Method and device for dual-frequency constant envelope modulation of navigation signal
A technology of navigation signal and modulation method, which is applied in the field of satellite navigation and can solve problems such as unable to give solutions
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[0054] A modulation method or modulation device for a dual-unbalanced quadrature phase-shift keying signal of the present invention will be described in detail below with reference to the accompanying drawings, taking satellite navigation service signals using direct-sequence spread spectrum technology as an example.
[0055] It is known that the signal that needs to be multiplexed in the upper sideband is s k (t), where k=1,2,3...N; the signal that needs to be multiplexed in the lower sideband is where j=1,2,3...M.
[0056] figure 1 It is a schematic flow chart of a dual-frequency navigation signal constant envelope modulation method provided by the present invention, and the method includes the following steps:
[0057] Step S1: Carry out constant envelope modulation on the signal components that need to be multiplexed in the upper and lower sidebands. The method of constant envelope modulation can adopt any constant envelope transmission technology suitable for constant ...
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Abstract
Description
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