What is Bit Depth for Satellite Data (and Images)

What is Bit Depth Bit depth is the measure of detail in every pixel communicated in units of bits. A 1-bit raster contains two qualities (zero and one). While an 8-bit raster ranges from 0-255 (256 qualities altogether). A 1-bit Read More …

Landsat File Naming Convention – Scene Identifiers

What is the naming convention for Landsat scene identifiers? Have you at any point thought about what all the letters and numbers mean in a Landsat scene? It most likely resembles this – LC80390222013076EDC00. But what does that mean? In Read More …

Lossless Compression vs Lossy Compression

What is the difference between lossy and lossless compression? We frequently separate picture pressure into two classes – lossy and lossless pressure. Lossy compression reduces file size by for all time dispensing with certain data. In particular, it disposes of Read More …

Trilateration versus Triangulation – How GPS Receivers Work

Trilateration versus Triangulation – How GPS Receivers Work

GPS Receivers Use Trilateration Have you at any point thought about how your GPS beneficiary functions? They utilize a strategy called trilateration. Despite how GPS receivers are frequently mistaken for triangulation (which estimates points), they truly don’t use edges by Read More …

Geosynchronous versus Geostationary Orbits

Geosynchronous vs Geostationary Orbits

Geosynchronous versus Geostationary Orbits What is the difference between geosynchronous and geostationary orbits? There’s a sweet spot over the Earth where a satellite can coordinate a similar pivot of the Earth. This exceptional situation in the high Earth circle is Read More …

gps accuracy hdop pdop gdop multipath

GPS Accuracy: HDOP, PDOP, GDOP, Multipath & the Atmosphere

GPS Accuracy: HDOP, PDOP, GDOP, Multipath & the Atmosphere Have you ever wondered about your GPS accuracy? An all-around planned GPS receiver can achieve a horizontal accuracy of 3 meters or better and vertical exactness of 5 meters or better Read More …

What is NDVI (Normalized Difference Vegetation Index)?

What is NDVI (Normalized Difference Vegetation Index)?

Normalized Difference Vegetation Index (NDVI) evaluates vegetation by estimating the contrast between close infrared (which vegetation strongly reflects) and red light (which vegetation absorbs). NDVI always ranges from -1 to +1. But there isn’t a distinct boundary for each type Read More …

Polar Orbit versus Sun Synchronous Orbit

Polar Orbit vs Sun Synchronous Orbit

Polar Orbit versus Sun Synchronous Orbit Sun-synchronous orbit vs polar orbit In general, there are two groups of satellites: There are satellites that circle the equator, and those that circle from shaft to-post. For example, Landsat, Worldview and Sentinel-2 satellites Read More …

SRTM Shuttle Radar Topography Mission

SRTM Shuttle Radar Topography Mission

Space Shuttle Radar Topography Mission (SRTM) During its 11-day strategic, space transport Endeavor circled the Earth multiple times. A major aspect of this strategy caught Earth’s topography at 1 circular segment second (30 meters) for over 80% of the Earth’s Read More …

Sentinel Satellites of the Copernicus Programme

Sentinel Satellites of the Copernicus Programme

Sentinel Satellites of the Copernicus Programme Global Monitoring for Environmental Security (GMES) Copernicus is the world’s largest and most aggressive Earth perception program in presence today. Recently known as GMES (Global Monitoring for Environment and Security), it plans to handle Read More …