二进制偏移载波调制信号畸变误差评估指标研究

随着全球卫星导航系统的发展，二进制偏移载波（BOC）调制信号被广泛采用。全面评估BOC信号的畸变误差对于导航系统的信号完好性评估与监测具有重要意义。前文对于BOC信号的畸变研究较少，没有解析评估BOC信号畸变误差的指标与方法。本文针对三种常见的信号畸变，给出了完善的畸变误差评估指标，能够全面评估畸变误差。同时采用提出的评估指标对北斗全球系统B1频段上的基线信号BOC(14,2)及MBOC(6,1,1/11)信号进行评估。文中提出的畸变误差评估指标能够用于评估现代卫星导航信号的畸变误差，对现代导航信号体制设计及完好性监测均具有指导意义。

Research on Distortion Error Evaluation Indexes of Binary Offset Carrier Modulation Signals

With the development of Global Navigation Satellite System (GNSS), Binary Offset Carrier (BOC) signal is widely adopted. Evaluation of distortion errors of BOC signals is of great importance to GNSS signal integrity evaluation and monitoring. In former researches of BOC signal distortion, there were no analytical methods and indexes to describe the distortion errors of BOC signals. In this paper, the analytical evaluation indexes for three signal distortion errors of BOC signals were first developed. Then the proposed evaluation indexes were used to evaluate the distortion errors of BOC(14,2) and MBOC(6,1,1/11) signals, which were the advised basis signals of BeiDou global navigation satellite system. The distortion error evaluation indexes proposed in the papar could be used to evaluate the distortion errors of modern GNSS signals, and are advisodary to modern signal design and integrity monitoring.