Abstract: In Chang’E-3 landing mission, a 2- and 3-way lunar radio total-count-phase ranging and Doppler technique was developed by the radio science experiment team. During each ~3 hours experiment, ranging results with precision of millimeters were obtained, with a resolution of 0.5 millimeter or better.  This new kind of space method, called Lunar Radio-phase Ranging (LRR), can measure the station position, earth tide and rotation, lunar orbit, tide and liberation, by means of independent observation.  We are using this newly developed space geodetic technique together with LLR data in analysis for future lunar dynamical studies. Additionally, after the deduction of the earth atmospheric aberration, ionospheric disturbance, ground equipment thermal noise and the interplanetary plasma influence, the microwave differential ranging and velocity measurement of higher accuracy was verified. Using this technology, a scheme which is using differential ranging and velocity measurement is proposed as a precursor technology, in the field of space low-frequency gravitational-wave detection. On these bases, using the microwave link of a lunar lander and the communication navigation satellite at L4 / L5 libration points, a new method of low-frequency gravitational-wave detection, which has the sensitivity of 10–17–10–20, is suggested to partly fill the frequency band-gap between e-LISA and the pulsar TOA method.

Bio: 平劲松于1996年获得中国科学院理学博士学位。2005年度中国科学院百人计划研究员-海外杰出青年入选者，长期从事空间大地测量、深空探测和GNSS技术研究与应用工作。现任中科院国家天文台月球与深空探测研究部行星动力学与无线电科学研究团组首席研究员；目前主要从事太阳系类地（固体）行星动力学、固体行星物理、内部结构与大气电离层探测研究。参与“月女神”和“嫦娥”系列月球探测工程研制实施以及科学应用研究，曾参与包括“萤火”-1在内的多个火星探测任务；曾主持863重大项目课题1项；召集学术期刊专题专辑）7期（其中《中国科学 G辑》4期次）。使用嫦娥-1观测数据证认发现月球存在较大规模盾形火山，优化了月球重力场模型并新证认了月球多个中尺度质量瘤异常区，基于优化的月球重力场模型揭示了月幔底部的超低粘性半流体层依然被地球和太阳潮汐作用、长期加热，发现月球仍然活着的证据。近期带领团队借助嫦娥-3号探测器开展了毫米精度的地-月之间微波测距技术验证试验，并证认月球周围存在比较明显的电离层。