KOMPSAT-3A

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The major goal of the KOMPSAT-3A program is to develop an earth observation satellite to obtain IR (Infrared) and high resolution EO (Electro-Optical) images for GIS (Geographical Information Systems) applications in environmental, agricultural and oceanographic sciences as well as natural disasters.

In addition, The KOMPSAT-3A program is devoted to industrialization of the bus system development by the domestic companies. It was launched on 25th of May,2015. The mission orbit is a sun-synchronous orbit at an altitude of 530 km during 4 years.

Mission objectives:

• Data continuation after KOMPSAT-3
• Provision of the high-resolution EO (Electro-Optical) images
• Provision of IR (Infrared) images

Payload: AEISS-A

• Identical with KOMPSAT-3 for visible
• Additional IR band

Orbit

• 528 km altitude
• Better GSD than KOMPSAT-3

For more information:http://www.kari.re.kr/data/eng/contents/Space_020.asp?catcode=1010111900&depthno=0

Specifications
Ground Sampling Distance PAN: 0.55mat 528km altitude (nadir)
MS: 2.2m at 528km altitude (nadir)
IR: 5.5 m at 528km altitude (nadir)
Swath Width > 13km (nadir)
Spectral Bands PAN: 450-900 µm
MS1 (Blue): 450-520 µm
MS2 (Green): 520-600 µm
MS3 (Red): 630-690 µm
MS4 (NIR): 760-900 µm
MWIR: 3.3 µm - 5.2 µm
Modulation Transfer Function System MTF at Nyquist fr. For PAN: 8%
System MTF at Nyquist fr. For MS:8%
System MTF at Nyquist fr. For MS: 8%
NETD 0.05K at 300K
Imaging Capability

• Day time and night time imaging
• 270,000km² / day
• Channel selection: PAN / IR / PAN+MS / PAN+MS+IR