公开(公告)号：EP2698959B1

公开(公告)日：2017-09-06

申请号：EP12771513.4

申请日：2012-03-27

申请人： Huazhong University of Science and Technology

发明人： TANG, Zuping ,  WEI, Jiaolong ,  YAN, Tao

IPC分类号： G01S19/02 ,  H04L23/02 ,  H04L27/20 ,  H03D3/26 ,  G01S19/37

CPC分类号： H04L27/32 ,  G01S19/02 ,  G01S19/37 ,  H03D3/26 ,  H04B2215/065 ,  H04L23/02 ,  H04L25/03 ,  H04L27/20

公开(公告)号：EP2698959A1

公开(公告)日：2014-02-19

申请号：EP12771513.4

申请日：2012-03-27

申请人： Huazhong University of Science and Technology

发明人： TANG, Zuping ,  WEI, Jiaolong ,  YAN, Tao

IPC分类号： H04L27/00 ,  G01S19/01

CPC分类号： H04L27/32 ,  G01S19/02 ,  G01S19/37 ,  H03D3/26 ,  H04B2215/065 ,  H04L23/02 ,  H04L25/03 ,  H04L27/20

摘要： The present invention provides a method for modulating a navigation signal, comprising: multiplying a data channel difference signal between upper and lower sidebands by a sine binary subcarrier to obtain an odd timeslot baseband signal of a branch Q, and multiplying a data channel sum signal of the upper and lower sidebands by a cosine binary subcarrier to obtain an odd timeslot baseband signal of a branch I of the data channel; multiplying a pilot channel difference signal between the upper and lower sidebands by the sine binary subcarrier to obtain an even timeslot baseband signal of the branch Q, and multiplying a pilot channel sum signal of the upper and lower sidebands by the cosine binary subcarrier to obtain an even timeslot baseband signal of the branch I; and performing QPSK modulation on the baseband signals of the branch I and branch Q to obtain a TD-AltBOC modulation signal. The present invention can implement transmission of different navigation services at two adjacent frequency bands, and each navigation service comprises a data channel and a pilot channel. The navigation signal of each sub-band may be received independently, or signals of the upper and lower sidebands may be jointly received to obtain high-precision navigation performance.