随着 5G技术的不断发展,5G蜂窝网络已被广泛应用于城市地区.然而,基于 5G的机会信号定位技术中存在着测距精度不高的问题.针对此问题,提出一种改进型 5G机会信号定位算法,该算法将多信号分类(multiple signal classification,MUSIC)算法与改进的早-晚功率锁相环(phase-locked loop,PLL)结合,不仅简化了锁相环结构,更保证了测距精度;同时搭建了基于 5G机会信号定位的原理样机,并对改进算法方法的有效性和可行性进行了验证,试验结果表明伪距均方误差为3.03 m.本文所提出的算法不仅结构简单、系统稳定,而且在测距精度上也有一定的优势.
5G opportunity signal localization algorithm based on multiple signals classification and improved early-late power-based phase-locked loop
With the continuous development of 5G technology,the 5G cellular network has been widely used in urban areas.However,there exists a problem of low ranging accuracy in the opportunistic signal positioning technology based on 5G.To solve this problem,an improved 5G opportunity signal location algorithm is presented in this paper.The algorithm combines multiple signals classification(MUSIC)algorithm with an improved early-late power-based phase-locked loop(PLL)structure,which not only simplifies the PLL structure,but also ensures the accuracy of ranging.A prototype based on 5G opportunity signal positioning principle was built to verify effectiveness and feasibility of the improved algorithm.The test results showed that the pseudo-distance mean square error was 3.03 meters.The algorithm proposed in this paper is not only simple in structure and stable in system,but also has certain advantage in ranging accuracy.
pedestrian navigation positioningoutdoor positioning5G opportunity signalframe structuretime of arrival estimationmulti-signal classification algorithmearly-late power phase locked loopdelay phase locked loop
万方数据
维普
