Method and apparatus for mapping and similar applications
Navigational and collision avoidance apparatus
Communication system and method
Distance measuring method and apparatus
Passive method and apparatus for radar locating and parasitic surveilance
Direction finding and ranging system for locating scanning emitters
ApplicationNo. 07/095365 filed on 09/08/1987
US Classes:342/458, Distance342/442Having a phase detector
ExaminersPrimary: Blum, Theodore M.
Assistant: Sotomayor, John B.
Attorney, Agent or Firm
International ClassesG01S 11/00 (20060101)
G01S 11/02 (20060101)
AbstractA passive radar ranging system having an antenna system for receiving radiated electromagnetic energy emanating from an emitter source, plus a translation resolution system and a digital computation system for making phase measurements of the received electromagnetic energy with the translated and resolved energy signals being operated upon by a plurality of system spacing parameters, the radiated energy being modulated in a particular pattern, randomly modulated or unmodulated and with the emitter source being fixed or moving while the phase measurements are made from a single measurement platform which may also be fixed or moving with respect to the emitter source, the phase measurements being employed for determining the instantaneous range from the emitter source to the measurement platform.