Emitter location system
First Claim
Patent Images
1. A system for locating an emitter emitting a radio frequency signal in a radio field, the system comprising:
- a movable receiver capable of detecting and recording an amplitude of the radio frequency signal from a plurality of locations within radio field;
means for generating a grid of points representing an area of interest within the radio field;
means for calculating the distance between each of the grid points and the plurality of receiver locations;
means for calculating an expected signal strength for each of the grid points based on an assumed power and radiation efficiency of the emitter; and
means for generating a prediction of the location of the emitter.
2 Assignments
0 Petitions
Accused Products
Abstract
Described herein is a system and method for detecting the position of a remote emitter (1) where the emitter (1) is emitting a radio frequency signal (2) in a radio field (3). The system and method uses at least one receiver (4) which is moveable within the environment of the radio field (3), each receiver (4) measuring and recording the amplitude of the radio frequency signal (2) and recording its precise location using a GNSS or GPS receiver. The data recorded is processed and compared to data predicted by the receiver(s) (4) to estimate a location of remote emitter (1).
-
Citations
8 Claims
-
1. A system for locating an emitter emitting a radio frequency signal in a radio field, the system comprising:
-
a movable receiver capable of detecting and recording an amplitude of the radio frequency signal from a plurality of locations within radio field; means for generating a grid of points representing an area of interest within the radio field; means for calculating the distance between each of the grid points and the plurality of receiver locations; means for calculating an expected signal strength for each of the grid points based on an assumed power and radiation efficiency of the emitter; and means for generating a prediction of the location of the emitter. - View Dependent Claims (2, 3, 4)
-
-
5. A method of locating the position of an emitter emitting a radio frequency signal in a radio field, the method comprising the steps of:
-
(a) positioning a receiver in the radio field; (b) recording the amplitude of the emitted signal at the receiver location; (c) recording the receiver location; (d) repositioning the receiver at a second location; (e) recording the amplitude of the emitted signal at the second receiver location; (f) recording the receiver location; (g) generating a grid of points representing an area of interest within the radio field; (h) calculating the distance between each of the grid points and the receiver locatios; (i) calculating an expected signal strength for each of the grid points based on an assumed power and radiation efficiency of the emitter; and (j) generating a prediction of the location of the emitter. - View Dependent Claims (6, 7)
-
-
8. A computer program product comprising program code means stored on a computer readable medium for performing the following method steps when the program is run on a computer and/or other processing means associated with suitable recording and locating devices;
-
(a) positioning a receiver in the radio field; (b) recording the amplitude of the emitted signal at the receiver location; (c) recording the receiver location; (d) repeating steps (a) to (c) for a plurality of receiver locations in the radio field; (e) generating a grid of points representing an area of interest within the radio field; (f) calculating the distance between each of the grid points and receiver locations; (g) calculating an expected signal strength for each of the grid points based on an assumed power and radiation efficiency of the emitter; and (h) generating a prediction of the location of the emitter.
-
Specification