Method and apparatus for altering a region in the earth's atmosphere, ionosphere, and/or magnetosphere
Patent 4686605 Issued on August 11, 1987. Estimated Expiration Date: 
January 10, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 10, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.InventorAssigneeApplicationNo. 06/690333 filed on 01/10/1985US Classes:361/231, Modification of environmental electric charge244/158.1, SPACECRAFT380/59, MISCELLANEOUS89/1.11WAGING WARExaminersPrimary: Cangialosi, SalvatoreAttorney, Agent or FirmInternational ClassesH05H 1/02 (20060101)H05H 1/18 (20060101) F41G 7/20 (20060101) F41G 7/22 (20060101) F41H 13/00 (20060101) H01Q 1/36 (20060101) AbstractA method and apparatus for altering at least one selected region which normally exists above the earth's surface. The region is excited by electron cyclotron resonance heating to thereby increase its charged particle density. In one embodiment, circularly polarized electromagnetic radiation is transmitted upward in a direction substantially parallel to and along a field line which extends through the region of plasma to be altered. The radiation is transmitted at a frequency which excites electron cyclotron resonance to heat and accelerate the charged particles. This increase in energy can cause ionization of neutral particles which are then absorbed as part of the region thereby increasing the charged particle density of the region.Other References
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