GPS relative position detection system
October 13, 2015. 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 References 3063048 Beacon tracking system Out-of-range personnel monitor and alarm Out-of-range personnel monitor and alarm Personal emergency locator system Position aided subscriber unit for a satellite cellular system Electronic direction finder Indicator apparatus for the recovery of skiers buried by avalanches Location monitoring system Positioning and displaying system InventorAssigneeApplicationNo. 542799 filed on 10/13/1995US Classes:342/357.08, Determining relative position (e.g., distance or direction)342/419PortableExaminersPrimary: Blum, Theodore M.Attorney, Agent or FirmInternational ClassesH04B 007/185G01S 005/02 AbstractA system of GPS devices which receive civilian GPS signals and provide an intuitive graphical interface for displaying the relative position of GPS devices in relation to each other, the relative position being accurate to several meters and defined as the distance to, direction of and height variance between GPS devices. A first GPS device with the person or object to be located transmits its GPS determined location to a second GPS device. This second GPS device includes a means for receiving the GPS determined position of the first GPS device, and also includes means for calculating the relative position of the first GPS device relative to the second GPS device based on a comparison of the received telemetry of the first GPS device and its own GPS determined position. The relative position of the first device is then graphically displayed on an interface of the second GPS device in a manner which eliminates the need for a map in order to travel to the location of the first GPS device. While providing an interface which displays a relative position of the first GPS device, this information remains accurate no matter how the orientation of the second GPS device changes with respect to a compass.Other References
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