KOMPSAT-3

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KOMPSAT-3
G SA KOMPS-3 01.jpg
NamesKorean Multi-purpose Satellite-3
Arirang-3
Mission type Earth observation
Operator Korea Aerospace Research Institute
COSPAR ID 2012-025B OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 38338
Mission duration4 years (planned)
11 years and 10 months (in progress)
Spacecraft properties
Spacecraft type KOMPSAT
Manufacturer Korea Aerospace Industries
Korea Aerospace Research Institute
EADS Astrium (bus)
Launch mass980 kg (2,160 lb)
Dimensions2.9 m in diameter x 3.5 m in height
Power1.3 kW
Start of mission
Launch date17 May 2012, 16:39 UTC
Rocket H-IIA (202) (# 21)
Launch site Tanegashima Space Center
Contractor Mitsubishi Heavy Industries
Entered service29 March 2013
Orbital parameters
Reference system Geocentric orbit [1]
Regime Sun-synchronous orbit
Altitude685 km (426 mi)
Inclination 98.13°
Period 98.5 minutes
Instruments
Advanced Earth Imaging Sensor System (AEISS)
KOMPSAT programme
  KOMPSAT-2
KOMPSAT-5  
 

KOMPSAT-3 (Korean Multi-purpose Satellite-3), also known as Arirang-3, [2] is a South Korean multipurpose Earth observation satellite. It was launched from Tanegashima Space Center, Japan at 16:39 UTC on 17 May 2012. Like the earlier KOMPSAT-1 and KOMPSAT-2 satellites, it takes its name from the popular Korean folk song Arirang. Its launch was the culmination of a project begun in 1995. [3]

Contents

KOMPSAT-3 orbits at a height of 685.1 km (425.7 mi), circling the Earth 14 times per day, and is expected to maintain that orbit for 4 years. It weighs 980 kg (2,160 lb). The satellite carries an Advanced Earth Imaging Sensor System (AEISS), which can distinguish to a 70-cm resolution, allowing the identification of individual vehicles on the ground. [4]

The satellite was succeeded by KOMPSAT-5 and KOMPSAT-3A, which were launched on 2013 and 2015 respectively.

History

South Korea started the KOMPSAT programme in 1995 to nurture its national Earth-imaging industry and supply services for remote-sensing applications. The South Korean KOMPSAT-3 Earth-imaging satellite was developed by Korea Aerospace Industries (KAI) and Korea Aerospace Research Institute (KARI), in partnership with EADS Astrium, to assure continuity with the KOMPSAT-2 satellite launched in 2006. KOMPSAT-3 was orbited on 17 May 2012 by a launch vehicle from Tanegashima Space Center, Japan. SI Imaging Services is the worldwide exclusive distributor of KOMPSAT imagery since November 2012. [4]

Technologies

Orbit

KOMPSAT-3 operates in a near-polar, circular Sun-synchronous orbit. The orbital parameters are:

Instruments

KOMPSAT-3's instruments are designed to acquire high- and very-high-resolution imagery with a footprint of 16.8 km. The satellite has the capacity to acquire 20 minutes of imagery on each orbit and it can steer its sensors both ways out to 30° off track. Panchromatic and multispectral images can be acquired at the same time.

KOMPSAT-3 radiometer features:

Kompsat-3 radiometric parameters
modeChannelSpectral bandSpatial resolutionFootprint
Multispectral10.45 - 0.52 μm (blue)2.8 m16.8 km
20.52 - 0.60 μm (green)2.8 m16.8 km
30.63 - 0.69μm (rouge)2.8 m16.8 km
40.76 - 0.90 μm (near-infrared)2.8 m16.8 km
PanchromaticP0.50 - 0.90 μm (black and white)70 cm16.8 km

Ground receiving stations

Two receiving stations deliver KOMPSAT-3 imagery 1 to 3 days after acquisition. The Deajeon station in South Korea is responsible for tasking the satellite.

Advantages and applications of KOMPSAT-3 imagery

KOMPSAT-3 is designed for very-high-resolution (VHR) remote-sensing applications, such as:

South Korea

It serves along with the existing Kompsat-2 to provide continuous satellite observation of the Korean Peninsula, sending images twice a day at 01:30 and 13:30. [5]

See also

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References

  1. "Trajectory: Kompsat 3 2012-025B". NASA. 21 October 2021. Retrieved 22 October 2021.PD-icon.svg This article incorporates text from this source, which is in the public domain.
  2. "KOMPSAT 3 (Arirang 3)". Gunter's Space Page. 7 July 2020. Retrieved 22 October 2021.
  3. "KOMPSAT-1". ESA eoPortal Directory. 2021. Retrieved 22 October 2021.
  4. 1 2 "KOMPSAT-3". ESA eoPortal Directory. 2021. Retrieved 24 October 2021.
  5. "Arirang-3 launch lifts Korea's space program". The Korea Herald . 19 June 2012. Retrieved 24 October 2021.