Results 21 to 30 of about 173,558 (169)

Dial It In: Rotating RF Sensors to Enhance Radio Tomography [PDF]

, 2013
A radio tomographic imaging (RTI) system uses the received signal strength (RSS) measured by RF sensors in a static wireless network to localize people in the deployment area, without having them to carry or wear an electronic device.
Bocca, Maurizio, Luong, Anh, Patwari, Neal, Schmid, Thomas   +3 more
core   +1 more source

Cramer-Rao Bounds for Joint RSS/DoA-Based Primary-User Localization in Cognitive Radio Networks [PDF]

, 2012
Knowledge about the location of licensed primary-users (PU) could enable several key features in cognitive radio (CR) networks including improved spatio-temporal sensing, intelligent location-aware routing, as well as aiding spectrum policy enforcement ...
Cabric, Danijela, Chen, Jianshu, Wang, Jun   +2 more
core   +1 more source

Monocular navigation for long-term autonomy [PDF]

, 2013
We present a reliable and robust monocular navigation system for an autonomous vehicle. The proposed method is computationally efficient, needs off-the-shelf equipment only and does not require any additional infrastructure like radio beacons or GPS ...
Krajnik, Tomas, Pedre, Sol, Preucil, Libor   +2 more
core   +1 more source

Implementation of Doppler-Based Location Sensor on Unmanned Aerial Vehicle [PDF]

International Journal of Electronics and Telecommunications
The article presents the first implementation of the Signal Doppler Frequency (SDF) location method on an Unmanned Aerial Vehicle (UAV) named Autonomous System of Location radio EmmiteRs (ASLER), employing a DJI Matrice UAV as its mobile platform for the
Rafał Szczepanik
doaj   +1 more source

Independent Local Radio: How Local? [PDF]

, 1993
1988 marked a new era in Irish broadcasting history. Up until then independent broadcasting services consisted of unlicenced and unregulated pirate radio stations. The 1988 Radio and Television Act created the Independent Radio and Television Commission, giving It powers to establish and supervise legal and independent local radio.
openaire   +2 more sources

Velocity-Based Channel Charting With Spatial Distribution Map Matching

IEEE Journal of Indoor and Seamless Positioning and Navigation
Radio fingerprinting (FP) technologies improve localization performance in challenging non-line-of-sight environments. However, FP is expensive as its life cycle management requires recording reference signals for initial training and when the ...
Maximilian Stahlke, George Yammine, Tobias Feigl, Bjoern M. Eskofier, Christopher Mutschler   +4 more
doaj   +1 more source

Recent Advances in Indoor Localization via Visible Lights: A Survey

Sensors, 2020
Because of the limitations of the Global Positioning System (GPS) in indoor scenarios, various types of indoor positioning or localization technologies have been proposed and deployed.
A B M Mohaimenur Rahman, Ting Li, Yu Wang   +2 more
doaj   +1 more source

HXMT Identification of a non-thermal X-ray burst from SGR J1935+2154 and with FRB 200428

, 2021
Fast radio bursts (FRBs) are short pulses observed in radio band from cosmological distances. One class of models invoke soft gamma-ray repeaters (SGRs), or magnetars, as the sources of FRBs.
Bu, Q. C., Cai, C., Cao, X. L., Chang, Z., Chen, G., Chen, T. X., Chen, Y., Chen, Y. B., Chen, Y. P., Cui, W., Cui, W. W., Deng, J. K., Dong, Y. W., Du, Y. Y., Fu, M. X., Gao, G. H., Gao, H., Gao, M., Ge, M. Y., Gu, Y. D., Gu, Y. D., Guan, J., Guo, C. C., Han, D. W., Huang, Y., Huo, J., Jia, S. M., Jiang, L. H., Jiang, W. C., Jin, J., Jin, Y. J., Kong, L. D., Li, B., Li, C. K., Li, G., Li, M. S., Li, T. P., Li, W., Li, X., Li, X. B., Li, X. F., Li, Y. G., Li, Z. W., Liang, X. H., Liao, J. Y., Lin, L., Liu, B. S., Liu, C. Z., Liu, G. Q., Liu, H. W., Liu, X. J., Liu, Y. N., Lu, B., Lu, F. J., Lu, X. F., Luo, Q., Luo, T., Ma, X., Meng, B., Nang, Y., Nie, J. Y., Ou, G., Qu, J. L., Sai, N., Shang, R. C., Song, L. M., Song, X. Y., Sun, L., Tan, Y., Tao, L., Tuo, Y. L., Wang, C., Wang, G. F., Wang, J., Wang, W. S., Wang, Y. S., Wen, X. Y., Wu, B. B., Wu, B. Y., Wu, M., Xiao, G. C., Xiao, S., Xiong, S. L., Xu, H., Xu, Y. P., Xue, W. C., Yang, J. W., Yang, S., Yang, Y. J., Yang, Yi-Jung, Yi, Q. B., Yin, Q. Q., You, Y., Zhang, A. M., Zhang, B., Zhang, C. M., Zhang, F., Zhang, H. M., Zhang, J., Zhang, S., Zhang, S. N., Zhang, T., Zhang, W., Zhang, W. C., Zhang, W. Z., Zhang, Y., Zhang, Y. F., Zhang, Y. J., Zhang, Yue, Zhang, Z., Zhang, Z. L., Zhang, Zhi, Zhao, H. S., Zhao, X. F., Zheng, S. J., Zheng, Y. G., Zhou, D. K., Zhou, J. F., Zhu, Y., Zhu, Y. X., Zhuang, R. L.   +120 more
core   +1 more source

Radio Map Framework for GSM Positioning

Communications, 2009
This paper introduces radio map framework for creation of GSM (Global System for Mobile communications) network radio maps. These radio maps are structured in the way that they can be utilized later on as a data source for fingerprinting-based ...
Peter Brida, Jozef Benikovsky
doaj   +1 more source

A Selection of Starting Points for Iterative Position Estimation Algorithms Using Feedforward Neural Networks

Sensors
This article proposes the use of a feedforward neural network (FNN) to select the starting point for the first iteration in well-known iterative location estimation algorithms, with the research objective of finding the minimum size of a neural network ...
Jaroslaw Sadowski, Jacek Stefanski
doaj   +1 more source