Refimprove date June 2008 speculation date April 2010 infobox telescope name SquareKilometreArray SKA ... Phased array diameter diameter2 diameter3 angular resolution area 1,000,000 m focal length mounting dome commons Page or category name at Commons The SquareKilometreArray SKA is a radio telescope in development which will have a total collecting area of approximately one squarekilometre. ref http www.skatelescope.org SquareKilometreArray website. ref It will operate over a wide range of frequencies ... , The SquareKilometreArray , p.24 ref It will be able to survey the sky more than ten thousand ... in Western Australia. Australian SKA Pathfinder ASKAP Main Australian SquareKilometreArray Pathfinder ... World s biggest radio telescope, SquareKilometreArray publisher BBC News Online date 2011 03 31 url ... Inside the SquareKilometreArray , Cosmos magazine online, January 2012 http theconversation.edu.au pages squarekilometrearray The SquareKilometreArray Category , The Conversation , 2011 12 Cite ... bn de SquareKilometreArray fr SquareKilometreArray id SquareKilometreArray ja pl SquareKilometreArray pt SquareKilometreArray ru SquareKilometreArray sv SquareKilometreArray uk vi K nh thi n v n SKA zh ... Arrays phased array feeds to give a wide field of view 30 square degrees . ASKAP is being built ... of 200 square degree s and of more than 1 square degree about 5 full Moons at higher frequencies. One innovative development is the use of Focal Plane Arrays using phased array technology to provide ... collecting area at low and mid frequencies by 2019. Phase 2 Completion of the full array at low and mid frequencies by 2024. Phase 3 Building of the high frequency array from 2022. The frequency ... elements that will make up the SKA low, SKA mid and dish arrays File SKA sparse array big.jpg thumb right Artist s Impression of a Low Band SKA Sparse Aperture Array Station File SKA dense array big.jpg ... more details
signals . ref World s biggest radio telescope, SquareKilometreArray , BBC Radio 4, retrieved 13 ... COAST Compact Objects with ASKAP Surveys and Timing See also SquareKilometreArray CSIRO ... telescopes at Parkes Observatory Parkes , Australia Telescope Compact Array Narrabri and Mopra Observatory ... antenna effective area collecting area of approximately 4,000 square metres. The unique features that will make ... more details
Square kilometer , symbol km sup 2 sup , is a decimal multiple of the SI Units of measurement unit of surface area , the square metre , one of the SI derived unit s. 1 km sup 2 sup is equal to 1,000,000 metre m sup 2 sup 100 ha hectare 0.386302 square mile s 247.105381 acre s Conversely 1 m sup 2 sup 0.000001 10 sup 6 sup km sup 2 sup 1 hectare 0.01 10 sup 2 sup km sup 2 sup 1 square mile gaps 2.58998811 km sup 2 sup 1 acre gaps 0.004047 km sup 2 sup , gaps 0.404 7 ha or 4047 m sup 2 sup 2.47 acres ha Note km sup 2 sup means km sup 2 sup , squarekilometre or kilometre squared and not k m sup 2 sup , kilo square metre. For example, 3 km sup 2 sup is equal to gaps 3 1,000 m sup 2 sup 3,000,000 m sup 2 sup , not 3,000 m sup 2 sup . See also Conversion of units SI prefix for the precise meaning of the prefix k SquareKilometreArray , a proposed radio telescope in South Africa or Australia , which is intended to have a collecting area of approximately 1 km sup 2 sup Category Units of area Category SI derived units standard stub af Vierkante kilometer als Quadratkilometer ar an Kilometro quadrato ast Quil metru cuadr u az Kvadrat kilometr bn zh min nan P ng hong kong l ba be be x old bg bs Kvadratni kilometar cs Kilometr tvere n cy Cilometr sgw r da Kvadratkilometer de Quadratmeter Quadratkilometer dv dsb Kwadratny kilometer et Ruutkilomeeter el es Kil metro cuadrado eo Kvadrata kilometro ext Quil metru quairau eu Kilometro koadro fa fr Kilom tre carr fy Kante kilometer gv Kilomeadar kerrinagh gl Quil metro cadrado hak Ph n f ng K ng l ko hy hi hsb Kwadratny kilometer hr etvorni kilometar id Kilometer persegi ia Kilometro quadrate is Ferk l metri it Chilometro ... Kilometre kare uk ur vec Chi ometro quadro vi Kil m t vu ng vo Kvadamilmet ... more details
Kilometre per squarekilometre is an SI derived unit used for measurement of density of a length linear feature in an area . It is used to measure, for example, drainage density ref http www.eoearth.org article Stream morphometry ref or road density . ref http www.balochistan.gov.pk index.php?option com content&task view&id 113&Itemid 164 ref measurement stub geology stub transport stub References reflist Category Units of density Category Geomorphology Category Road transport ... more details
Array SMA Atacama Large Millimeter Array ALMA CHARA arraySquareKilometreArray SKA Allen ...An array is a systematic arrangement of objects, usually in rows and columns. Specifically, it may refer ... at run time, including Array data structure , an arrangement of items at equally spaced addresses in computer memory Array data type , used in a programming language to specify a variable that can be indexed Associative array , an abstract data structure model that generalizes arrays to arbitrary indices or various kinds of the above, such as Bit array or bit vector Dynamic array , allocated at run time Parallel array of records, with each field stored as a separate array Sparse array , with most elements omitted, to store a sparse matrix Variable length array Jagged array , where the rows have different lengths individually or various related concepts Vector processor Array processor , a computer to process arrays of data not to be confused with a processor arrayArray programming , using matrix algebra notation in programs not the same as array processing Array slicing , the extraction of sub arrays of an array or also Global Arrays , a library for parallel processing Intel Array Visualizer , a piece of scientific graphics software In mathematics and statistics An array or matrix mathematics e.g. a Monge array , a Costas array A standard array in coding theory In statistics, arrays are a name for some kinds of Category Experimental design Intersection array a concept of category theory The thinned array curse or sparse array curse, a theorem about electromagnetic waves ... array, such as a phased array , a tower array , etc. A speaker array, used to produce directional Sound Asynchronous array of simple processors Ball grid array , pin grid array , and land grid array , ways to connect integrated circuits Cache Array Routing Protocol CARP Color filter array , placed over an imaging array Disk array , such as the RAID Field emitter array , an electron ... more details
plaque. The kilometre zero point for highways is located at Tiananmen Square, just outside the Zhengyangmen ... when it was built in 1849. The city of Kecskem t also has a Zero Kilometre Stone on Kossuth Square ... originating from the station. Madagascar The Kilometre Zero for the major roads radiating from Antananarivo is located on the square in front of the Soarano Railway Station. Mexico The Kilometre ...Other uses Kilometer zero disambiguation Refimprove date June 2010 In many countries, Kilometre Zero ... lead to Rome all roads lead to Rome . Countries Argentina File Monolito Kil metro 0.jpg thumb Kilometre Zero, Buenos Aires Argentina marks Kilometre Zero with a monolith in Congressional Plaza Plaza ... of Vancouver Island . Chile File Km0.jpg thumb Kilometre Zero at Plaza de Armas in Santiago, Chile . All ... de Armas main square in downtown Santiago. Coord 33.437807 S 70.650523 W Chile s Autopista Central ... Kilometre Zero at the intersection with the Alameda del Libertador Bernardo O Higgins , the capital ..., and Zero Point of Highways, China in English and Chinese. Cuba Cuba s Kilometre Zero is located ... 25 carat unit carat 5 g diamond, which marks Kilometre Zero for Cuba. The original diamond ... 1 , DR 2 , and DR 3 all depart from Kilometre Zero from Santo Domingo s Parque de Independencia. Ethiopia File Menelik II Addis Abeba.jpg 200px right thumb Statue of Menelik II Kilometre Zero in Ethiopia is in Menelik Square, Addis Abeba , in front of St. George s Cathedral, Addis Ababa St. George ... Image Notre dame kilometer zero.jpg thumb left Kilometre Zero of the French highways Kilometre Zero of French Route nationale France national highways , located in Paris on the square facing the main ... of Paris. Coord 48.8534 N 2.3488 E Hungary Main Zero Kilometre Stone Budapest The Zero Kilometre ... in this point today. Italy The Italian Kilometre Zero is located on the top of the Capitoline Hill , in Rome . Japan The nihongo Kilometre Zero of Japan Nipponkoku D ro Genpy is on the middle ... more details
No footnotes date March 2011 101st kilometre lang ru 101 , sto pervyy kilometr is a Colloquialism colloquial name for the law restricting freedom of movement in the Soviet Union . In the Soviet Union, the rights of an inmate released from a prison would typically still be restricted for a long period. Instead of regular documents, inmates would receive a temporary substitute, a wolf ticket Russia wolf ticket lang ru , volchij bilet , confining them to internal exile without the right to settle closer than convert 100 km mi abbr on to large urban area urban centres where they would automatically be refused the residency permit, propiska . This has resulted in many residential communities established at 101 km 63 mi away from city borders. Such cities and towns would have unusually large former inmates populations. In modern Russia, the restrictions have been abolished and the expression is used in a context similar to that of boondocks . See also Eastern Bloc emigration and defection References http books.google.com books?id s1kQQgCMHPIC&pg PA193&lpg PA193&dq 101 kilometer law Soviet&source web&ots F8wWnOa21W&sig 23qkC0qvYb3HEbcl21Qg0sMZW28&hl en&sa X&oi book result&resnum 7&ct result PPA193,M1 Mass uprisings in the USSR Protest and Rebellion in the Post Stalin Years , by Vladimir A. Kozlov and Elaine McClarnand MacKinnon, M.E. Sharpe , 2002. http books.google.com books?id Wrojkhrj0VIC&pg PA15&lpg PA15&dq 101 kilometer law Soviet&source web&ots nfpWolm5cq&sig 3CfpWktxp1ZZ4RgjiuAdoUGp0ik&hl en&sa X&oi book result&resnum 2&ct result The Decline and Fall of the Soviet Empire Forty Years That Shook the World , by Fred Coleman, Macmillan , 1997. Soviet stub criminal law stub Category Soviet law Category Soviet phraseology Category Crime in the Soviet Union cs 101. kilometr et 101. kilomeeter es Kil metro 101 lt 101 as kilometras pl 101 km ro Al o sut unulea kilometru ru 101 uk 101 ... more details
Unreferenced date December 2006 A tower array is an arrangement of multiple Radio masts and towers radio tower s which are mast radiator s in a phased array . Tower arrays can consist of free standing or guyed towers or a mix of them. Tower arrays are used to constitute a directional antenna of a mediumwave or longwave radio station . The number of towers in a tower array can vary. In many arrays all towers have the same height, but there are also arrays of towers of different height. The arrangement can vary. For directional antennas with fixed radiation pattern , linear arrangements are preferred, while for switchable directional patterns usually for daytime groundwave versus nighttime skywave , square arrangements are chosen. Examples Tower arrays with guyed masts Longwave transmitter Europe 1 Transmitter Weisskirchen Beidweiler Longwave Transmitter Transmitter Wachenbrunn Transmitter Ismaning VoA Station Tower arrays with free standing towers Junglinster Longwave Transmitter Orfordness transmitting station See also Twin Towers disambiguation directional antenna longwave mediumwave directional array References reflist DEFAULTSORT Tower Array Category Broadcast engineering Category Telecommunications equipment Category Telecommunications infrastructure Category Communication towers Category Radio frequency antenna types Mast stub ... more details
A microphone array is any number of microphone s operating in tandem . There are many applications Systems for extracting voice input from ambient noise level ambient noise notably telephone s, speech recognition systems, hearing aid s Surround sound and related technologies Locating objects by sound acoustic source localization , e.g., military use to locate the source s of artillery fire. Aircraft location and tracking. High fidelity original recordings Typically, an array is made up of omnidirectional microphones distributed about the perimeter of a space, linked to a computer that records and interprets the results into a coherent form. Arrays may also be formed using numbers of very closely spaced microphones. Given a fixed physical relationship in space between the different individual microphone transducer array elements, simultaneous DSP digital signal processor processing of the signals from each of the individual microphone array elements can create one or more virtual microphones. Different algorithms permit the creation of virtual microphones with extremely complex virtual polar patterns and even the possibility to steer the individual lobes of the virtual microphones patterns so as to home in on, or to reject, particular sources of sound. An array of 1020 microphones http cag.csail.mit.edu mic array , the largest in the world, was built by researchers at the Massachusetts Institute of Technology MIT Csail Computer Science and Artificial Intelligence Laboratory . Windows Vista computer operating system has built in support for microphone arrays for increasing the accuracy ... established example of the use of a microphone array in professional sound recording. See also Microphone ... paper about Multichannel Music Recording. http www.aes.org e lib browse.cfm?elib 12288 Hamasaki s square ... providing a simple introduction to http www.labbookpages.co.uk audio beamforming.html microphone array beamforming DEFAULTSORT Microphone Array Category Microphones de Mikrofonarray nl Microfoonarray ... more details
About general theory and electromagnetic phased array the ultrasonic and medical imaging application phased array ultrasonics the optical application phased array optics Image PAVE PAWS Radar Clear AFS Alaska.jpg thumb PAVE PAWS phased array radar in Alaska File Radar RAF Fylingdales.jpg thumb RAF Fylingdales ... Mammut Hoarding radar illustration.png thumb Mammut phased array radar World War II In wave theory , a phased array is an Antenna array electromagnetic array of antennas in which the relative Phase waves ... that the effective radiation pattern of the array is reinforced in a desired direction ... 027 3979.htm Definition of Phased Array . Accessed April 27, 2006. ref An antenna array is a group of multiple ... of the antenna array. Use of the term active antennas is intended to describe elements whose energy ... television antenna , which has multiple elements coupled together. History Phased array transmission ... laureates 1909 braun lecture.pdf Braun s Nobel Prize lecture. The phased array section is on pages 239 240. ref During World War II , Nobel Prize Nobel Laureate Luis Alvarez used phased array transmission ... interferometric radio antennas. In 2007 DARPA researchers announced a 16 element phased array ... Silicon Phased Array Chip Developed at UC San Diego in UCSD News reviewed 02. November 2007 ref ... pattern of the array. A phased array may be used to point a fixed radiation pattern, or to wikt ... was first demonstrated in a phased array antenna at Hughes Aircraft Company, Culver City ... Array, IRE National Convention Record, Part I Antennas and Propagation Microwaves, New York The Institute ... . The phased array is used for instance in optical communication as a wavelength selective demux splitter . For information about active as well as passive phased array radars, see also active electronically scanned array . Broadcasting In broadcast engineering , phased arrays are required to be used ... phased array longwire antenna systems may be employed by private radio enthusiasts to receive longwave ... more details
proposed a weak Monge array is a square n by n matrix which satisfies the Monge property math A i,i A r,s le A i,s A r,i math only for all math 1 le i r,s le n math . Applications A square Monge matrix ... more details
In experiments in which additional factors are not likely to interact with any of the other factors, a saturated array can be used. In a saturated matrix mathematics array , a controllable design of experiments factor is substituted for the interaction of two or more by products. Using a saturated array, a two factor test matrix could be used to test three factors. Using the saturated array allows three factors to be tested in four tests rather than in eight, as would be required by a standard orthogonality orthogonal array. statistics stub Category Design of experiments ... more details
Programming paradigms In computer science , array programming languages also known as vector or multidimensional ... geometric vector s, matrix mathematics matrices , and higher dimensional arrays. Array programming ... be dramatic in certain cases it is not uncommon to find array programming language one liner program ... programming language to provide array programming capabilities. The mnemonic APL refers to the title .... Concepts The fundamental idea behind array programming is that operations apply at once to an entire ... behind array programming actually referring to APL as follows quote most programming languages are decidedly ... derive more efficient algorithm. The basis behind array programming and thinking is to find and exploit ... , array orientation looks to group data and apply a uniform handling. Function rank is an important concept to array programming languages in general, by analogy to tensor rank in mathematics functions ... the dimensionality of an input data array by one or more dimensions. For example, summing over elements collapses the input array by 1 dimension. Uses Array programming is very well suited to implicit ... set MMX and continuing through SSSE3 and 3DNow , which include rudimentary SIMD array capabilities. Array ... or more cores are increasingly common today. Languages maincat Array programming languages The canonical examples of array programming languages are APL programming language APL , J programming ... Program static void Main string args int numbers Array declaration Console.WriteLine Please enter the array size int n int.Parse Console.ReadLine Getting the Array size from user numbers new int n Array Creation for int i 0 i numbers.Length i Reading the Array Elements from user Console.WriteLine ... operations on arrays is both tedious and error prone. In array languages, operations are generalized ... elements as illustrated in the loops above. Within the array programming paradigm, the previous ... input Enter numbers , s , d source without the need to statically decide the array size. Array programming ... more details
multiple issues confusing January 2010 notability January 2010 unreferenced January 2010 orphan July 2010 wikify January 2011 Control Array mostly used in Visual Basic is the collection of controls that programmer put it in form VB Form . Control array is always a single dimensional Array data structure array . Control array is that you can add or delete array elements at run time. With some controls, it is very useful to define control arrays it depends on the application. Control arrays are a convenient way to handle groups of controls that perform a similar function. All of the events available to the single control are still available to the array of controls, the only difference being an argument indicating the index of the selected array element is passed to the event. Hence, instead of writing individual procedures for each control i.e. not using control arrays , you only have to write one procedure for each array. Category BASIC programming language family ... more details
array is an Array data structure array in which most of the elements have the same value known ... array is inefficient for both computation and storage. An array in which there are a large number ... from an empty array position. If we do this, then for array of numbers, it should return zero, and for array of objects, it should return null. A naive implementation of an array may allocate space for the entire array, but in the case where there are few non default values, this implementation is inefficient. Typically the algorithm used instead of an ordinary array is determined by other known features or statistical features of the array for instance, if the sparsity is known in advance, or if the elements ... storing all of the allocated regions in, say a bit array . so what? blank space is not an indexed array sparse or not , indeed Representation Sparse Array can be represented as Sparse Array pos1 val1, pos2 val2,... or br Sparse Array pos1, pos2,... val1, val2,... which yields a sparse array in which values math val i math appear at positions math pos i math . Sparse Array as Linked List An obvious question that might be asked is why we need a linked list to represent a sparse array if we can represent it easily using a normal array. The answer to this question lies in the fact that while representing a sparse array as a normal array, a lot of space is allocated for zero or null elements. For example, consider the following array declaration br double arr 1000 1000 br When we define this array as enough space of 1,000,000 doubles is allocated. As each double requires 8 bytes of memory, this array will require 8 million bytes of memory. Because this is a sparse array, most of its elements will have a value of zero or null . Hence, defining this array will soak up all this space which will result in wastage of memory. An effective way to overcome this problem is to represent the array ..., when a linked list is used, the array elements can be accessed through fewer iterations than in a normal ... more details
In mathematics, a Costas array can be regarded geometry geometrically as a set of n points lying on the Square geometry square s of a n × n checkerboard , such that each row or column contains only one point, and that all of the n n &minus 1 2 displacement vector displacement vector geometric vector s between each pair of dots are distinct. This results in an ideal thumbtack auto ambiguity function , making the arrays useful in applications such as sonar and radar . Costas arrays can be regarded as two dimensional cousins of the one dimensional Golomb ruler construction, and, as well as being of mathematical interest, have similar applications in experimental design and phased array radar engineering. Costas arrays are named after John P. Costas engineer John P. Costas , who first wrote about them in a 1965 technical report. Independently, Edgar Gilbert also wrote about them ... A Costas array may be represented numerically as an n × n array of numbers, where ... it is given that any column has only one point, it is possible to represent an array one dimensionally. For instance, the following is a valid Costas Array of order N 4 class wikitable ... in the set would then be the x coordinate. Observe 2,1,3,4 would describe the aforementioned array ... array , or just Welch array, is a Costas array generated using the following method, first discovered by Edgar Gilbert in 1965 and rediscovered in 1982 by Lloyd R. Welch . The Welch Costas array is constructed ... the array A by math A i,j 1 math if math i equiv g j bmod p math , otherwise 0. The result is a Costas array of size p &minus 1. Example 3 is a primitive element of 5. 3 1 3 3 2 9 4 mod 5 ... Welch array. The transposition of the array is a logarithmic Welch array. The number ... alpha i beta j 1 math , otherwise 0. The result is a Costas array of size q &minus 2. If 1 then the first row and column may be deleted to form another Costas array ... more details
orphan date December 2008 For the DVD magazine, see Array DVD magazine Deleted image removed Image ARRAY magazine.jpg right 150px ARRAY Magazine is a New York based interior design, lifestyle and culture quarterly magazine sponsored by the New York Design Center . It has been published since the winter of 2003 2004. With 40,000 readers, ARRAY is geared toward interior design professionals and their clients. External links http www.arrayny.com ARRAY Homepage Category Interior design Category Quarterly magazines Category Media in New York City Category Publications established in 2003 Category Magazines published in New York art mag stub hu ARRAY Magazine ... more details
File Aerial antenna.JPG thumb right 250px A multiband US television reception antenna Antenna array may refer to Antenna array electromagnetic a group of isotropic radiators such that the currents running through them are of different amplitudes and phases Interferometry Interferometric array of radio telescopes used in radio astronomy Phased array , also known as a smart antenna , an electronically steerable directional antenna typically used in Radar and in wireless communication systems, in view to achieve beamforming , multiple input and multiple output MIMO communication or space time coding Directional array refers to multiple antennas arranged such that the superposition of the electromagnetic waves produce a predictable electromagnetic field. Direction finding Watson Watt .2F Adcock antenna array Watson Watt Adcock antenna array the Watson Watt technique uses two Adcock antenna pairs to perform an amplitude comparison on the incoming signal. References reflist disambig ... more details
In computer architecture , a systolic array is a pipe network arrangement of processing units called ... array is composed of matrix like rows of data processing units called cells. Data processing units ... of a program counter , ref The Paracel GeneMatcher series of systolic array processors do have a program ... immediately after processing. The systolic array is often rectangular where data flows across the array ... streams entering and leaving the ports of the array are generated by auto sequencing memory units, ASMs ... . One matrix math matrix is fed in a row at a time from the top of the array and is passed down the array, the other matrix is fed in a column at a time from the left hand side of the array ... whole row and one whole column. At this point, the result of the multiplication is stored in the array and can now be output a row or a column at a time, flowing down or across the array. ref http web.cecs.pdx.edu mperkows temp May22 0020.Matrix multiplication systolic.pdf Systolic Array Matrix Multiplication ... them. Because the traditional systolic array synthesis methods have been practiced by algebraic ... with asynchronous handshake between DPUs are called wavefront arrays . One well known systolic array ... system has a linear array processor connected by data buses going in both directions. History The systolic array paradigm, data stream driven by data counters, is the counterpart of the von Neumann architecture ... array usually sends and receives multiple data streams, and multiple data counters are needed to generate ... 2 x a n 3 x ... a 1 x a 0 math A linear systolic array in which the processors are arranged in pairs ... Highly specialized for particular applications Difficult to build Super Systolic Array The super systolic array is a generalization of the systolic array. Because the classical synthesis methods ... array the super systolic array. Its application is not restricted to applications with regular ... array. More information about the background may be obtained from the articles about Systolic array ... more details
In MIMO communication systems, array gain means a power gain of transmitted signals that is achieved by using multiple antennas at transmitter and or receiver, with respect to Single Input and Single Output SISO case. It can be simply called power gain . In a broadside array, the array gain is almost exactly proportional to the length of the array. This is the almost always the case provided that the elements of the antenna are not spaced to a point at which large radiation side lobs form in other directions and that the array length exceeds one or two wavelengths. The power gain of a broadside array is nearly independent of the number of broadside elements as long as both of these conditions are met. ref http www.smeter.net daily facts 12 fact5.php ref The two main types of array gain when combining signals are average power of combined signals relative to the individual average power and the diversity gain related to the probability level of outage. The diversity gain is dependent on spacial correlation coefficients between antenna signals. ref Andersen, J.B. , Array gain and capacity for known random channels with multiple element arrays at both ends, Selected Areas in Communications, IEEE Journal on , vol.18, no.11, pp.2172 2178, Nov 2000 doi 10.1109 49.895022 ref Applications In radio astronomy because of background noise from modern communications it is difficult to achieve a good signal to noise ratio. Even for strong astronomical radio emission it is typical for SNR levels to be below 0 decibel. To counter this problem exposure of the antenna to the source over large periods of time are needed just as in visible sky viewing. Array gain is done by using multiple, even dozens of radio receivers to collect as much signal as possible. Robots equipped with antenna arrays have better communication using array gain to eradicate dead spots and reduce interferences. ref Hambling, David. Robots fall into line with the help of sparse array antenna. New Scientist 207 2010 ... more details
Array processing is signal processing of the outputs of an array of sensor s to Enhance the SINR signal to interference plus noise ratio SINR compared to that of a single sensor using conventional or adaptive beamforming . Determine the number of emitting sources, the locations of these sources, their waveforms , and other signal parameters. Track multiple moving sources. Array processing is used in radar ... of using array processing along with an array of sensors is a smaller foot print. The problems associated with array processing include the number of sources used, their direction of arrival s, and their signal ... 13 Array Processing lecture13 lecture13.pdf Spatial Array Processing . Signal and Image Processing Seminar. University of Texas at Austin. ref There are four assumptions in array processing. The first ... medium. The second assumption is that for far field array processing, the radius of propagation is much greater than size of the array and that there is plane wave propagation. The third assumption is that there is a zero ... bevans courses ee381k lectures 13 Array Processing lecture13 lecture13.pdf Spatial Array Processing ... of time are needed just as in visible sky viewing. Array gain is done by using multiple, even dozens ... research facility that was founded in Norway in 1968. NORSAR has been working with array processing ... seismic stations around the world. NORSAR has ongoing work to improve array processing to improve ... 83 Improving IMS array processing.aspx ref See also Phased Array Space Time Adaptive Processing References reflist cite book title Array Signal Processing last1 Johnson first1 D. H. last2 Dudgeon first2 D. E. year 1993 publisher Prentice Hall cite book first1 H. L. last1 Van Trees title Optimum Array .... last2 Viberg url http www.vissta.ncsu.edu publications ahk spm1996.pdf title Two Decades of Array ... accessdate 8 December 2010 S. Haykin and K.J.R. Liu Editors , Handbook on Array Processing and Sensor ... Smart Antennas slides proj sem.pdf array processing courseware DEFAULTSORT Array Processing Category ... more details
Orphan date February 2009 Context date October 2009 A processor array is like a storage array but contains and manages Process computing processing elements instead of storage elements. The processor array should have the following characteristics Should support forty or more processing elements blades per chassis The chassis should support the use of commodity motherboard s The chassis should only backplane power and management capabilities to extend the life of the chassis and reduce chassis change costs Will provide end to end redundant power Each processing element should support two or more redundant virtualized I O connections See also Computer cluster Distributed computing Massively parallel processor array Blade server Category Concurrent computing Category Fault tolerant computer systems tech stub ... more details
Unreferenced date January 2007 In broadcast engineering , directional array refers to an Antenna array electromagnetic antenna array arranged such that the Superposition principle superposition of the electromagnetic wave s produce a predictable electromagnetic field . By spacing 2 or more antenna elements apart, changing the length of the transmission line from the transmitter , varying the power output, and shifting the Phase waves phase , radio Broadcasting broadcasters can shape the area of signal coverage. Geographically close Co channel interference co channel or adjacent channel stations employ directional arrays or a single directional antenna so that other broadcasters may utilize the same or adjacent frequency . In the United States , the Federal Communications Commission offers a first come, first served approach, meaning licenses granted on co channel or adjacent channels must protect the service contour of the previously licensed facility, thus, a directional array may be used to shape the station around existing facilities. DEFAULTSORT Directional Array Category Broadcast engineering Category Radio frequency antenna types pl Szyki kierunkowe Telecomm stub ... more details
Unreferenced date December 2009 A macrocell array is an approach to the design and manufacture of Application specific integrated circuit ASIC s. Essentially, it is a small step up from the otherwise similar gate array , but rather than being a prefabricated array of simple logic gates, the macrocell array is a prefabricated array of higher level logic functions such as Flip flop electronics flip flop s, Arithmetic logic unit ALU functions, Hardware register register s, and the like. These logic functions are simply placed at regular predefined positions and manufactured on a wafer electronics wafer , usually called master slice . Creation of a circuit with a specified function is accomplished by adding metal interconnects to the chips on the master slice late in the manufacturing process, allowing the function of the chip to be customised as desired. Macrocell array master slices are usually prefabricated and stockpiled in large quantities regardless of customer orders. The fabrication according to the individual customer specifications may be finished in a shorter time compared with standard cell or full custom design. The macrocell array approach reduces the Photomask mask costs since fewer custom masks need to be produced. In addition manufacturing test tooling lead time and costs are reduced since the same test fixtures may be used for all macrocell array products manufactured on the same die manufacturing die size. Drawbacks are somewhat low density and performance than other approaches to ASIC design. However this style is often a viable approach for low production volumes. DEFAULTSORT Macrocell Array Category Gate arrays es Matriz de macroc lulas ru ... more details
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