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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 523 records · Page 29

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NASA NTRS2000

Stabilized reference frequency distribution for radio science with the Cassini spacecraft and the Deep Space Network

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SFODA CSO reference frequency stability phase nois↗

NASA NTRS2000

Cryogenic, X-band and Ka-band InP HEMT based LNAs for the Deep Space Network

This paper presents an overview of this development process with emphasis on comparison between modeled and measured, LNA modules, front-end receiver packages employing these modules, and antennae employing these packages.

Cryogenics LNAs DSN low noise amplifiers↗

NASA NTRS1997

A Microwave Performance Calibration System for NASA's Deep Space Network Antennas, Part 1: Assessment of Antenna Gain and Pointing, and Calibration of Radio Sources

The NASA JPL Deep Spae Network (DSN) of large, dual reflector antennas is subject to continuing demands for improved performance and reliabilty as a result of communications, control, and radio science requirement for future missions.

Beam Waveguide (BWG) antennas antenna gain and poi↗

NASA NTRS1997

Space Weather and the Tracking of Deep Space Probes by the NASA Deep Space Network (DSN): The Galileo and SOHO LASCO Experience

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radio links spacecraft Sun solar wind plasma degra↗

NASA NTRS1997

Holography, Raster Scan, and Stability Measurements of NASA-JPL Deep Space Network Antennas

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Holography Raster Scan Antennas↗

NASA NTRS1996

NASA's Deep Space Network: An Instrument for Scientific Research

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DSN protostar formation molecular spectroscopy↗

NASA NTRS1996

Coronal Faraday Rotation Observed with the Deep Space Network and the Magellan Spacecraft

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faraday rotation faraday magellan↗

NASA NTRS1995

Microwave Holography of Deep Space Network Reflector Antennas

The microwave antenna holography imaging technique has progressed considerably in recent.

Reflector Antennas↗

NASA NTRS1994

Field Demonstration of Photonic Antenna Remoting at X-Band in the NASA Deep Space Network

We report on the successful demonstration of antenna remoting at X-band using a low phase noise and high dynamic range fiber optic link in an operating antenna receiving system, while tracking Magellan spacecraft. The insertion of the fiber link into the existing system adds no observable degradation in noise temperature to the system. We compare the experimental results with our theoretical predictions of degradations in noise temperature and dynamic range of the system caused by the insertion of the fiber link.

antenna remoting at X-band high dynamic range fibe↗

NASA NTRS1993

A New Cryogenically Cooled 8.4 GHZ Traveling Wave Maser For The Deep Space Network

This design has recently been adapted for operation in a 1.6K liquid helium bath with a cryogenic feed system on a 34 meter beam waveguide antenna and has achieved an input noise temperature of 1.7 K at the feedhorn aperture.

Cryogenicacs↗

NASA NTRS2003

The 6-meter breadboard antenna for the Deep Space Network array

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DSN large array hydro formed antenna↗

NASA NTRS2000

Advances in the Deep Space Network - Adding Ka-Band to the 70-Meter Antenna

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Ka-band 70-meter antenna DSN↗

NASA NTRS2005

The Deep Space Network Array

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DSN Array↗

NASA NTRS2004

Deep Space Network capabilities for receiving weak probe signals

This paper will describe the capability and highlight the cases of the critical communications for the Mars rovers and Saturn Orbit Insertion and preparation radio tracking of the Huygens probe at (non-DSN) radio telescopes.

signals↗

NASA NTRS2004