Using single millisecond pulsar for terrestrial position determination
Sign Up to like & getrecommendations! Published in 2019 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-019-3531-2
Abstract: With precise observatory coordinates, we can convert the site arrival times (SATs) of observed pulses to barycenter by adopting correct pulsar timing model. In this paper, we time millisecond pulsars to determine the position of… read more here.
Keywords: millisecond; pulsar terrestrial; position; position determination ... See more keywords
Accuracy and precision of position determination in ISTEM imaging of BaTiO3.
Sign Up to like & getrecommendations! Published in 2021 at "Ultramicroscopy"
DOI: 10.1016/j.ultramic.2021.113325
Abstract: In this paper we study the effect of lens aberrations (spherical aberration and astigmatism), beam tilt, contamination and shot noise on the accuracy and precision of position determination in imaging scanning transmission electron microscopy (ISTEM)… read more here.
Keywords: accuracy precision; precision position; position determination; istem ... See more keywords
Direct position determination of moving targets based on DOA
Sign Up to like & getrecommendations! Published in 2024 at "Electronics Letters"
DOI: 10.1049/ell2.13297
Abstract: Compared with the traditional two‐step localization methods, the direct position determination (DPD) method is more robust at low signal‐to‐noise ratio. However, to guarantee the optimal location result, the computational complexity of DPD with grid search… read more here.
Keywords: computational complexity; direct position; position determination; position ... See more keywords
Direct position determination with phase error compensation for multiple targets using spatial sparsity
Sign Up to like & getrecommendations! Published in 2021 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/abe9dc
Abstract: Measuring the positions of multiple targets is key in many positioning applications. Utilizing compressed sensing theory, measurements using the sparse direct position determination (DPD) methods are more accurate than the two-step methods and the traditional… read more here.
Keywords: direct position; position; multiple targets; error compensation ... See more keywords
Accuracy of position determination in Ca^{2+} signaling.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review. E"
DOI: 10.1103/physreve.100.022401
Abstract: A living cell senses its environment and responds to external signals. In this paper, we study theoretically the precision at which cells can determine the position of a spatially localized transient extracellular signal. To this… read more here.
Keywords: determination signaling; accuracy position; position; position determination ... See more keywords
A Direct Position Determination Method Using Distributed UAVs With Synchronization Error
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2023.3333950
Abstract: A direct position determination (DPD) method based on time difference of arrival (TDOA) using distributed unmanned aerial vehicles (UAVs) equipped with a single antenna is studied, where the sensing data are influenced by the clock… read more here.
Keywords: synchronization error; method; synchronization; direct position ... See more keywords
Direct Self-Position Determination Exploiting Multiple Noncircular Emitters: A Reduced Dimensional Weighted Propagator Method
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2024.3430293
Abstract: The global satellite navigation system is a common tool for self-positioning, but its performance may become weak or interrupted due to obstacles in harsh environments. The application of sensor arrays provides a more flexible and… read more here.
Keywords: method; self position; direct self; position determination ... See more keywords
A Computationally Efficient Direct Position Determination Algorithm Based on OFDM System
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2022.3231548
Abstract: Based on the orthogonal frequency division multiplexing (OFDM) system, a computationally attractive implementation for the traditional single source maximum likelihood (SML) direct position determination (DPD) algorithm is proposed. The proposed algorithm implements fast Fourier transform… read more here.
Keywords: sml; algorithm; direct position; ofdm system ... See more keywords
Gridless Maximum Likelihood One-Bit Direct Position Determination
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Signal Processing Letters"
DOI: 10.1109/lsp.2024.3491020
Abstract: Direct position determination (DPD) (a.k.a. direct localization) offers enhanced precision over traditional two-step approaches. This technique, however, involves considerable communication overhead for transmitting raw data. Low-bit direct localization methods have recently been introduced to address… read more here.
Keywords: one bit; bit direct; likelihood; bit ... See more keywords
Distributed Direct Position Determination
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Vehicular Technology"
DOI: 10.1109/tvt.2020.3025386
Abstract: The direct position determination (DPD) algorithms have been shown to outperform conventional two-step methods in localization accuracy under poor observation conditions (e.g., low signal-to-noise ratios or short signal observation durations). In this paper, we consider… read more here.
Keywords: cost function; position determination; position; direct position ... See more keywords
COMET-Based Direct Position Determination of Incoherently Distributed Sources: Algorithms and Performance Analysis
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Transactions on Vehicular Technology"
DOI: 10.1109/tvt.2025.3584224
Abstract: This correspondence proposes two direct position determination (DPD) algorithms for incoherently distributed sources based on covariance matching estimation technique (COMET). First, a low-complexity estimator DPD-COMET is obtained via least squares fitting between the sample covariance… read more here.
Keywords: incoherently distributed; direct position; position determination; distributed sources ... See more keywords