Research on Open-Loop Measurement Technique for Spacecraft

摘要：

　　In order to solve the problem that Phase-Locked loop tracking measurement technique losses lock when the SNR is low or dynamic range is high, we do the research of spacecraft open-loop measurement technique without Phase-Locked loop.Open-Loop measurement technique includes Open-Loop data reception and data processing technique.Spacecraft Open-Loop distance measurement technique mainly adopts preset frequency band, FFT analysis, high-intermediate frequency or RF collection technique.Spacecraft Open-Loop data processing mainly includes Open-Loop Doppler data processing and Open-Loop distance measurement data processing.With high accuracy estimation and compensation for Doppler and Doppler rate, the random error of Open-Loop Doppler and distance measurement is about an order of magnitudes better than Closed-Loop.Open-Loop measurement technique has the disadvantage of complicated algorithms and huge amount of calculation, so it cant be implemented on the present FPGA.As a result, the paper presents a method to implement Open-Loop measurement technique.

关键词： Open-loop Doppler Open-loop distance measurement Phase-locked loop Doppler compensation Frequency spectrum calibration Unified compute device architecture

作者: Wenquan Chen Lei Huang

作者单位: The 27th Research Institute of China Electronics Technology Group Corporation, Zhengzhou 450047, Chi Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China

会议类型: 国际会议

会议名称: The 27th Conference of Spacecraft TT&C Technology in China(第27届中国飞行器测控学术会议)

会议地点: 广州

会议语种:英文

页码: 185-197

在线出版日期: 2014-11-09（万方平台首次上网日期，不代表论文的发表时间）