Determination of pulse signal radiation sources with known coordinates in the radio ether

The way for determination of presence of sources of radiation of pulse signals (SRPS) with known co-ordinates in the air by means of a three-position small-base passive system for measurements of differences of times of a signal arrival (TDOA method) is developed. On the basis of simple ratios between co-ordinates of system reception centers and the purpose, following from geometry of their mutual disposition, analytical expressions for highly informative (with the big relation parameter/interference) determinations of a difference of differences of times of a signal arrival and the adaptive criterion fixing with certain accuracy a true value of inclined range to the purpose, are received. Mathematical modeling is carried out at various trajectories of a target movement and laws of distribution of errors of measurement of differences of times of a signal arrival.