Prformance Analysis Of Famlily Of BOC Modulation In Modernized GNSS

With the global navigation satellite system GNSS (Global NavigationSystem), the rapid development of the global navigation system for a country’sstrategic significance, precision navigation and positioning system satellitenavigation system development capability is an important indicator of GNSS inthe process of modernization, signal system modernization is an important partof it. This paper studies mainly the signal system in the modulationcharacteristics which are analyzed. It provides a comprehensive analysis andestablishes a new theory, and at the same time it also provides a good theoreticalreference for China BeiDou system modulation parameters selection.In this article, it has done detailed theoretical analysis and mathematicalsimulation research method which is based on detailed analysis of themathematical theory of BOC modulation, and it improves BOC modulation of thepower spectral density and autocorrelation function of the theoretical derivation,the BOC modulation is proposed from the original nature of BPSK modulation, itis BOC modulations that carry the main power spectrum away from the centercarrier, and it achieves the optimal design of signals in the limited spectrumresource.At last, it provides a comprehensive summary of the jamming evaluationmethod based on the suggested using the international telecommunication union,the evaluation parameters for the in-depth research, innovation will interferewith indicators as a intermediate evaluation indicators, for China’s BeiDou B1frequencies of use of BOC modulation signal compatibility and interoperabilityof performance evaluation. It provides an analysis and meaningful signalcompatibility analysis of samples for our new generation BeiDou signalsmodulation signal in system design.Through in-depth research and analysis of China’s BeiDou system B1frequency band BOC modulation signal, the family of BOC modulation signalnot only achieves in their more superior performance, and also shows theprominent compatibility and interoperability when they work with other systems.