RISAT-2B

Last updated

RISAT-2B
NamesRadar Imaging Satellite-2B
Mission type Earth observation
Radar imaging satellite
disaster management)
Operator ISRO
COSPAR ID 2019-028A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 44233
Website https://www.isro.gov.in/
Mission duration5 years (planned)
4 years, 4 months and 13 days (in progress)
Spacecraft properties
SpacecraftRISAT-2B
Bus RISAT
Manufacturer Indian Space Research Organisation
Launch mass615 kg (1,356 lb)
Power2000 watts
Start of mission
Launch date22 May 2019, 00:00 UTC
Rocket Polar Satellite Launch Vehicle-CA PSLV-C46
Launch site Satish Dhawan Space Centre, First Launch Pad (FLP)
Contractor Indian Space Research Organisation
Entered serviceAugust 2019
Orbital parameters
Reference system Geocentric orbit
Regime Sun-synchronous orbit
Altitude555 km (345 mi)
Inclination 37.0°
Period 93.0 minutes
Instruments
Synthetic Aperture Radar (X-band) (SAR-X)
 

RISAT-2B, or Radar Imaging Satellite-2B is an Indian 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.

Contents

Overview

RISAT-2B satellites will succeed India's ten-year-old RISAT-2 spacecraft. Equipped with 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 ISRO. While ISRO states the satellites applications as supporting agriculture, forestry and disaster management, their primary purpose is military surveillance. [1]

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. [2]

Satellite description

RISAT-2B's main sensor is an indigenously developed synthetic-aperture radar (SAR) imaging satellite operating in 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 615 kg (1,356 lb). [3]

Launch

It was successfully launched aboard a Polar Satellite Launch Vehicle PSLV-C46 launch vehicle at 00:00 UTC on 22 May 2019 from the First Launch Pad at the Satish Dhawan Space Centre. [4] [5]

See also

Related Research Articles

<span class="mw-page-title-main">Space-based radar</span> Use of radar systems mounted on satellites

Space-based radar or spaceborne radar is a radar operating in outer space; orbiting radar is a radar in orbit and Earth orbiting radar is a radar in geocentric orbit. A number of Earth-observing satellites, such as RADARSAT, have employed synthetic aperture radar (SAR) to obtain terrain and land-cover information about the Earth.

<span class="mw-page-title-main">TecSAR-1</span> Israeli reconnaissance satellite

TecSAR-1, also known as TechSAR, Polaris and Ofeq-8, is an Israeli reconnaissance satellite, equipped with a synthetic-aperture radar (SAR) developed by Elta Systems. It was successfully launched at 03:45 UTC on 21 January 2008, by PSLV C-10 launch vehicle, from the Satish Dhawan Space Centre in India.

<span class="mw-page-title-main">Cartosat-3</span>

Cartosat-3 is an advanced Indian Earth Observation satellite built and developed by Indian Space Research Organisation (ISRO), which replaces the Indian Remote Sensing Satellite (IRS) series. It has a panchromatic resolution of 0.25 metres making it one of the imaging satellite with highest resolution in the world at the time of launch and MX of 1 metre with a high quality resolution which is a major improvement from the previous payloads in the Cartosat series.

The Integrated Space Cell was the nodal agency within the Government of India which oversees the security of its space based military and civilian hardware systems. It was to be jointly operated by all the three services of the Indian Armed Forces, the civilian Defence Research and Development Organisation and the Indian Space Research Organisation (ISRO). This agency was superseded by Defence Space Agency in 2019.[better source needed]

<span class="mw-page-title-main">RISAT</span> Series of Indian radar imaging satellites

RISAT (Radar Imaging Satellite) is a series of Indian radar imaging reconnaissance satellites built by the Indian Space Research Organization (ISRO). They provide all-weather surveillance using synthetic aperture radars (SAR).

RISAT-2, or Radar Imaging Satellite-2 was an Indian radar imaging reconnaissance satellite that was part of India's RISAT programme. It was built by Indian Space Research Organisation (ISRO) and successfully launched aboard a PSLV-CA launch vehicle at 01:15:00 UTC on 20 April 2009 from the Second Launch Pad at the Satish Dhawan Space Centre.

<span class="mw-page-title-main">RISAT-1</span> Indian Earth observation satellite

Radar Imaging Satellite 1 or RISAT-1, was an Indian remote sensing satellite built and operated by the Indian Space Research Organisation (ISRO). The second RISAT satellite to be launched, it used a C-band 5.35 GHz synthetic-aperture radar (SAR) for Earth observation.

Cartosat-2B is an Earth observation satellite in a Sun-synchronous orbit and the fourth of the Cartosat series of satellites. The satellite is the seventeenth satellite in the Indian Remote Sensing (IRS) satellite series to be built by the Indian Space Research Organisation (ISRO).

The Cartosat is a series of Indian optical earth observation satellites built and operated by the Indian Space Research Organisation (ISRO). The Cartosat series is a part of the Indian Remote Sensing Program. They are used for Earth's resource management, defence services and monitoring.

<span class="mw-page-title-main">NISAR (satellite)</span> Joint NASA-ISRO synthetic radar aperture spacecraft

The NASA-ISRO Synthetic Aperture Radar (NISAR) mission is a joint project between NASA and ISRO to co-develop and launch a dual-frequency synthetic aperture radar on an Earth observation satellite. The satellite will be the first radar imaging satellite to use dual frequencies. It will be used for remote sensing, to observe and understand natural processes on Earth. For example, its left-facing instruments will study the Antarctic cryosphere. With a total cost estimated at US$1.5 billion, NISAR is likely to be the world's most expensive Earth-imaging satellite.

<span class="mw-page-title-main">Tapan Misra</span> Indian scientist

Tapan Misra is an Indian scientist who has been the Director of Space Applications Centre and Physical Research Laboratory in ISRO. He later became Senior Advisor to the Chairman, ISRO.

<span class="mw-page-title-main">EOS-04</span> Indian radar imaging satellite

EOS-04 or Earth Observation Satellite - 04 is an Indian Space Research Organisation Radar Imaging Satellite designed to provide high quality images under all weather conditions for applications such as Agriculture, Forestry & Plantations, Soil Moisture & Hydrology and Flood mapping. It is a follow on to RISAT-1 satellite with similar configuration. The satellite is developed by the ISRO and it is sixth in series of RISAT satellites.

<span class="mw-page-title-main">Cartosat-2D</span> Indian Earth observation satellite

Cartosat-2D is an Earth observation satellite in a Sun-synchronous orbit (SSO) and the fifth of the Cartosat series of satellites. The satellite is built, launched and maintained by the Indian Space Research Organisation (ISRO). Cartosat-2D has a mass of 714 kg.

<span class="mw-page-title-main">Cartosat-2F</span> Indian Earth observation satellite

Cartosat-2F is the eighth satellite in the Cartosat-2 Series. It is an Earth observation satellite launched on the PSLV-C40 mission by the Indian Space Research Organisation (ISRO).

<span class="mw-page-title-main">PSLV-C42</span> 44th mission of the Indian Polar Satellite Launch Vehicle program

PSLV-C42 was the 44th mission of the Indian Polar Satellite Launch Vehicle (PSLV) program and its 12th mission in the Core Alone (CA) configuration. PSLV-C42 successfully carried and deployed 2 Earth observation satellites in Sun-synchronous orbits at an altitude of 588 kilometres (365 mi). It was launched on 16 September 2018 by the Indian Space Research Organisation (ISRO) from the first launch pad of the Satish Dhawan Space Centre at Sriharikota, Andhra Pradesh. The two international satellites were launched as part of a commercial arrangement between Surrey Satellite Technology Limited (SSTL) and ISRO's commercial arm Antrix Corporation Limited, run under the auspices of the Indian Government's Department of Space.

<span class="mw-page-title-main">RISAT-2BR1</span> Indian Earth observation satellite

RISAT-2BR1 is a synthetic-aperture radar (SAR) imaging satellite built by Indian Space Research Organisation (ISRO). It is part of India's RISAT series of SAR imaging satellite and fourth satellite in the series. RISAT-2BR1 was launched on 11 December 2019 at 09:55 UTC aboard Polar Satellite Launch Vehicle PSLV-C48 from First Launch Pad (FLP) of Satish Dhawan Space Centre. It was the 50th launch of Polar Satellite Launch Vehicle and 75th launch from Satish Dhawan Space Centre.

EOS-01 is an X-band, synthetic-aperture radar (SAR) based all weather Earth imaging satellite built by the Indian Space Research Organisation (ISRO) for tasks pertaining to forestry, agricultural and disaster management. It is a part of India's RISAT series of SAR imaging spacecraft and would be third satellite in the series including RISAT-2B, RISAT-2BR1 with 120° phasing. EOS-01 has been developed at the cost of roughly 125 crore.

PSLV-C46 was a mission of the Indian Polar Satellite Launch Vehicle (PSLV) rocket, launched on Thursday, May 22, 2019, at 05:30 Hrs (IST) by the Indian Space Research Organisation (ISRO) from the first launch pad of the Satish Dhawan Space Centre at Sriharikota, Andhra Pradesh. In this mission, the 'Core-Alone' configuration of PSLV was flown.

PSLV-C47 was a mission of the Indian Polar Satellite Launch Vehicle (PSLV) rocket, launched on Thursday, November 27, 2019, at 09:27 Hrs (IST) by the Indian Space Research Organisation (ISRO) from the second launch pad of the Satish Dhawan Space Centre at Sriharikota, Andhra Pradesh.

References

  1. "Display: RISAT-2B 2019-028A". NASA. 27 April 2021. Retrieved 14 May 2021.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  2. "Earth Observation Satellite RISAT-2B". Press Information Bureau - Government of India. 4 July 2019. Retrieved 15 May 2021.
  3. "RISAT-2B: Radial Rib Antenna". ISRO. 22 May 2019. Archived from the original on 29 May 2019. Retrieved 15 May 2021.
  4. "PSLV-C46 / Risat-2B mission a success, ISRO places radar imaging earth observation satellite in orbit". The Times of India. 22 May 2019. Retrieved 15 May 2021.
  5. "India Successfully Launches RISAT-2B Earth-Observation Satellite". SPACE.com. Retrieved 15 May 2021.