基于 GPS/DTMB/FM 集成的环境自适应定位方法。

An Environmentally-Adaptive Positioning Method Based on Integration of GPS/DTMB/FM.

机构信息

School of Electronic and Information Engineering, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, China.

Didi Chuxing Technology Co., Building B1&B2, Digital Valley, Zhongguancun Software Park, Compound 8, Dongbeiwang Road, Haidian District, Beijing 100000, China.

出版信息

Sensors (Basel). 2018 Dec 6;18(12):4292. doi: 10.3390/s18124292.

DOI:10.3390/s18124292

PMID:30563196

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6308708/

Abstract

The Global Positioning System (GPS) yields good precision and availability in open outdoor environment. However, the errors of GPS may suffer degradation in some complex environments, such as forests and urban canyons. To solve this problem, a new positioning method is designed integrating GPS, Digital Terrestrial Multimedia Broadcast (DTMB) and frequency-modulated (FM) radio signal. In this method, the DTMB transmitter acts as a pseudo-satellite to assist GPS positioning. Furthermore, the FM fingerprint positioning is used to correct the positioning bias. An adaptive selection scheme is proposed to provide an optimal integration mode of the sensors. Field experiments in complex environment were carried out for evaluation. Comparing to the GPS-only and GPS + DTMB approach, positioning accuracy was improved by at least 68.21 % and 21.27 % with the proposed method, respectively.

摘要

全球定位系统（GPS）在开放的户外环境中能提供较好的精度和可用性。然而，GPS 的误差在某些复杂环境中可能会恶化，例如森林和城市峡谷。为了解决这个问题，设计了一种新的定位方法，将全球定位系统（GPS）、数字地面多媒体广播（DTMB）和调频（FM）无线电信号相结合。在这种方法中，DTMB 发射器充当伪卫星来辅助 GPS 定位。此外，还使用 FM 指纹定位来修正定位偏差。提出了一种自适应选择方案，以提供传感器的最佳集成模式。在复杂环境中进行了现场实验评估。与仅使用 GPS 和 GPS + DTMB 的方法相比，该方法的定位精度分别提高了至少 68.21 %和 21.27 %。