42 citations · 119 across the 18 of their papers we have counts for
5 papers · 1 filter
Dual Band GNSS Antenna Phase Center Characterization for Automotive Applications
Ran Liu, Daniel N. Aloi
In this paper, a low-cost small size dual-band ceramic GNSS patch antenna is presented from design to real sample. A further study of this patch antenna illustrates the absolute ph…
Collaborative Radio SLAM for Multiple Robots based on WiFi Fingerprint Similarity
Ran Liu, Zhenghong Qin, Hua Zhang +6
Simultaneous Localization and Mapping (SLAM) enables autonomous robots to navigate and execute their tasks through unknown environments. However, performing SLAM in large environme…
Relative Localization of Mobile Robots with Multiple Ultra-WideBand Ranging Measurements
Zhiqiang Cao, Ran Liu, Chau Yuen +4
Relative localization between autonomous robots without infrastructure is crucial to achieve their navigation, path planning, and formation in many applications, such as emergency…
Cost-effective Mapping of Mobile Robot Based on the Fusion of UWB and Short-range 2D LiDAR
Ran Liu, Yongping He, Chau Yuen +4
Environment mapping is an essential prerequisite for mobile robots to perform different tasks such as navigation and mission planning. With the availability of low-cost 2D LiDARs,…
WiFi Fingerprint Clustering for Urban Mobility Analysis
Sumudu HasalaMarakkalage, Billy Pik Lik Lau, Yuren Zhou +4
In this paper, we present an unsupervised learning approach to identify the user points of interest (POI) by exploiting WiFi measurements from smartphone application data. Due to t…