In an undated picture, a mock-up of the A-12 spy plane sits perched upside down on a testing pylon at Area 51-part of radar tests to reveal revealed how visible, or invisible, the design was to radar.

In this paper the visualization of radar detection range is discussed and the implementation method of the 3d visualization of radar maximum detection range is given.

A convenient and visual way was found to instant measure frequency via effect of acoustooptic deflection, making solution to the conventional radar carrier frequency measurement.