Conditions of Distance Measurements Method Implementation in Multi-Position Passive Systems

This paper presents the possibility of using a pseudo-distance method (PDM) for determining the radio radiation source (RRS) of coordinates in multi-position passive systems. The main advantages of multi-position passive systems are reached by processing of information, received in the separated points of space. Advantage of proposed method in comparison with the range-difference method (RD) is an estimation of time of emission of RRS signal in a scale of receiving stations. Features of transition from PRM to distance-measurement method (DM) under condition of an estimation of the period of emission of radio signals are resulted. Results of modeling of various methods are shown and the advantage of modified in accuracy determination of coordinates of RRS in comparison with RD is shown. Advantages of PDM usage in areas with a large value of horizontal delusion of precision (HDOP) are presented. Expediency of the period of emission filtration for greater accuracy is presented.