NDLI: Gd sdr automatic gain control characterization testing (Document No: 20130008206)

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Gd sdr automatic gain control characterization testing (Document No: 20130008206)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Nappier, Jennifer M. Briones, Janette C.
Copyright Year	2013
Description	The General Dynamics (GD) S-Band software defined radio (SDR) in the Space Communications and Navigation (SCAN) Testbed on the International Space Station (ISS) will provide experimenters an opportunity to develop and demonstrate experimental waveforms in space. The GD SDR platform and initial waveform were characterized on the ground before launch and the data will be compared to the data that will be collected during on-orbit operations. A desired function of the SDR is to estimate the received signal to noise ratio (SNR), which would enable experimenters to better determine on-orbit link conditions. The GD SDR does not have an SNR estimator, but it does have an analog and a digital automatic gain control (AGC). The AGCs can be used to estimate the SDR input power which can be converted into a SNR. Tests were conducted to characterize the AGC response to changes in SDR input power and temperature. This purpose of this paper is to describe the tests that were conducted, discuss the results showi ng how the AGCs relate to the SDR input power, and provide recommendations for AGC testing and characterization.
File Size	3251256
Page Count	6
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20130008206
Archival Resource Key	ark:/13960/t82k1f698
Language	English
Publisher Date	2013-01-08
Access Restriction	Open
Subject Keyword	Communications And Radar Navigation Signal To Noise Ratios Superhigh Frequencies Waveforms Tdr Satellites Transponders Characterization Interpolation International Space Station Space Communication Radio Communication Automatic Gain Control Analog To Digital Converters Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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