System and method for allocating jamming energy based on three-dimensional geolocation of emitters
First Claim
1. A system for locating a plurality of emitters and transmitting jamming signals at said plurality of emitters within an area comprising:
- a receiver to receive signals transmitted by said plurality of emitters and obtain measurements of said received signals at a plurality of different locations within said area;
a processor to process said measurements to locate said plurality of emitters within said area, wherein said processor includes;
a location module to process said measurements and determine three-dimensional locations of said plurality of emitters within said area based on relationships of distances between said plurality of emitters and each of said plurality of locations, wherein said measurements are proportional to said distances; and
an emitter analysis module to determine an emitter type associated with each emitter and rank said plurality of emitters based on said emitter type and said three-dimensional locations of said plurality of emitters within said area; and
a transmitter to transmit said jamming signals at said plurality of emitters based on said three-dimensional locations of said plurality of emitters within said area, wherein said transmitter is configured to generate an amount of jamming energy, transmit sufficient energy from the amount of jamming energy at a first of the plurality of emitters and transmit remaining energy from the amount of jamming energy among remaining ones of the plurality of emitters, and wherein said transmitter transmits jamming signals at successive ones of said plurality of emitters in order of said rank until said jamming energy is exhausted.
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Accused Products
Abstract
According to an embodiment of the present invention jamming energy is allocated to a plurality of emitters based on a three-dimensional (3-D) emitter geolocation technique that determines the geolocation of radio frequency (RF) emitters based on energy or received signal strength (RSS) and/or time differences of arrival (TDOAs) of transmitted signals. The three-dimensional (3-D) emitter geolocations are used to rank emitters of interest according to distance and available radio frequency (RF) jamming energy is allocated to the emitters in rank order. The techniques may be employed with small unmanned air vehicles (UAV), and obtains efficient use of jamming energy when applied to radio frequency (RF) emitters of interest.
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Citations
28 Claims
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1. A system for locating a plurality of emitters and transmitting jamming signals at said plurality of emitters within an area comprising:
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a receiver to receive signals transmitted by said plurality of emitters and obtain measurements of said received signals at a plurality of different locations within said area; a processor to process said measurements to locate said plurality of emitters within said area, wherein said processor includes; a location module to process said measurements and determine three-dimensional locations of said plurality of emitters within said area based on relationships of distances between said plurality of emitters and each of said plurality of locations, wherein said measurements are proportional to said distances; and an emitter analysis module to determine an emitter type associated with each emitter and rank said plurality of emitters based on said emitter type and said three-dimensional locations of said plurality of emitters within said area; and a transmitter to transmit said jamming signals at said plurality of emitters based on said three-dimensional locations of said plurality of emitters within said area, wherein said transmitter is configured to generate an amount of jamming energy, transmit sufficient energy from the amount of jamming energy at a first of the plurality of emitters and transmit remaining energy from the amount of jamming energy among remaining ones of the plurality of emitters, and wherein said transmitter transmits jamming signals at successive ones of said plurality of emitters in order of said rank until said jamming energy is exhausted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 27)
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14. A method for locating a plurality of emitters and transmitting jamming signals at said plurality of emitters within an area comprising:
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(a) receiving signals transmitted by said plurality of emitters via a receiver and obtaining measurements of said received signals at a plurality of different locations within said area; (b) processing said measurements, via a processor, and determining three-dimensional locations of said plurality of emitters within said area based on relationships of distances between said plurality of emitters and each of said plurality of locations, wherein said measurements are proportional to said distances, and wherein step (b) further includes; (b.1) processing said measurements and determining three-dimensional locations of said plurality of emitters within said area; (b.2) determining an emitter type associated with each emitter; and (b.3) ranking said plurality of emitters based on said emitter type and said three-dimensional locations of said plurality of emitters within said area; and (c) transmitting said jamming signals at said plurality of emitters based on said three-dimensional locations of said plurality of emitters within said area, wherein transmitting includes transmitting sufficient energy from an amount of jamming energy at a first of the plurality of emitters, and transmitting remaining energy from the amount of jamming energy among remaining ones of the plurality of emitters, and wherein said jamming signals are transmitted at successive ones of said plurality of emitters in order of said rank until said jamming energy is exhausted. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28)
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Specification