The auto-spectrum is attached to linear phase,the amplitude-frequency drawing is got according to the arithmetic of bi-spectrum,then the equivalent is educed,the conversion relation is attained.

Based on vector-spectrum method,the concept of vector amplitude-frequency figure and vector waterfall figure is established.

The traditional amplitude-frequency charactenistic curve monitoring method only taking note to the first-rank inherent freauency has been modified into a new method taking note to the multi-rank frequency.

Analysis of mappable unit in horizontal stereogram and its studies on calculating drawing method;

On the basis of analysis of sterical view, the maximum mappable unit in sterical view on a fixed viewpoint is studied According to the sterical projective principle, a series of formulas have been deducted with diagrams so as to obtain a directdrawing of maximum mappable unit in sterical vie