[Guangming Daily] These magic weapons escort the "successful reunion"

Author:田菱电子ENRelease time:2023-05-03 10:29:01


Nine days above, spread good news again. In the Shenzhou 16 manned flight mission, CETC, as the deputy commander in chief of China's Human spaceflight project, built a dense and safe measurement and control communication network, an energy matrix with full power, a laser radar with precise traction and other key equipment to ensure the complete success of the mission.

"Optical tracking is normal", "USB radar tracking is normal", "telemetry signal is normal"... The rocket took off in Jiuquan Satellite Launch Center, and dozens of seconds later, the "normal" password relay reverberated in the command hall.

Hear the reassuring "normal", the USB measurement and control network (Unified S-band measurement and control network) plays an important role. This dense measurement and control communication network is carefully woven by China Electronics Technology from the dimensions of ground measurement and control stations, maritime measurement ships, and relay satellite systems. Through precise control such as telemetry, external measurement, and security control, it provides full escort for safe launch, flight into orbit, and rendezvous and docking.

In response to the new situation and characteristics of this task, China Electronics Technology has independently developed a new generation of ground measurement and control system, and successfully applied this system to update and upgrade the USB measurement and control equipment at Dongfeng Measurement and Control Station. In the past, measurement and control systems had to first 'translate' the signals collected by the antenna in order to read available information. The new generation of ground measurement and control systems can directly skip the 'translation' process, achieve 'just take it and use it', and improve the efficiency of signal transmission and reception several times. "Technical experts stated that the new system is technologically advanced, adopting RF direct sampling technology and an all fiber interconnecting digital system architecture, greatly enhancing the anti-interference ability of signal transmission.

The new system has stronger performance and is also smarter. The software and hardware of the new system have been localized, and automated operation design has been carried out for the entire launch mission scenario. It has a complete "unmanned" capability, and even if the staff does not operate, the measurement and control system can accurately receive the operational status, real-time information, and scientific research data sent back to Earth by the spacecraft through "thinking" and "judgment", Effectively ensuring two-way communication, image transmission, measurement control, safety control, and other major tasks between astronauts and ground command centers.

To ensure that astronauts arrive at the "Space Home" on time, China Electronics Technology Corporation (CETC) injects source energy into the spacecraft with its high-performance rigid solar array "wings" and stable and reliable secondary power supply "pulse".

"By converting the received solar energy into electrical energy, the solar array can provide electrical energy for each subsystem and payload of the spacecraft, and provide charging services for the battery pack." Technical experts said that the rigid solar array equipped by CETC for Shenzhou 16 uses triple junction gallium arsenide solar cells with high conversion efficiency and good radiation resistance. This product has a stable structure and high reliability. Even in the face of the complex power supply environment of ultra-low orbit, it can be "as stable as Mount Tai", so that the "space travel" is full of power.

"Pulse" jumps steadily. CETC has independently developed a number of DC/DC converters and EMI Line filter to provide a miniaturized and highly reliable secondary power supply scheme for the rocket flight control system and spacecraft optical tracking system. Among them, the rocket borne series products can reliably supply power under strong impact and high vibration conditions during rocket launch. Shipboard series products can ensure that the spacecraft