NASA Scientific and Technical Aerospace Reports

Future microwave systems will be generally based on active electronic antennas. This evolution is determined by
requirements of improved performances of these equipments in terms of reliability, jamming resistance, flexibility for the
beamforming in the transmit and in the receive mode. Such antennas will be use in a large number of applications such as
radar, communication and electronic warfare. In order to satisfy this multifunctional aspects, it will be necessary to distribute
these antennas on ground based areas as well as the aircraft surface. Multistatic systems will impose multiple remoting of
antennas with respect to their processing units. In all cases, it appears a need for low loss link able to remote the control of
the antennas as well as distribution and processing of very wideband microwave signals (typ. 1-20 GHz). Maturity and
performances (in terms of spectral purity or phase noise, dynamic range linearity) of optoelectronic components permit to
envisage the optical transmission and the optical processing of these signals. Today, the optical transmission of microwave
signals offers in conjunction with their low loss propagation over very wide frequency bandwidth, a high immunity to
electromagnetic perturbations, which opens new avenues for the insertion of new concepts and photonic architectures in
microwave systems. Photonics and microwave technologies offers new opportunities for controlling many thousand array
elements together with handling the wide bandwidth of shared aperture antennas. Photonics technologies will provide an
interconnect solution for future airborne phased array radar antennas, which have conformality, bandwidth, EMI immunity,
size, and weight requirements increasingly difficult, if not impossible, to meet using conventional electrical interconnect
methods.
Derived from text
Communication Networks; Optical Communication; Beamforming; Microwave Equipment
20040050179 Congressional Research Service, Washington, DC, USA
USA Patriot Act Sunset: Provisions that Expire on December 31, 2005
Doyle, C.; Jan. 2004; 26 pp.; In English
Report No.(s): PB2004-104823; RS-32186; No Copyright; Avail: CASI; A03, Hardcopy
Several sections of Title 2 of the USA PATRIOT Act (the Act) relating to enhanced foreign intelligence and law
enforcement surveillance authority expire on December 31, 2005. Thereafter, the authority remains in effect only as it relates
to foreign intelligence investigations begun before sunset or to offenses or potential offense begun or occurring before that
date. There may be some disagreement of whether a potential offense is a suspected crime, an incomplete crime, or both.
NTIS
Law (Jurisprudence); Intelligence
20040050317 National Inst. for Occupational Safety and Health, Pittsburgh, PA, USA
Emergency Communication Triangle
Mallett, L.; Vaught, C.; Brnich, M. J.; Oct. 1999; 22 pp.; In English
Report No.(s): PB2004-104350; No Copyright; Avail: CASI; A03, Hardcopy
This training material focuses on the content of emergency warning messages. Research has shown that when an
emergency occurs, people often do not get the information they need for the purpose of taking appropriate action. This safety
talk presents a procedure, using mental cues that can be used by senders and receivers of emergency warnings. This material
has been developed for use in short safety-training sessions such as start-of-shift safety or toolbox talks. The information can
be presented in approximately fifteen minutes and is appropriate for workers at all experience levels. While the examples and
illustrations are taken from the underground coal mining industry, the training can be tailored to any work setting by
substituting appropriate examples.
NTIS
Emergencies; Communication
20040050767 Army Research Inst., Orlando, FL
Coding Verbal Interactions in a Prototype Future Force Command and Control Simulation
Durlach, Paula J.; Bowens, Laticla D.; Neumann, John L.; Carnahan, Thomas J.; Jan. 2004; 65 pp.; In English
Contract(s)/Grant(s): Proj-A790
Report No.(s): AD-A421089; ARI-TR-1141; No Copyright; Avail: CASI; A04, Hardcopy
As the U.S. Army undergoes transformation, it will need reliable means of measuring and training complex new skills.
Acquiring those will require analysis of human behavior in the context of human-in-the-loop simulations of Future Combat
Systems (FCS) still in the concept exploration phase. The goal of the present effort was to establish and measure command
group behavior observed in such a human-in-the- loop simulation via analysis of the verbal interactions of the command
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