TEMPORAL SYSTEMATIC-ERRORS USING STATIONARY HADAMARD ENCODING MASKS

Temporal systematic errors result from the use of a stationary Hadamar d encoding mask in a Hadamard transform spectrometer when the time bet ween encodements is made too short relative to the mask response time. These errors have been characterized and an empirical method has been developed to correct for the resulting artifacts appearing in the spe ctra. It is then possible to operate the Hadamard transform spectromet er with a shorter data acquisition time. Typical examples are presente d and discussed.