NDLI: The deep space network: noise temperature concepts, measurements, and performance

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The deep space network: noise temperature concepts, measurements, and performance

Content Provider	NASA Technical Reports Server (NTRS)
Author	Stelzried, C. T.
Copyright Year	1982
Description	The use of higher operational frequencies is being investigated for improved performance of the Deep Space Network. Noise temperature and noise figure concepts are used to describe the noise performance of these receiving systems. The ultimate sensitivity of a linear receiving system is limited by the thermal noise of the source and the quantum noise of the receiver amplifier. The atmosphere, antenna and receiver amplifier of an Earth station receiving system are analyzed separately and as a system. Performance evaluation and error analysis techniques are investigated. System noise temperature and antenna gain parameters are combined to give an overall system figure of merit G/T. Radiometers are used to perform radio ""star'' antenna and system sensitivity calibrations. These are analyzed and the performance of several types compared to an idealized total power radiometer. The theory of radiative transfer is applicable to the analysis of transmission medium loss. A power series solution in terms of the transmission medium loss is given for the solution of the noise temperature contribution.
File Size	30840745
Page Count	161
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19830005061
Archival Resource Key	ark:/13960/t6sz14c06
Language	English
Publisher Date	1982-09-15
Access Restriction	Open
Subject Keyword	Communications And Radar Error Analysis Receivers Radio Antennas Amplifiers Ground Stations Standards Sensitivity Deep Space Network Atmospheric Attenuation Noise Temperature Radiative Transfer Transmission Loss Dicke Radiometers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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