STAR - Multi-Reference Curve Fitting

Utilize multiple references to ensure accurate estimation of your modal parameters

The Advanced Curve Fitter of the STAR6 System™ is a special hybrid algorithm that uses Least Squares Complex Exponential (LSCE) and polynomial techniques to accurately estimate modal parameters on complex or redundant data sets. You can evaluate single reference, multireference, or MIMO data for increased flexibility in working with unique data sets.

A graphical user interface makes these advanced techniques accessible even to occasional users. For example, informative graphics help you identify single and repeated mode locations. You can choose from multiple mode indicator functions and refer to detailed stability or S plane diagrams.

The curve fitting process is fast because the Advanced Curve Fitter accommodates extremely large model sizes, enabling you to evaluate wide frequency bands for modes and repeated roots.

The STAR6 System™ has streamlined the Advanced Curve Fitter process, by eliminating the need to use the old Option menu to navigate through the ACF analysis. Mode Selection is fast and easy, select potential modes by clicking directly in the Stability Diagram display. No more pouring through the Potential Mode tables to make your selections. 

Compatibility With Conventional Spectrum Analyzers

The STAR6 System™ can conduct multireference analysis using most analyzers with two or more channels. You can use two channel analyzers to collect multiple reference data, one reference at a time. Or, you can use a multichannel analyzer with a roving impact hammer to acquire multiple references at the same time. The STAR6 System™ uses the data from these tests to produce the best possible estimate of the modal parameters.