of the locating system; and at the processing centre calculating the unknown location of the radio frequency emitter using the obtained features of the times of arrival from all sensor devices; characterised in that the obtained feature of the received signal that describes the time of arrival of the received signal at each sensor device in a unique fashion is the times of occurrence of the maximum values in each segment of the autocorrelation function of the received signal, wherein the signal of the radio frequency emitter received at each sensor device is sampled with a suitable sampling frequency according to the sampling theorem and the autocorrelation function of the received signal is computed from the sampled signal, the autocorrelation function therefore being a discrete autocorrelation function; wherein the step of sampling the signals includes synchronizing the signal samples at the different sensor devices with a timing reference; and wherein the discrete autocorrelation function is computed for segments of the sampled signal, this procedure providing segments of the autocorrelation function, and the timing reference is also used for synchronizing the segments of the autocorrelation function. receiving the radio frequency signal of the emitter at the sensor devices of the locating system; at each sensor device obtaining a feature of the received signal that identifies the time of arrival of the received signal in a unique fashion; transmitting the obtained features from all sensor devices to the processing centre of the locating system; and at the processing centre calculating the unknown location of the radio frequency emitter using the obtained features of the times of arrival from all sensor devices; characterised in that the obtained feature of the received signal that describes the time of arrival of the received signal at each sensor device in a unique fashion is the times of occurrence of the maximum values in each segment of the autocorrelation function of the received signal, wherein the signal of the radio frequency emitter received at each sensor device is sampled with a suitable sampling frequency according to the sampling theorem and the autocorrelation function of the received signal is computed from the sampled signal, the autocorrelation function therefore being a discrete autocorrelation function; wherein the step of sampling the signals includes synchronizing the signal samples at the different sensor devices with a timing reference; and wherein the discrete autocorrelation function is computed for segments of the sampled signal, this procedure providing segments of the autocorrelation function, and the timing reference is also used for synchronizing the segments of the autocorrelation function.