Open AccessBOCC: A new modulation based on chirp subcarriers for future BeiDou LEO navigation‐augmented signal
Author(s) -
Zhao Xin,
Huang Xinming M.,
Sun Guangfu F.
Publication year - 2021
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/ell2.12009
Subject(s) - binary offset carrier modulation , chirp , subcarrier , computer science , chirp spread spectrum , electronic engineering , multipath interference , multipath propagation , multipath mitigation , offset (computer science) , telecommunications , frequency modulation , global positioning system , spread spectrum , gnss applications , orthogonal frequency division multiplexing , amplitude modulation , physics , engineering , bandwidth (computing) , optics , direct sequence spread spectrum , code division multiple access , laser , channel (broadcasting) , programming language
For improving the anti‐interference performance and compatibility of a navigation‐augmented signal in future BeiDou Global Navigation Satellite Systems, a new modulation based on chirp subcarriers is proposed, named binary offset chirp carrier modulation, which is formed by multiplying a periodic binary chirp subcarrier with a spreading code signal. And it can make use of the time‐varying frequency for shaping the spectrum and have superior performance in anti‐interference, similar advantage in tracking accuracy, anti‐multipath capability and compatibility compared with binary offset carrier modulations. The binary offset chirp carrier modulations proposed in this paper provide a potential signal design for the future low earth orbit (LEO) navigation‐augmented Global Navigation Satellite Systems.