Kolejny Gaofen 30.03. o 22:45 z Jiuquan wystrzelona została RN CZ-4C, która wyniosła na orbitę o parametrach: hp=594 km, ha=600 km, i=97,84° satelitę teledetekcyjnego Gaofen-12 (02).
http://lk.astronautilus.pl/n210316.htm#06Long March-4C launches Gaofen-12-021213 wyświetleń•31 mar 2021
China launches new Earth observation satelliteSource: Xinhua| 2021-03-31 07:38:10|Editor: huaxia
JIUQUAN, March 31 (Xinhua) -- China sent a new Earth observation satellite into space from the Jiuquan Satellite Launch Center in northwest China at 6:45 a.m. Wednesday (Beijing Time).
The satellite, Gaofen-12 02, was launched aboard a Long March-4C rocket and entered its planned orbit successfully.
The satellite will be used in land surveys, urban planning, road network design and crop yield estimation, as well as disaster relief.
It was the 364th flight mission of the Long March carrier rocket series.
http://www.xinhuanet.com/english/2021-03/31/c_139848078.htmChina launches second Gaofen-12 Earth observation satelliteby Andrew Jones — March 31, 2021
A Long March 4C lifts off carrying the Gaofen-12 (02) satellite from Jiuquan on March 30, 2021. Credit: CASCHELSINKI — China successfully launched the Gaofen-12 (02) satellite Tuesday, marking latest in a line of high resolution satellites to boost the country’s Earth observation capabilities.
A Long March 4C rocket lifted off from Jiuquan, northwest China at 6:45 p.m. Eastern Tuesday.
The first indication of the upcoming launch came from airspace closure notices, with the type of rocket and mission payload unknown.
The China Aerospace Science and Technology Corp. (CASC) announced launch success within an hour later (Chinese). The release confirmed the Long March 4C rocket and the payload as Gaofen-12 (02).
The Gaofen-12 (02) satellite was sent into 594 x 600 kilometer sun-synchronous orbit, according to U.S. satellite tracking. The first Gaofen-12 was launched into a similar initial orbit in December 2019.
The Gaofen-12 (02) (‘high resolution 12-02’) satellite is nominally part of the civilian China High-resolution Earth Observation System (CHEOS). Chinese media state reports that the satellite will be used in land surveys, urban planning, road network design and crop yield estimation, as well as disaster relief.
The Gaofen-12 (02) satellite was developed by the Shanghai Academy of Spaceflight Technology (SAST), subordinate to CASC, China’s main space contractor. The mission patch includes an eagle with the Atlantic ocean highlighted in a background map.
CHEOS was initiated in 2010 to provide all-weather, all-day coverage with optical and synthetic aperture radar satellites.
Resolution capabilities and other information has been published for lower numbered Gaofen series satellites. However information for Gaofen satellites numbered 8 and above has not been openly released, suggesting the satellites are for national defense purposes.
Renders of the satellite in orbit on shown on state television suggest that satellites such as Gaofen-11 are large (1.5-meter-diameter-plus) aperture optical remote sensing satellites.
An article published by the Chinese Society for Geodesy, Photogrammetry and Cartography (Chinese) states that Gaofen-11 has the capability to return optical imagery at a resolution of around 10 centimeters. The interview-based article claims that this is comparable to the believed capabilities of the U.S. Keyhole classified reconnaissance satellite system.
The Gaofen satellite launch Tuesday was China’s eighth of 2021. CASC states that it plans to launch more than 40 times this year. Other state-owned and commercial companies are also planning launches.https://spacenews.com/china-launches-second-gaofen-12-earth-observation-satellite/China launches Gaofen Earth observation satelliteMarch 30, 2021 Stephen Clark
(...) China says the CHEOS satellite fleet is a civilian-operated program comprising optical and radar imaging spacecraft. Chinese authorities have published high-resolution imagery taken by previous Gaofen satellites, suggesting there is a civilian component to their missions. Other satellites, like the Yaogan series, are for primarily military purposes. (...)
In a post-launch statement, CASC said the Gaofen 12-02 satellite will be used for land surveys, urban planning, road network design, crop yield estimation, and disaster prevention and mitigation.
The CHEOS satellite fleet includes spacecraft with optical and radar imaging instruments. It is not clear whether the Gaofen 12-02 satellite is designed for optical or radar observations.
The first Gaofen 12-type satellite launched on a Long March 4C rocket in November 2019. The Long March 4C rocket can carry a payload of up to 6,600 pounds (3 metric tons) to a 435-mile-high (700-kilometer) polar sun-synchronous orbit, according to CASC.
The Long March 4C launch Tuesday marked China’s eighth orbital launch attempt this year. Seven of the missions have been successful.
https://spaceflightnow.com/2021/03/30/china-launches-gaofen-earth-observation-satellite/https://www.nasaspaceflight.com/2021/03/gaofen12-2-satellite-launch/https://space.skyrocket.de/doc_sdat/gf-12.htm
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