神舟十九号顺利返回 中国电科提供全链条全周期支撑保障

Group 1 - The Shenzhou 19 manned spacecraft successfully landed on April 30, with three astronauts returning to Earth, supported by China Electronics Technology Group Corporation (CETC) through comprehensive technological support and a safety network for the mission [1] - CETC utilized various measurement and control equipment, including portable, airborne, vehicle-mounted, and fixed stations, to create a dense communication network that ensured real-time tracking and command during the landing process [1][2] - The landing accuracy of the spacecraft was a critical test of aerospace measurement and control capabilities, with CETC conducting millions of simulations to refine the landing trajectory [1] Group 2 - During re-entry, the spacecraft experienced extreme temperatures exceeding a thousand degrees Celsius, leading to communication blackouts, which CETC addressed with self-developed radar systems for continuous tracking and measurement [2] - The radar technology developed by CETC overcame the challenges of tracking during the blackout period, ensuring the spacecraft remained within radar visibility throughout its descent [2] - The new system significantly improved communication success rates to over 95%, enhancing the stability and continuity of information for command personnel [3] Group 3 - CETC's search and rescue positioning equipment, distributed across over 10 emergency points and covering more than 7,000 kilometers, established a comprehensive search network capable of guiding rescue teams to the landing site [3] - A satellite communication system was developed to ensure real-time transmission of critical information and images during the landing and astronaut extraction processes [3] - Various communication devices, including fixed, airborne, vehicle-mounted, and portable stations, were created to support the search teams and facilitate command information transmission [3]