Peregrine: Network Navigation

Organization: MIT Lincoln Laboratory
Co-Developer(s): MIT Laboratory for Information and Decision Systems (LIDS)
Year: 2018

GPS signals don’t reach into all domains— indoors, under tree canopies, in urban canyons, underwater, and underground—where accurate navigation is critical. Furthermore, its accuracy is insufficient for many applications and in some circumstances GPS signals may be denied due to signal interference Peregrine: Network Navigation is a novel system for GPS-free navigation powered by cooperative algorithms that enables scalable, high-accuracy, efficient localization networks based on small, easily deployable devices. Unlike similar positioning systems, Peregrine leverages cooperative localization—where users assist in localizing one another—to significantly reduce infrastructure costs, improve positioning accuracy, and extend coverage. Peregrine devices make accurate measurements of distance between two devices through a process called ranging and use this information to update their global position estimate. Devices are deployed in a mix of fixed anchors at known locations and mobile users that require positioning as they move through the environment. While the Peregrine device is designed primarily for indoor navigation its novel navigation framework, named Network Localization and Navigation (NLN), forms a blueprint that could be applied other domains where GPS is not available.