Study of Delay-Delay Rate 2-D Correlation in Satellite Observation of VLBI

摘要：

Due to the self rotation and revolution of the earth and the satellite moving comparatively, the delay rate changes intricately and that affects correlation result when we use VLBI to detect Satellite. To solve the problem, a new method of delay-delay rate 2-D correlation is proposed which based on time-frequency 2-D correlation. This method applies ambiguity function calculation of time-frequency analysis theory to VLBI. The result of Doppler shift equal to the product of delay rate and the frequency of satellite transmitted was proved in this article, so the method of delay-delay rate 2-D correlation is put forward refer to the theory of time-frequency 2-D correlation, and this method can get the value of targets delay and delay rate by peak value search after ambiguity function calculation of two stations received signal. Simulation results have indicated that this method can detect value of the delay and the delay rate at the same time, and its useful for VLBI to detect Satellite.

关键词： VLBI doppler shift ambiguity Junction delay-delay rate 2-D correlation

作者: Guo Shi-jian Li Po Xin Yu-lin Chen Zeng-ping

作者单位: ATR key Lab, National Univ.of Defense Technology Changsha, Hunan, 410073, China

会议类型: 国际会议

会议名称: The 2nd IEEE International Conference on Advanced Computer Control(第二届先进计算机控制国际会议 ICACC 2010)

会议地点: 沈阳

会议语种:英文

页码: 409-412

在线出版日期: 2010-03-27（万方平台首次上网日期，不代表论文的发表时间）