CAJ | 학술논문

电离层是一种典型的色散介质，会对导航信号产生延迟，且不同频点处的电离层延迟互不相同。实际应用中通常只考虑接收信号中心频点处的电离层延迟，而忽略信号带宽范围内的电离层色散特性。建立了电离层色散特性的对导航信号接收的影响分析模型，并定量地分析了电离层色散效应对BPSK（10）、BOC（14，2）以及AltBOC（15，10）等宽带导航信号的影响。分析表明电离层色散效应对BPSK（10）信号的影响可忽略不计，对高阶 BOC 信号会产生一定程度的与电离层特性相关的相关损耗及载波跟踪偏差，其中AltBOC（15，10）产生的相关损耗最高约1．4dB，载波相位跟踪偏差最高约0．374π。
전리층시일충전형적색산개질，회대도항신호산생연지，차불동빈점처적전리층연지호불상동。실제응용중통상지고필접수신호중심빈점처적전리층연지，이홀략신호대관범위내적전리층색산특성。건립료전리층색산특성적대도항신호접수적영향분석모형，병정량지분석료전리층색산효응대BPSK（10）、BOC（14，2）이급AltBOC（15，10）등관대도항신호적영향。분석표명전리층색산효응대BPSK（10）신호적영향가홀략불계，대고계 BOC 신호회산생일정정도적여전리층특성상관적상관손모급재파근종편차，기중AltBOC（15，10）산생적상관손모최고약1．4dB，재파상위근종편차최고약0．374π。
Ionosphere is a typical dispersive medium,which may cause frequency depended delay to navigation signal.In the practical applications,the ionosphere delay between signals at different frequencies is considered only,while the effect of ionosphere dispersion on the receiving for a single navigation signal is usually ignored.A module was established to analyze the effect of ionosphere dispersion.Base on this module,the effect of ionosphere dispersion on some typical wide-band navigation signals was analyzed,such as BPSK(10),BOC(14,2),AltBOC (15,10)signals.The analysis results indicate that the effect on BPSK(10)signal can be ignored,but some correlation loss and carrier phase tracking error will be introduced into the track of high order BOC signals,such as BOC(14,2)signal and AltBOC(15,10)signal,and the correlation loss and carrier phase tacking error of AltBOC(15,10)can be 1.4dB and 0.185 cycles separately.