Over the horizon radar (OTH) system and method
AssigneeThe University of Birmingham
InventorsPaul Cannon, Matthew Angling
Life of this patent
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Abstract
A method for implementing a relocatable Over-The-Horizon-Radar (OTHR) including transmitting mutually orthogonal signals on each of a plurality of antenna elements of a transmitting system, and receiving and decoding the signals at a plurality of receiving systems to synthesize beams from the orthogonal signals. Each receiving system has a plurality of antenna elements fewer in number than the plurality of antenna elements of said transmitting system. The method includes connecting as a network the transmitting system, the plurality of receiving systems, and a network controller.
Claims13
A method for implementing a relocatable Over-The-Horizon-Radar (OTHR) comprising:
- transmitting mutually orthogonal signals on each of a plurality of antenna elements of a transmitting system,
- receiving and decoding the orthogonal signals at a plurality of receiving systems to synthesize beams from the orthogonal signals, each receiving system having a plurality of antenna elements fewer in number than the plurality of antenna elements of said transmitting system,
- determining a target elevation and azimuth relative to the transmitting system from the synthesized beams, and
- connecting as a network the transmitting system, the plurality of receiving systems, and a network controller,
- wherein said transmitting comprises determining one or more transmit frequencies for the mutually orthogonal signals by minimizing an optimum frequency cost function to identify which one or more transmit frequencies cause the mutually orthogonal signals to propagate to a target and to a maximal number of said receiving systems, and
- wherein the plurality of antenna elements of each receiving system comprises between one and ten antenna elements;
- and
- wherein one or more of the plurality of receiving systems is a mobile, land-based receiving system.
A relocatable over-the-horizon-radar (OTHR) system comprising:
- a transmitting system having an antenna comprising a plurality of antenna elements;
- a plurality of receiving systems each having a plurality of antenna elements fewer in number than the plurality of antenna elements of said transmitting system;
- a network controller;
- and
- a frequency management system;
- wherein the transmitting system is configured to transmit mutually orthogonal signals on each antenna element,
- wherein the frequency management system is configured to determine one or more transmit frequencies for the mutually orthogonal signals by minimizing an optimum frequency cost function to identify which one or more transmit frequencies cause the mutually orthogonal signals to propagate to a target and to a maximal number of said receiving systems;
- wherein the plurality of receiving systems is configured to decode the orthogonal signals to synthesize beams and to determine a target elevation and azimuth relative to the transmitting system from the synthesized beams, and
- wherein the transmitting system, the plurality of receiving systems and the network controller are networked together,
- wherein the plurality of antenna elements of each receiving system comprises between one and ten antenna elements;
- and
- wherein one or more of the plurality of receiving systems is a mobile, land-based receiving system.
Dependencies are inferred from the claim text.