![](http://www.ecns.cn/hd/2023/09/28/d9960f51b35842f489cc8fd613c20796.jpg)
A view of the Daocheng Solar Radio Telescope (DSRT) in Garze Tibetan Autonomous Prefecture, southwest China's Sichuan Province, Sept. 27, 2023. (Photo: China News Service/Wu Junwei)
The world's largest synthesis aperture radio telescopes passed key testing on Wednesday. It is a landmark equipment of China's space environment ground-base comprehensive monitoring network (phase-2 Meridian Project)
The DSRT consists of 313 dishes, each with a diameter of 6 meters, forming a circle with a circumference of 3.14 kilometers. A 100-meter-high calibration tower stands in the center of the ring.
![](http://www.ecns.cn/hd/2023/09/28/044272322878449c87ffcc18bbc28924.jpg)
A view of the Daocheng Solar Radio Telescope (DSRT) in Garze Tibetan Autonomous Prefecture, southwest China's Sichuan Province, Sept. 27, 2023. (Photo: China News Service/Wu Junwei)