Patent ID: 11953580
Assignee: THE UNIVERSITY OF BIRMINGHAM
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. 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.