An improved phase measurement method of integrated pulse profile for pulsar  

作　　者：ZHANG Hua XU LuPing 

机构地区：[1]School of Electronic Engineering, Xidian University, Xi' an 710071, China

出　　处：《Science China(Technological Sciences)》2011年第9期2263-2270,共8页中国科学（技术科学英文版）

基　　金：supported by the National Hi-Tech Research and Development Program of China ("863" Project) (Grant No. 2007AA12Z323);the National Natural Science Foundation of China (Grant No. 60772139)

摘　　要：Integrated profile is one of the basic characteristic of X-ray pulsar. Gaussian function fit is used to model the components of X-ray pulsar profile, and it is combined with Poisson distribution model of X-ray pulsar to analyze Cramer-Rao low bound （CRLB） of phase, phase rate estimation and relation between CRLB and profile components. Then, a time domain method using minimum entropy is proposed for profile phase and phase rate estimation, and its effectiveness is explained using simulation examples.

关 键 词：PULSARS phase measurement Cramer-Rao minimum entropy 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] P145.6[自动化与计算机技术—计算机科学与技术]