Multidimensional signals such as the spectral images allow us to have deeper insights into
the natures of objects. In this paper the spectral imaging techniques that are based on …

We have developed 1-GHz bandwidth digital spectro-correlator system for the Nobeyama
Millimeter Array (NMA). It consists of 2Gsample/sec-2bit analog-to-digital (A/D) converters …

This lecture presents the general concepts of correlation and spatial coherence functions, as
they apply to correlator implementations for synthesis-imaging arrays. A uniform treatment …

We established a FFX algorithm for correlation process in radio astronomy. We developed
the FFX correlator hardware for the verification of the FFX scheme algorithm, and …

Radio astronomers developed a digital spectro-correlator to obtain the power spectrum of
astronomical objects for the studies of their spectral lines. The degital spectro-correlator has …

Nobeyama Millimeter Array Page 1 Nobeyama Millimeter Array URSI General Assembly,
Montreal Canada August 25, 2017 Masato Ishiguro Page 2 Japanese radio astronomy started …

Many of the early advances in the field of digital signal processing were involved with the
development of techniques for detecting or enhancing a signal buried in a noise …

CALIFORNIA STATE UNIVERSITY, NORTHRIDGE OCTAVE-SPACED SPECTRUM ANALYSIS
USING DISCRETE FOURIER TRANSFORMS A graduate project sub Page 1 CALIFORNIA …

We report the feasibility study of a high-dispersion FX correlator for ALMA second-
generation correlator. This FX correlator always realizes both super-high spectral-resolution …

We present high resolution millimeter, near-infrared, and optical data on the Wolf-Rayet
nucleus of the Liner NGC 6764. The millimeter 12 CO (1–0) maps were obtained using the …