New tracking implementation in the deep Space Network
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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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In this paper they discuss various options but focus on the feasibility of the phased arrays as a viable option for this application.
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The first Space Very Long Baseline Interferometry (VLBI) mission VSOP has been successfully operated since 1997 and several follow-on missions are in development or under discussion.
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This paper describes the current DSN automation system design, functions, test results, and actual field implementation experience.
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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.
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The microwave antenna holography imaging technique has progressed considerably in recent.
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.
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.
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