RISAT-1 = PSLV-C19 (XL)- 26.04.12 04:17 ЛМВ

[Salo]

http://forum.nasaspaceflight.com/index.php?topic=27238.msg876959#msg876959

Technical descriptions of Risat-1:
http://www.scanex.ru/en/publications/pdf/publication50.pdf
https://directory.eoportal.org/get_announce.php?an_id=12429

Tentative launch date: April 21
(source in Telugu)

A new NOTAM with revised dates:

A0061/12 -  DUE TO LAUNCHING OF POLAR SATELLITE VEHICLE (PSLV C-19) FROM INDIA (19 43.9N 080 14.2E) AND THE POSSIBILITY OF IMPACT [....]TEMPO DNG ZONE EST WI AN AREA BOUNDED BY FLW COORD: 333000S 0723000E, 333000S 0763000E, 373000S 0763000E, AND 373000E 0723000E. SL - UNL, DLY BTN 2345 TO 0200, 19 APR 23:45 2012 UNTIL 19 MAY 02:00 2012. CREATED: 29 MAR 11:52 2012

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http://www.dnaindia.com/scitech/report_preparations-on-for-india-s-first-radar-imaging-satellite-launch_1670143

Preparations on for India's first radar imaging satellite launch[/size]
Published: Sunday, Apr 1, 2012, 17:01 IST
Place: Bangalore | Agency: PTI

Preparations are underway for this month's launch of an indigenously designed and developed satellite that has the unique capability of imaging during day and night and in all weather conditions.

ISRO is looking at 'lucky April 20' for the blast-off from India's spaceport of Sriharikota.

RISAT-1, a Radar Imaging Satellite with the capability to take images of the earth during day and night as well as in cloudy conditions, is a first of its kind by India and has already reached the spaceport having been transported from here.

India had launched RISAT-2, which it bought from Israel for $110 million, on April 20, 2009, and Resourcesat-2 mission took place on the same day last year. Both were successful ventures.

"April 20 is a lucky day for us", an ISRO official told PTI here. After back-to-back failures of GSLV -- one with Russian engine and another with homegrown one --, this statement did not come as a surprise.

RISAT-1, weighing around 1850 kg, is slated for launch by ISRO's workhorse Polar Satellite Launch Vehicle (PSLV-C19 (XL)) into a 536km orbit.

The launch of the spacecraft, the country's first microwave remote sensing satellite, was put off by at least a couple of months following the ISRO row, the fallout of the punitive action against four former space scientists for their role in the Antrix-Devas deal, that delayed the preparations.

RISAT-2 with all weather capability and ability to penetrate through clouds was realised in association with Israel Aerospace Industries. RISAT-2, primarily a spy satellite, is being used solely for Defence applications, keeping an eye on the borders and the country's neighbourhood.

"This satellite (RISAT-2) can sharply focus on metallic objects", an ISRO official said.

"The RISAT-1 will be useful for monitoring of agriculture and water resources management, among other applications", said the official, who added that this satellite would not be used for defence applications as RISAT-2 is already doing that job.

RISAT-1 carries a C-band Synthetic Aperture Radar (SAR) payload, operating in a multi-polarisation and multi-resolution mode to provide images with coarse, fine and high spatial resolutions respectively.[/size]

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India ready with all-weather imaging satellite: ISRO

India is set to launch an indigenous satellite with the "unique" capability to capture images in all-weather conditions that will facilitate agriculture and disaster management, ISRO said on Wednesday.

India currently depends on images from a Canadian satellite as domestic remote sensing spacecraft cannot take pictures of the ground during cloud cover.

After nearly 10 years of effort, Indian Space Research Organisation (ISRO) has developed -- with a lot of participation from Indian industries -- a microwave satellite that has the unique capability of imaging during day and night and in all weather conditions, it said.

"This (Radar Imaging Satellite or RISAT-1) is about 1,850 kg. So, this will be heaviest satellite lifted by a PSLV (Polar Satellite Launch Vehicle)," ISRO Chairman K Radhakrishnan told PTI here.

"It's most likely to be launched on April 26 at 5.45 am," he said. "It has taken about 10 years of efforts in developing this (RISAT-1)".

The approved cost of RISAT-1, including its development, is Rs378 crore, while Rs 120 crore has been spent to build the rocket (PSLV-C19), making it a Rs498-crore mission.

RISAT-1 is a "complex satellite", Radhakrishnan said.

The satellite would be particularly useful in Kharif season when cloud-covered atmosphere is frequent. Images taken from the spacecraft of agricultural crops would enable planners with regard to production estimation and forecast, the space agency said.

During floods, aerial pictures would give a clear idea on the affected region and water level. In addition, this satellite can even "penetrate" the ground and throw light on soil moisture up to a few centimeters, Radhakrishnan said.

RISAT-1 would be launched into a 536-km orbit by PSLV, which is India's workhorse rocket.

The satellite carries a C-band Synthetic Aperture Radar (SAR) payload, operating in a multi-polarisation and multi-resolution mode to provide images with coarse, fine and high spatial resolutions.

Radhakrishnan said ISRO had built two SARs in the past but these had been flown on aircraft.

http://www.dnaindia.com/india/report_india-ready-with-all-weather-imaging-satellite-isro_1671521

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Спутник стоит ~ 76 млн долларов, ракета ~ 24 миллиона.

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2012-04-04

Спрос на космические радиолокаторы растет

В настоящее время в мире наблюдается рост интереса к спутникам радиолокационного наблюдения как со стороны гражданских, так и оборонных структур. Этому способствуют уникальные возможности для мониторинга территорий в самых сложных погодных условиях и условиях освещенности, а также заметный прогресс в области технологий создания и использования средств космической радиолокационной съемки сверхвысокого пространственного разрешения.

На 2012 год запланированы запуски не менее 6 спутников гражданского и военного назначения, оснащенных радиолокаторами с синтезированной апертурой (РСА): RISAT-1 (Индия), IGS-Radar-4 (Япония), NROL-25 (США), PAZ (Испания), HJ-1C (Китай) и Кондор-Э (Россия).

Один из перечисленных спутников – секретный американский аппарат видовой радарной разведки NROL-25 был выведен на орбиту в ночь с 3 на 4 апреля (в 23:12:57.278 UTC 3.4.2012) с помощью ракеты-носителя DELTA-IV с базы ВВС США Ванденберг (штат Калифорния). По данным пресы, новый спутник, получивший неофициальное наименование FIA Radar-2, является уже вторым в новой серии (первый КА FIA Radar-1 USA-215 был запущен 21.9.2010) и предназначен для замены выработавших ресурс радарных спутников видовой разведки типа «Лакросс» (Lacrosse). В отличие от предшественников, новые аппараты выводятся на сравнительно высокие орбиты высотой 1100 км и наклонением 123°, которые обеспечивают широкую пролосу съемки.

До конца апреля Индия планирует осуществить запуск нового радиолокационного аппарата ДЗЗ RISAT-1 собственной ракетой PSLV с полигона Шрихарикота. Спутник массой 1750 , созданный национальными космическими предприятиями агентства ISRO, будет оснащен радаром С-диапзона с пространственным разрешением от 2 м до 50 м.

В плане запусков – испанский спутник PAZ, созданный на основе успешного германского аппарата TerraSAR-X, китайский КА мониторинга ЧС HJ-1C (возможен также запуск секретных радарных спутников серии «Яогань») и российский КА «Кондор-Э», запуск которого откладывается на протяжении последних пяти лет.

Интересно отметить, что в Канаде в 2012-2013 финансовом году планируется сокращение государственных расходов на нужды Национального космического агентства на 7,9 млн долл. На этом фоне правительство страны намерено принять решение о дополнительной финансовой поддержке в размере 23 млн долл. деятельности Министерства природных ресурсов Канады в области создания новых наземных станций приема информации и развития системы обработки и распределения данных космической съемки с помощью спутников RADARSAT-1 и RADARSAT-2 – самой успешной на сегодняшний день коммерческой радиолокационной программы ДЗЗ.

В России первым сертифицированным центром приема данных со спутников RADARSAT стал ИТЦ «СКАНЭКС» (еще в 2004 г.). С декабря 2011 года компания является также официальным дистрибьютором в России продуктов спутника RADARSAT-2. Соответствующее соглашение было подписано с компанией-оператором спутника MDA Geospatial Services. В режиме прямого приема с данными RADARSAT-2 работают Центры космического мониторинга, созданные на основе технологии «УниСкан» в Самаре и Архангельске.

Независимость от облачности, времени суток и сезона дает возможность выполнения заказа на съемку с вероятностью, близкой к 100%. Заявка на съемку в экстренных случаях может быть подана за 29 часов до ее проведения для RADARSAT-1 и за 4-5 часов для RADARSAT-2, доставка данных пользователям по электронным каналам связи выполняется в течение нескольких часов после приема данных.

При подготовке материалы использованы данные из источников: indiawires.com, spaceflight101.com, spaceref.ca

http://www.scanex.ru/ru/news/News_Preview.asp?id=n20176172

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http://www.nnit.ru/news/n118390/

Индия готовит к запуску радиолокационный спутник ДЗЗ[/size]

 06.04.2012 12:33
В Индии завершается подготовка к запуску нового спутника радиолокационной съемки Земли с высоким разрешением RISAT-1 (Radar Imaging SATellite). Спутник планируется вывести на полярную орбиту высотой 536 км и наклонением 97,8 град. до конца апреля. По утверждениям официальных представителей индийского космического агентства ISRO, впервые аппарат такого типа полностью произведен в Индии, включая основное оборудование полезной нагрузки — радиолокатор С-диапазона с синтезированием апертуры.

Предыдущий КА RISAT-2, запущенный в 2009 году, был разработан израильскими специалистами компании Israel Aerospace Industries и использовался преимущественно в военных целях. Размеры антенны радиолокационной системы RISAT-1, разработанной в центре прикладных космических исследований (SAC) ISRO, составляют 6х2 м. Радиолокатор будет функционировать на частоте 5,35 ГГц и позволит вести съемку земной поверхности в пяти различных режимах с разрешением 3-50 м. По сравнению с предыдущим спутником новый аппарат имеет более сложную конструкцию. Его масса — около 1850 кг, расчетный срок функционирования — 5 лет. Для запуска RISAT-1 с индийского ракетного полигона Шрихарикота планируется использовать модернизированную ракету-носитель PSLV-XL.

В отличие от своего предшественника спутник RISAT-1 предполагается использовать в интересах гражданских пользователей для контроля состояния сельскохозяйственных угодий, наблюдения районов стихийных бедствий и чрезвычайных ситуаций и решения других народнохозяйственных, научно-прикладных задач и коммерческих задач. Как отметил доктор Винай Дадхвал (Vinay Kumar Dadhwal), помощник директора национального центра дистанционного зондирования Земли ISRO, запуск и ввод в эксплуатацию RISAT-1 окажет существенное влияние на развитие рынка радиолокационных снимков. По его словам, индийские продукты ДЗЗ очень конкурентоспособны по цене, а недавнее открытие свободного доступа к некоторым архивам изображений, полученных с помощью систем AWiFS и LISS-III, еще больше будет способствовать росту популярности и востребованности данных космической съемки.

Редактор раздела: Алена Журавлева (info@mskit.ru)[/size]

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http://timesofindia.indiatimes.com/india/New-ISRO-centre-to-control-spy-satellite-launch/articleshow/12595040.cms

New ISRO centre to control spy satellite launch[/size]
I ANS | Apr 9, 2012, 02.57PM IST

CHENNAI: The Indian rocket that will carry the 1,850 kg indigenous surveillance satellite - Radar Imaging Satellite (Risat-1) - to the skies this month will be controlled by the new mission control centre at Sriharikota, said a senior official of Indian space agency ISRO.

 "The second mission control centre was inaugurated by President Pratibha Patil this January. The forthcoming rocket launch would be controlled and monitored from the new mission control centre. The rocket will fly off the first launch pad," S Satish, director (Publications and Public Relations), Indian Space Research Organisation (ISRO), said.

ISRO has its rocket port at Sriharikota in Andhra Pradesh around 80 km from here.

 A senior ISRO official not wanting to be named said: "The new mission control centre is modern and has larger area to accommodate more space scientists, officials, VIPs and others."

 ISRO officials said that the rocket Polar Satellite Launch Vehicle (PSLV) carrying remote sensing satellite Risat-1 is slated for launch from April 25-30.

 "The exact launch date depends on the readiness of the rocket and satellite systems. Normally it will take 12-14 days for the rocket launch after carrying out all the tests," an ISRO official said.

 ISRO officials said that Risat-1 systems are being checked at Sriharikota and it will be mated with the rocket later.

 Once the satellite is loaded on to the rocket, the entire rocket systems would again be tested.

 The PSLV rocket is in a fully assembled condition and is waiting for Risat-1, the heaviest microwave remote sensing satellite to be built by India. The satellite has all weather, day and night imaging capability.

 The satellite would be used for disaster prediction and agriculture forestry, and the high resolution pictures and microwave imaging could also be used for defence purposes.

 The satellite's synthetic aperture radar (SAR) can acquire data at C-band. In 2009, ISRO had launched 300 kg Risat-2 with Israeli built SAR enabling earth observation in all weather, day and night conditions.

 Remote sensing satellites send back pictures and other data for use. India has the largest constellation of remote sensing satellites in the world providing imagery in a variety of spatial resolutions, from more than a metre ranging up to 500 metres, and is a major player in vending such data in the global market.

 According to ISRO officials, the rocket that would sling Risat-1 would be PSLV's upgraded variant called PSLV-XL.

 The rocket would weigh around 320 tonnes at lift-off and would be the third such expendable rocket to be sent up by ISRO.[/size]

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http://www.spaceflightnow.com/tracking/index.html

April 27/28     PSLV  •  RISAT 1
Launch time: 0015 GMT on 28th (8:15 p.m. EDT on 27th)
Launch site: Satish Dhawan Space Center, Sriharikota, India

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ISRO Annual Report 2012
http://www.isro.org/pdf/AnnuaReport2012.pdf

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RISAT-1 all set for launch at Sriharikota

RISAT-1 undergoing prelaunch tests in the clean room at the Satish Dhawan Space Centre in Sriharikota. Photo Courtesy : ISRO

Things are getting set for the launch of India's Radar Imaging Satellite (RISAT-1) from the spaceport at Sriharikota at 5.45 a.m. on Thursday. The four stages of the Polar Satellite Launch Vehicle (PSLV-XL) have been stacked up at the first launch-pad built on the beachside on the Sriharikota island and the satellite is married up with the vehicle. The 71-hour countdown for the lift-off will begin at 6.45 a.m. on Monday. The RISAT-1 is essentially a remote-sensing satellite.

The RISAT-1, which has been ten years in the making, will be the Indian Space Research Organisation's (ISRO) first radar-imaging satellite. An ISRO satellite specialist said: "Radar imaging is a very complex technology. It is technologically challenging to build such a satellite." RISATs use synthetic aperture radars and the great advantage of RISATs is that they can take pictures of the earth at all times, through rain, sun, clouds, fog and cyclones.

According to ISRO spokesman S. Satish, "This is not only the first radar imaging satellite to be built by India but this is the heaviest remote-sensing satellite built by the ISRO. Besides, it is the heaviest satellite to be put in orbit by the PSLV. RISAT-1 weighs 1858 kg." A powerful PSLV-XL is being used to put RISAT-1 in polar orbit at an altitude of 480 km. The satellite's propulsion system will then be used to take it to the final orbit at an altitude of 536 km, Mr. Satish said.

The rocket is called PSLV-XL (XL stands for extra-large) because it uses six more powerful strap-on motors than those used in the standard PSLV version. If the normal PSLV version's six strap-on motors each use nine tonnes of solid propellants, each of them in the PSLV-XL use 12 tonnes of propellants. This is the third time the ISRO is using a PSLV-XL version. It was first used in October 2008 to put Chandrayaan-1 in orbit and again in July 2011 to during the GSAT-12 launch.

Mr. Satish said pictures from RISAT-1 would be used to estimate the crop yield — especially to monitor paddy crop, assess its acreage and predict its health during the kharif season, when the sky is covered with clouds. The satellite's images can be used for disaster management during cyclones and floods, to assess how much area has been inundated and so on. RISAT-1's life-span is five years.

M. Annadurai is the Programme Director for RISAT-1. N. Valarmathi is its Project Director.

ISRO scientists said that unlike the normal, optical remote-sensing satellites, the RISATs use a synthetic aperture radar (SAR). This radar emits waves in a special way and collects part of the reflected radiation. From this reflected radiation, images of the earth can be built and these images have excellent clarity. Since it is difficult to carry a radar/antenna with a big aperture on a satellite, an SAR is used because it can synthesise (that is, artificially create) a larger aperture electronically. Hence it is called a synthetic aperture radar.

Although this is the first time the ISRO is launching its own RISAT, it has twice launched Israel's RISATs in orbit using the PSLVs from Sriharikota. The ISRO first put Israel's RISAT, Tecsar, in orbit in January, 2008, and the agency deployed Israel's RISAT-2 in orbit in April 2009. Both Tecsar and RISAT-2 are reconnaissance/surveillance satellites. While Israel uses the images from Tecsar, India uses the images from RISAT-2 for surveillance.

http://www.thehindu.com/news/national/article3343033.ece

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Countdown Commences for the Launch of PSLV-C19 Carrying India's First Radar Imaging Satellite (RISAT-1)

The Launch Authorisation Board (LAB) for Polar Satellite Launch Vehicle (PSLV-C19)/Radar Imaging Satellite (RISAT-1) mission, which met on April 21, 2012 at Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota has cleared the launch of PSLV-C19/RISAT-1 mission at 05:47 hrs (IST) on Thursday, April 26, 2012.

The 71-hour countdown commenced at 06:47 hours today (April 23, 2012). During the Countdown, propellant-filling operations of the liquid propellant second stage (PS2) and fourth stage (PS4) of the launch vehicle will be carried out. Besides, mandatory checks on the launch vehicle and spacecraft will be carried out. Also, charging of batteries and pressurisation of propellant tanks onboard the satellite will be performed. Readiness of various ground systems such as tracking radar systems and communication networks will also be checked.

PSLV-C19 will inject RISAT-1 satellite into an orbit of 480 km altitude at an inclination of 97.552o. The satellite will be put in its final orbital configuration at 536 km altitude using thrusters onboard the satellite.

http://isro.org/pressrelease/scripts/pressreleasein.aspx?Apr23_2012

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http://isro.org/pslv-c19/Imagegallery/launchvehicle.aspx


PSLV-C19-PS1-NOZZLE-END SEGMENT ARRIVES AT LAUNCHPAD


PSLV-C19-PS1-MID SEGMENT-1 BEING STACKED


PSLV-C19-PS1-STACK OF ALL 5 SEGMENTS


PSLV-C19-PS0-STRAPON BEING ASSEMBLED TO PS1


PSLV-C19-FULLY ASSEMBLED STAGE 1


PSLV-C19-PS2-SECOND STAGE UNDERGOING CHECKS - PSLV-C19 STACKED UP TO 4TH STAGE


Panoramoric view of Fully Integrated PSLV-C19 - Fully Integrated PSLV-C19

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http://isro.org/pslv-c19/Imagegallery/satellite.aspx


RISAT-1 with one of its solar panel wings deployed


SAT-1 undergoing prelaunch tests at clean room in SDSC, SHAR


RISAT-1 Satellite


RISAT-1 Satellite

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http://isro.org/pslv-c19/pdf/pslv-c19-brochure.pdf

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Видео:
http://isro.org/video.aspx

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RISAT-1 - Launch Updates
Countdown Operations Underway[/size]
April 25, 2012

India aims to Launch its next Satellite to Orbit on April 26, 2012 at 0:17 GMT aboard a Polar Satellite Launch Vehicle XL Rocket blasting off from the Satish Dhawan Space Center, Sriharikota, India. The Payload for this flight is RISAT-1, a radar satellite.

In Preparation for Liftoff, the 71-hour launch countdown was started on April 23 at 6:47 local time. Nominal Countdown operations include the Propellant Loading of the second and fourth stage of the PSLV Launcher. Stages one and three are both solid-fueled. Also during the countdown, extensive checks of the Rocket and the Spacecraft are conducted as well as battery charging and Satellite Propellant Tank Pressurization. In addition to that, India's Ground Network of Tracking Stations is being configured for the flight.

Launch from the Satish Dhawan Launch Site, the Vehicle will fly a so called 'Dogleg' Trajectory to avoid the Island of Sri Lanka. A Dogleg is  a guided, powered turn during the  ascent phase of a Rocket Flight. Moving back to its course, the PSLV Rocket will have a nominal burn time of about 15 Minutes delivering its Payload to a Transfer Orbit.
...

Estimated Launch Trajectory

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http://webcast.gov.in/live/

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5 минут

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Улетела!

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Есть отделение RISAT-1 !