RADIO INTERFEROMETRY
The signals from various readings produce a cross-correlation fringe pattern.
Figure 1 Three Fringe Patterns (
http://adswww.harvard.edu/books/hsaa/idx.html )Using aperture synthesis a radio image of an astronomical object can be produced.
Below are terms used in Radio Interferometry:
Figure 2 Terms used with Spectropolarimeter
And here is an image produced with Interferometric Methods:
Figure 3 Image produced by interferometric methods.
