Method and system to separate optically measured coupled parameters

A system, comprising:

• at least a first optical sensor disposed within or on a physical or cyber physical subsystem and sensitive to a parameter of interest, Parameter 1, and sensitive to one or more confounding parameters, including Parameter2 and Parameter3;
• one or more second optical sensors disposed within or on the subsystem, each second optical sensor sensitive to one or more of the confounding parameters;
• measurement circuitry configured to measure light scattered by the first optical sensor and each of the second optical sensors;
• and
• compensation circuitry configured to determine the compensation factors for each of the confounding parameters based on measurements of the light scattered by the first optical sensor and each of the second optical sensors, wherein:
• the measurements are taken over multiple load/unload cycles of the subsystem and the compensation circuitry minimizes an objective function to determine the compensation factors, or
• the measurements are taken over one or more cycles that span a range of values of each of the confounding parameters and the compensation circuitry determines generalized ratios of measurements obtained from the first optical sensor to measurements obtained from one or more of the second optical sensors to determine the compensation factors.