Bispectra-Mellin transform and its application in Doppler-distorted Pulsar Signals
会议名称：《第三届中国卫星导航学术年会》
会议日期：2012年
学科分类：08[工学] 081105[工学-导航、制导与控制] 0811[工学-控制科学与工程]
关 键 词：pulsar bispectra Mellin transform low-pass filtering property Doppler
摘 要：The bispectra based pulsar integrated pulse profile recognition algo- rithm performs poorly when the pulsar signal received by spacecraft is distorted by Doppler effect. In order to improve the recognition rate, this paper proposes a novel pulsar integrated pulse profile recognition algorithm based on the bispectra-mellin （BM） transform. By combining bispectra and mellin transform together, the BM transform is independent of both translation and scale changes, and robust to Gaussian noise, which is especially suitable for pulsar signal recognition in X-ray pulsar deep space navigation system. Several experiments dealing with different pulsars have been carried out to illustrate the applicability of this algorithm, even when the signal is Doppler-distorted.