Exploring the next generation Deep Space Network
This paper examines several of the concepts considered and explores some of the options for the next generation Deep Space Network.
Deep Space Network large reflector antennas arrays↗
Engineering topics
Cucchissi, J.
Publications and source records attributed to Cucchissi, J..
Improved Blind Pointing of NASA's Beam-Waveguide Antennas for Millimeter Wave Operation
NASA's Deep Space Communications Network (DSN) consists of three complexes of large antennas located at Goldstone, California, Madrid, Spain, and Canberra, Australia.
pointing beam-waveguide antennas millimeter wave↗
Rail transit fare collection: Policy and technology assessment
The impact of fare policies and fare structure on the selection of equipment was investigated, fare collection systems are described, hardware and technology related problems are documented, and the requirements of a fare collection simulation model are outlined. Major findings include: (1) a wide variation in the fare collection systems and equipment, caused primarily by historical precedence; (2) the reliability of AFC equipment used at BART and WMATA discouraged other properties from considering use of similar equipment; (3) existing equipment may not meet the fare collection needs of properties in the near future; (4) the cost of fare collection operation and maintenance is high; and (5) the relatively small market in fare collection equipment discourages new product development by suppliers. Recommendations for fare collection R&D programs include development of new hardware to meet rail transit needs, study of impacts of alternate fare policies increased communication among policymakers, and consensus on fare policy issues.
Deshpande, G. K.↗