Results 11 to 20 of about 166,079,443 (146)

Fast TDOA and FDOA Estimation for Coherent Pulse Signals

International Journal of Antennas and Propagation, 2022
Time difference of arrival (TDOA) and frequency difference of arrival (FDOA) have been widely used for localizing temporally continuous signals passively.
Yan Liu, Fucheng Guo
doaj   +2 more sources

Performance Analysis of TDOA and FDOA Estimation for Pulse Signals

International Journal of Antennas and Propagation, 2022
Time difference of arrival (TDOA) and frequency difference of arrival (FDOA) are effective measurements for localizing emitters’ radiating pulse signals, such as radar.
Yan Liu, Fucheng Guo
doaj   +2 more sources

A Novel Joint TDOA/FDOA Passive Localization Scheme Using Interval Intersection Algorithm

Information, 2021
Due to the large measurement error in the practical non-cooperative scene, the passive localization algorithms based on traditional numerical calculation using time difference of arrival (TDOA) and frequency difference of arrival (FDOA) often have no ...
Lingyu Ai, Min Pang, Changxu Shan, Chao Sun, Youngok Kim, Biao Zhou   +5 more
doaj   +2 more sources

Bayesian FDOA Positioning with Correlated Measurement Noise

Remote Sensing
In this paper, the problem of source localization using only frequency difference of arrival (FDOA) measurements is considered. A new FDOA-only localization technique is developed to determine the position of a narrow-band source.
Wenjun Zhang, Xi Li, Yi Liu, Le Yang, Fucheng Guo   +4 more
doaj   +2 more sources

An algebraic method for moving source localization using TDOA, FDOA, and differential Doppler rate measurements with receiver location errors

EURASIP Journal on Advances in Signal Processing, 2019
To weaken the effect of receiver location error on localization accuracy and make the localization model closer to the practical scenario, this paper considers the receiver location errors, usually neglected in prior studies into the measurement model ...
Zhixin Liu, Dexiu Hu, Yongsheng Zhao, Yongjun Zhao   +3 more
doaj   +2 more sources

High-Precision Joint TDOA and FDOA Location System

Remote Sensing
Passive location based on TDOA (time difference of arrival) and FDOA (frequency difference of arrival) is the mainstream method for target localization. This paper proposes a fast time–frequency difference positioning method to address issues such as low
Guoyao Xiao, Qianhui Dong, Guisheng Liao, Shuai Li, Kaijie Xu, Yinghui Quan   +5 more
doaj   +2 more sources

Moving target positioning algorithm based on multidimensional scaling analysis from TDOA and FDOA with sensor uncertainties

Cogent Engineering
The problem of moving target localization from range and velocity difference measurements has attracted considerable attention in recent years. In this article, a novel weighted multidimensional scaling (MDS) algorithm is proposed to estimate the ...
Hesham Ibrahim Ahmed
doaj   +2 more sources

Enhanced Moving Source Localization with Time and Frequency Difference of Arrival: Motion-Assisted Method for Sub-Dimensional Sensor Networks

Applied Sciences
Localizing a moving source by Time Difference of Arrival (TDOA) and Frequency Difference of Arrival (FDOA) commonly requires at least N+1 sensors in N-dimensional space to obtain more than N pairs of TDOAs and FDOAs, thereby establishing more than 2N ...
Xu Yang
doaj   +2 more sources

TDOA positioning accuracy analysis based on time difference direction‐finding in distributed high‐frequency surface wave radar

IET Radar, Sonar &Navigation, Volume 17, Issue 10, Page 1498-1506, October 2023., 2023
Based on the time difference direction‐finding algorithm, new mathematical expressions of geometric dilution of precision (GDOP) are presented in Time Difference of Arrival positioning systems in this paper. The time difference direction‐finding reveals that the angle measurements are accurate for any length of baseline.
Yang Bai, Xin Zhang, Weibo Deng, Mengxiao Zhao   +3 more
wiley   +1 more source

Irregularities Observed at the Edge of a Mid‐Latitude Ionospheric Depletion Following a Geomagnetic Storm

Space Weather, Volume 21, Issue 6, June 2023., 2023
Abstract This manuscript presents the analysis of data from multiple ground‐ and space‐based sensors in the North American region before, during, and after the 12 October 2021 geomagnetic storm. Total electron content (TEC) and electron density data show the formation and equatorward propagation of a mid‐latitude trough at ∼50°N followed by the ...
J. F. Helmboldt
wiley   +1 more source