NASA NTRS · 20170002901
Systems and Methods for Locating a Target in a GPS-Denied Environment
Abstract
A system for locating an object in a GPS-denied environment includes first and second stationary nodes of a network and an object out of synchronization with a common time base of the network. The system includes one or more processors that are configured to estimate distances between the first stationary node and the object and a distance between the second stationary node and the object by comparing time-stamps of messages relayed between the object and the nodes. A position of the object can then be trilaterated using a location of each of the first and second stationary nodes and the measured distances between the object and each of the first and second stationary nodes.
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Murdock, Ronald G., Mackay, John D., Cummins, Douglas A.. 2017-03-28. Systems and Methods for Locating a Target in a GPS-Denied Environment. https://ntrs.nasa.gov/citations/20170002901
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