Method for locating a radio frequency emitter

Details Method for locating a radio frequency emitter Method for locating a radio frequency emitter

1988-05-18

1989-11-21

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Position indicating

342398, G01S 302

Patent

active

048825905

ABSTRACT:
A radio frequency emitter transmits pulses in a regular swept beam pattern. As a result of this regular pattern, the angles of transmission of the pulses can be inferred. Intervisibility data of terrain points in a region around an observation point are stored in computer memory. At the observation point, measurements are made of the times of arrival of a plurality of terrain point reflections of a single pulse transmitted by the emitter. These measurements are repeated for a plurality of pulses transmitted by the emitter. In a computer, a comparison is made of the terrain points of reflection calculated from the measured times of arrival for assumed emitter locations with the stored intervisibility data of terrain points.

REFERENCES:
patent: 4746924 (1988-05-01), Lightfoot

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