In this paper, utilization of clustering algorithms for data fusion in decision level is proposed. The results of automatic isolated word recognition, which are derived from speech spectrograph and Linear Predictive Coding (LPC) analysis, are combined with each other by using fuzzy clustering algorithms, especially fuzzy k-means and fuzzy vector quantization. Experimental results show that the...

The 2.5m Isaac Newton Telescope(INT) is currently being used to carry out a major multi-colour, multi-epoch, CCD based wide field survey over an area of ∼100deg 2. The survey parameters have been chosen to maximise scientific return over a wide range of scientific areas and to complement other surveys being carried out elsewhere. Unique aspects of the survey is that it concentrates on regions o...

We describe a concept for an imaging spectrograph for a large orbiting observatory such as NASA’s proposed Next Generation Space Telescope (NGST) based on an imaging Fourier transform spectrograph (IFTS). An IFTS has several important advantages which make it an ideal instrument to pursue the scientific objectives of NGST. We review the operation of an IFTS and make a quantitative evaluation of...

Introduction: An advanced brassboard (ADBB) of the Mars Miscrobeam Raman Spectrometer [1,2,3,4] is being developed. The probe (Figure 1) and spectrograph have been redesigned with improved optics and the electronics have been miniaturized. The modified optical design in the probe and spectrograph provides better spectral resolution than the previous model and enables the probe design to be more...

Due to its simultaneous deep imaging and integral field spectroscopic capability, an Imaging Fourier Transform Spectrograph (IFTS) is ideally suited to the Next Generation Space Telescope (NGST) mission, and offers opportunities for tremendous scientific return in many fields of astro-physical inquiry. We describe the operation and quantify the advantages of an IFTS for space applications. The ...

Due to its simultaneous deep imaging and integral field spectroscopic capability, an Imaging Fourier Transform Spectrograph (IFTS) is ideally suited to the Next Generation Space Telescope (NGST) mission, and offers opportunities for tremendous scientific return in many fields of astrophysical inquiry. We describe the operation and quantify the advantages of an IFTS for space applications. The c...

IRIS (InfraRed Imaging Spectrograph) is a first light instrument presently being developed for the Thirty Meter Telescope (TMT). IRIS will include an integral field spectrograph and an imaging camera, covering wavelengths from 0.84 μm to 2.4 μm (infrared range). IRIS will work with the Narrow-Field Infrared Adaptive Optics System (NFIRAOS), achieving an unprecedented angular resolution [1], cre...

We describe a multi-order spectrograph concept suitable for 8m-class telescopes, using the intrinsic spectral resolution of Superconducting Tunneling Junction detectors to sort the spectral orders. The spectrograph works at low orders, 1–5 or 1–6, and provides spectral coverage with a resolving power of R≃ 8000 from the atmospheric cutoff at 320 nm to the long wavelength end of the infrared H o...