Present a new method of designing 2-D IIR (infinite impulse response) digital filters taking into account the stability in a self-consistent manner by means of the interpolation of the transfer functions by two-variab...
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Present a new method of designing 2-D IIR (infinite impulse response) digital filters taking into account the stability in a self-consistent manner by means of the interpolation of the transfer functions by two-variable rational functions. The general theory is first outlined. Then, a design method is presented with special emphasis on the approximation of the circularly symmetric characteristics and, simultaneously, the degree economization. As a typical example, a Chebyshev-type filter is illustrated to show the effectiveness of the proposed method.< >
The hardwired point to point cabling that has been the mainstay of data handling on naval ships is slowly but surely giving way to more advanced techniques that include data bussing and high speed switching networks. ...
The hardwired point to point cabling that has been the mainstay of data handling on naval ships is slowly but surely giving way to more advanced techniques that include data bussing and high speed switching networks. The U.S. Navy's AN/USQ-82(V) Shipboard Data Multiplex System (SDMS) is now installed and operating for technical and operational evaluation purposes on USS Oldendorf , a DD 963 class destroyer. The distributed switching system “SITACS” introduced at ASNE Day 1982 has now been breadboarded. In the foreign arena, NATO standard bus and network interfaces are being implemented in Norwegian, United Kingdom and Canadian shipboard systems. These developments are reviewed, and projections are made regarding future trends in naval data handling systems.
Traditional thinking regarding the data transfer vehicle needed to interconnect elements of a distributed processing combat system generally envisions one or more data busses. This paper presents the somewhat unorthod...
Traditional thinking regarding the data transfer vehicle needed to interconnect elements of a distributed processing combat system generally envisions one or more data busses. This paper presents the somewhat unorthodox viewpoint that a distributed switching network is a better transition vehicle for moving from today's federated architectures to the distributed-processing architectures of the future. The structure and operation of a distributed switching network concept, called Standard Information Transfer Architecture for Combat Systems (SITACS), is briefly described. Simulation results are presented which show throughput and timing values considerably better than that achievable by data bus systems.
作者：
SMITH, CRFOSTER, REUSNCapt. Charles R. Smith
Jr. USN:graduated from the U.S. Naval Academy in 1949. He completed his flight training in 1951 and first served in Composite Squadron 33 on board Atlantic and Pacific Fleet aircraft carriers until 1954. He then attended the U.S. Navy Postgraduate School in Aeronautical Engineering and was awarded his Masters degree in SM Aero-Weapons Systems by Massachusetts Institute of Technology in 1957 at which time he was ordered to Heavy Attack Squadron ONE embarked in Atlantic ‘Fleet aircraft carriers. He graduated from the Naval War College Command and Staff Course in 1961 and subsequently sensed on the Staff U.S. Naval Safety Center arid was Operations Officer. Executive Officer and Commanding Officer of Heavy Attack Squadron SIX and Reconnaissance Attack Squadron THREE. From 1968 until 1970 he was Executive Officer of the USS John F. Kennedy (CVA-67) when the ship was commissioned and first deployed followed by duty in the Office of the Chief of Naval Operations (OPNA V) where he served under the Director of Fleet Operations until 1971. Capt. Smith commanded the Fast Combat Support Ship USS Detroit (AOE-4) during her first deployment was Commanding Officer. USS Independence (CV-62): and later returned to OPNAV where he was the Deputy Director of the Aircraft Carrier Programs
an assignment which he held until August 1976 when he assumed his present duties as Chief Navy Section MAAG. Greece. Capt. Richard E. Foster
USN (Ret.):has been affiliated with Wheeler Industries. Inc. us Program Manager since 1968 when he retired from the U.S. Navy. He graduated from the U.S. Naval Academy with the Class of 1941 and later attended the U.S. Navy Postgraduate School in Engineering Design. He served at sea as Electrical Officer in the USS Pennsylvania and as Engineer Officer in the USS Indiana and the aircraft carrier USS Wright. His three tours of duty in the Bureau of Ships included the Interior Communication and Fire Control Branch the Machinery Design Division and as Administrative Assistant
For reliability of electrical shipboard equipment prediction and evaluation, the data on failure rates of parts and equipment is required. Maintenance Data Collection System (MDCS) contains maintenance data which, wit...
For reliability of electrical shipboard equipment prediction and evaluation, the data on failure rates of parts and equipment is required. Maintenance Data Collection System (MDCS) contains maintenance data which, with certain limitations, may be ultilized for derivation of the data on electromechanical equipment for reliability evaluation and prediction. This paper presents a method of utilization of MDCS for reliability purposes.
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