![]() RISAT-2BR1 with its "Radial Rib Antenna" in deployed configuration. | |
Names | Radar Imaging Satellite-2BR1 |
---|---|
Mission type | Earth observation Radar imaging satellite |
Operator | ISRO |
COSPAR ID | 2019-089F |
SATCAT no. | 44857 |
Website | https://www.isro.gov.in/ |
Mission duration | 5 years (planned) 4 years, 8 months and 5 days (in progress) |
Spacecraft properties | |
Spacecraft | RISAR-2BR1 |
Bus | RISAT |
Manufacturer | Indian Space Research Organisation |
Launch mass | 615 kg (1,356 lb) [1][2] |
Power | 2 kW |
Start of mission | |
Launch date | 11 December 2019, 09:55 UTC |
Rocket | Polar Satellite Launch Vehicle, PSLV-C48 |
Launch site | Satish Dhawan Space Centre, First Launch Pad (FLP) |
Contractor | Indian Space Research Organisation |
Entered service | March 2020 |
Orbital parameters | |
Reference system | Geocentric orbit |
Regime | Low Earth orbit |
Perigee altitude | 555 km (345 mi) |
Apogee altitude | 555 km (345 mi) |
Inclination | 37.0° |
Period | 90.0 minutes |
Instruments | |
Synthetic Aperture Radar (X-band) (SAR-X) | |
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.[3][4] It was the 50th launch of Polar Satellite Launch Vehicle and 75th launch from Satish Dhawan Space Centre.[5][6]
Overview
[edit]The RISAT-2BR1 is follow on to RISAT-2B and has an X-band SAR with unfurlable radial rib reflector antenna of 3.6 meter diameter.[7] RISAT-2BR1 can operate in different modes including Very High Resolution imaging modes of 1 x 0.5 m resolution and 0.5 x 0.3 m resolution [8] with swath of 5 to 10 km.[9]
- Mass: 628 kg (1,385 lb) [10]
- Orbit: 557 km (346 mi) (circular) at inclination of 37.0° [2]
- Mission life: 5 years [2]
Launch
[edit]RISAT-2BR1 was launched aboard PSLV-C48 on 11 December 2019 at 09:55 UTC with nine other ride-sharing commercial satellites from First Launch Pad of Satish Dhawan Space Centre, SHAR. Launch vehicle used was -QL variant of Polar Satellite Launch Vehicle with four PSOM-XL strap-ons and employed a 195 kg Dual Launch Adapter (DLA) to accommodate primary and secondary payloads. After a flight of 16 minutes 27 seconds, RISAT-2BR1 was separated from PSLV fourth stage (PS4) and injected into 576 km circular orbit with 37.0° inclination. After primary payload, DLA and subsequently nine other co-passenger satellites were separated. RISAT-2BR1 deployed it solar panels within 3 minutes after separation and deployed its 3.6 meter antenna on 08:30 UTC, on 12 December 2019.[11][3]
Secondary payloads
[edit]Nine commercial ridesharing satellites weighed 157.6 kg cumulatively.[2][12]
- Four Lemur-2 cubesats by Spire Global.[15]
- Duchifat-3 (2.3 kg) by Sha'ar Hanegev High School students built at Herzliya Science Center.[16]
- 1HOPSAT (22 kg) high resolution video and imaging satellite by Hera systems for Seguritech of Mexico.[17]
- Tyvak-0129 (11 kg) [18][19]
- Tyvak-0092 (5 kg) (NANOVA) [20]
See also
[edit]References
[edit]- ^ "PSLV-C48/RISAT-2BR1". ISRO. Archived from the original on 13 December 2019. Retrieved 5 December 2019.
- ^ a b c d "PSLV C48 Press kit" (PDF). 5 December 2019. Archived from the original (PDF) on 10 December 2019. Retrieved 5 December 2019.
- ^ a b "PSLV successfully launches RISAT-2BR1 and nine commercial satellites in its fiftieth flight". isro.gov.in. ISRO. 11 December 2019. Archived from the original on 12 December 2019. Retrieved 12 December 2019.
- ^ "ISRO's RISAT-2BR1, 9 Other Foreign Satellites Blast Off from Sriharikota". news18.com. News18. Retrieved 11 December 2019.
- ^ Singh, Surendra (3 December 2019). "ISRO to launch another "eye in the sky" Risat-2BR1 on 11 December 2019, will help boost border surveillance". The Times of India. Retrieved 4 December 2019.
- ^ "ISRO to launch border surveillance satellite Risat-2BR1 on December 11". Business Standard India. 3 December 2019. Retrieved 4 December 2019.
- ^ "RISAT-2B - Radial Rib Antenna". isro.gov.in. ISRO. Archived from the original on 29 May 2019. Retrieved 4 December 2019.
- ^ "Rajya Sabha Unstarred Question No. 1531 - Earth Observation satellite RISAT-2B" (PDF). 4 July 2019. Retrieved 4 July 2019.
- ^ "ISRO to launch second "spy" satellite RISAT-2BR1 on 11 December 2019 to enhance India's surveillance capability". Moneycontrol. 3 December 2019. Retrieved 4 December 2019.
- ^ "RISAT-2BR1". isro.gov.in. ISRO. Retrieved 12 December 2019.
- ^ "Radial Rib Antenna of RISAT-2BR1 deployed successfully". isro.gov.in. ISRO. Retrieved 12 December 2019.
- ^ "List of International Customer Satellites Launched by PSLV" (PDF). ISRO.
- ^ "12月12日(木)小型SAR衛星「イザナギ」との初交信が成功しました!" (in Japanese). iQPS Inc. 12 December 2019. Retrieved 12 December 2019.
- ^ "福岡)ベンチャーが衛星公開 10月にもインドで発射:朝日新聞デジタル". 朝日新聞デジタル (in Japanese). Asahi. 2 September 2019. Retrieved 12 December 2019.
- ^ "Spaceflight Announces Next Three Rideshare Missions on ISRO's PSLV, Slated Through the End of 2019". Spaceflight. 21 October 2019. Retrieved 29 November 2019.
- ^ "הלוויין דוכיפת 3 ישוגר בעוד כשבועיים מהודו". הידען (in Hebrew). 30 November 2019. Retrieved 1 December 2019.
- ^ "Lanzan primer satélite enfocado para videovigilancia en México" (in Mexican Spanish). Seguritech. Retrieved 12 December 2019.
- ^ "Pathfinder Risk Reduction (Tyvak 0129)". space.skyrocket.de. Retrieved 15 January 2020.
- ^ "Lockheed Martin Launches First Smart Satellite Enabling Space Mesh Networking - January 16, 2020". Lockheed Martin. Retrieved 22 January 2020.
- ^ "אלביט שיגרה לחלל ננו-לוויין ליישומי תקשורת". israeldefense.co.il (in Hebrew). Israel Defense. 18 December 2019. Retrieved 18 December 2019.