The Landsat Data Continuity Mission (LDCM) is on schedule for a December 2012 launch date. The mission is being managed by an interagency partnership between NASA and the U.S. Geological Survey (USGS). NASA leads the development and laun... J Irons,P Sabelhaus,J Masek,... 被引量: 0发...
To date, the best on-board calibration source for the reflective bands has been the Full Aperture Solar Calibrator, which has indicated changes of at most -1.8% to -2.0% (95% C.I.) change per year in the ETM+ gain (band 4). However, this change is...
Launch date: April 15, 1999 Source: United States (US) Launch site: AIR FORCE WESTERN TEST RANGE (AFWTR) LANDSAT 7 was a joint project between NASA, NOAA, and the US Geological Survey to obtain continuous high-resolution imagary of the Earth's surface. The satellite's main capabilities:...
Landsat7 ETM+ Satellite Sensor Specifications Launch Date15 April 1999, at Vandenberg Air Force Base in California Spatial Resolution15m Panchromatic, 30m VNIR/ SWIR and Thermal Orbit705 +/- 5 km (at the equator) sun-synchronous Orbit Inclination98.2 +/- 0.15 ...
Landsat 7 April 15, 1999 Still active 16 years, 1 month and 8 days Operating with scan line corrector disabled since May 2003 Landsat 8 February 11, 2013 Still active 2 years, 3 months and 12 days Originally named Landsat data Continuity Mission from launch until May 30, 2013, when NASA...
Landsat 7's Enhanced Thematic Mapper Plus (ETM+)improved on the TM sensor by adding a 15 m resolution panchromatic band.Landsat's 8 Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS)further improved spectral resolution by adding an aerosol, cirrus, and additional infrared bands. ...
To date, NASA has launched eight Landsat satellites under the program, which is a joint effort with the U.S. Geological Survey. Landsat 7, which launched in 1999, has also outlived its three-year design and remains operational. The program's eighth satellite, the Landsat Data Continuity ...
For Landsat 7 images, the ETM' sensor has been carefully monitored since launch (Markham et al. 2004). As such, the conversion of ETM' Level 1 radiometry to at-sensor radiance was a simple matter of applying the rescaling gains and biases from the ETM' header file to the imagery. For ...
Landsat-7 Enhanced Thematic Mapper (ETM)+, the best-characterized sensor of the series prior to launch and once on orbit, and the most stable system to date, was chosen to serve as the reference. The Landsat-7 project was the first of the series to build an image assessment system into...
Africa, northern Eurasia, and Antarctica, the density of global acquisitions suffered during the 1990s until the launch of Landsat-7. Table 2.Landsat spacecraft characteristics Empty CellContractorMass (kg)Power (W)Earth observing payloadOnboard science data storageScience data transmissionScience data ...