CCTV News: On the afternoon of April 27, the Shenzhou 19 and Shenzhou 20 astronauts completed the in-orbit transfer at the China Space Station. The Shenzhou 19 astronauts have completed all the established missions and will return to the Dongfeng landing site on the Shenzhou 19 manned spacecraft on the 29th. The comprehensive aerospace situation display system independently developed by Jiuquan Satellite Launch Center has been fully launched, and a "digital skynet" of measurement and control was weaved for the return capsule to guard the astronauts' safe return home throughout the journey.
The Shenzhou 19 manned spacecraft returned mission conducted the last comprehensive drill in the system-wide comprehensive drill, representing the Shenzhou spacecraft's red light spots moving slowly along the precisely calculated return orbit towards the Gobi Desert in the northwest of the motherland - Dongfeng Landing Field. Li Jun from Jiuquan Satellite Launch Center introduced: "The comprehensive display system of space situations is like moving mobile phone navigation into space, and it can grasp where the return capsule is now and how it is flying in real time."
The comprehensive display system of space situations uses real-time data drive, which can quickly convert the measurement and control data returned by the return capsule and each measurement and control site into visual animation, calculate the relative position of the return capsule landing point in real time, and provide the equipment with assisted guidance for tracking time, angle, position and other information based on the theoretical landing point of the return capsule and the radar, optical, telemetry and other measurement and control equipment of each point, and provide the equipment with assisted guidance in tracking time, angle, position and other information. Li Jun said that in the return task, the information synchronization requirements of the return capsule landing point and the search and rescue force are relatively high, and scientific and technological personnel have carried out "data persistence" management to achieve accurate traceability of task data.
At present, the software and hardware of the Jiuquan Satellite Launch Center's measurement and control system have been stable and reliable in the two comprehensive drills of the entire system, and are ready for the task.
