The invention discloses a method and
system for large-scale parallel real-time transmission of Beidou
satellite navigation signals. The method of the invention constructs a large-scale parallel
signal transmission
branch, carries out large-scale grouping of
satellite navigation messages according to the structure, and sequentially sends them into parallel
signal transmission
branch, using a complex number shift pseudo-random code generator to obtain the sub-
ranging code dedicated to the parallel transmission
branch of the navigation
satellite, respectively spread the navigation message of each branch, first modulate with the same carrier with different frequency offsets, and then convert all branch The
carrier modulation navigation
signal is superimposed and
noise is added to form a composite
satellite navigation signal, and finally it is sent through a single antenna, and the receiving end uses a single antenna to receive the received navigation signal according to the branch. Parallel to serial, realize real-time navigation and positioning of the Beidou
satellite navigation system by obtaining navigation messages. The invention can be widely used in
satellite navigation systems, and can also be used in various
ranging systems, communication systems, radio and television systems and control systems.