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Measurements-Based Radar Signature Modeling
A high-level text that synthesizes diverse research areas for characterizing objects (targets) from radar data and establishes a novel analysis framework for a class of signal processing techniques useful for high-resolution radar signature modeling. The only text to integrate a diverse body of work on characterizing objects (targets) from radar data into a common analysis framework, this book brings together the results of research papers and technical reports providing improved resolution and precision in radar target signature modeling and target motion solutions. It offers comprehensive coverage related to basic radar concepts, signal representation, and radar measurements; the developme...
Breakdown in the Near Field of Re-entry Vehicle Antennas
The research included: (a) a detailed study of the bounds on the near electric field of antennas, (b) calculation of the near electric field of specific antennas, (c) calculation of the breakdown power for various antenna configurations, (d) the effect of time-varying plasmas and non-linearites on microwave breakdown, (e) high temperature effects on breakdown, and (f) a study of miscellaneous reentry effects. (Author).
Physical Limitations on Interference Reduction by Antenna Pattern Shaping
The note addresses the problem of nulling out an interfering noise source by appropriately modifying the antenna radiation pattern. It considers two complementary, one-dimensional antenna structures, i.e., a circumferentially symmetric line source of length a, and an axially independent cylindrical antenna of radius rho sub o. The authors consider first the case of N discrete noise sources and compute the loss in antenna directivity (and subsequent loss in signal/noise ratio) when the radiation pattern is modified so as to place a null at each angular position of the interfering noise source. The results indicate that if all noise sources are outside the main beam, the loss in directivity is negligible. When one or more noise sources are in the main beam, the antenna directivity can be reduced appreciably. It is shown that when uniformly distributed noise is superimposed over the discrete noise, the same antenna pattern maximizes the signal/noise ratio for those practical cases when the discrete noise source power is significantly greater than the uniformly distributed noise source. (Author).
The Technical Collection of Intelligence
Technical collection represents the largest asymmetric edge that technologically advanced countries such as the United States and its allies have in the intelligence business. Intelligence veteran Robert M. Clarkâs new book offers a succinct, logically organized, and well written overview of technical collection, explained at a non technical level for those new to the field. Filling a void in the literature, The Technical Collection of Intelligence is the only book that comprehensively examines the collection, processing, and exploitation of non-literal intelligence information, including laser, acoustic, and infrared signals; non-imaging optical intelligence sources; and radar tracking an...
Bibliography, with Abstracts, of AFCRL Publications from 1 April to 30 June 1970
This bibliography lists all AFCRL in-house reports, journal articles, and contractor reports issued from 1 April to 30 June 1970. Abstracts are included.
Bibliography, with Abstracts, of AFCRL Publications from 1 July to 30 September 1971
This bibliography lists all AFCRL in-house reports, journal articles, and contractor reports issued from 1 July to 30 September 1971. Abstracts are included.
Scientific and Technical Aerospace Reports
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
