Sejarah Satelit Landsat 6

Landsat 6 History

October 5, 1993 (did not achieve orbit)



Participants

• NASA
• National Oceanic and Atmospheric Administration (NOAA)
• Department of the Interior (DOI) U.S. Geological Survey (USGS)
• Spacecraft bus: Lockheed Martin Missiles & Space
• Enhanced Thematic Mapper (ETM): Hughes Santa Barbara Research Center

Launch

• Date: October 5, 1993
• Vehicle: Titan II
• Launched by: NASA
• Site: Western Test Range at Vandenberg Air Force Base, California

Spacecraft

• Power provided by a single sun-tracking solar array and two 50 Ampere-Hour (AHr), Nickel Cadmium (NiCd) batteries
• Attitude control provided through four reaction wheels (pitch, yaw, roll, and skew); three 2-channel gyros with celestial drift updating; a static Earth sensor; a 1750 processor; and torque rods and magnetometers for momentum uploading
• Orbit control and backup momentum unloading provided through a blow-down monopropellant hydrazine system with a single tank containing 270 pounds of hydrazine, associated plumbing, and twelve 1-pound-thrust jets
• Weight: approx. 4,800 lbs (2,200 kg)
• Length: 4.3 m (14 ft)
• Diameter: 2.8 m (9 ft)

Communications

• Direct downlink with solid state recorders capable of storing 380 gigabits of data (100 scenes)
• Data rate: 85 Mbps

Orbit (if obtained)

• Worldwide Reference System-2 (WRS-2) path/row system
• Sun-synchronous orbit at an altitude of 705 km (438 mi)
• Inclined 98.2° (slightly retrograde)
• Repeat cycle: 16 days
• Equatorial crossing time: 10:00 a.m. +/- 15 minutes

Sensors
Enhanced Thematic Mapper (ETM)

• Eight spectral bands, including a pan and thermal band:
• Band 1 Visible (0.45 – 0.52 µm) 30 m
• Band 2 Visible (0.52 – 0.60 µm) 30 m
• Band 3 Visible (0.63 – 0.69 µm) 30 m
• Band 4 Near-Infrared (0.76 – 0.90 µm) 30 m
• Band 5 Near-Infrared (1.55 – 1.75 µm) 30 m
• Band 6 Thermal (10.40 – 12.50 µm) 120 m
• Band 7 Mid-Infrared (2.08 – 2.35 µm) 30 m
• Band 8 Panchromatic (PAN) (0.52 - 0.90µm) 15 m
• Ground Sampling Interval (pixel size): 30 m reflective, 120 m thermal

Other Characteristics

• Scene size: 170 km x 185 km (106 mi x 115 mi)

sumber :
http://landsat.usgs.gov/about_landsat6.php