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Systems and methods for determining the position of a device or vehicle by using celestial information captured by an imaging apparatus. The systems and methods identify a star set in the celestial information, generate a star set fingerprint and compare the star set fingerprint with reference celestial information.

The presently disclosed method and system exploits a received signal strength of a jamming signal emitted by a jammer to allow navigation of an object through an area containing the jamming signal.

A spoofing detection device is provided. The spoofing detection device includes an antenna configured to receive a signal from wireless communication; a processor configured to extract at least one feature of the received signal; a storage configured to store a local signal feature; a detection circuit configured to compare the extracted feature from the received signal and the local signal feature.