电讯技术2017，Vol.57Issue(1)：27-32,6.DOI:10.3969/j.issn.1001-893x.2017.01.005
利用参考波形估计导航信号测距偏差
Navigation Signal Ranging Bias Estimation Using Reference Waveform
摘要
Abstract
Aiming to the tiny distortion of satellite navigation signal,estimation of ranging bias caused by signal distortion is studied. Based on ideal rectangular pulse waveform and zeros crossing points of real sig-nal waveform,a reference waveform is defined. According to the working principle of delay lock loop, a ranging bias estimation method based on reference waveform is proposed,which can be used to quantitative-ly estimate the impact of waveform distortion on ranging and compare the ranging differences among satel-lites. Ranging bias of the distorted signal waveform of second-order step(2OS) model verifies that the method is efficient,and relationship between estimation accuracy and signal-to-noise ratio( SNR) is ana-lyzed. Finally the method is applied to collect navigation signals of Beidou or COMPASS satellites,which shows that the method can be used to ranging performance evaluation of in-orbit satellite signals.关键词
导航信号/信号质量监测/测距偏差/波形畸变/参考波形/2OS模型Key words
navigation signal/signal quality monitoring/ranging bias/waveform distortion/refrerence wave-form/second-order step model分类
信息技术与安全科学引用本文复制引用
刘建成,高皓,曹子春..利用参考波形估计导航信号测距偏差[J].电讯技术,2017,57(1):27-32,6.
