Best Drones in 2022
If you are looking for the best drones to spend your money on, we’ve put together a list of the best drones and UAVs with their top features.
Remote Sensing
What is a Point Cloud?
A point cloud is a collection of points for storing data in LiDAR systems. Pulses of light represent the millions of points in a point cloud.
Spatial Resolution vs Spectral Resolution
Spatial resolution is how detailed objects are in an image based on pixels. But spectral resolution is the amount of spectral detail in a band.
Best Handheld GPS Receivers
Whether you’re hiking, geocaching, fishing, snowmobiling, or hunting, we are here to guide you through some of the best handheld GPS today.
Learn Synthetic Aperture Radar (SAR) by Example
Synthetic Aperture Radar (SAR) is an emerging technology in remote sensing with the advantage to see in any weather condition and even at night.
Hyperspectral Imaging from Space
Hyperspectral imaging takes a spectrum of light and divides the light into hundreds of narrow spectral bands. For example, Hyperion has 242 bands at 30m GSD.
What is Photogrammetry?
Photogrammetry uses photographs from at least two different vantage points. It obtains depth and perspective because of separate points of observation.
GOES vs POES (Geostationary and Polar Operational Environmental Satellites)
GOES and POES are both operational environmental satellites. But they actually share more in common such as their 40+ year legacy in space.
Worldview Satellite by DigitalGlobe
DigitalGlobe’s cutting-edge high resolution Worldview satellite carves out ridiculously crisp imagery at 31 cm in 8 spectral bands.
![MODIS: Moderate Resolution Imaging Spectroradiometer [Satellite]](https://gisgeography.com/wp-content/uploads/2019/06/aqua-satellite.jpg)
MODIS: Moderate Resolution Imaging Spectroradiometer [Satellite]
Despite popular belief MODIS is a satellite, it’s actually an instrument on-board a satellite. It has 36 bands, 250-1000 meter resolution and 2-day revisits.