BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/New_York BEGIN:DAYLIGHT DTSTART:20250309T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20251102T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20250416T171526Z UID:A1114F7E-417D-4638-AE64-C531D36F6F7E DTSTART;TZID=America/New_York:20250415T113000 DTEND;TZID=America/New_York:20250415T123000 DESCRIPTION:Abstract: Global Navigation Satellite System Reflectometry (GNS S-R) is a relatively new bistatic radar remote sensing technique which use s GNSS navigation satellites like GPS and Galileo as its transmitter and p rovides its own receiver to measure the navigation signal after it is scat tered from the Earth surface back into space. Modifications to the signal caused by the scattering process contain information about the surface pro perties that can be estimated by analysis of the receiver’s measurements . The detectable properties include surface roughness\, near-surface wind speed over water\, soil moisture\, inland water boundaries\, and surface h eight. A GNSS-R type of radar is particularly attractive because a radar r eceiver alone is generally much smaller\, lighter\, lower power and cheape r than a conventional radar that also includes a transmitter. As a result\ , GNSS-R systems can fly on smaller satellites and constellations of them can be flown to provide more frequent global coverage. This seminar will p rovide an overview of the science and applications possible with a spacebo rne GNSS-R system\, using the NASA CYGNSS constellation of eight small sat ellites as an example. Numerous follow-on GNSS-R missions have either been launched or are currently in development\, and these will also be discuss ed.\n\nBio: Chris Ruf is the Fredrick Bartman Collegiate Professor of Clim ate and Space Science at the University of Michigan. He received the B.A. degree in Physics from Reed College and the Ph.D. in Electrical and Comput er Engineering from the University of Massachusetts\, and has previously w orked at the NASA Jet Propulsion Laboratory and Penn State University. Pro f. Ruf’s research interests involve microwave remote sensing of the Eart h environment\, with a focus on ocean and atmosphere applications and sens or technology development. He is Principal Investigator of the NASA Cyclon e Global Navigation Satellite System mission. Prof. Ruf has served on the U.S. National Academy of Sciences Committee on Earth Science and Applicati ons from Space and on their 2006 and 2016 Earth Science Decadal Survey Pan els. He is a Fellow of the IEEE and the American Meteorological Society an d a former Editor-in-Chief of the IEEE Transactions on Geoscience and Remo te Sensing.\n\nCo-sponsored by: ElectroScience laboratory\n\nSpeaker(s): C hris\, \n\nRoom: 132\, Bldg: ElectroScience Laboratory\, 132 MRC-New Bldg. Conference Room\, 1330 Kinnear Rd\, Columbus\, Ohio\, United States\, 432 12\, Virtual: https://events.vtools.ieee.org/m/479558 LOCATION:Room: 132\, Bldg: ElectroScience Laboratory\, 132 MRC-New Bldg. Co nference Room\, 1330 Kinnear Rd\, Columbus\, Ohio\, United States\, 43212\ , Virtual: https://events.vtools.ieee.org/m/479558 ORGANIZER:nahar.2@osu.edu SEQUENCE:2 SUMMARY:GNSS-R Science and Applications and the NASA CYGNSS Mission URL;VALUE=URI:https://events.vtools.ieee.org/m/479558 X-ALT-DESC:Description: <br /><p class="MsoNoSpacing" style="text-align: ju stify\;"><strong><span style="font-size: 14.0pt\; mso-ascii-font-family: ' Times New Roman'\; mso-ascii-theme-font: major-bidi\; mso-hansi-font-famil y: 'Times New Roman'\; mso-hansi-theme-font: major-bidi\; mso-bidi-font-fa mily: 'Times New Roman'\; mso-bidi-theme-font: major-bidi\;">Abstract</spa n></strong><strong><span style="mso-ascii-font-family: 'Times New Roman'\; mso-ascii-theme-font: major-bidi\; mso-hansi-font-family: 'Times New Roma n'\; mso-hansi-theme-font: major-bidi\; mso-bidi-font-family: 'Times New R oman'\; mso-bidi-theme-font: major-bidi\;">:</span></strong><span style="m so-ascii-font-family: 'Times New Roman'\; mso-ascii-theme-font: major-bidi \; mso-hansi-font-family: 'Times New Roman'\; mso-hansi-theme-font: major- bidi\; mso-bidi-font-family: 'Times New Roman'\; mso-bidi-theme-font: majo r-bidi\;"> </span><span style="color: #212121\; background: white\;">Globa l Navigation Satellite System Reflectometry (GNSS-R) is a relatively new b istatic radar remote sensing technique which uses GNSS navigation satellit es like GPS and Galileo as its transmitter and provides its own receiver t o measure the navigation signal after it is scattered from the Earth surfa ce back into space. Modifications to the signal caused by the scattering p rocess contain information about the surface properties that can be estima ted by analysis of the receiver&rsquo\;s measurements. The detectable prop erties include surface roughness\, near-surface wind speed over water\, so il moisture\, inland water boundaries\, and surface height. A GNSS-R type of radar is particularly attractive because a radar receiver alone is gene rally much smaller\, lighter\, lower power and cheaper than a conventional radar that also includes a transmitter. As a result\, GNSS-R systems can fly on smaller satellites and constellations of them can be flown to provi de more frequent global coverage. This seminar will provide an overview of the science and applications possible with a spaceborne GNSS-R system\, u sing the NASA CYGNSS constellation of eight small satellites as an example . Numerous follow-on GNSS-R missions have either been launched or are curr ently in development\, and these will also be discussed.</span></p>\n<p cl ass="MsoNoSpacing" style="text-align: justify\;"><strong style="mso-bidi-f ont-weight: normal\;"><span style="font-size: 14.0pt\; mso-ascii-font-fami ly: 'Times New Roman'\; mso-ascii-theme-font: major-bidi\; mso-hansi-font- family: 'Times New Roman'\; mso-hansi-theme-font: major-bidi\; mso-bidi-fo nt-family: 'Times New Roman'\; mso-bidi-theme-font: major-bidi\;">Bio</spa n></strong><strong style="mso-bidi-font-weight: normal\;"><span style="mso -ascii-font-family: 'Times New Roman'\; mso-ascii-theme-font: major-bidi\; mso-hansi-font-family: 'Times New Roman'\; mso-hansi-theme-font: major-bi di\; mso-bidi-font-family: 'Times New Roman'\; mso-bidi-theme-font: major- bidi\;">:</span></strong><span style="mso-ascii-font-family: 'Times New Ro man'\; mso-ascii-theme-font: major-bidi\; mso-hansi-font-family: 'Times Ne w Roman'\; mso-hansi-theme-font: major-bidi\; mso-bidi-font-family: 'Times New Roman'\; mso-bidi-theme-font: major-bidi\;"> </span><span style="colo r: #212121\; background: white\;">Chris Ruf is the Fredrick Bartman Colleg iate Professor of Climate and Space Science at the University of Michigan. He received the B.A. degree in Physics from Reed College and the Ph.D. in Electrical and Computer Engineering from the University of Massachusetts\ , and has previously worked at the NASA Jet Propulsion Laboratory and Penn State University. Prof. Ruf&rsquo\;s research interests involve microwave remote sensing of the Earth environment\, with a focus on ocean and atmos phere applications and sensor technology development. He is Principal Inve stigator of the NASA Cyclone Global Navigation Satellite System mission. P rof. Ruf has served on the U.S. National Academy of Sciences Committee on Earth Science and Applications from Space and on their 2006 and 2016 Earth Science Decadal Survey Panels. He is a Fellow of the IEEE and the America n Meteorological Society and a former Editor-in-Chief of the IEEE Transact ions on Geoscience and Remote Sensing.</span></p> END:VEVENT END:VCALENDAR