IKONOS (Greek for image) was one of the first commercial satellites to serve imagery to the public.
In 2000, it was a big upgrade with blue, green, red, and near-infrared (NIR) at 4-meter resolution.
In addition, it collected 1-meter panchromatic images and stereo imagery. As you may know, photogrammetrists use stereo imagery to develop digital elevation models (DEMs).
We explain everything you need to know about this satellite.
A Remarkable History
IKONOS served as one of the first commercial satellites to deliver imagery from space. In the beginning, engineers planned to have a pair satellite (IKONOS-2). They planned them to be exact replicas of each other.
However, IKONOS-1 didn’t succeed to even make it to space. IKONOS-2 was successful in 2000 and they renamed it simply IKONOS.
Space Imaging and NASA explored the whole concept of commercial satellite imagery. After this stage, the concept was then followed through from Lockheed Martin and Raytheon.
Eventually, Orbimage acquired it in 2006. Shortly after, DigitalGlobe took over the satellite, which is now owned by MDA. To say the least, there’s been a lot of turn-around.
IKONOS multispectral imagery consists of blue, green, red, and near-infrared (NIR) bands at 4-meter resolution. In addition, it collects 1-meter panchromatic images. It can obtain a 1:10,000 scale mapping without ground control and 1:2400 scale with ground control points.
Because it has a sun-synchronous orbit, it can provide coverage of the whole globe. Since it offers both nadir and off-nadir modes, revisit times vary from 3-5 days (off-nadir) and 144 days (nadir).
Each scene size is 11 km × 11 km. Although it collects data at 11-bit sensitivity, data delivery is in 16-bit (0–65535). Radiometric resolution is unsigned integer.
For its time, it was a significant development in the history of the space age.
Altogether, it paved the way for other commercial satellites. With this in mind, it began a new era of Earth intelligence from space.
This satellite provides panchromatic, natural-color, color-infrared and stereo images. In particular, this is useful for cartographic, photogrammetric and various remote sensing applications.