Satellite laser ranging at ultra-high PRF of hundreds of kilohertz all day
Satellite laser ranging at ultra-high PRF of hundreds of kilohertz all day
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DOI：
10.3389/fphy.2022.1036346
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发表时间：
2022-10
期刊：
影响因子：
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通讯作者：
Mingliang Long;Haifeng Zhang;Rongwen Yu;Zhibo Wu;S. Qin;Zhongping Zhang
中科院分区：
文献类型：
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作者：
Mingliang Long;Haifeng Zhang;Rongwen Yu;Zhibo Wu;S. Qin;Zhongping Zhang
卫星激光测距（SLR）已在约 10 Hz 至 10 kHz 的脉冲重复频率（PRF）下运行；超高PRF单反（UH-SLR）是发展趋势。在这项研究中，提出了激光发射和门控脉冲串的交替工作模式，以解决激光后向散射造成的激光回波干扰问题。通过单脉冲能量80μJ、脉冲宽度10ps的200kHz皮秒绿光超高脉冲重复频率激光器和测距门装置，利用上海天文台60cm单反系统的口径搭建了UH-SLR。通过这种UH-SLR，可以在夜间和白天测量低轨道到高轨道和地球静止轨道卫星，也可以在白天测量低轨道和中轨道卫星。低轨卫星的法向点精度为~30 μm，高轨卫星的法向点精度为~100 μm，为超高脉冲重复频率和高精度空间目标激光测距的发展提供了有效方法。
Satellite laser ranging (SLR) had been operated at a pulse repetition frequency (PRF) from ∼10 Hz to 10 kHz; the ultra-high PRF of SLR (UH-SLR) is a trend of development. In this study, an alternate working mode of laser firing and gated pulse bursts is proposed to solve the problem of laser echo interference by laser backscattering. Through an ultra-high PRF of 200-kHz picosecond green laser with single-pulse energy of 80 μJ and a pulse width of 10 ps and a ranging gate device, UH-SLR has been built by an aperture of the 60-cm SLR system in the Shanghai Astronomical Observatory. By this UH-SLR, low-orbit to high-orbit and geostationary orbit satellites are measured night and day and also for low-orbit and medium-orbit satellites in the daytime. The normal point (NP) accuracy is ∼30 μm for low-orbit satellites and ∼100 μm for high-orbit satellites, which provides an effective method for the development of ultra-high PRF and high-precision space target laser ranging.