Disclosed herein are methods of analysis for unmixing non-linear, cross- reactive sensors and related system. Use of the disclosed methods, related systems and computer program product permits better analysis of the magnitud es of various stimulants including but not limited to chemical concentrations. One method may add one or more additional signal vectors to the sensor response before linearizing each channel. A second method may add one or mor e exponential terms to the response curve when using curve parameterization to unmix the sensor response. A third method may use non-linear iterative solutions that estimates an optical depth, linearizes the optical depth, solves for a correction to the estimated optical depth, and updates the optical depth. Also, the disclosed methods and related systems include combinations of the methods described herein.
ANALYSIS METHODS FOR UNMIXING THE RESPONSE OF NON-LINEAR, CROSS-REACTIVE SENSORS AND RELATED SYSTEM TO SINGLE AND MULTIPLE STIMULANTS