Research for the Effect on Intermediate Frequency Sampling and Pulse Compression Due to Clock Jitter
Chen Jia-min①②; Tong Zhi-yong①; Yang Ru-liang①
①Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China; ②Graduate University of the Chinese Academy of Sciences, Beijing 100039, China
Abstract：Clock jitter is one of the most importation factors that affects the Signal-to-Noise Rate(SNR). Based on Gaussian random process model and continuous-time system in time domain ,this paper analyzes the effect on baseband and intermediate frequency sampling due to clock jitter. Taking into account the quantization noise, an approximate formula of the relationship between SNR and other factors is obtained in time domain. The simulation results show that the formula also be applicable to calculate the SNR in discrete-time system. The paper also discusses the influence of clock jitter on the pulse compression of the Synthetic Aperture Radar(SAR) signal. The window function is used to weight the signal in order to suppress the side lobe in pulse compression process. Finally, several methods to reduce the clock jitter are introduced.
陈佳民;童智勇;杨汝良. 时钟抖动对中频线性调频采样及脉冲压缩影响的研究[J]. 电子与信息学报, 2010, 32(7): 1686-1691 .
Chen Jia-min;Tong Zhi-yong;Yang Ru-liang. Research for the Effect on Intermediate Frequency Sampling and Pulse Compression Due to Clock Jitter. , 2010, 32(7): 1686-1691 .
2010, Vol. 32 
