Launched and operated by CG Satellite, meet Jilin-1, the only world’s only high-resolution, color satellite constellation collecting nighttime imagery. Offered at 92-centimeter (cm) resolution, nighttime imagery from Jilin-1 is the ideal solution for a plethora of problems only now solvable by this satellite constellation, including:
- Light pollution studies
- Population estimates
- Detection of burnt out street and building lights
- Measurement of short-term disturbances in power delivery caused by natural disasters
- Change detection
- Monitoring of illegal nighttime fishing
- Modeling of anthropogenic carbon emissions
In this perhaps brief series focused on the 92-cm nighttime satellite, Jilin-1, we feature new image samples plus filters that can highlight different details or change the use case of the data. For likely our final nighttime Jilin-1 sample (sorry but we are out of samples!) we travel from India back to one of Europe’s largest cities. The 92-cm nighttime Jilin-1 image featured here was collected on February 17, 2019 over Berlin, Germany (Image Courtesy: CG Satellite). The first two images are static JPEGs and they have been processed by Apollo Mapping for improved clarity and enhanced brightness. We love how colorful both samples are, they really showcase the possibilities of Jilin-1 nighttime imagery. In the animation here, we cleaned up the second image to reduce noise, maintain sharpness and even some faint lights plus accentuate the colors of the lights. Hopefully we are able to get our hands on more samples of Jilin-1 but if not at least this four part series has shown our readers what is possible with this unique dataset!
Jilin-1 Specifications Summary
If you are new 92-cm color, nighttime Jilin-1 satellite imagery, here is a summary of its key specifications:
- Imagery Resolution – 92-cm (at nadir), imagery delivered at native ground sampling distance (GSD)
- Spectral Bands – blue, green and red
- Approximate Equatorial Nighttime Imaging Time – 22:30 local time, Video 3/7/8; 0:00 local time, Video 4/5/6
- Average Revisit Frequency –3 days, varies by off-nadir and latitude
- Dynamic Range – 8-bits
- Footprint Dimensions – 11 kilometers (km) x 4.5 km, Video 3 satellite; 19 km x 4.5 km, Video 4/5/6/7/8 satellites
- Imaging Blackout Dates – varies by maximum North or South latitude, feasibility available with submission of project polygon
If you are interested in samples of Jilin-1 or additional specifications, you can check out our website here. And if you would like a price list that includes Jilin-1 nighttime imagery pricing or need help pricing out a specific project, send us an email anytime at sales@apollomapping.com.
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