ModiΡed pseudo-noise code regeneration method  

作　　者：Xiaojun Jin Zhonghe Jin Chaojie Zhang Jianwen Jiang Yangming Zheng 

机构地区：[1]Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, R R. China

出　　处：《Journal of Systems Engineering and Electronics》2010年第3期370-374,共5页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China (60904090);the Postdoctoral Science Foundation of China(20080431306);the Special Postdoctoral Science Foundation of China (20081458)

摘　　要：A modiΡed pseudo-noise（PN） code regeneration method is proposed to improve the clock tracking accuracy without impairing the code acquisition time performance.Thus,the method can meet the requirement of high accuracy ranging measurements in short time periods demanded by radio-science missions.The tracking error variance is derived by linear analysis.For some existing PN codes,which can be acquired rapidly,the tracking error variance performance of the proposed method is about 2.6 dB better than that of the JPL scheme（originally proposed by Jet Propulsion Laboratory）,and about 1.5 dB better than that of the traditional double loop scheme.A modiΡed pseudo-noise（PN） code regeneration method is proposed to improve the clock tracking accuracy without impairing the code acquisition time performance.Thus,the method can meet the requirement of high accuracy ranging measurements in short time periods demanded by radio-science missions.The tracking error variance is derived by linear analysis.For some existing PN codes,which can be acquired rapidly,the tracking error variance performance of the proposed method is about 2.6 dB better than that of the JPL scheme（originally proposed by Jet Propulsion Laboratory）,and about 1.5 dB better than that of the traditional double loop scheme.

关 键 词：regenerative pseudo-noise （PN） ranging chip tracking loop tracking error variance code acquisition time. 

分 类 号：TN914.42[电子电信—通信与信息系统] TQ424.1[电子电信—信息与通信工程]