Chinese Small Satellites as Good as US Ones in Resolution Ratio

Recently China has made public a clear photo of US aircraft carrier taken by a satellite in its Jilin-1 satellite group. The photo has drawn wide interest as it shows that Chinese satellite has quite a satisfactory resolution ratio.

China now relaxed its control of satellite photos from resolution of one meter to half a meter. As US charges $150 a square km while China charges less than $10, China will grab a large market share in satellite photo market due to not only the low price but also the short delivery time of 36 hours.

US is making efforts to heighten its resolution ratio to 0.25 meters but can only achieve a ratio of 0.31 meter so far.

To the question why China provides photos with resolution ratio of only 0.50 meter, experts’ reply is that it is the best allowed by Chinese authorities for the public.

In order to take a substantial share of the lucrative satellite photo market, China’s Changguang Satellite Technology Company plans to have 60 satellites in orbit by 2020 and 138 by 2030.

Moreover, China will build 12 large earth stations to receive satellite data with 40 sets of large-diameter antennae.

Source: “How powerful China’s small satellites are? Highest resolution ratio close to US counterparts” (summary by Chan Kai Yee based on the report in Chinese)


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