NASA Scientific and Technical Aerospace Reports

20040111280 National Telecommunications and Information Administration, Washington, DC
Potential Interference from Broadband Over Power Line (BPL) Systems to Federal Government Radiocommunications
at 1.7-80 MHz, Phase 1 Study, Volume 1
2004; In English
Report No.(s): PB2004-107251; NTIA-04-413-Vol-1; No Copyright; Avail: National Technical Information Service (NTIS)
On April 23, 2003, the Federal Communications Commission (Commission or FCC) adopted a Notice of Inquiry (NOI)
seeking information on potential interference from Broadband over Power Line (BPL) systems and associated changes that
may be needed to accommodate BPL systems in Part 15 of the Commission’s rules. As described in the NOI, ‘access’ BPL
systems transmit Internet and other data at radio frequencies over neighborhood power lines and use electrical outlets in BPL
users’ premises as data ports for computers and other devices. ‘In-house’ BPL systems use indoor wiring for networking
within the user’s premises. In its response to the NOI, the National Telecommunications and Information Administration
(NTIA) described Federal Government usage of the 1.7-80 MHz frequency range, identified associated interference concerns,
and outlined the studies it planned to conduct to address those concerns. NTIA reviewed relevant studies and regulations in
order to help refine the scope and priorities for its studies. NTIA parsed its planned studies into two time phases, first
addressing technical issues of the most immediate importance. As reported herein, Phase 1 defines interference risks to radio
reception in the immediate vicinity of overhead power lines used by ‘access’ BPL systems. It also suggests means for reducing
these risks and identifies techniques for mitigating local interference should it occur.
NTIS
Telecommunication; Broadband; Frequency Ranges
20040111469 PAMAM-Human Factors Engineering (1989) Ltd., Hod Hasharon
Pilot Study: System Model of Situation Awareness and Decision Making in Command and Control
Brickner, Michael S.; Lipshitz, Raanan; Mar. 2004; 52 pp.; In English
Contract(s)/Grant(s): FA8655-03-1-3041
Report No.(s): AD-A425397; EOARD-SPC-03-3041; No Copyright; Avail: CASI; A04, Hardcopy
This report results from a contract tasking PAMAM as follows: The Grantee will develop a theoretic system model of
command and control situation awareness and decision making under uncertainty suitable for guiding the planning and design
of operator-in-the-loop (OITL) studies. This will form a pilot study in preparation for a larger effort addressing sensemaking
and situational awareness in the presence of uncertain and/or dissonant information.
DTIC
Command and Control; Decision Making; Situational Awareness
20040111485 Microelectronics Center of North Carolina, Research Triangle Park, NC
Regional Testbed Optical Access Network (Project HELIOS)
Bladine, Illia; Jackson, Laura E.; Singhai, Mrugendra; Stevenson, Dan; Thorpe, Steve; Jul. 2004; 59 pp.; In English; Original
contains color illustrations
Contract(s)/Grant(s): F30602-00-C-0034; DARPA ORDER-J182; Proj-J182
Report No.(s): AD-A425442; AFRL-IF-RS-TR-2004-194; No Copyright; Avail: CASI; A04, Hardcopy
This final technical report presents the results and conclusions from a set of research objectives posed by the Helios
project. The objectives included: The study of all- optical LAN architectures and protocols; the establishment of a testbed for
the purpose of demonstrating high-bandwidth applications and collecting and analyzing statistical profiles of their traffic; and
the study of propagation of analog signals through all-optical networks. The report is structured as follows: Sections 2, 3 and
4 describe MCNC-RDI’s work on the HiPeR-1 protocol and scheduler for broadcast WDM LAN architectures. Section 5
describes the application testbed established between MCNC-RDI, NCSU and UNC-CH using NON infrastructure for the
purpose of accumulating statistical information about traffic demands of high-bandwidth applications. Section 6 describes the
application cluster established within MCNC-RDI in order to test high-bandwidth/ high-compute demand applications.
Section 7 describes the research performed at Lucent Bell Labs concerned with transporting analog signals over DWDM
optical links including physical layer impairments and adaptation layer studies. Section 8 describes the work performed jointly
by UNC-CH and the University of Pennsylvania to establish a multimedia network testbed for telepresence applications. The
Appendices present some of the technical details related to the HiPeR-1 scheduling protocol developed and implemented by
MCNC-RDI.
DTIC
Local Area Networks; Optical Communication
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