Interesting, what is the resolution of gaofen 4? everything else equal, this new thing will be 9 times higher in resolution.
Gaofen 4 has 50m resolution. so this new camera should give 5 m resolution if it park in Geo synchronous orbit It should have no problem differentiating AC from Tanker.
Video from Jilin 1 real time tracking of an aircraft with 80cm resolution
This is an old article about plan to develop powerful camera
spy-satellite-continues-chinas-great-leap-forward-into-space
China researches high resolution imaging from high orbit
Source: Xinhua 2016-09-01 15:04:18
CHANGCHUN, Sept. 1 (Xinhua) -- Chinese researchers are confident of making technological breakthroughs over the next four years in developing high resolution imaging that can see car-sized objects on the earth from high orbit.
Researchers at the Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP) are studying camera technologies suited for satellites 36,000 kilometers away from earth, with significant government support.
The CIOMP plan aims to achieve an optical resolution of 2.5 meters for the camera. This is the equivalent of seeing a hair clearly from 800 meters away.
The technologies being researched will enable cameras to operate on satellites in high orbit, known as geostationary orbit, allowing the cameras to appear stationary in the sky and view the same point on earth continuously.
China already has high-resolution imaging in space, but at a lower orbit of about several hundred kilometers away from earth. Low-orbiting satellites constantly move around the earth and can only take snapshots of the earth as they fly.
Based on its considerable experience in the area, CIOMP is confident of completing the research by the end of 2020, said CIOMP deputy head Zhang Xuejun.
Here is old article from Skywatcher about Gaofen 4
On December 28, 2015, a Long March 3B/G2 rocket launched from Xichang and lofted into space the 4.6 ton Gaofen-4 imaging satellite.
GAOFEN 4 ORBIT
The GEO orbit of Gaofen 4 means that it can maintain continuous coverage of Chinese territory and surrounding areas. It's also the most powerful GEO satellite, good enough to track aircraft carriers in near real time from space.
Billed as a disaster relief satellite, the Gaofen 4 was placed in Geosynchronous Orbit (GEO). GEO satellites constantly stay above a patch of Earth, thus providing constant 24 hour surveillance of a geographic area. By contrast, low earth orbit (LEO) satellites such as the U.S. KH-11 spy satellites are closer to the Earth, so their speed exceeds that of the Earth's rotation (meaning that they cannot maintain continuous surveillance over specific locations). In the Gaofen 4's case, its range of view is a 7,000km by 7,000km box of 49 million square kilometers of Asian land and water in and around China.
GAOFEN 4
The 4.6 ton Gaofen 4 is the most powerful GEO spy satellite, with a imaging resolution of under 50 meters in color, and 400 meters for thermal imaging.
CCTV 13
The Gaofen 4 is the world's most powerful GEO spy satellite. It has a color image resolution of slightly less than 50 meters (which is enough to track aircraft carriers by their wake at sea) and a thermal imaging resolution of 400m (good for spotting forest fires). It may also have a lower resolution video streaming capacity. Because of its round-the-clock coverage of Chinese territory and near aboard, Gaofen 4 can provide instant coverage of earthquake or typhoon hit areas to support humanitarian relief. It will also allow China to monitor strategic foreign sites such as WMD facilities and naval bases inside its observation box.