RTE-Staytuned-October 2014 WEB
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Overview of Sensors for Applications
OVERVIEW OF SENSORS FOR APPLICATIONS Deepak Putrevu Head, MTDD/AMHTDG EM SPECTRUM Visible 0.4-0.7μm Near infrared (NIR) 0.7-1.5μm Optical Infrared Shortwave infrared (SWIR) 1.5-3.0μm Mid-wave infrared (MWIR) 3.0-8.0μm (OIR) Region Longwave IR(LWIR)/Thermal IR(TIR) 8.0-15μm Far infrared (FIR) Beyond15μm Gamma Rays X Rays UV Visible NIR SWIR Thermal IR Microwave P-band: ~0.25 – 1 GHz Microwave Region L-band: 1 -2 GHz S-band: 2-4 GHz •Sensors are 24x365 C-band: 4-8 GHz •Signal data characteristics X-band: 8-12 GHz unique to the microwave region of the EM spectrum Ku-band: 12-18 GHz K-band: 18-26 GHz •Response is primarily governed by geometric Ka-band: 26-40 GHz structures and hence V-band: 40 - 75 GHz complementary to optical W-band: 75-110 GHz imaging mm-wave: 110 – 300GHz Basic Interactions between Electromagnetic Energy and the Earth’s Surface Incident Power reflected, ρP Reflectivity: The fractional part of the radiation, P incident radiation that is reflected by the surface. Power absorbed, αP Absorptivity: the fractional part of the = Power emitted, εP incident radiation that is absorbed by the surface. Power transmitted, τP Emissivity: The ratio of the observed flux emitted by a body or surface to that of a P= Pr + Pt + Pa blackbody under the same condition. 푃 푃 푃 푟 + 푡 + 푎 = 1 푃 푃 푃 Transmissivity: The fractional part of the ρ + τ + α =1 radiation transmitted through the medium. At thermal equilibrium, absorption and emission are the same. -
Digital Radio Broadcasting Network in the Arctic Region
______________________________________________________PROCEEDING OF THE 24TH CONFERENCE OF FRUCT ASSOCIATION Digital Radio Broadcasting Network in the Arctic Region Oleg Varlamov, Vladimir Varlamov, Anna Dolgopyatova Moscow Technical University of Communications and Informatics Moscow, Russia [email protected], [email protected], [email protected] Abstract—Successful economic development of the Arctic 81°), where the geostationary orbit (GEO) is observed very low zone is impossible without creating a continuous information field above the horizon and only a small portion of it is visible, that covers its entire territory and is available not only at where the satellites of the required operator are not always stationary objects, but primarily in moving vehicles - ships, cars, present, providing information fields using satellites located on airplanes, etc. This information field must consist from the GEO is not possible. Approximately from 81 ° to the poles transmission of audio information (broadcasting programs), data (weather maps, ice conditions, etc.), navigation signals, alerts and GEO from the surface of the Earth is not visible even information about emergencies, and must be reserved from theoretically. different sources. As a backup system (and in the coming years, The most promising for the formation of the main the main one) it is advisable to use single-frequency digital information field in the Arctic zone can be considered satellite broadcasting networks of the Digital Radio Mondiale standard in the low frequency range. This is the most economical system for systems in highly elliptical (HEO) or low Earth (LEO) orbits. covering remote areas. For the use of these systems, have all the At the same time, the high cost of such systems, the long period necessary regulatory framework and standard high-efficiency of infrastructure deployment and the limited lifespan, combined radio transmitters. -
High-Frequency Radiowa Ve Probing of the High-Latitude Ionosphere
RAYMOND A. GREENWALD HIGH-FREQUENCY RADIOWAVE PROBING OF THE HIGH-LATITUDE IONOSPHERE During the past several years, a program of high-frequency radiowave studies of the high-latitude ionosphere has been developed in the APL Space Department. Studies are now being conducted on the formation and motion of high-latitude ionospheric electron density irregularities, using a sophisti cated high-frequency radar system installed at Goose Bay, .Labrador. The radar antenna is also being used to receive signals from a beacon transmitter located at Thule, Greenland. This information is providing a better understanding of the spatial and temporal variability of high-latitude propagation channels and their relationship to disturbances in the magnetosphere-ionosphere system . INTRODUCTION turbances prior to their impingement on the magneto At altitudes above 100 kilometers, the atmosphere sphere is quite limited. Therefore, we still have only of the earth gradually changes from a predominantly limited success in forecasting sudden changes in the neutral medium to an increasingly ionized gas or plas high-latitude ionosphere and consequently in high ma. The ionization is caused chiefly by a combination latitude radiowave propagation. of solar extreme ultraviolet radiation and, at high lati In order for space scientists to obtain a better un tudes, particle precipitation from the earth's magne derstanding of the various interactions occurring tosphere. Because of its ionized nature between 100 among the solar wind, the magnetosphere, and the ion and 1000 kilometers, this part of the atmosphere is osphere, active measurement programs are conduct commonly referred to as the ionosphere. In this re ed in all three regions. -
Portable Shortwave Receivers
Portable Shortwave Receivers ● Longwave, AM, FM and Shortwave ELITE SATELLIT ● VHF Air Band ● HD Radio Reception ● RDS Display ● Superior Sensitivity and Selectivity ● Dual Conversion Design ● Huge 5.7 Inch Backlit Display ● Drift-free Digital Phase Lock Loop ● Direct Frequency and Band Entry ● Single Sideband Synchronous Detector ● Selectable Bandwidths ● High Dynamic Range ● Dual Programmable Clocks ● Dual Event Programmable Timers ● Stereo Line Level Input ● Stereo Line Level Output ● Earphone Jack ● Separate Bass and Treble Controls ● Adjustable AGC: Fast or Slow ● Telescopic Antenna AM/FM/SW ● Battery (4xD) or Included AC Adapter ● Scan and Search ● 1700 Total Memories (500 alphanumeric) ● Deluxe Carry Bag The Elite Satellit is simply the finest full-sized portable in the world. The Elite Satellit is an elegant confluence of performance, features and capabilities. The look, feel and finish of this radio is superb. The solid, quality feel is second to none. The digitally synthesized, dual conversion shortwave tuner covers all long wave, mediums wave (AM) and shortwave frequencies. HD Radio improves audio fidelity and adds additional programming without a subscription fee. Adjacent frequency interference can be minimized or eliminated with a choice of three bandwidths [7.0, 4.0, 2.5 kHz]. The sideband selectable Synchronous AM Detector further minimizes adjacent frequency interference and reduces fading distortion of AM signals. IF Passband Tuning is yet another advanced feature that functions in AM and SSB modes to reject interference. AGC is selectable at fast or slow. High dynamic range permits the detection of weak signals in the presence of strong signals. All this coupled with great sensitivity will bring in stations from every part of the globe. -
Hans Knot International Radio Report April 2016 Welcome to Another
Hans Knot International Radio Report April 2016 Welcome to another edition of the International Radio Report. Thanks all for your e mails, memories, photos, questions and more. Part of the report is what was left after the March edition was totally filled and so let’s go with this edition in which first there’s space for a story I wrote last months after again doing some research: ‘Ronan O’Rahilly, Georgie Fame and the Blue Fames. Where it really went wrong!’ On this subject I’ve written before but let’s go back in time and also add some new facts to it: ‘Was Ronan O’Rahilly the manager of Georgie Fame?’ I can tell you there was a problem with an important instrument. When in April 1964 Granada Television came with an edition of the ‘World in action’ series, which was a production from Michael Hodges, they informed the television public about a new form of Piracy, the watery pirates. Two radio ships bringing music and entertainment under the names of Radio Caroline and Radio Atlanta. Radio Caroline was the first 20th century Pirate off the British coast with programs, at that stage, for 12 hours a day. Interviews with the Caroline people were made in the offices of Queen Magazine in the city of London and included – among others – Jocelyn Stevens and the then 23-year old Irish Ronan O’Rahilly. During this documentary it became known, which we would also read in several newspapers in the then following weeks, that Ronan O’Rahilly had started his radiostation Caroline as he couldn’t get his artists played on stations like Radio Luxembourg. -
Downloaded 09/25/21 09:30 PM UTC
1434 JOURNAL OF HYDROMETEOROLOGY VOLUME 9 NASA Cold Land Processes Experiment (CLPX 2002/03): Local Scale Observation Site ϩ JANET HARDY,* ROBERT DAVIS,* YEOHOON KOH,* DON CLINE, KELLY ELDER,# RICHARD ARMSTRONG,@ HANS-PETER MARSHALL,@ THOMAS PAINTER,& ϩϩ GILLES CASTRES SAINT-MARTIN,** ROGER DEROO,** KAMAL SARABANDI,** TOBIAS GRAF, ϩϩ TOSHIO KOIKE, AND KYLE MCDONALD## *Cold Regions Research and Engineering Laboratory, Engineer Research and Development Center, U.S. Army Corps of Engineers, Hanover, New Hampshire ϩNOAA/NWS/National Operational Hydrologic Remote Sensing Center, Chanhassen, Minnesota #USDA Forest Service, Fort Collins, Colorado @University of Colorado, Boulder, Colorado &University of Utah, Salt Lake City, Utah **University of Michigan, Ann Arbor, Michigan ϩϩUniversity of Tokyo, Tokyo, Japan ##NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California (Manuscript received 12 January 2007, in final form 19 March 2008) ABSTRACT The local scale observation site (LSOS) is the smallest study site (0.8 ha) of the 2002/03 Cold Land Processes Experiment (CLPX) and is located within the Fraser mesocell study area. It was the most intensively measured site of the CLPX, and measurements here had the greatest temporal component of all CLPX sites. Measurements made at the LSOS were designed to produce a comprehensive assessment of the snow, soil, and vegetation characteristics viewed by the ground-based remote sensing instruments. The objective of the ground-based microwave remote sensing was to collect time series of active and passive microwave spectral signatures over snow, soil, and forest, which is coincident with the intensive physical characterization of these features. Ground-based remote sensing instruments included frequency modulated continuous wave (FMCW) radars operating over multiple microwave bandwidths; the Ground-Based Mi- crowave Radiometer (GBMR-7) operating at channels 18.7, 23.8, 36.5, and 89 GHz; and in 2003, an L-, C-, X- and Ku-band scatterometer radar system. -
Irish Landscape Names
Irish Landscape Names Preface to 2010 edition Stradbally on its own denotes a parish and village); there is usually no equivalent word in the Irish form, such as sliabh or cnoc; and the Ordnance The following document is extracted from the database used to prepare the list Survey forms have not gained currency locally or amongst hill-walkers. The of peaks included on the „Summits‟ section and other sections at second group of exceptions concerns hills for which there was substantial www.mountainviews.ie The document comprises the name data and key evidence from alternative authoritative sources for a name other than the one geographical data for each peak listed on the website as of May 2010, with shown on OS maps, e.g. Croaghonagh / Cruach Eoghanach in Co. Donegal, some minor changes and omissions. The geographical data on the website is marked on the Discovery map as Barnesmore, or Slievetrue in Co. Antrim, more comprehensive. marked on the Discoverer map as Carn Hill. In some of these cases, the evidence for overriding the map forms comes from other Ordnance Survey The data was collated over a number of years by a team of volunteer sources, such as the Ordnance Survey Memoirs. It should be emphasised that contributors to the website. The list in use started with the 2000ft list of Rev. these exceptions represent only a very small percentage of the names listed Vandeleur (1950s), the 600m list based on this by Joss Lynam (1970s) and the and that the forms used by the Placenames Branch and/or OSI/OSNI are 400 and 500m lists of Michael Dewey and Myrddyn Phillips. -
List of Irish Mountain Passes
List of Irish Mountain Passes The following document is a list of mountain passes and similar features extracted from the gazetteer, Irish Landscape Names. Please consult the full document (also available at Mountain Views) for the abbreviations of sources, symbols and conventions adopted. The list was compiled during the month of June 2020 and comprises more than eighty Irish passes and cols, including both vehicular passes and pedestrian saddles. There were thousands of features that could have been included, but since I intended this as part of a gazetteer of place-names in the Irish mountain landscape, I had to be selective and decided to focus on those which have names and are of importance to walkers, either as a starting point for a route or as a way of accessing summits. Some heights are approximate due to the lack of a spot height on maps. Certain features have not been categorised as passes, such as Barnesmore Gap, Doo Lough Pass and Ballaghaneary because they did not fulfil geographical criteria for various reasons which are explained under the entry for the individual feature. They have, however, been included in the list as important features in the mountain landscape. Paul Tempan, July 2020 Anglicised Name Irish Name Irish Name, Source and Notes on Feature and Place-Name Range / County Grid Ref. Heig OSI Meaning Region ht Disco very Map Sheet Ballaghbeama Bealach Béime Ir. Bealach Béime Ballaghbeama is one of Ireland’s wildest passes. It is Dunkerron Kerry V754 781 260 78 (pass, motor) [logainm.ie], ‘pass of the extremely steep on both sides, with barely any level Mountains ground to park a car at the summit. -
Day 213 – 24Th November 2000
THE HEARING RESUMED ON THE 24TH OF NOVEMBER, 2000, AS FOLLOWS: . CHAIRMAN: Good morning everyone. MR. HANRATTY: The next witness, Sir, will be Mr. Michael Laffan. Mr. Laffan please. 00002 . MICHAEL LAFFAN, HAVING BEEN SWORN, WAS EXAMINED BY MR. HANRATTY, AS FOLLOWS: . 1 Q. MR. HANRATTY: Good morning, Mr. Laffan. A. Good morning. 2 Q. Mr. Laffan, I believe that you were the Chief Executive of Century Communications Limited? A. That's correct. 3 Q. And am I correct in thinking that you commenced on the 1st of May of 1989 in that capacity? A. That is correct. I commenced on the 1st of May. 4 Q. And did you - were you engaged by Century Communications Limited on the basis of a three year contract? A. That is also contract. I had a three year contract with Century Communications Limited. 5 Q. Am I correct in thinking that you were, in fact, approached by somebody on behalf of Century to see if you would be interested in the position? A. Yes, that's correct. I was approached during February and March of 1989 at a time at which I was already well settled in an existing position with an international company. 6 Q. Was that Electrolux? A. Yes, I was Managing Director of the Electrolux Group in Ireland and had been for a number of years. 7 Q. Yes. Can I just briefly ask you what position do you now hold? A. I am now a company director. 8 Q. Yes. Can you just briefly tell us what you understood your duties and responsibilities would be in your capacity 00003 as Chief Executive of this company? A. -
14/Mg/21 Ms 73 Ct Gb
25292000 8/10/1997 11:04 Page 2 T 5173 GF AND V 51 NB COLOUR TELEVISION with nicam digital stereo sound and fastext T 5173 GF/V 51 NB GB 8/10/1997 11:07 Page 2 MAINS CONNECTION AND REMOTE BATTERIES MAINS CONNECTION The TV is suitable for use on a.c. mains supply, 220-240V, 50 Hz only. It must not be connected to d. c. mains. NOTE : The mains lead of the TV is fitted with a moulded plug. If the mains sockets are not compatible or if for any reason the plug is removed please follow these directions : The moulded plug cannot be rewired and if removed must be disposed of safely. 5A fuse DO NOT under any circumstances plug the severed plug into any mains socket as this could result in electric shock. IMPORTANT : If the plug is removed rewire new plug as follows : The wires in the mains plug are coloured in accordance with the following code : BLUE - NEUTRAL BROWN - LIVE As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows : BLUE wire to the terminal coded N (Neutral) or coloured black. BROWN wire to the terminal coded L (Live) or coloured red. DO NOT make any connection to the terminal in the plug which is marked by the letter E or by the safety earth symbol or coloured green or green and yellow. A fused plug must be fitted with a 5A fuse approved by ASTA or BSI to BS 1362 and fuse covers must always be securely replaced. -
All Time Compilation Logbook by Date/Time
SKYWAVES Produced by: The British FM & TV Circle 15 Boarhill Grove DX Loggings, News Ashfield Park and Information for SUTTON-IN-ASHFIELD FM & TV DXers Nottinghamshire NG17 1HF All Time Compilation Logbook FREQ TIME DATE ITU STATION RDS CODE SIGNAL M RP 87.6 1998 D BR-4, Dillberg. D314 M JF 87.6 1998 D NDR-2, Hamburg. D382 M JF 87.6 - - - - reg G Rinse FM, Slough. pirate. Different to 100.3 Rinse FM 8760 RINSE_FM v strong GMH 87.6 HNG Slager R, Gyor (presumed) B206 M JF 87.6 1998 HNG Slager Radio, Gyšr. _SLAGER_ MJF 87.6 1998 NOR NRK Hedmark, Nordhue. F701 NRK_HEDM MJF 87.6 1998 S SR-1, 3 high power sites. E201 -SR_P1-_ MJF 87.6 SVN R Slovenia 202, un-id site. 63A2 M JF 87.7 D MDR Kultur, Chemnitz D3C3 M PW 87.7 1998 D MDR Kultur, Chemnitz. D3C3 M JF 87.7 1998 D NDR-4, Flensburg. D384 M JF 87.7 reg reg/1997 F France Culture, Strasbourg. Frequently pops up on meteor scatter. _CULTURE v good M JF Some very good peaks in May, up to 2 seconds. 87.7 1998 F France Culture, Strasbourg. F202 _CULTURE MJF 87.7 1998 FNL YLE-1, Eurajoki most likely, though other txÕs also here. 6201 M JF 87.7 ---- 1998 G Student RSL station in Lincoln? Regular. Many ID's & students! fair T JF 87.7 1998 I R Company? un-id site. 5350 M JF 87.7 1998 S SR-1, Halmastad. E201 M JF 87.7 1998 SVK Fun R Bratislava, Kosice. -
Irish Hill and Mountain Names
Irish Hill and Mountain Names The following document is extracted from the database used to prepare the list where Stradbally on its own denotes a parish and village); there is usually no of peaks included on the „Summits‟ section and other sections at equivalent word in the Irish form, such as sliabh or cnoc; and the Ordnance www.mountainviews.ie The document comprises the name data and key Survey forms have not gained currency locally or amongst hill-walkers. The geographical data for each peak listed on the website as of May 2010, with second group of exceptions concerns hills for which there was substantial some minor changes and omissions. The geographical data on the website is evidence from alternative authoritative sources for a name other than the one more comprehensive. shown on OS maps, e.g. Croaghonagh / Cruach Eoghanach in Co. Donegal, marked on the Discovery map as Barnesmore, or Slievetrue in Co. Antrim, The data was collated over a number of years by a team of volunteer marked on the Discoverer map as Carn Hill. In some of these cases, the contributors to the website. The list in use started with the 2000ft list of Rev. evidence for overriding the map forms comes from other Ordnance Survey Vandeleur (1950s), the 600m list based on this by Joss Lynam (1970s) and the sources, such as the Ordnance Survey Memoirs. It should be emphasised that 400 and 500m lists of Michael Dewey and Myrddyn Phillips. Extensive revision these exceptions represent only a very small percentage of the names listed and extra data has been accepted from many MV contributors including Simon and that the forms used by the Placenames Branch and/or OSI/OSNI are Stewart, Brian Ringland, Paul Donnelly, John FitzGerald, Denise Jacques, Colin adopted here in all other cases.