GPS-based automatic target reporting and finding network and components
Patent 5502446 Issued on March 26, 1996. Estimated Expiration Date: 
May 2, 2014. 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.
May 2, 2014. 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.Patent ReferencesVehicle location system Differential GPS landing assistance system GPS integrated ELT system SATPS mapping with angle orientation calibrator Position locating transceiver Patent #: 5414432 InventorAssigneeApplicationNo. 236638 filed on 05/02/1994US Classes:342/357.08, Determining relative position (e.g., distance or direction)342/352, Including a satellite342/357.09, With transmission of location-indicative information to or from a remote station455/12.1Space satelliteExaminersPrimary: Tarcza, Thomas H.Assistant: Phan, Dao Attorney, Agent or FirmInternational ClassG01S 005/02AbstractA GPS emergency rescue network comprising at least one GPS receiver and L2-frequency transmitter combination for a target, and a GPS receiver able to tune the L2 frequency transmissions of the target's transceiver. A constellation of orbiting GPS satellites transmit their range information on two carrier frequencies, L1 and L2, and are differentiated from the survivor's L2-frequency transmissions by unique pseudo-random number codes in the spread spectrum code multiple access scheme that is otherwise conventional. | |
