Abstract: A passive self-determined position fixing system for use by aircraft and other users such as sea-going vessels utilizes a directional radar in combination with an omnidirectional radar facility to produce a directional radar beam and simultaneous omnidirectional radar transmission. A television type broadcast facility provides a broadcast of the PPI display of the directional radar system. The directional radar pulse signals together with the omnidirectionally retransmitted radar pulse signals are processed by the position fixing system aboard the host aircraft or the like to determine range information. A display system such as a conventional television receiver responds to the broadcast PPI display to produce a similar display within the host aircraft. The position fixing system combines the PPI type display together with the information with the directional and omnidirectional radar transmissions to identify the user or host aircraft or vessel upon the PPI type display.