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fast technology reported on september 2 that it was learned from the official website of changguang satellite technology co., ltd. (referred to as changguang satellite) that today,chang guang satellite officially released the world's first high-definition global annual map - the "jilin-1" global map.

changguang satellite said that this achievement filled an international gap, and its indicators such as resolution, timeliness and positioning accuracy have reached the international leading level.

according to reports, the global map of "jilin-1" released this time isit is made up of 1.2 million images carefully selected from the 6.9 million "jilin-1" satellite images.

a global picture of "jilin-1"

this achievement has a cumulative coverage area of ​​130 million square kilometers, achieving full sub-meter-level image coverage of the world's land areas except antarctica and greenland, with the characteristics of wide coverage, high image resolution, and high color reproduction.

in terms of specific indicators,the images with a resolution of 0.5m used in the global map of "jilin-1" account for more than 90%, the image coverage of a single year accounts for more than 95% of the time phases, and the overall cloud cover is less than 2%.

compared with similar aerospace information products in the world, the "jilin-1" global map combines high spatial resolution, high temporal resolution and high coverage, and has remarkable uniqueness of results and advanced indicators.

up to now, changguang satellite has invested more than 1.3 billion yuan in research and development, achieved the in-orbit operation of 108 "jilin-1" satellites, and built the world's largest sub-meter commercial remote sensing satellite constellation, providing a massive source of high-definition remote sensing data for the annual update of the "jilin-1" global map.

schematic diagram of the "jilin-1" constellation network satellite