X-Ray Pulsar Based Navigation
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High Quality Content by WIKIPEDIA articles! X-ray Pulsar-based Navigation and Timing (XNAV) is a navigation technique whereby the periodic X-ray signals emitted from pulsars are used to determine the location of a spacecraft in deep space. A spacecraft using XNAV compares received X-ray signals with a database of known pulsar frequencies and locations. Similar to GPS, this comparison allows the spacecraft to triangulate its position accurately. Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation. The observed periods of their pulses range from 1....
High Quality Content by WIKIPEDIA articles! X-ray Pulsar-based Navigation and Timing (XNAV) is a navigation technique whereby the periodic X-ray signals emitted from pulsars are used to determine the location of a spacecraft in deep space. A spacecraft using XNAV compares received X-ray signals with a database of known pulsar frequencies and locations. Similar to GPS, this comparison allows the spacecraft to triangulate its position accurately. Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation. The observed periods of their pulses range from 1.4 milliseconds to 8.5 seconds. The radiation can only be observed when the beam of emission is pointing towards the Earth. This is called the lighthouse effect and gives rise to the pulsed nature that gives pulsars their name.
