Doppler Spectrum Analysis Using a Minicomputer

Doppler Spectrum Analysis Using a Minicomputer
Title Doppler Spectrum Analysis Using a Minicomputer PDF eBook
Author Raymond A. Greenwald
Publisher
Pages 70
Release 1972
Genre Doppler effect
ISBN

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This report describes the interfacing and programming of a minicomputer for Doppler spectrum analysis. The interfaces include analog-to-digital converters for data input and digital-to-analog converters for display of the Doppler spectra on an XY oscilloscope. These interfaces are contained in the computer chassis which has the dimensions of a suitcase. The software that is included in this report is specifically written for 64 point Doppler spectra. The Fast Fourier Transform algorithm is used in the analysis, and the time required to transform a 64 point array is 23 milliseconds. Control of the spectral analysis program is by means of 16 data switches on the front panel of the computer.

A Portable, Frequency-coherent Spectrum Analyzer for Radar Applications

A Portable, Frequency-coherent Spectrum Analyzer for Radar Applications
Title A Portable, Frequency-coherent Spectrum Analyzer for Radar Applications PDF eBook
Author Ben B. Balsley
Publisher
Pages 544
Release 1971
Genre Coherent radar
ISBN

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A VHF Transmitter and System Synchronizer for Use in a Portable Doppler Radar System

A VHF Transmitter and System Synchronizer for Use in a Portable Doppler Radar System
Title A VHF Transmitter and System Synchronizer for Use in a Portable Doppler Radar System PDF eBook
Author Paul E. Johnston
Publisher
Pages 44
Release 1976
Genre Doppler radar
ISBN

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A portable 50 MHz transmitter capable of 15 kW peak rf power output at up to 5 percent duty cycles is described. The transmitter and a system synchronizer, also described, are combined with a frequency-coherent receiver, an on-line minicomputer processor with oscillograpic display, and a novel collinear antenna to provide a highly portable VHF Doppler radar system. The system, complete with 5-degree azimuthal beamwidth antenna, weighs about 250 kg, and can be installed in remote locations in a few days. It has been used successfully in studies of equatorial and auroral ionospheric irregularities during the past several years.

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports
Title Scientific and Technical Aerospace Reports PDF eBook
Author
Publisher
Pages 244
Release 1990
Genre Aeronautics
ISBN

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Monthly Catalog of United States Government Publications

Monthly Catalog of United States Government Publications
Title Monthly Catalog of United States Government Publications PDF eBook
Author
Publisher
Pages 1386
Release
Genre Government publications
ISBN

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The United States Department of Commerce Publications, Catalog and Index Supplement

The United States Department of Commerce Publications, Catalog and Index Supplement
Title The United States Department of Commerce Publications, Catalog and Index Supplement PDF eBook
Author United States. Department of Commerce
Publisher
Pages 692
Release 1973
Genre Commerce
ISBN

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AL.

AL.
Title AL. PDF eBook
Author
Publisher
Pages 776
Release 1968
Genre Atmosphere, Upper
ISBN

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