Performance Enhancement and Evaluation in Hadamard Transform Spectrometers

해더마드 트랜스폼 스펙트로미터의 성능 증진 방법과 평가

  • Park, Jin-Bae (Dept. of Electrical Engineering, Yonsei University) ;
  • Kim, Hyun-Kyu (Dept. of Electrical Engineering, Yonsei University)
  • Published : 1993.07.18

Abstract

When the noise is mainly caused by a detector and is statistically independent of the incident radiation, the multiplexing inherent in the Hadamard transform (HT) spectrometer can provide an improved spectrum-estimate. A spectrum-estimate can be further improved when any nonidealities in the system are compensated. In this research, three spectrum-estimation methods for an HT spectrometer having a nonideal mask are discussed in terms of computational efficiency, statistical bias, the sources of error, and the mean-square error associated with a given estimate. In addition, the results obtained from computer simulations are used to verify the theoretical foundation of each method.

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