Taiji-1, which is the first experimental satellite for space gravitational wave detection in China, relies on key technologies which include the laser interferometer, the gravitational reference sensor (GRS), the micro-thruster and the satellite platform. Similarly to the Laser Interferometer Space Antenna (LISA) pathfinder, except for the science interferometer, the optical bench (OB) of Taiji-1 contains reference and test mass (TM) interferometers. Limited by the lower mechanical strength of the carrier rocket and by the orbit environment, the OB of Taiji-1 is made of invar steel and fused silica, and it is aimed to achieve a sensitivity of the order of 100pm/Hz. The experimental results from in-orbit tests of Taiji-1 demonstrate that the interferometer can reach a sensitivity of 30pm/Hz in the frequency range of 0.01–10Hz, which satisfies the requirements of Taiji-1 mission.

中文翻译：

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太极一号实验卫星激光干涉仪在轨性能

太极一号是我国第一颗空间引力波探测实验卫星，依托激光干涉仪、引力参考传感器（GRS）、微型推进器和卫星平台等关键技术。与激光干涉仪空间天线 (LISA) 探路者类似，除了科学干涉仪外，太极一号的光具座 (OB) 包含参考和测试质量 (TM) 干涉仪。受限于运载火箭较低的机械强度和轨道环境，太极一号的OB由殷钢和石英玻璃制成，旨在达到100级的灵敏度下午/赫兹. 太极一号在轨试验实验结果表明干涉仪灵敏度可达30下午/赫兹在 0.01–10 的频率范围内Hz，满足太极一号任务要求。