Study on Data Fusion Algorithm of Active and Passive Radars
Xiu Jian · Systems engineering and electronics · 2001
Data fusion problem of active and passive radars is studied in this paper. Since only angle measurement can be used in passive radar, the range state of a target is unobservable when the relative acceleration between the target and the passive radar is zero. If angle measurement is only used in data association, when there are two or more targets in the same direction, the correct association probability between active and passive radars is low. In the paper, a pseudo-range measurement method is presented to estimate the range measurement of passive radar. So both range measurement and angle measurement can be used in data association, and a data association algorithm in Cartesian coordinates is also given. The simulation results show that the correct association probability between the active and passive radars is high by using the method discussed in the paper. \;