The Earth-Moon space satellite laser ranging distance is far away, and during the daytime, under the influence of sunlight, the reflected return signal of the on-board laser corner reflector is easily submerged in the strong background noise, which is difficult to be recognized. In the past, this test can only be carried out at night with less light interference. A few days ago, the research team of "Tendu-1" TDT test star successfully carried out the Earth-Moon space satellite laser ranging technology test under the condition of strong light interference during the daytime, which is the first time in the world that satellite laser ranging is realized on the new generation of Earth-Moon space laser corner reflector during the daytime, and it marks that our country has made a new technological breakthrough in the field of deep-space orbital precision Mätningar .
Shanghai Astronomical Observatory of the Chinese Academy of Sciences (hereinafter referred to as Shanghai Astronomical Observatory) has developed a new generation of Earth-Moon space laser corner reflector for "Tiandu-1", which weighs only 1.3kg and adopts the design of large aperture single corner cone to maximize the reflection capacity, which is a key part of the success of the Dagstidssatellitlaserstest i jordmånesutrymme.
Cheng Zhi'en, senioringenjör som ansvarar för reflektorprojektet, sa att den nya generationen Earth-Moon Space Laser Angular Reflector är som en superstarka reflekterande "spegel" för att säkerställa att lasersignalerna kan vara effektivt att återlämnas till marken i det ursprungliga sättet med laserstationen, som har fördelarna med stark reflekterande förmåga, hög exakt, lätta, lätta, osv. efforts of all parties. The success of this test is the result of the joint efforts of all parties, indicating that the comprehensive performance of China's self-developed new generation of Earth-Moon space laser angle reflector has reached the international leading level, which will strongly support China's exploration of Earth-Moon space and deep space.
Foto av den nya generationen av jordmåne rymdslaserreflektor utvecklat av Shanghai Observatory: hörnreflektorkroppen (vänster) och den ljusskyddande cylindern (höger) .
The Shanghai Observatory also utilized the ground-based orbit measurement data to form a high-precision orbit forecast of the "Tiandu-1" satellite, which was used to guide the laser observatory to accurately track and target the satellite, a key part of the success of this experiment. Researcher Huang Yong, head of the Shanghai Observatory's Satellite Laser Ranging och applikationsgrupp, sade att laser i hög precision kan förbättra den kretsande noggrannheten för jordmånes rymdprober och har stor potential för vetenskapliga och tekniska applikationer .
Deep Space Exploration Laboratory "Tiandu No. 1" general responsible person in charge of the overall conductivity technology test star introduction, the smooth implementation of the daytime strong light interference conditions of the Earth-Moon space satellite laser ranging test, effectively expanding the observation window of the technology, will be a strong support for the international lunar research station and other deep space exploration of the major engineering tasks demonstration and implementation.
Teknologitestet leddes och organiserades av Deep Space Exploration Laboratory (DSEL), med Shanghai Astronomical Observatory of the Chinese Academy of Sciences (CAS) ansvarig för utvecklingen av Laser Angular-forskningsinstitutet (Sseri), Yanan Astronomical), och med den deltagande i Shanghai Satellite Engineering (SSERI), YUNNAN, JUNNISKA OMBERATORI (YA OBSICAL OBSICERING, JA A OBSERA (Ya The SUND SUND SUN Yat-Sen University (sysu) och Peking Aerospace Control Center (BAAC) .
