9,786 research outputs found
A microprocessor based anti-aliasing filter for a PCM system
Get PDFDescribed is the design and evaluation of a microprocessor based digital filter. The filter was made to investigate the feasibility of a digital replacement for the analog pre-sampling filters used in telemetry systems at the NASA Ames-Dryden Flight Research Facility (DFRF). The digital filter will utilize an Intel 2920 Analog Signal Processor (ASP) chip. Testing includes measurements of: (1) the filter frequency response and, (2) the filter signal resolution. The evaluation of the digital filter was made on the basis of circuit size, projected environmental stability and filter resolution. The 2920 based digital filter was found to meet or exceed the pre-sampling filter specifications for limited signal resolution applications
A catalog of radio observations of Jupiter 1961-1964
Get PDFCatalog of radio observations of Jupiter 1961 to 196
The antiviral activity of 2-keto-3-ethoxy butyraldehyde (Kethoxal) against vesicular stomatitis virus.
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A study of polarization of decameter radiation from Jupiter
Get PDFMethods of analyzing polarization measurements of decameter radiation from Jupite
Measurements of the Effect of Trailing-edge Thickness on the Zero-lift Drag of Thin Low-aspect-ratio Wings
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