CAJ | 학술논문

BOC调制是一种新的调制方式，能够实现频谱分离并能够充分利用整个频带，比传统的BPSK调制拥有更好的自相关特性，以至于能够改善定位精度。由于BOC调制信号在载波频率点处有较低的功率谱密度，因而，在未来的卫星导航系统中使用 BOC 调制信号将能够减少信号间的干扰。本文详细地分析了BOC调制信号的特点，通过对功率谱密度函数、自相关函数、Gabor带宽和码跟踪精度等参数的分析和仿真，验证了BOC调制信号在相关特性、抗干扰能力和码跟踪精度方面的优越性。并针对 BOC 调制信号自相关峰的多峰带来的跟踪不确定性会使捕获复杂度增加和带来跟踪误差的问题，本文介绍了几种BOC调制信号的接收技术，可为我国自主研发的导航系统的信号体制设计和系统优化提供技术支撑。
BOC조제시일충신적조제방식，능구실현빈보분리병능구충분이용정개빈대，비전통적BPSK조제옹유경호적자상관특성，이지우능구개선정위정도。유우BOC조제신호재재파빈솔점처유교저적공솔보밀도，인이，재미래적위성도항계통중사용 BOC 조제신호장능구감소신호간적간우。본문상세지분석료BOC조제신호적특점，통과대공솔보밀도함수、자상관함수、Gabor대관화마근종정도등삼수적분석화방진，험증료BOC조제신호재상관특성、항간우능력화마근종정도방면적우월성。병침대 BOC 조제신호자상관봉적다봉대래적근종불학정성회사포획복잡도증가화대래근종오차적문제，본문개소료궤충BOC조제신호적접수기술，가위아국자주연발적도항계통적신호체제설계화계통우화제공기술지탱。
BOC modulation is a type of new modulation method, which realizes the split of spectrum to make full use of the available frequency bands, and possesses better autocorrelation property than the classic BPSK modulation, so can improve the precision of the positioning. Thus, the use of the Binary Offset Carrier (BOC) modulated signal in incoming satellite navigation systems can reduce the interference as it has low PSD at carrier frequency. the signal characteristic of BOC is analyzed in detail. BOC modulation signal has the advantages of correlate characteristics, code tracking accuracy and anti-jamming ability which are validated by the analysis and simulation of the power spectral density function, correlation function, Gabor bandwidth, and code tracking accuracy. According to the problems which can be brought by the tracking uncertainty of BOC modulation signal, several receiver techniques for BOC modulation signal are introduced in order to design the satellite signal and optimize the satellite system.