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Monday, July 27, 2020 | History

2 edition of digital fast Fourier transform spectrometer for radio astronomy. found in the catalog.

digital fast Fourier transform spectrometer for radio astronomy.

Alan Robert Morgan

digital fast Fourier transform spectrometer for radio astronomy.

by Alan Robert Morgan

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  • 11 Currently reading

Published by University of Manchester in Manchester .
Written in English


Edition Notes

Thesis (Ph.D.), University of Manchester, Department of Physics and Astronomy.

ContributionsUniversity of Manchester. Department of Physics and Astronomy.
The Physical Object
Pagination211p.
Number of Pages211
ID Numbers
Open LibraryOL16576501M

An 8 GHz digital spectrometer for millimeter-wave astronomy. The APEX digital Fast Fourier Transform Spectrometer. for the needs of spectral-line radio and (sub)millimeter astronomy: Fast. A Fourier-transform (FT) spectrometer generates the spectrum of its source radiation by modulating the radiation in the time domain through interference, which is then Fourier , a general overview of its operation is presented. The figure below shows the main components of an FT spectrometer and illustrates the overall process in obtaining the spectrum.

Bernd Klein, Sabine Philipp, Rolf Güsten, Ingo Krämer, Dorothea Samtleben Proc. SPIE. , Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III KEYWORDS: Astronomy, Clocks, Spectrometers, Fourier transforms, Field programmable gate arrays, Spectral resolution, Data conversion, Analog electronics, Galactic astronomy. A Calibrated Digital Sideband Separating Spectrometer for Radio Astronomy Applications to the number of channels of the fast Fourier transform (FFT). When C1 to C4 are chosen carefully, one can not only In a digital spectrometer, the bandwidth is normally limited by the maximum ADC or by the logic (FPGA) clock speed.

Microwave remote sensing of stratospheric trace gases using digital Fast Fourier Transform spectrometers for radio and millimeter astronomy. digital FFT spectrometer is used for the. A bestselling classic reference, now expanded and updated to cover the latest instrumentation, methods, and applications The Second Edition of Fourier Transform Infrared Spectrometry brings this core reference up to date on the uses of FT-IR spectrometers today. The book starts with an in-depth description of the theory and current instrumentation of FT-IR spectrometry, with full chapters.


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Digital fast Fourier transform spectrometer for radio astronomy by Alan Robert Morgan Download PDF EPUB FB2

The continuous Fourier transform is important in mathematics, engineering, and the physical sciences. Its counterpart for discretely sampled functions is the discrete Fourier transform (DFT), which is normally computed using the so-called fast Fourier transform (FFT).The DFT has revolutionized modern society, as it is ubiquitous in digital electronics and signal processing.

27 June A new generation of spectrometers for radio astronomy: fast Fourier transform spectrometer. Bernd Fast Fourier Transform Spectrometer (FFTS). possibility to directly digitize the down-converted intermediate-frequency signal of coherent radio receivers and to Fourier transform the digital data stream into a power spectrum in Cited by: Usually the DFT is computed by a very clever (and truly revolutionary) algorithm known as the Fast Fourier Transform or FFT.

The FFT was discovered by Gauss in and re-discovered many times since, but most people attribute its modern incarnation to James W. Cooley and John W. A new generation of spectrometers for radio astronomy: Fast Fourier Transform Spectrometer Bernd Klein, p, Rolf G˜usten, Ingo Kr˜amer and Dorothea Samtleben Max-Planck-Institut f˜ur Radioastronomie, Auf dem H˜u Bonn, Germany ABSTRACT.

A broadband FFT spectrometer for radio and millimeter astronomy A.O. Benz1, P.C. Grigis1, digital Fourier transform becomes competitive with autocor-relation. It is more efficient if under certain conditions the Fast Fourier Transform (FFT) algorithm can be implemented.

For the same computing power, it then allows for more chan. We present a new generation of very flexible and sensitive spectrometers for radio astronomical applications: Fast Fourier Transform Spectrometer (FFTS). The rapid increase in the sampling rate of commercially available analog-to-digital converters (ADCs) and the increasing power of field programmable gate array (FPGA) chips has led to the technical possibility to directly digitize the down Cited by: lab and fi rst results of a Fast Fourier Transform (FFT) spectrometer are described.

It is based on a commercially available fast digital sampler (UA) with an on-board Field Programmable Gate Array (FPGA). The spectrometer works continuously and has an un-precedented total bandwidth of 1 GHz, resolved into channels. The data. Klein et al.: High-resolution wide-band Fast Fourier Transform spectrometers a first fully digital Fast Fourier Transform spectrometer (t hough at that time limited to just 2×50MHz bandwidth and (1k) spectral channels).

Only shortly later, the rapid advances in digi-tal signalprocessing(DSP) hardwaremadeit possible to develop. Fourier Analysis – Expert Mode. Revisit Fourier Transform, FT properties, IQ sampling, Optionally, Implement a simple N-point Fast Fourier Transform.

Use the gnuradio FFT block and filters from the previous exercise to build a spectrometer. Intruduction to Polyphase filterbanks as an added upgrade to the spectrometer. A Radio Telescope.

GNURadio-FFTS Documentation, Release Personal background I am a bachelor student at Chalmers University of Technology in Sweden and have been, part time, developing a new spectrometer solution for Radio Astronomy and Aeronomy.

I am currently pursuing a degree in Master of Wireless and Space Engineering and eventually a Phd. 4 Chapter Size: 1MB. Astronomy & Astrophysics GREAT: early science results Special feature Letter to the Editor High-resolution wide-band fast Fourier transform spectrometers B.

Klein1,2, S. Hochgürtel1,ämer1,1,1, and R. Güsten1 1 Max-Planck-Institut für Radioastronomie, Auf dem Hü Bonn, Germany e-mail: [email protected] the needs of spectral-line radio and (sub)millimeter astronomy: Fast Fourier Transform Spectrometers (FFTS), which are in operation at the Atacama Pathnder EXperiment (APEX) telescope.

FFTS for APEX is a novel high-resolution 2 1GHz bandwidth digital spectrometer backend. Abstract. We have developed a digital fast Fourier transform spectrometer made of an analog-to-digital converter (ADC) and a field-programmable gate array (FPGA). The base instrument has independent ADC and FPGA modules, which allow us to implement different spectrometers in a relatively easy by: 1.

W4D: Fast Fourier Transform Spectrometer 1 Fast Fourier Transform Spectrometer B. Klein, I. Krämer, S. Hochgürtel, R. Güsten, A. Bell, K. Meyer, and V. Chetik Abstract—We review the development of our digital broad-band Fast Fourier Transform Spectrometers (FFTS). In just a few years, FFTS back-ends - optimized for a wide range of radio.

Fourier Analysis in Radio Astronomy: A Spectrometer. You now have the tools necessary to create the digital signal processing for a Spectrometer for a radio telescope. A spectrometer: Separates the incoming radio signal into individual frequency components (breaks it into individual cosine wave amplitudes and phases at each frequency).

The core architecture, tests in the lab and first results of a Fast Fourier Transform (FFT) spectrometer are described. It is based on a commercially available fast digital sampler (AC) with an on-board Field Programmable Gate Array (FPGA). A calibrated digital sideband separating spectrometer for radio astronomy applications Ricardo Finger 1,2, Patricio Mena2, finite impulse response filter followed by a pipeline Fast Fourier Transform.

The pipeline FFT is an In a digital spectrometer the bandwidth is. We review the development of our digital broad-band Fast Fourier Transform Spectrometers: FFTS. In just a few years, FFTS back-ends – optimized for a wide range of radio astronomical applications – have become a new standard for heterodyne re-ceivers, particularly in the mm and sub-mm wave-length range.

They offer high instantaneous band. Context. We present the technology and first scientific results of a new generation of very flexible and sensitive spectrometers, well-suited for the needs of spectral-line radio and (sub)millimeter astronomy: Fast Fourier Transform Spectrometers (FFTS), which are in operation at the Atacama Pathfinder EXperiment (APEX) telescope.

Aims. The FFTS for APEX is a novel Cited by: A new generation of spectrometers for radio astronomy: Fast Fourier Transform Spectrometer Article (PDF Available) in Proceedings of SPIE - The International Society for Optical Engineering.

We review the development of our digital broad-band Fast Fourier Transform Spectrometers (FFTS). In just a few years, FFTS back-ends -optimized for a wide range of radio astronomical applications.The book concludes by discussing digital methods, with particular attention to the Fast Fourier Transform and its implementation.

This new edition has been revised to include new and interesting material, such as convolution with a sinusoid, coherence, the Michelson stellar interferometer and the van Cittert-Zernike theorem, Babinet's principle Cited by: "A new generation of spectrometers for radio astronomy: Fast Fourier Transform Spectrometer",Proc.

of the SPIE, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III. Vol.pp. [SPIE Digital Library].