What is high resolution satellite imagery?
Resolution refers to the smallest size an object or detail can be represented in an image. Higher resolution means that pixel sizes are smaller, providing more detail. For example, 30cm resolution satellite imagery can capture details on the ground that are greater than or equal to 30cm by 30cm.
What does a high spatial resolution mean?
In terms of digital images, spatial resolution refers to the number of pixels utilized in construction of the image. Images having higher spatial resolution are composed with a greater number of pixels than those of lower spatial resolution.
When did the Landsat 8 sensor come out?
Landsat 8 was launched February 11, 2013, and contains two sensors. One collects 8-band multispectral imagery at 30-meter resolution, as well as panchromatic imagery at 15 meters. The other collects thermal imagery at 100-meter resolution.
What kind of imagery does Landsat 8 take?
One collects 8-band multispectral imagery at 30-meter resolution, as well as panchromatic imagery at 15 meters. The other collects thermal imagery at 100-meter resolution. The orbit of the satellite results in it capturing 170-by-185-kilometer-sized scenes along a predefined path that returns to the same location every 16 days.
How is the resolution of the Landsat satellite?
The satellite provides images with a moderate resolution which varies in different bands from 15 m per pixel in the most accurate to 100 m in the LongWave Infrared where accuracy is not vital.
What are the different bands in Landsat 8?
The opportunity given is to substitute the true color of the image with the color required. Band 2, 3 and 4 (Blue, Green and Red filters respectively) all together these filters are creating a true color band combination or normal RGB picture of the visible light. The basic aim of these filters is to create a visual map of the area.