Missions and Sensors

The Landsat 8 and Landsat 7 satellites both maintain a near-polar, sun-synchronous orbit, following the World Reference System (WRS-2). They each make an orbit in about 99 minutes, complete over 14 orbits per day, and provide complete coverage of the...
National Land Imaging (NLI) was an interagency effort (begun in 2006) to develop a long-term plan to achieve technical, financial, and managerial stability for operational land imaging. In August 2007, the working group released the recommended plan in a...
The Worldwide Reference System (WRS) is a global notation used in cataloging Landsat data. Landsat 8 and Landsat 7 follow the WRS-2, as did Landsat 5 and Landsat 4. Landsat 1, Landsat 2, and Landsat 3 followed WRS-1.Shape files for WRS-1 and -2 (path/row...
The LDCM Long Term Acquisition Plan (LTAP-8) and the Landsat 7 Long Term Acquisition Plan (LTAP) direct the acquisition of Landsat 8 and Landsat 7 scenes, respectively. Seasonality, land definition, historical cloud cover, gain settings, and sun angle...
The Landsat satellites are not considered tasking, and data acquisition requests are not available to the general public. The Long Term Acquisition Plans for both Landsat 8 and Landsat 7 direct the daily acquisitions of satellite data.The Landsat...
Landsat Multispectral Scanner (MSS) images consist of four spectral bands with 80 meter spatial resolution. Approximate scene size is 170 km north-south by 185 km east-west (106 mi by 115 mi). Specific band designations differ from Landsat 1-3 to Landsat...
There is no difference between the two terms in reference to Landsat data sets. For most Landsat products we refer to them as bands, however, for the AVHRR data they are referred to as channels.