Communication between 1, TT&C and spacecraft
2. Pulsar timing array and autonomous navigation
3. Incoherent Scattering Radar Receiving System
4. High resolution microwave patrol
Goal:
1, FAST has the ability to extend the observation of neutral hydrogen to the edge of the universe and reproduce the early images of the universe.
2. Thousands of pulsars can be found in one year, and a pulsar timing array can be established to participate in future pulsar autonomous navigation and gravitational wave detection.
3. Lead the international very long baseline interferometry network to obtain the ultra-fine structure of celestial bodies.
4. Conduct high-resolution microwave patrol to detect weak space signals.
5. Participate in the search for extraterrestrial civilization.
6. Participate in meridian chain project to improve the performance of incoherent scattering radar dual-computer system.
7. Extend the deep space communication capability to extrasolar planets, and improve the satellite data receiving capability by 100 times.
Extended data:
System structure of 500-meter spherical radio telescope (FAST)
1. Site survey and excavation system: It is planned to conduct detailed engineering survey on the topography, engineering geology and hydrogeological environment of the selected area, excavate the earth and stone in the whole engineering area of the active reflection surface of FAST telescope, and design the sunken drainage channel.
2. Measurement and control system: build a measurement reference network consisting of 10 mm precision reference stations. Through nine short-distance measurement base stations, the shape of the reflecting surface is scanned in real time; Real-time feedback control of feed cabin is realized by using laser tracker and laser tracking system. Establish a field bus system to realize the active deformation of the mirror; Construction of real-time detection and health monitoring system.
3. Feed and receiver system: develop a high-performance multi-beam feed receiver with a frequency of 70MHz-3GHz. Develop feed, low noise refrigeration amplifier, broadband digital intermediate frequency transmission equipment, high stability clock and high precision frequency standard equipment. Configure multi-purpose digital astronomical terminal equipment.
4. Construction of observation base: mainly responsible for the construction of observation base and auxiliary facilities (including road construction, etc. ) Ensure high-quality support for the operation, observation and maintenance of the telescope and meet the work and life needs of FAST staff. According to the functional requirements, the construction planning of the observation base includes a comprehensive building, a maintenance workshop and sporadic buildings scattered around the base and the reflecting surface.
References:
Baidu Encyclopedia-500-meter spherical radio telescope (FAST)