WI
What is SAR?
Synthetic Aperture Radar (SAR) is a specific satellite that can capture imagery in all weather conditions, day or night. SAR sends a microwave radar signal to the earth’s surface to detect physical properties.
explains common terms used
in the geospatial industry.
Synthetic Aperture Radar (SAR) is a specific satellite that can capture imagery in all weather conditions, day or night. SAR sends a microwave radar signal to the earth’s surface to detect physical properties.
Indices are calculated using the multispectral bands. These calculations result in the outputs being in the form of an index with values between 0-1. At the same time, the indices provide additional information about the ground surface being imaged.
Multispectral outputs are made up of bands within the multispectral spectral ranges. The different options include true colour, false colour urban, false colour infrared, and all optical bands.
Image output is about determining the color or bands and indices you want to obtain in order to gain valuable information about your AOI.
Using a console like EarthCache, archive satellite imagery is a purchasing option for imagery that has already been collected. Archive imagery can be passively collected by satellites that constantly collect over the earth.
Tasking is the act of “ordering” new satellite imagery from a specific satellite. To task a satellite, coordinates of an area of interest (AOI), time frame and interval are sent to the satellite provider.
In simple terms, remote sensing is the act of detecting objects in an area and measuring their movements from space.
For satellite data, latency refers to the time between satellite observation and the time data is available to users.
Temporal resolution, also known as re-visit rates, vary from different providers. Temporal resolution provides information on the time difference between the acquisitions of two images over the same area.
Spectral resolution is the ability of a satellite sensor to detect distinct ranges of wavelengths in the electromagnetic spectrum.
Resolution refers to the spatial resolution a data product has. Spatial resolution can be defined as the amount of data on the ground a single image pixel represents.
Very high resolution (VHR) refers to the spatial resolution size of a satellite image. In simple terms, the resolution type will determine the clarity of your optical image.
High resolution refers to the spatial resolution size of a satellite image. In simple terms, the resolution type will determine the clarity of your optical image.
Medium resolution refers to the spatial resolution size of a satellite image. In simple terms, the resolution type will determine the clarity of your optical image.
Medium resolution refers to the spatial resolution size of a satellite image. In simple terms, the resolution type will determine the clarity of your optical image.
TerraStream is SkyWatch's integrated services platform for satellite data providers.
EarthCache is a satellite imagery marketplace and API. It connects customers to one of the largest marketplaces of satellite data providers in the world.
In a marketplace console like EarthCache, Mosaicking is an optional setting that allows for multiple images from the same satellite sensor to be mosaicked (aka "stitched") together.
AOI is an acronym for “Area of Interest.”
Knowing your desired AOI will help you in planning your data collection with satellites to ensure you get the right technology in the right place and at the right time.
