{"id":24431,"date":"2022-11-26T18:43:34","date_gmt":"2022-11-26T10:43:34","guid":{"rendered":"https:\/\/wp-productionenv-bjg9h2g2bgg5b8aa.southeastasia-01.azurewebsites.net\/news\/isro-launches-ocean-research-satellite-aboard-pslv\/"},"modified":"2022-11-26T18:43:34","modified_gmt":"2022-11-26T10:43:34","slug":"isro-launches-ocean-research-satellite-aboard-pslv","status":"publish","type":"post","link":"https:\/\/starpath.global\/news\/isro-launches-ocean-research-satellite-aboard-pslv\/","title":{"rendered":"ISRO launches ocean research satellite aboard PSLV"},"content":{"rendered":"<p>India launched a new ocean monitoring satellite on Saturday morning, using its PSLV rocket to deliver the EOS-06 spacecraft into a low Earth orbit. The mission, PSLV C54, lifted off from the Satish Dhawan Space Centre at 11:56 local time (06:26 UTC).<\/p>\n<\/p>\n<p>EOS-06, also known as Oceansat-3, is the latest in a series of satellites operated by the Indian Space Research Organisation (ISRO) since 2009 to study and monitor Earth\u2019s oceans. It will replace Oceansat-2, which was launched in Sept. 2009, continuing its work and bringing enhanced capabilities to the role.<\/p>\n<p>The satellite\u2019s primary role is to monitor the color of the ocean surface and to collect data on wind speed and direction over the surface. This allows scientists to monitor conditions, such as the distribution of chlorophyll in the world\u2019s seas, phytoplankton blooming, and chemicals and minerals present in the water. As well as being of scientific interest, this research has practical applications, such as helping to locate suitable fishing grounds.<\/p>\n<p>The EOS-06 mission is part of ISRO\u2019s Earth Observing Satellite (EOS) series, which covers many of the agency\u2019s current and upcoming Earth science missions. With EOS, ISRO has returned to its former practice of naming all such missions under a single umbrella \u2014 which it previously did under the Indian Remote Sensing (IRS) program before separating out individual projects in the late 1990s.<\/p>\n<\/p>\n<p><iframe title=\"Launch of PSLV-C54\/EOS-06 Mission from Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota\" src=\"https:\/\/www.youtube.com\/embed\/hHfDIMb37wM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"\" name=\"fitvid0\" data-gtm-yt-inspected-14=\"true\" data-gtm-yt-inspected-21=\"true\"><\/iframe><\/p>\n<p>The 1,117-kilogram EOS-06 satellite is equipped with four payloads. Its primary sensor is the Ocean Color Monitor 3 (OCM-3), a successor to the OCM-2 instrument on Oceansat-2. OCM-3 is a 13-band multispectral imaging system capable of recording images of the Earth at a resolution of 360 meters across 10 visible-light bands, with a lower resolution of around 1.4 kilometers available across the three additional bands in the near-infrared.<\/p>\n<h4 class=\"widget-title penci-border-arrow\">See Also<\/h4>\n<ul>\n<li>EOS-06\/PSLV C54 Updates<\/li>\n<li>NSF Store<\/li>\n<li>ISRO Forum Section<\/li>\n<li>Click here to Join L2<\/li>\n<\/ul>\n<p>The Sea Surface Temperature Monitor (SSTM) is an infrared imaging instrument that will be used to study the temperature of the ocean surface. It is a new instrument for Oceansat-3 compared to its predecessors, and its 1,440-kilometer swath width allows EOS-06 to record daily global temperature data at a 1.08-kilometer resolution.<\/p>\n<p>Space Shuttle models<path d=\"M7.59009 18.59L9.00009 20L17.0001 12L9.00009 4L7.59009 5.41L14.1701 12\" style=\"animation: initial !important; background: initial !important; border: 0px !important; box-shadow: none !important; color: inherit !important; cursor: inherit !important; direction: inherit !important; display: inline !important; fill: currentcolor !important; filter: initial !important; float: none !important; margin: 0px !important; opacity: initial !important; outline: 0px !important; overflow: initial !important; padding: 0px !important; stroke: initial !important; transform: initial !important; vertical-align: initial !important; visibility: inherit !important;\"><\/path>SpaceX launch tickets<path d=\"M7.59009 18.59L9.00009 20L17.0001 12L9.00009 4L7.59009 5.41L14.1701 12\" style=\"animation: initial !important; background: initial !important; border: 0px !important; box-shadow: none !important; color: inherit !important; cursor: inherit !important; direction: inherit !important; display: inline !important; fill: currentcolor !important; filter: initial !important; float: none !important; margin: 0px !important; opacity: initial !important; outline: 0px !important; overflow: initial !important; padding: 0px !important; stroke: initial !important; transform: initial !important; vertical-align: initial !important; visibility: inherit !important;\"><\/path>Astronomy<path d=\"M7.59009 18.59L9.00009 20L17.0001 12L9.00009 4L7.59009 5.41L14.1701 12\" style=\"animation: initial !important; background: initial !important; border: 0px !important; box-shadow: none !important; color: inherit !important; cursor: inherit !important; direction: inherit !important; display: inline !important; fill: currentcolor !important; filter: initial !important; float: none !important; margin: 0px !important; opacity: initial !important; outline: 0px !important; overflow: initial !important; padding: 0px !important; stroke: initial !important; transform: initial !important; vertical-align: initial !important; visibility: inherit !important;\"><\/path>\n<p>     (adsbygoogle = window.adsbygoogle || []).push({});<\/p>\n<p>The Scatterometer for Oceansat-3, or OSCAT-3, is used to monitor ocean winds. The scatterometer will emit a radio beam in the Ku-band at a frequency of 13.515 gigahertz and record how the signal is backscattered. The power of the backscattered signal is affected by the speed and direction of the wind, so by analyzing the results, a set of wind vectors can be established across the ocean\u2019s surface.<\/p>\n<p>In addition to these sensors, EOS-06 also carries the Advanced Data Collection System 4 (ARGOS-4) payload for the French space agency, CNES. ARGOS is a communications payload that will be used to receive and relay data transmitted by remote research stations and data collection platforms around the world.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" aria-describedby=\"caption-attachment-90094\" class=\"size-full wp-image-90094\" src=\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/eos-6-prelaunch.jpg\" alt=\"\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/eos-6-prelaunch.jpg 1280w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/eos-6-prelaunch-350x197.jpg 350w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/eos-6-prelaunch-622x350.jpg 622w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/eos-6-prelaunch-768x432.jpg 768w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/eos-6-prelaunch-1170x658.jpg 1170w\" sizes=\"(max-width: 1280px) 100vw, 1280px\"><\/p>\n<p id=\"caption-attachment-90094\" class=\"wp-caption-text\">The EOS-06 satellite being prepared for launch. (Credit: ISRO)<\/p>\n<p>Joining EOS-06 for the journey into orbit were eight secondary payloads \u2014 smaller satellites hitching a ride aboard the same rocket. The largest of these is Indian Nanosatellite 2B (INS-2B), with a mass of 18.28 kilograms. Also named BhutanSat, it has been built in partnership between ISRO and the Kingdom of Bhutan. It carries a multispectral imager, NanoMx, and a data repeater.<\/p>\n<p>Anand, or Pixxel-TD 1, is an Earth observation satellite developed by commercial operator Pixxel. A 16.51-kilogram satellite, it will serve as a prototype and precursor to a large constellation of imaging satellites that Pixxel plans to deploy in the future. Anand will allow Pixxel to test the constellation\u2019s hyperspectral imager in orbit.<\/p>\n<p>A pair of Thybolt satellites, Thybolt-1 and -2, were carried for India\u2019s Dhruva Space. These are tiny 0.5-unit CubeSats, measuring 10 by 10 by 5 centimeters, with a combined mass of 1.45 kilograms. The satellites carry a store-and-forward messaging system for use by amateur radio enthusiasts, with the satellite collecting messages uplinked by users and downlinking them to be uploaded to a website. Built around P-DoT, a CubeSat bus developed by Dhruval Space, the satellites will also aim to test and validate this platform in space.<\/p>\n<p>PSLV carried four satellites for Swiss communications company Astrocast. The four Astrocast 0.3 satellites will continue the company\u2019s research and development work as it moves towards deploying a large constellation of satellites to relay machine-to-machine (M2M) communications. These low-data-rate services, operating in the L-band, are designed to allow internet of things (IoT) devices to communicate anywhere in the world. The four Astrocast satellites are three-unit CubeSats and have a combined mass of 17.92 kilograms.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-90095\" class=\"size-full wp-image-90095\" src=\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_pad2-scaled.jpg\" alt=\"\" width=\"2560\" height=\"1707\" srcset=\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_pad2-scaled.jpg 2560w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_pad2-350x233.jpg 350w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_pad2-525x350.jpg 525w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_pad2-768x512.jpg 768w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_pad2-1920x1280.jpg 1920w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_pad2-1170x780.jpg 1170w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_pad2-585x390.jpg 585w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_pad2-263x175.jpg 263w\" sizes=\"(max-width: 2560px) 100vw, 2560px\"><\/p>\n<p id=\"caption-attachment-90095\" class=\"wp-caption-text\">PSLV C54 at the launch pad prior to Saturday\u2019s mission. (Credit: ISRO)<\/p>\n<p>ISRO used its Polar Satellite Launch Vehicle (PSLV) rocket to deploy EOS-06 and its co-passengers into a low Earth orbit. First flown in September 1993, PSLV is ISRO\u2019s workhorse, having flown 55 missions before Saturday\u2019s launch. A four-stage rocket using a combination of solid and liquid-propellant stages, it can fly in several different configurations \u2014 varying the type and number of strap-on boosters attached to the first stage \u2014 depending on required mission performance.<\/p>\n<p>Five different configurations have been used. The standard PSLV, also known as PSLV-G, used six PS0M boosters powered by S-9 solid rocket motors, clustered around its PS1 first stage. The PSLV-XL \u2014 the rocket\u2019s heaviest-lift configuration \u2014 uses the same number of the more powerful PS0M-XL booster, with an S-12 motor. The intermediate PSLV-DL and PSLV-QL variants use two and four PS0M-XL boosters respectively, while the smallest PSLV Core Alone (PSLV-CA) flies without any boosters.<\/p>\n<p>For Saturday\u2019s launch, ISRO used the PSLV-XL configuration with its six solid rocket motors. Introduced in 2008, the PSLV-XL is the most-used version of the rocket and offers the greatest payload capacity. The vehicle launched EOS-06 had flight number PSLV C54.<\/p>\n<p>PSLV lifted off from the First Launch Pad (FLP) at the Satish Dhawan Space Centre, located on Sriharikota Island on India\u2019s east coast. PSLV\u2019s solid-propellant first stage, designated PS1, ignited at the zero mark in Saturday\u2019s countdown, with two pairs of PS0M-XL boosters lighting 0.42 and 0.62 seconds later, respectively. The final two boosters are air-lit, igniting 25 seconds after liftoff as PSLV climbs toward space.<\/p>\n<p>After exhausting their propellant, the first pair of ground-lit boosters were jettisoned 69.9 seconds after launch, with the second pair following two-tenths of a second later. The air-lit boosters separated at the 92-second mark in PSLV\u2019s flight, leaving the first stage firing alone for another 16 seconds.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-90096\" class=\"size-full wp-image-90096\" src=\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_stage2.jpg\" alt=\"\" width=\"1800\" height=\"1632\" srcset=\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_stage2.jpg 1800w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_stage2-350x317.jpg 350w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_stage2-386x350.jpg 386w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_stage2-768x696.jpg 768w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_stage2-1170x1061.jpg 1170w\" sizes=\"(max-width: 1800px) 100vw, 1800px\"><\/p>\n<p id=\"caption-attachment-90096\" class=\"wp-caption-text\">PSLV C54\u2019s second stage during integration. (Credit: ISRO)<\/p>\n<p>At one minute and 48 seconds mission elapsed time, PSLV\u2019s expended first stage separated. Two-tenths of a second later, the second stage \u2014 designated PS2 or PL40 \u2014 ignited its Vikas engine to continue the ascent. Vikas is a liquid-fueled engine, burning UH25 propellant \u2014 a mixture of unsymmetrical dimethylhydrazine and hydrazine hydrate in a 3:1 ratio \u2014 oxidized by dinitrogen tetroxide. It is a license-built derivative of the Viking engine formerly used on Europe\u2019s Ariane rocket.<\/p>\n<p>Forty seconds into the second stage burn, PSLV\u2019s payload fairing separated. Termed a \u201cheat shield\u201d by ISRO, the fairing serves to protect the satellites and preserve the rocket\u2019s aerodynamic profile as it climbs through the atmosphere. Upon leaving the atmosphere, it is jettisoned, reducing the rocket\u2019s overall mass and exposing the satellites to space. Shortly after fairing separation, the rocket initiated closed-loop guidance.<\/p>\n<p>The second stage flight lasted 152 seconds. The second and third stages then separated, with third-stage ignition occurring about 1.2 seconds later. The third stage, HPS3, has an S-7 solid rocket motor that burned for about 70 seconds. Following third stage burnout, the mission entered a coast phase as PSLV climbs towards the apogee \u2014 or highest point \u2014 of its trajectory. Stage separation occurred at eight minutes and eight seconds mission elapsed time, with fourth stage ignition about 10 and a half seconds after that.<\/p>\n<p>PSLV\u2019s fourth stage, the PS4 or L-2-5, is liquid-fueled and restartable, allowing it to make multiple burns for precise orbit insertion or to deliver several payloads into different orbits. Its twin main engines burn monomethylhydrazine propellant with mixed oxides of nitrogen as an oxidizer. During Saturday\u2019s launch, the stage only made one burn, which lasted eight minutes and seven seconds. At its conclusion, PSLV was in an orbit roughly 740 kilometers in altitude, inclined at 98.34 degrees. EOS-06 separated about 47 seconds after the end of the burn to begin its mission.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-90097\" class=\"size-full wp-image-90097\" src=\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_encapsulation.jpg\" alt=\"\" width=\"2080\" height=\"1388\" srcset=\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_encapsulation.jpg 2080w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_encapsulation-350x234.jpg 350w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_encapsulation-524x350.jpg 524w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_encapsulation-768x512.jpg 768w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_encapsulation-1920x1281.jpg 1920w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_encapsulation-1170x781.jpg 1170w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_encapsulation-585x390.jpg 585w, https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2022\/11\/pslv_c54_encapsulation-263x175.jpg 263w\" sizes=\"(max-width: 2080px) 100vw, 2080px\"><\/p>\n<p id=\"caption-attachment-90097\" class=\"wp-caption-text\">EOS-06 and its co-passengers are encapsulated in PSLV\u2019s payload fairing. (Credit: ISRO)<\/p>\n<p>After EOS-06 separates, the upper stage used its orbit adjustment thrusters to make a pair of orbit change maneuvers, lowering its orbit in preparation for the deployment of the other payloads. The first of these began 24 minutes and 11 seconds after EOS-06 separation, itself lasting 24 minutes and 19 seconds. After a 25-minute and 51-second coast, the thrusters fired again to begin the second orbit change maneuver, which lasted 21 minutes and 18 seconds. These maneuvers lowered PSLV\u2019s orbit to around 510 kilometers, changing the orbital inclination to 97.45 degrees.<\/p>\n<p>The two Thybolt satellites were the first of the secondary payloads to deploy, ejecting from their dispenser about 90 seconds after the end of the maneuver. Astrocast separated next, followed by Anand, and finally INS-2B. From the first to the last deployment, the process was expected to take 11 minutes. With spacecraft separation complete, the upper stage underwent passivation to safe its oxidizer and fuel tanks as it is to remain in orbit.<\/p>\n<p>Saturday\u2019s launch was India\u2019s fifth of the year, three of which have been made by PSLV rockets. There are no more Indian launches currently planned for 2022 with firm dates, however another test flight for the Small Satellite Launch Vehicle (SSLV) and a GSLV Mk.II launch of a navigation satellite were previously expected for the tail end of 2022 and are not yet confirmed to have slipped.<\/p>\n<p>If neither the SSLV nor GSLV Mk.II launches take place, then the EOS-06 launch will round out a year that has seen significant milestones for ISRO. The agency\u2019s SSLV rocket made its maiden flight in August, and although it failed to achieve orbit, vital information will have been learned that can be built upon ahead of the type\u2019s next development launch. ISRO\u2019s most recent launch prior to Saturday\u2019s mission marked the commercial debut of the GSLV Mk.III \u2014 also known as LVM3 \u2014 deploying 36 OneWeb satellites successfully. A second launch for OneWeb is currently slated for January or February next year.<\/p>\n<p><em>(Lead image: PSLV C54 launch. Credit: ISRO)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>India launched a new ocean monitoring satellite on Saturday morning, using its PSLV rocket to deliver the EOS-06 spacecraft into a low Earth orbit. The mission, PSLV C54, lifted off from the Satish Dhawan Space Centre at 11:56 local time (06:26 UTC). EOS-06, also known as Oceansat-3, is the latest in a series of satellites [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[8482,301,525,8515,860,8406],"class_list":["post-24431","post","type-post","status-publish","format-standard","hentry","category-news","tag-eos","tag-india","tag-isro","tag-oceansat","tag-pslv","tag-sdsc"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/24431"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=24431"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/24431\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=24431"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=24431"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=24431"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}