Geographical conditions for building the eye of heaven

Geographical conditions for the construction of the Eye of Heaven: The valley of several hundred meters is surrounded by mountains, shielding the electromagnetic waves outside.

Sky Eye is a 500-meter spherical radio telescope. The 500m spherical radio telescope is located in Dawodang depression, Jinke Village, Kedu Town, Pingtang County, Qiannan Buyi and Miao Autonomous Prefecture, China. It is 85 kilometers northeast of Pingtang County and 45 kilometers southwest of Luodian County.

The 500-meter spherical radio telescope project laid a spherical cap-shaped active reflector with a diameter of 500 meters in Guizhou karst depression, and formed an instantaneous paraboloid with a diameter of 300 meters in the observation direction through active control.

Application value

The construction of 500-meter spherical radio telescope involves antenna manufacturing, high-precision positioning measurement, high-quality radio receiver, sensor network and intelligent information processing, ultra-wideband information transmission, mass data storage and processing and many other high-tech fields.

The key technical achievements of FAST can be applied to many related fields, such as large-scale structural engineering, high-precision dynamic measurement within a kilometer, development of large industrial robots and multi-beam radar devices. The construction experience of the 500-meter spherical radio telescope will have an impact on the development of China's manufacturing technology towards informationization, limitation and greening.

Extending China's space TT&C capability from geosynchronous orbit to the outer edge of the solar system will increase the downlink speed of deep space communication data by several times. The measurement accuracy of pulsar arrival time is improved from 120 nanoseconds to 30 nanoseconds, making it the most accurate pulsar timing array in the world and making pulsar clocks for the prospective research of autonomous navigation.

Carry out high-resolution microwave patrol, diagnose and identify weak spatial signals with a resolution of 1 Hz, and serve national security as a passive strategic radar. It can be used as the receiving system of incoherent scattering radar in meridian engineering, providing high resolution and observation efficiency; Tracking and detecting coronal mass ejections serve the space weather forecast.