An Acquisition Algorithm for DS/FH TT&C Signal Using Subband-Accumulation Method

摘要：

　　The problem of fast acquisition of Direct Sequence/Frequency Hopping (DS/FH) spread spectrum signal is studied.With the existence of ionospheric dispersion,the carder phase continuity of a phase-coherent FH system is disrupted and the complexity of acquisition is drastically increased.By searching the Total Electron Count (TEC),i.e.the electron density,along the path length,the receiver is capable of compensating for the phase pattern of local replica FH signal and performing quasi-coherent acquisition.A new acquisition strategy named Band Division Accumulation is proposed.It is proved that the strategy can broaden the TEC search period and thus reduce search complexity.The connection between the number of sub-bands and energy loss is analyzed.The accumulation loss of acquisition can be adjusted by altering the number of sub-bands,providing flex-ibility to design of receivers.

关键词： TT&C DS/FH signal Ionospheric dispersion Phase estimation Band division Incoherent accumulation

作者: Xiao Chen Zhiqiang Li Wenming Zhu Dekan Lou

作者单位: Institute of Communication Engineering,PLA University of Science and Technology,Nanjing 210007,China

会议类型: 国际会议

会议名称: The First International Conference of National Soft Power (第一届国际软实力学术研讨会)

会议地点: 济南

会议语种:英文

页码: 221-230

在线出版日期: 2011-10-22（万方平台首次上网日期，不代表论文的发表时间）