Results 211 to 220 of about 6,491,673 (269)

A Graph Neural Network Based Radio Map Construction Method for Urban Environment

IEEE Communications Letters, 2023
Radio maps can enhance the capability of wireless sensor networks and improve the efficiency of spectrum utilization. However, the construction of an accurate radio map in the urban environment is a challenging task, since the dense buildings lead to a ...
Guokai Chen, Yongxiang Liu, T. Zhang, Jianzhao Zhang, Xiye Guo, Jun Yang   +5 more
semanticscholar   +1 more source

CONSTRUCTING CHAOTIC POLYNOMIAL MAPS

International Journal of Bifurcation and Chaos, 2009
This paper studies the construction of one-dimensional real chaotic polynomial maps. Given an arbitrary nonzero polynomial of degree m (≥ 0), two methods are derived for constructing chaotic polynomial maps of degree m + 2 by simply multiplying the given polynomial with suitably designed quadratic polynomials.
Zhang, Xu, Shi, Yuming, Chen, Guanrong
openaire   +2 more sources

Accurate Spectrum Map Construction for Spectrum Management Through Intelligent Frequency-Spatial Reasoning

IEEE Transactions on Communications, 2023
Spectrum maps are of crucial importance for realizing efficient spectrum management in the sixth-generation (6G) wireless communication networks. However, existing spectrum map construction schemes mainly depend on spatial interpolation or just simply ...
Fuhui Zhou, Chenyue Wang, Guangyu Wu, Yuhang Wu, Qihui Wu, N. Al-Dhahir   +5 more
semanticscholar   +1 more source

ScalableMap: Scalable Map Learning for Online Long-Range Vectorized HD Map Construction

Conference on Robot Learning, 2023
We propose a novel end-to-end pipeline for online long-range vectorized high-definition (HD) map construction using on-board camera sensors. The vectorized representation of HD maps, employing polylines and polygons to represent map elements, is widely ...
Jingyi Yu, Zizhao Zhang, Shengfu Xia, Jizhang Sang   +3 more
semanticscholar   +1 more source

GSMAC: GAN-Based Signal map Construction With Active Crowdsourcing

IEEE Transactions on Mobile Computing, 2023
With the dawn of 5G network, a new set of requirements for site spectrum monitoring, location-based services (LBS), network construction, and cellular planning are emerging, all of which are relying on fine-grained signal map.
Yanchao Zhao, Chengyong Liu, K. Zhu, Shenmin Zhang, Jie Wu   +4 more
semanticscholar   +1 more source

CRCLoc: A Crowdsourcing-Based Radio Map Construction Method for WiFi Fingerprinting Localization

IEEE Internet of Things Journal, 2022
The WiFi-based fingerprint indoor-positioning system has attracted increasing interest from industry and academia, benefiting from the widespread deployment of the wireless local area network (WLAN) infrastructure.
X. Du, Xuewen Liao, Minmin Liu, Zhenzhen Gao   +3 more
semanticscholar   +1 more source

SafeMap: Robust HD Map Construction from Incomplete Observations

International Conference on Machine Learning
Robust high-definition (HD) map construction is vital for autonomous driving, yet existing methods often struggle with incomplete multi-view camera data.
Xiaoshuai Hao, Lingdong Kong, Rong Yin, Pengwei Wang, Jing Zhang, Yunfeng Diao, Shu Zhao   +6 more
semanticscholar   +1 more source

Online Ground Multitarget Geolocation Based on 3-D Map Construction Using a UAV Platform

IEEE Transactions on Geoscience and Remote Sensing, 2022
Geolocating multiple targets of interest on the ground from an aerial platform is an important activity in many applications, such as visual surveillance.
Fangbing Zhang, Tao Yang, Yi Bai, Yajia Ning, Ye Li, Jinghui Fan, Dongdong Li   +6 more
semanticscholar   +1 more source

Leveraging Enhanced Queries of Point Sets for Vectorized Map Construction

European Conference on Computer Vision
In autonomous driving, the high-definition (HD) map plays a crucial role in localization and planning. Recently, several methods have facilitated end-to-end online map construction in DETR-like frameworks.
Zihao Liu, Xiaoyu Zhang, Guangwei Liu, Ji Zhao, Ningyi Xu   +4 more
semanticscholar   +1 more source

Constructing Maps Collaboratively

Journal of Geography, 1998
Abstract Seventh-grade students constructed maps in two ways. Some made maps individually and others constructed maps collaboratively in small groups. Post-test results on a written geography test indicated that students who worked in small groups had a slightly better understanding of map concepts than those who worked individually.
Gaea Leinhardt, Catherine Stainton, Jennifer Merriman Bausmith   +2 more
openaire   +1 more source