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Topic: DOD master clock

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	Department of Defense master clock - Wikipedia, the free encyclopedia
		The Department of Defense master clock is the master clock to which time and frequency measurements for the United States Department of Defense are referenced, that is to say, are traceable.
		The U.S. Naval Observatory master clock is designated as the DOD Master Clock.
		The U.S. Naval Observatory master clock is one of the two standard time and frequency references for the U.S. Government in accordance with Federal Standard 1002-A.
	en.wikipedia.org /wiki/DOD_master_clock (137 words)

	Nat' Academies Press, An Assessment of Precision Time and Time Interval Science and Technology (2002)
		DOD systems such as GPS, military strategic and tactical relay (MILSTAR), joint surveillance target attack radar system (JSTARS), Patriot, advanced medium-range air-to-air missile (AMRAAM), joint tactical information distribution system (JTIDS), and many classified programs are based on clocks with much greater accuracy and oscillators with much less noise than are required for commercial applications.
		From the general perspective of the DOD, precise time synchronization is needed primarily to efficiently determine the start of a code sequence in secure communications, to perform navigation, and to locate the position of signal emitters by means of time difference of arrival (TDOA), as is done, for example, in GPS positioning.
		DOD applications require increasingly precise time and frequency information distributed to widely separated sites, necessitating effective means of time and frequency dissemination; GPS is currently the most widely used means.
	www.nap.edu /books/0309085225/html/7.html (3006 words)

	The U.S. Naval Observatory: What time is it? (Site not responding. Last check: 2007-10-21)
		The master clock at the USNO keeps the time for all Department of Defense agencies and satellites, which provides us with our GPS location.
		The clock is so accurate it keeps time to 10 one-billionths of a second, or your location by GPS to 10 feet.
		Lisa Moreau calbtrates the modem for the master clock.
	www.dcmilitary.com /navy/seaservices/7_13/local_news/15642-1.html (525 words)

	CLUI Newsetter - Spring 2005 - Global Positioning Pivots Around Colorado Springs
		The invention of longitude as a ship-based navigation system, using accurate portable clocks on board ships and calculating distances relative to known celestial entities, revolutionized the ability for colonial scouts and imperial forces to discover, conquer, and control the world.
		The nation’s “Master Clock,” regulated by the atomic decay of hydrogen, resides at the observatory, overseen by the Director of Time Service, and the Superintendent of the Naval Observatory, who is designated as the DOD Precise Time and Time Interval (PTTI) Manager.
		Both of the US’s Master Clocks, at the Naval Observatory and at Schriever, use devices known as hydrogen masers, caster-mounted file-cabinet sized appliances manufactured by the Symmetricom company in Beverly, Massachusetts.
	www.clui.org /clui_4_1/lotl/v28/m.html (904 words)

	Master clock, grandfather clock - A Frequency Compensated Clock to Realize IEEE 1588 and its
		ETC Master Clock for control of impulse slave clocks, self-setting Mobaline slave clocks, bells, lighting and relays.
		The systems consist of a master clock, and secondary (or slave) clocks located in any The slave clocks are electrically controlled by the master clock.
		The 5600MSC Master Sync and Clock Generator, is both a broadcast quality master sync pulse generator (SPG) and a master clock.
	grandfather-clock.allinfosites.com /q/grandfather-clock-master-clock.htm (640 words)

	Mobile Knowledge - Support (Site not responding. Last check: 2007-10-21)
		Clock, Clocking - A master timing device used to provide the basic sequencing pulses for the operation of any synchronous transmission.
		DOD (Department of Defense) - One portion of the USA executive government responsible for military concerns, including data communications and also responsible for some LAN related protocols and standards.
		Master Clock - The timing signal or signal mechanism used by all stations in a network for synchronization.
	www.mobile-knowledge.com /support/glossary.asp (17311 words)

	American Graduate University (Site not responding. Last check: 2007-10-21)
		Tuition costs associated with graduate degrees and master’s certificates are covered in whole or in part by virtually all government agencies and many commercial organizations.
		The ceiling for DOD TA is $250 per credit hour and $4,500 per fiscal year (Oct. 1-Sep. 30).
		An example of the policy expressed for distance education lessons completed would be: if the student completes only 10 lessons of a 30-lesson course and paid $750 tuition; after subtracting the $100 registration fee, the student would receive a potential refund of $433.
	www.agu.edu /sc/tuition.html (1222 words)

	[No title]
		This operation may cause modification of the time server's (not the provider's) clock and should be defined to be an auditable event in the time server.
		This operation may cause modification of the time clerk's (not the server's) clock and should be defined to be an local auditable event in the time clerk.
		This operation may cause modification of the calling time clerk's (not the servicing time server's) clock and should be defined to be an auditable event in the calling time clerk.
	www.opengroup.org /rfc/mirror-rfc/rfc28.1.txt (10167 words)

	VANITY: US Atomic clock sych crash? (Site not responding. Last check: 2007-10-21)
		I do have a cheapo "atomic clock" sitting near the desk, and it seems to be fine.
		Atomic clocks rely on a small piece of radioactive material and a measuring device, that records it's rate of decay.
		We had a master clock phase-locked to the WWV atomic clocks -- with WWV time distrubuted all through the factory.
	www.freerepublic.com /focus/news/844249/posts (1730 words)

	GPS Clocks (Site not responding. Last check: 2007-10-21)
		GPS satellites use atomic clocks: a precision clock that depends for its operation on an electrical oscillator regulated by the natural vibration frequencies of an atomic system (as a beam of cesium atoms)
		Hydrogen atomic clocks maintain hydrogen atoms at the required energy level in a container with walls of a special material so that the atoms don't lose their higher energy state too quickly.
		Rubidium atomic clocks, the simplest and most compact of all, use a glass cell of rubidium gas that changes its absorption of light at the optical rubidium frequency when the surrounding microwave frequency is just right.
	www.colorado.edu /AcademicAffairs/engineering/ASEN/asen5090/atomic_clocks.html (146 words)

	LISTING OF EXECUTIVE AGENT RESPONSIBILITIES
		The Department of the Navy is assigned the responsibility to provide JVIS for support of DON, DOD components, the Federal Government, and public requirements.
		The Secretary of the Navy is responsible to ensure that the Commandant of the Marine Corps serves as the Executive Agent (EA) for the DOD Non-Lethal Weapons Program.
		In 1991, recognizing the merit in applying standard provisions to all DoD and DoD Component negotiated international agreements, OSD directed Navy IPO as Executive Agent to develop an international agreements generator to be used DoD-wide and to maintain it to reflect current laws, regulation, and policy.
	www.hq.navy.mil /aausn/EXAG4.htm (3140 words)

	Recording gear reviews - Apogee Big Ben, Zaolla Z-sub snake, Boss ODB-3 bass overdrive.
		It also provides digital format conversion and improves the clock of digital signals sent through it - all with the quality that Apogee is well known for.
		Switch back to the AD-8000 on it's own clock and there was sort of a "veil" over the sound for lack of a better term.
		It's nice to be able to accurately check mixes and masters on an ancient CD player as well as on a new one.
	www.f7sound.com /gear02.htm (1174 words)

	Sixth DoD Astrometry Forum (Site not responding. Last check: 2007-10-21)
		The U.S. Naval Observatory has as part of its mission the requirement to determine the positions and motions of celestial objects, to provide astronomical data, to measure the Earth's rotation and to maintain the Master Clock for the United States.
		The Department of the Navy, through the U.S. Naval Observatory, is responsible for establishing, maintaining, and coordinating the astronomical reference frame(s) for celestial navigation and orientation of space systems.
		The U.S. Naval Observatory, Washington, D.C. is the agency responsible for Precise Time and Time Interval (PTTI) reference values for the DoD and other governmental agencies, coordinating DoD timing capabilities, analysis, evaluation, and monitoring of Research and Development and Operational PTTI systems.
	ad.usno.navy.mil /forum/USNO_products.html (826 words)

	Crystal and frequency control glossary - D (Site not responding. Last check: 2007-10-21)
		A circular antenna used to pick up transmissions broadcast from a satellite.
		The master clock to which time and frequency measurements for the U.S. Department of Defense are referenced, i.e., are traceable.
		SC cut, IT cut, and FC cuts are examples of double rotated quartz cuts.
	www.icmfg.com /crystalglossaryd.html (581 words)

	NHRC-DET Links Page Brooks City-Base (Site not responding. Last check: 2007-10-21)
		DoD computer systems may be monitored for all lawful purposes, including to ensure that their use is authorized, for management of the system, to facilitate protection against unauthorized access, and to verify security procedures, survivability, and operational security.
		Monitoring includes active attacks by authorized DoD entities to test or verify the security of this system.
		Use of this DoD computer system, authorized or unauthorized, constitutes consent to monitoring of this system.
	www.brooks.af.mil /NHRC/links.htm (195 words)

	DefenseLINK News: Deputy Sec Def Press Conference on Y2K, Dec. 16 (Site not responding. Last check: 2007-10-21)
		U.S. Naval Observatory: The U.S. Naval Observatory, which maintains the Master Clock of the United States, will drop a "time ball" at midnight EST on New Year's Eve, Dec. 31, to officially mark the beginning of the year 2000 and the beginning of the Third Millennium in 2001.
		This event will be the culmination of a "round the world time ball drop" in which time balls will mark the beginning of the New Year as it sweeps westward from the International Date Line.
		Due to space limitations at the CY2KSS and the Atomic Clock, pool coverage will be required during rollover.
	www.defenselink.mil /advisories/1999/p12141999_p297-99.html (1077 words)

	Nat' Academies Press, An Assessment of Precision Time and Time Interval Science and Technology (2002)
		Chapter 5 provides concrete examples of how PTTI affects the warfighter and what battlefield capabilities might be enabled by improvements in PTTI.
		Navy responsibility in PTTI is currently designated in DOD Instruction 5000.2, Part 7, Section C, which calls for the Navy to
		Coordinating the development of precise time and time interval techniques among DOD components.
	www.nap.edu /books/0309085225/html/11.html (585 words)

	fei-zyfer (Site not responding. Last check: 2007-10-21)
		- A message included in the GPS signal which reports the satellite's location, clock corrections and health.
		- The time scale established by the Bureau International de Poids de Mesure' (BIPM) on the basis of data from atomic clocks operating in several establishments conforming to the definition of the second, the unit of time of the International System of Units (SI).
		- A distance measurement based on the correlation of a satellite transmitted code and the local receiver's reference code, that has not been corrected for errors in synchronization between the transmitter's clock and the receiver's clock.
	www.zyfer.com /defs_abbs.html (2059 words)

	Satellite Signals (Site not responding. Last check: 2007-10-21)
		the tracking stations is transmitted to the Master
		clock corrections, and other message data are then
		DoD to deny the enemy of high accuracies or even to
	www.tpub.com /content/USMC/mcr3161a/css/mcr3161a_83.htm (294 words)

	Drums On Demand
		He founded Gig Magazine in 1986 and his book, Making Money Making Music, is available at bookstores nationwide (and in the DOD store).
		“DOD has put out a product that finds it's way into every project I work on.
		Being able to track an entire song, band, singer, the works, to a click track -- then auditioning DOD Master Loops and Song Sets after that.
	www.drumsondemand.com /aboutus.html (453 words)

	Sam Ash - 1-800-4-SAMASH
		With this new distribution specialist from Lucid, you can circulate audio and sync all around your studio, no questions asked.
		Dedicated word clock devices have been on the professional recording scene for some time now.
		Simultaneously outputs Word Clock, 256x Superclock, 1024x Lucid Ultraclock, and AES-11 sync formats at...
	www.samash.com /catalog/search.asp?departmentid=0&brandid=1747 (223 words)

	time clock system (Site not responding. Last check: 2007-10-21)
		Timeclocks - Timeclock - Time Clocks - Time Clock - GLOBAL TIME...
		Choosing a time and attendance system today can be an arduous task when faced with the sheer numbers of employee time keeping systems on the market.
		ZoneTick World Time Zone Clock is a free download for Windows that replaces the regular system clock with several time zones of your choosing.
	www.bestclocksinfo.com /13/time-clock-system.html (253 words)

	Double Gate Transistor : Discount Electronics
		The small size of these circuits allows high speed, low power dissipation, and reduced manufacturing cost compared with board-level...
		antenna Directional coupler Directive gain Direct-sequence spread spectrum Discrete Discrete Fourier transform Dispersion-limited operation Distortion-limited operation Distortion Distributed switching Diurnal phase shift Diversity reception DOD master clock Doping Double-sideband suppressed-carrier transmission Double-slit experiment Drift Drop and insert Dropout Dual access Dual-modulus prescaler Dual-tone multi-frequency Duobinary signal Duplex Duty cycle Dual in-line...
		Description The Apollo flight computer was the first to use integrated circuits (ICs).
	www.cobourgpuc.com /179-Double-Gate-Transistor.html (894 words)

	[No title]
		The Official Source of Time for the Department of Defense (DoD) and the Global Positioning System (GPS), and a Standard of Time for the United States
		“The Department of the Navy serves as the country's official timekeeper, with the Master Clock facility at the Washington Naval Observatory.”
		The U.S. Naval Observatory (USNO) is established as the Department of Defense reference for time by DoD Directive 5160.51 of 14 Jun 85 and SECNAV Instruction 4120.20 of 04 Feb 86.
	tycho.usno.navy.mil /frontpage.html (164 words)

	0603207N Air/Ocean Tactical Applications
		It also develops near-real-time Earth orientation predictions through use of satellite or fiber optics transmission of Very Long Baseline Interferometer (VLBI) data for DOD navigation and positioning systems.
		It also develops advanced electronic light detectors and interferometry in the optical and infrared wavelength regions for very precise determination of positions of both faint and bright star, satellite tracking, and space debris studies.
		more accurate environmental stability and clock model algorithms.
	www.fas.org /irp/budget/fy98_navy/0603207n.htm (3863 words)

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