RISAT-2B - Revision history

ClariceLinderman: small fix article per standard format and fixed typos based on references

2025-08-24T17:16:44Z

small fix article per standard format and fixed typos based on references

← Older revision		Revision as of 22:46, 24 August 2025
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	\| launch_date = 22 May 2019, 00:00 [[Coordinated Universal Time\|UTC]]		\| launch_date = 22 May 2019, 00:00 [[Coordinated Universal Time\|UTC]]
	\| launch_rocket = [[Polar Satellite Launch Vehicle\|Polar Satellite Launch Vehicle-CA]], [[~~PSLC~~-C46]]		\| launch_rocket = [[Polar Satellite Launch Vehicle\|Polar Satellite Launch Vehicle-CA]] [[PSLV-C46]]
	\| launch_site = [[Satish Dhawan Space Centre]], [[Satish Dhawan Space Centre\|First Launch Pad (FLP)]]		\| launch_site = [[Satish Dhawan Space Centre]], [[Satish Dhawan Space Centre\|First Launch Pad (FLP)]]
	\| launch_contractor = [[Indian Space Research Organisation]]		\| launch_contractor = [[Indian Space Research Organisation]]
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	== Satellite description ==		== Satellite description ==
	RISAT-2B's main sensor is an indigenously developed [[synthetic-aperture radar]] (SAR) imaging satellite operating in [[X band\|X-band]] with 3.6 m radial rib antenna. The satellite is utilized for high resolution spot imaging of locations of interest and it has a mass of {{cvt\|615\|kg}}.<ref name="ISRO">{{cite web\|url=https://www.isro.gov.in/update/22-may-2019/risat-2b-radial-rib-antenna\|title=RISAT-2B: Radial Rib Antenna\|publisher=ISRO\|date=22 May 2019\|access-date=15 May 2021}}</ref>		RISAT-2B's main sensor is an indigenously developed [[synthetic-aperture radar]] (SAR) imaging satellite operating in [[X band\|X-band]] with 3.6 m radial rib antenna. The satellite is utilized for high resolution spot imaging of locations of interest and it has a mass of {{cvt\|615\|kg}}.<ref name="ISRO">{{cite web\|url=https://www.isro.gov.in/update/22-may-2019/risat-2b-radial-rib-antenna\|title=RISAT-2B: Radial Rib Antenna\|publisher=ISRO\|date=22 May 2019\|access-date=15 May 2021\|archive-date=29 May 2019\|archive-url=https://web.archive.org/web/20190529104039/https://www.isro.gov.in/update/22-may-2019/risat-2b-radial-rib-antenna\|url-status=dead}}</ref>

	== Launch ==		== Launch ==
	It was successfully launched aboard a [[Polar Satellite Launch Vehicle]] (PSLV-C46) launch vehicle at 00:00 [[Coordinated Universal Time\|UTC]] on 22 May 2019 from the [[Satish Dhawan Space Centre\|First Launch Pad]] at the [[Satish Dhawan Space Centre]].<ref name="TIMESINDIA">{{cite web\|url=https://timesofindia.indiatimes.com/india/pslv-c46/risat-2b-mission-a-success-isro-places-radar-imaging-earth-observation-satellite-in-orbit/articleshow/69436939.cms\|title=PSLV-C46 / Risat-2B mission a success, ISRO places radar imaging earth observation satellite in orbit\|newspaper=The Times of India\|date=22 May 2019\|access-date=15 May 2021}}</ref><ref name="SC20191204">{{cite web\|url=https:/~~/www-space-com.cdn.ampproject.org/v/s~~/www.space.com~~/amp~~/india-risat-2b-earth-satellite-launch-success.html~~?usqp=mq331AQCKAE=&amp_js_v=0.1~~\|title=India Successfully Launches RISAT-2B Earth-Observation Satellite\|publisher=SPACE.com\|access-date=~~15 May 2021~~}}</ref>		It was successfully launched aboard a [[Polar Satellite Launch Vehicle]] [[PSLV-C46]] launch vehicle at 00:00 [[Coordinated Universal Time\|UTC]] on 22 May 2019 from the [[Satish Dhawan Space Centre\|First Launch Pad]] at the [[Satish Dhawan Space Centre]].<ref name="TIMESINDIA">{{cite web\|url=https://timesofindia.indiatimes.com/india/pslv-c46/risat-2b-mission-a-success-isro-places-radar-imaging-earth-observation-satellite-in-orbit/articleshow/69436939.cms\|title=PSLV-C46 / Risat-2B mission a success, ISRO places radar imaging earth observation satellite in orbit\|newspaper=The Times of India\|date=22 May 2019\|access-date=15 May 2021}}</ref><ref name="SC20191204">{{cite web\|url=https://www.space.com/india-risat-2b-earth-satellite-launch-success.html\|title=India Successfully Launches RISAT-2B Earth-Observation Satellite\|date=22 May 2019 \|publisher=SPACE.com\|access-date=10 March 2025}}</ref>

	== See also ==		== See also ==
			{{Portal\|Spaceflight}}
	* [[List of Indian satellites]]		* [[List of Indian satellites]]
			* [[PSLV-C46]]

	== References ==		== References ==
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	[[Category:Space synthetic aperture radar]]		[[Category:Space synthetic aperture radar]]
	[[Category:Spacecraft launched by PSLV rockets]]		[[Category:Spacecraft launched by PSLV rockets]]
	[[Category:May 2019 ~~events~~ in India]]		[[Category:May 2019 in India]]
			[[Category:Imaging reconnaissance satellites]]
			[[Category:RISAT]]

CleanupBot II: Removed empty portal template using script

2023-08-14T14:57:57Z

Removed empty portal template using script

← Older revision		Revision as of 20:27, 14 August 2023
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	== See also ==		== See also ==
	~~{{Portal\|Spaceflight}}~~
	* [[List of Indian satellites]]		* [[List of Indian satellites]]

imported>CRS-20: Updated

2021-05-16T04:31:02Z

Updated

New page

{{Short description|Indian Earth observation satellite}}
{{Use British English|date=November 2020}}
{{Use dmy dates|date=November 2020}}
{{Infobox spaceflight
| name = RISAT-2B
| names_list = Radar Imaging Satellite-2B
| image =
| image_caption =
| image_size = 300px

| mission_type = [[Earth observation satellite|Earth observation]]<br/>[[Imaging radar|Radar imaging satellite]]<br/>[[Emergency management|disaster management]])
| operator = [[Indian Space Research Organisation|ISRO]]
| COSPAR_ID = 2019-028A
| SATCAT = 44233
| website = https://www.isro.gov.in/
| mission_duration = 5 years (planned)<br/>{{time interval|22 May 2019|show=ymd}} ''(in progress)''

| spacecraft = RISAT-2B
| spacecraft_type =
| spacecraft_bus = [[RISAT]]
| manufacturer = [[Indian Space Research Organisation]]
| launch_mass = {{cvt|615|kg}}
| dry_mass =
| dimensions =
| power = 2000 [[Watt|watts]]

| launch_date = 22 May 2019, 00:00 [[Coordinated Universal Time|UTC]]
| launch_rocket = [[Polar Satellite Launch Vehicle|Polar Satellite Launch Vehicle-CA]], [[PSLC-C46]]
| launch_site = [[Satish Dhawan Space Centre]], [[Satish Dhawan Space Centre|First Launch Pad (FLP)]]
| launch_contractor = [[Indian Space Research Organisation]]

| entered_service = August 2019
| disposal_type =
| deactivated =
| last_contact =

| orbit_reference = [[Geocentric orbit]]
| orbit_regime = [[Sun-synchronous orbit]]
| orbit_altitude = {{cvt|555|km}}
| orbit_inclination = 37.0°
| orbit_period = 93.0 minutes
| apsis = gee

| instruments = [[Synthetic-aperture radar|Synthetic Aperture Radar]] ([[X band|X-band]]) (SAR-X)

| programme = [[Earth observation satellite|Earth observation satellites series]]
| previous_mission = [[Cartosat-2F]]
| next_mission = [[Cartosat-3]]
}}

'''RISAT-2B''', or '''Radar Imaging Satellite-2B''' is an Indian [[Radar imaging|radar]] [[reconnaissance satellite]] that is part of India's [[RISAT]] programme and the third satellite in the series. It is built by [[Indian Space Research Organisation]] (ISRO) to replace [[RISAT-2]].

== Overview ==
RISAT-2B satellites will succeed India's ten-year-old [[RISAT-2]] spacecraft. Equipped with [[X band|X-band radar imagers]], RISAT-2B monitors the [[Earth]] day and night, in any weather conditions. RISAT uses a technique called Synthetic Aperture Radar (SAR) to build images of the Earth below it. Signals transmitted from the satellite are reflected from the surface and its echo is recorded when it reaches back to the satellite. These signals can then be processed to build a profile of the ground below. The RISAT constellation is operated by the [[Indian Space Research Organisation|ISRO]]. While ISRO states the satellites applications as supporting [[agriculture]], [[forestry]] and [[Emergency management|disaster management]], their primary purpose is military surveillance.<ref name="Display">{{cite web |url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2019-028A|title=Display: RISAT-2B 2019-028A|publisher=NASA|date=27 April 2021|access-date=14 May 2021}} {{PD-notice}}</ref>

RISAT-2B can operate in different modes including [[Very High Resolution Radar]] (VHRR) imaging modes of 1 × 0.5 m resolution and 0.5 × 0.3 m resolution. It is placed in an inclined orbit for better revisit rates over area of interest. Being a radar imaging satellite, RISAT-2B can image during day or night and in all weather conditions.<ref name=GOVINDIA>{{cite web|url=https://pib.gov.in/PressReleasePage.aspx?PRID=1577185|title=Earth Observation Satellite RISAT-2B|publisher=Press Information Bureau - Government of India|date=4 July 2019|access-date=15 May 2021}}</ref>

== Satellite description ==
RISAT-2B's main sensor is an indigenously developed [[synthetic-aperture radar]] (SAR) imaging satellite operating in [[X band|X-band]] with 3.6 m radial rib antenna. The satellite is utilized for high resolution spot imaging of locations of interest and it has a mass of {{cvt|615|kg}}.<ref name="ISRO">{{cite web|url=https://www.isro.gov.in/update/22-may-2019/risat-2b-radial-rib-antenna|title=RISAT-2B: Radial Rib Antenna|publisher=ISRO|date=22 May 2019|access-date=15 May 2021}}</ref>

== Launch ==
It was successfully launched aboard a [[Polar Satellite Launch Vehicle]] (PSLV-C46) launch vehicle at 00:00 [[Coordinated Universal Time|UTC]] on 22 May 2019 from the [[Satish Dhawan Space Centre|First Launch Pad]] at the [[Satish Dhawan Space Centre]].<ref name="TIMESINDIA">{{cite web|url=https://timesofindia.indiatimes.com/india/pslv-c46/risat-2b-mission-a-success-isro-places-radar-imaging-earth-observation-satellite-in-orbit/articleshow/69436939.cms|title=PSLV-C46 / Risat-2B mission a success, ISRO places radar imaging earth observation satellite in orbit|newspaper=The Times of India|date=22 May 2019|access-date=15 May 2021}}</ref><ref name="SC20191204">{{cite web|url=https://www-space-com.cdn.ampproject.org/v/s/www.space.com/amp/india-risat-2b-earth-satellite-launch-success.html?usqp=mq331AQCKAE=&amp_js_v=0.1|title=India Successfully Launches RISAT-2B Earth-Observation Satellite|publisher=SPACE.com|access-date=15 May 2021}}</ref>

== See also ==
{{Portal|Spaceflight}}
* [[List of Indian satellites]]

== References ==
{{Reflist|30em}}

{{PSLV}}
{{RISAT satellites}}
{{Indian spacecraft}}
{{Orbital launches in 2019}}

[[Category:Spacecraft launched by India in 2019]]
[[Category:Earth observation satellites of India]]
[[Category:Space synthetic aperture radar]]
[[Category:Spacecraft launched by PSLV rockets]]
[[Category:May 2019 events in India]]