Space programs summary no. 37-32, volume iii for the period january 1, 1965 to february 28, 1965. deep space network
Network system for communication and control of spacecraft on deep space exploration missions
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Network system for communication and control of spacecraft on deep space exploration missions
A beam waveguide is a mechanism for guiding electromagnetic radiation from one part of an antenna to another through a series of reflectors. Appropriate placement of reflectors on an antenna allows a beam to be guided around the elevation axis and/or below the alidade. The beam waveguide permits placement of all electronics in a room on the alidade below the elevation axis, or below the alidade; feed horn covers to be protected from the weather; and feed electronics to be in spacious rooms rather than in crowded cones, and always level rather than tipping with change in elevation angle. These factors can lead to lower costs in implementation such as Ka-band, better antenna performance at X-band, more efficient and stable performance of transmitters and receivers, and lower maintenance and operating costs. Studies are underway to determine methods for converting the major antennas of the Deep Space Network (DSN) to beam waveguide operations by 1995.
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...The Frequency and Timing System (FTS) of the DSN as it existed before the Cassini program easily met the requirements for all of the NASA deep space missions. These requirements and the performance of the present DSN FTS are given.
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The progress is reported in the DSN for Nov. and Dec. 1973. Research is described for the following areas: functions and facilities, mission support for flight projects, tracking and ground-based navigation, spacecraft/ground communication, network control and operations technology, and deep space stations.
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The purpose of this paper is to highlight the current status and prospects for VLBI in the NASA DSN.
Progress in the development of the DSN is reported along with TDA research and technology, network engineering, hardware, and software implementation. Included are descriptions of the DSN function and facilities, Helios mission support, Mariner Venus/Mercury 1973 mission support, Viking mission support, tracking and ground-based navigation, communications, network control and data processing, and deep space stations.
For use by Solar System Ambassadors, in part or complete, for public presentation at various venues throughout the U.S.
Network engineering, hardware and software development, and tracking station operations for support of deep space unmanned flight projects are summarized.
Microwave holography, as applied to reflector antennas, is a technique which urtilizes the Fourier Transform relation between the complex far-field radiation pattern of an antenna and the complex aperture distribution.
Cassini radio science experiments have several categories of requirements for DSN tracking services. The three main areas for upgrade are in Ka-band, long-term frequence stability, and short-term frequency stability/phase noise level.
In this paper, we will describe the benefits of arraying and past as well as expected future use of this application. The signal processing aspects of array system are described. Field measurements via actual tracking spacecraft are also presented.