| Satellite navigation and positioning has played a huge role in everyday life and military activities or scientific research. So, it is needed to analyze the GNSS(Global Navigation Satellite System) signal, from its frequency correlation and power characteristics. Therefore, a set of analysis method for multi-channel, multi- frequency and the new navigation signal has a great scientific significance and application value. There is some research in related fields at home and abroad, and this article will briefly analyze some common indicators and study of some important parameters. In the same time, the paper will present algorithms versatility for all the constant envelope signals on different frequency point.The main work of this paper will focus on the following areas:1 Study the new navigation signal structure, including the characterist ics of BOC signal and its derivative signal. And also study the analysis of constant envelope modulation signals.2 Set a indicator system of assessment, and complete a scientific analysis method which could support different modulation of GNSS signal.3 Present a GNSS signal analysis algorithm. Complete the simulation of choosing the best operating point of AMP with different constant envelope state, and the simulation of the impact of pre-filter to GNSS signal.The main contributions and conclusions are:1 Built a navigation signal analysis indicator system, and completed a detailed study of some important indicators: T-offset, effective power of navigation signal, colorful constellation, power distortion in band, and so on.2 Design and complete the analysis algorithm, and make sure this algorithm could be used for several GNSS signals.3 Analyzes the best operating point of AMP with different constant envelope state, and the simulation of the impact of pre-filter to GNSS signal. |
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