Title: Navigation system - Wikipedia
Headings: Navigation system
Navigation system
Types of navigation systems
See also
References

Content: 229-241. ^ Paul D. Groves (1 April 2013). Principles of GNSS, Inertial, and Multisensor Integrated Navigation Systems, Second Edition. Artech House. ISBN 978-1-60807-005-3. ^ a b "Who Needs GPS? The Forgotten Story of Etak's Amazing 1985 Car Navigation System". Fast Company. June 6, 2015. Retrieved December 22, 2020.